Consulta: subjectFacets:"Stomach content"
Registros recuperados: 48
Data/hora: 06/06/2024 07:23:28

Phytoplancton des zones myticoles de la baie de Vilaine et intoxication par les coquillages.
Provedor de dados: 5
Autores: Andresen Leitao, Maria Da Paz; Lassus, Patrick; Maggi, Pierre; Le Baut, Claire; Chauvin, Jacky; Truouet, Philippe.
Following 1978 and 1981 human poisoning by mussels in Vilaine Bay (France) a survey of potentially toxic dinoflagellates was conducted in that area in 1982. At the same time paralytic shellfish poison (PSP) analyses were made, the authors studied the dinoflagellates encountered in the intestinal guts of mussels from January to August 1982. Results failed to demonstrate an occurrence of PSP producing species, either by toxicological analysis or dinoflagellate persistency in the mussel guts.
Tipo: Text
Palavras-chave: Mytilus edulis; Bivalvia; Marine mollusks; Stomach content; Toxicity; Phytoplankton; Biological poisons; Mussel culture.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1853.pdf

Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
Provedor de dados: 5
Autores: Gamboa Delgado, Julián; Molina Poveda, César; Cahu, Chantal.
A study was conducted to evaluate variations of digestive enzyme activities in Litopenaeus vannamei (Boone) reared in commercial ponds under semi-intensive conditions. Shrimp were collected at each body weight increase of 2 g. As the shrimp grew (2-12 g), significant increases in the activities of lipase and chymotrypsin were observed. The total protease activity decreased from 6 g onwards. Trypsin activity showed a peak at 6 g and amylase activity increased two-fold after 2 g. Additionally, the stomach contents were analysed microscopically for shrimp between 2 and 10 g. Plant matter contributed above 30% of the total stomach content in 6-, 8- and 10-g shrimp. Detritus represented 58% and 62% of the total stomach content in 2- and 4-g shrimp,...
Tipo: Text
Palavras-chave: Semi intensive culture; Stomach content; Digestive enzymes; Litopenaeus vannamei; Shrimp.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-902.pdf

Prey preferences of adult sea bass Dicentrarchus labrax in the northeastern Atlantic: implications for bycatch of common dolphin Delphinus delphis
Provedor de dados: 5
Autores: Spitz, Jerome; Chouvelon, Tiphaine; Cardinaud, M.; Kostecki,; Lorance, Pascal.
In the northeastern Atlantic, adult sea bass (Dicentrarchus labrax) is one of largest fish living on the shelf, and this species has important commercial value. However, pelagic trawl fisheries that target sea bass have negative operational interactions with common dolphins (Delphinus delphis). Our goal was to determine the diet of adult sea bass in the Bay of Biscay from stomachcontent and stable-isotope analyses, and explore the dietary overlap between sea bass and common dolphins. We found that sea bass primarily target small pelagic fish, most notably mackerel (Scomber scombrus), scads (Trachurus spp.), anchovy (Engraulis encrasicolus), and sardine (Sardina pilchardus). These four species also dominated the diets of common dolphins. This overlap in...
Tipo: Text
Palavras-chave: Chesson's index; Marine top predator; Prey selection; SIAR; Stable isotope; Stomach content.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00125/23625/21485.pdf

Harmful Algal Blooms (HABs) and Black Mussel Mytilus galloprovincialis (Linnaeus, 1758) Culture in Izmir Bay (Iskele-Urla)-Turkey: Preliminary Results on the Annual Feeding Cycle Using a Qualitative Approach
Provedor de dados: 5
Autores: Lok, Aynur; Metin, Gulnur; Acarli, Sefa; Goulletquer, Philippe.
Considering the filtration capacity of mussels to qualitative particle selection, our study focused directly on ingested species by assessing mussel stomach content of various size classes (1-5 cm) over a year (August 97-June 98) rather than monitoring seawater samples. Different size of mussels (1, 2, 3, 4, 5 cm in length) was sampled monthly from the sides of fish cage floats in Urla-Izmir. Stomach contents were analyzed under microscope and different plankton species were grouped taxonomically. Bacillariophycea, Dinophyceae, Oxyphceae, Euglenophyceae as phytoplanktonic species were observed in the stomach contents of mussels as well as zooplanktonic species including Ciliata, Cladocera, Copepod, bivalve and gastropod larvae. Over the sampling period,...
Tipo: Text
Palavras-chave: Mussel; Mytilus galloprovincialis; Harmful; Phytoplankton; Stomach content; Aegean Sea.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00032/14329/11621.pdf

Contrasting perception of fish trophic level from stomach content and stable isotope analyses: A Mediterranean artificial reef experience
Provedor de dados: 5
Autores: Cresson, Pierre; Ruitton, Sandrine; Ourgaud, Melanie; Harmelin-vivien, Mireille.
A large complex of artificial reefs was deployed in the Bay of Marseilles, North-Western Mediterranean, for the enhancement of commercial fisheries stocks. Carbon and nitrogen stable isotope and stomach content analyses were performed on 23 fish species collected on the artificial reefs to assess their trophic position and feeding behaviour. Results indicated that fish diets were not modified on the artificial reefs compared to natural environments, nor was the structure of their trophic network. Artificial reefs, with their complex design, provide diverse and abundant food sources for fishes. Ranges of delta C-13 and delta N-15 of artificial reef fishes were comparable to those recorded in natural Mediterranean environments, with a similar trophic...
Tipo: Text
Palavras-chave: Artificial reefs; Fish diet; NW Mediterranean; Stable isotopes; Stomach content; Trophic level.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00186/29708/28188.pdf

Dinoflagelles toxiques sur les cotes francaises pendant l'ete 1983. Manifestations de Dinophysis acuminata sur le littoral normand.
Provedor de dados: 5
Autores: Paulmier, Gerard; Joly, Jean-pierre.
Numerous cases of food poisoning were observed in South Normandy during the summer 1983 and attributed to shellfish consumption. At the same time a dinoflagellate Dinophysis acuminata was found in the Bay of Seine and in north Normandy where high concentrations induced "red waters". The observation of the stomach contents of the mussels showed that this Dinophysis was one of the main constituents of the alimentary bolus. The toxicity of type DSP, determined by the mouse-test, is more or less correlated with the abundance coefficient of D. acuminata . Its space distribution also seems connected to the tidal movements.
Tipo: Text
Palavras-chave: Normandy; France; ANE; Dinophysis acuminata; Food poisoning; Stomach content; Mussel culture; Red tides; Biological poisons.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1807.pdf

Ecologie alimentaire des Macrouridae
Provedor de dados: 5
Autores: Geistdoerfer, Patrick.
This paper is a study of the feeding ecology of Macrouridae. After Data on their taxonomy and on the stomach contents, the author gives the results obtained: coefficient of vacuity, indication of a prey frequency, percentage in number and in weight, the mean number of prey per stomach, the mean weight of the prey, the alimentary coefficient of a prey. The diet of every species of Macrouridae and the characteristics of feeding in these species are described. He concludes with considerations on the Macrouridae in the ocean and their geographical distribution, and on the deep feeding chain, especially the trophic role of different groups of preys. It is thought that, in the Macrouridae, the alimentary diet is little specialized, and based on benthic and...
Tipo: Text
Palavras-chave: Macrouridae; Stomach content; Feeding behaviour.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/1978/publication-1957.pdf

Comparaison de cinq indices alimentaires utilises dans l'analyse des contenus stomacaux
Provedor de dados: 5
Autores: Rosecchi, E; Nouaze, Y.
Compound indices are often used in the analysis of fish stomach contents to characterize diet. Five of these indices, combining two or three measures of prey importance: weight, abundance and frequency of occurrence, are mathematically compared in this work. Data from a feeding study of sparid fish show that different indices can produce different results. Four classifications of food, in terms of preferences, are applied to Sparidae, compared and discussed. A new method of classifying the prey of fish into groups is proposed. It characterizes the main items in the diet, whatever feeding index is chosen for the analysis.
Tipo: Text
Palavras-chave: Quantitative distribution; Weight; Predation; Stomach content; Feeding.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1773.pdf

Approche du regime alimentaire des juveniles de bars et de limandes en baie de Somme.
Provedor de dados: 5
Autores: Leaute, Jean-pierre.
Stomach contents of juveniles of sea bass (Dicentrarchus labrax ) and common dab (Limanda limanda ) collected during September 1982 from Bay of Somme and the neighbor coast to Penly, were examined. The most part of the diet of young sea bass are the crustaceans, Sedentary polychaetes appear to be the major food item for common dab. For these two young predator species, food preferences tend to change early: cumaceans, then common edible shrimp, for sea bass, Tube worm tentacles, then part of whole individuals are preferred by common dab.
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Prey selection; Food preferences; Stomach content; Diets.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1789.pdf

Alimentation du merlan Merlangius merlangus L. en Mer Celtique
Provedor de dados: 5
Autores: Du Buit, Marie-henriette; Merlina, Frédéric.
The importance of predation by the whiting (Merlangius merlangus ) from the Celtic Sea has been studied by analysis of stomach contents. Eight hundred and thirteen whitings have been examined during 1984-1986 period. Fish food totalizes 97% of food. It is chiefly a swimming species: no cannibalism has been observed. The daily food index varies between 2 and 4% according to the length and the annual consumption on fishes of nominal catches (11230 t for 1983) would reach 135,000 t corresponding to species already fished for human consumption and the fish meal industry.
Tipo: Text
Palavras-chave: Celtic Sea; ANE; Gadidae; Pisces; Merlangius merlangus; Predator control; Stomach content; Feed composition; Feeding.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1744.pdf

First record of Siganus randalli (Teleost, Siganidae) in New Caledonia, and comments on its diet
Provedor de dados: 5
Autores: Moleana, Thibaud; Della Patrona, Luc; Meziane, Tarik; Letourneur, Yves.
Background  Most of the 29 Siganidae species are widely distributed through the Indo-Pacific area. In New Caledonia, these family was represented by 12 species. The present report is the first record of Siganus randalli in New Caledonian waters and provide information on its diet. Methods  Three specimens of Siganus randalli were caught in shallow mangrove waters of the southern part of New Caledonia. Their stomach contents and isotopic signatures (carbon and nitrogen) were analyzed and compared to others siganids species. Results and conclusion  This note provides the most southerly record of the rabbitfish Siganus randalli, which extends its distribution range by 1200 km southward and 1300 km southwest. The data on its diet, when compared with other...
Tipo: Text
Palavras-chave: Variegated rabbitfish; Diet; Stomach content; Isotope; SW pacific.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00350/46161/45859.pdf

Diet of red squid (Ommastrephes bartramii)in the Southwest Atlantic
Provedor de dados: 20
Autores: Ivanovic, M.L.; Brunetti, N.E.
The diet of red squid (Ommastrephes bartramii)during autumn 2001 and2002 in the SW Atlantic region off Argentina and Uruguay (33° S-42° S;46° W-55° W)was composed mainly of fish (55-68. ), followed by squid (32-37. ) and zooplankton (8. only in 2001). Around 60. of the fish eaten was identified as myctophids and corresponded to five genera and seven species, with higher frequency of Hygophum hygomii (24-34. ). The identification of squids consumed reached 20. in 2001 and 80. in 2002 and the only species identified was O. bartramii, which implies percentages of cannibalism of 5.6. and 25.8. each year. For the range analyzed, 141-443 mm of mantle length (ML), the consumption of fish and squid did not show any relation to the size of predator. In 2001 the...
Tipo: Journal Contribution
Palavras-chave: Feeding behaviour; Food consumption; Food preferences; Stomach content; Feeding behaviour; Food consumption; Food preferences; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_3024.
Ano: 2004
URL: http://hdl.handle.net/1834/1403

Las rayas del género Psammobatis de la plataforma Argentina: biología y ecología
Provedor de dados: 20
Autores: Mabragaña, E.
Las rayas (Rajidae)conforman un grupo de peces cartilaginosos de hábitos bentónicos, presentes en casi todos los mares del mundo. En la plataforma continental argentina (PCA)han sido reconocidas 23 especies de rayas pertenecientes a 7 géneros (Atlántico SO). El género Psammobatis Günther, objeto del presente estudio, es endémico de Sudamérica y está compuesto de 8 especies. Dentro de las rayas de la PCA es el que mayores problemas taxonómicos ha tenido debido a su morfología y diversidad. Las características de historia de vida hacen que este grupo sea muy vulnerable a la explotación pesquera. Hasta cerca de una década atrás, en nuestro país las rayas eran capturadas incidentalmente, siendo descartadas o destinadas a la harina de pescado, pero en los...
Tipo: Theses and Dissertations
Palavras-chave: Abundance; Taxonomy; Identification keys; Geographical distribution; Reproduction; Trophic relationships; Stomach content; Taxonomy; Geographical distribution; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2007
URL: http://hdl.handle.net/1834/3130

Estructura de la comunidad bentónica y ecología trófica de Scianeidae (Pisces: Osteichthyes) en el estuario del Río de la Plata
Provedor de dados: 20
Autores: Giberto, D.A.
Benthic communities of the Río de la Plata estuary and their trophic link with Micropogonias furnieri, Paralonchurus brasiliensis, Menticirrhus americanus, Cynoscion guatucupa, Macrodon ancylodon and Umbrina canosai, six species of the Sciaenidae Family, were studied. Benthic composition was characterized using 122 sampling sites between 1999 and 2005. Multivariate and univariate statistical tools were used to analyze diversity, abundance and biomass patterns. A total of 370 taxa were found at the study area. Four areas were established using benthic composition: Inner Río de la Plata (RdP), middle RdP, outer RdP and Marine zone. Higher abundance (9,877 ind/m2) and biomass (1,456.8 g/m2) values were found at middle RdP. Nephtys fluviatilis, Heteromastus...
Tipo: Theses and Dissertations
Palavras-chave: Benthos; Estuarine organisms; Brackishwater environment; Feeding behaviour; Food organisms; Trophic levels; Stomach content; Trophic levels; Benthos; Feeding behaviour; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_7969; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_1050.
Ano: 2008
URL: http://hdl.handle.net/1834/2952

Estudio comparado del nicho trófico de distintas especies suspensívoros en la comunidad del mejillón (Mytilus platensis)
Provedor de dados: 20
Autores: Beraja, A.R.
La comunidad circalitoral de Mytilus platensis presenta dos tipos de tramas tróficos; una que depende de la producción primaria fitoplanctónica y otraíde los detritos orgánicos en sedimentos. (Penchaszadeh,1971 a). Entre los organismos suspensívoros de la comunidad se destacan el propio mejillóm adulto y juvenil, otros Pelecipodos como Ostrea puelchana y Chlarnys tehuelcha , Gasterópodos (Crepidula un~uiformis) y otros organismos como Cirripedios y algunos pOliquetos. Si bien hasta el presente se ha tipificado la dieta de la mayoría de los organismos carnívoros de la comunidad (Penchaszadeh,inéd.1973) no se había analizado cuantitativamente la dieta de los suspensívoros filtradores fitoplanct6fagos. Los organismos filtradores son aquellos que se alimentan...
Tipo: Theses and Dissertations
Palavras-chave: Trophic structure; Stomach content.
Ano: 1973
URL: http://hdl.handle.net/1834/3880

Estudios bionómicos del bentos de la plataforma bonaerense y su relación con el resto de la plataforma continental argentina.
Provedor de dados: 20
Autores: Roux, A.
The macrobenthic assemblages of the Buenos Aires Province(Argentina) continental shelf were studied from samples collected by the R/V Capitán Cánepa and R/V Capitán Oca Balda along a transect from38 m to 218 m depth. Three faunistic areas were determined,corresponding to the coastal, central and external shelf, inhabited by species originated from the Argentine and/or Magellanic Zoogeographical Provinces. These results confirm the presence of different ecological areas in the Argentine continental shelf. Mussel (Mytilus edulis platensis) beds, red porgy (Sparus pagrus) fishing ground and the Argentine-Uruguayan Common Fishing Zone (CFZ) demersal fishing grounds at the continental shelf of Buenos Aires Province were also analyzed to increase the knowledge...
Tipo: Theses and Dissertations
Palavras-chave: Zoobenthos; Fishery surveys; Exclusive economic zone; Ecological associations; Dominant species; Stomach content; Fishing grounds; Dominant species; Zoobenthos; Ecological associations; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_2362; Http://aims.fao.org/aos/agrovoc/c_15487; Http://aims.fao.org/aos/agrovoc/c_32845; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1996
URL: http://hdl.handle.net/1834/1489

Un pez aguja (Singnathus acicularis Jen.) actuando como cuerpo extraño en una pescadilla (Cynoscion striatus)
Provedor de dados: 20
Autores: Bertullo, V.H.; Perez Hettich, F.
Durante la inspección sistemática del pescado, efectuado en el Servicio Oceanográfico y de Pesca, constatamos un caso curioso que describimos por considerarlo insólito.
Tipo: Journal Contribution
Palavras-chave: Marine fish; Stomach content.
Ano: 1956
URL: http://hdl.handle.net/1834/3210

Marea roja ocasionada por &lt;i&gt;Scripsiella trochoidea&lt;/i&gt; en el estuario del río Chone
Provedor de dados: 20
Autores: Coello, D.
Se presentan los resultados obtenidos durante un evento de marea roja en el estuario del río Chone y que las variables físicas, químicas, planctónicas y de contenido estomacal. Se considera que la marea roja registrada fue originada por &lt;i&gt;Scripsiella trochoidea&lt;/i&gt; y no habría tenido características tóxicas y que la mortalidad de chuhueco &lt;i&gt;Cetengraulis mysticetus&lt;/i&gt;, habría sido resultado de los descensos del oxígeno que habría provocado esta proliferación algal.
Tipo: Journal Contribution
Palavras-chave: Red tides; Mortality causes; Physicochemical properties; Stomach content; Phytoplankton.
Ano: 2010
URL: http://hdl.handle.net/1834/5381

Ecología trófica del lenguado Paralichthys patagonicus (Jordan, 1889) en el Ecosistema Costero Argentino-Uruguayo
Provedor de dados: 20
Autores: Troccoli, G.H.
Se determinaron los hábitos alimentarios y la composición de la dieta del lenguado patagónico Paralichthys patagonicus (Jordan, 1889) a partir de análisis cualitativos y cuantitativos del contenido estomacal. Los ejemplares provinieron de 16 muestreos de desembarque de la flota comercial realizados entre febrero de 2009 y abril de 2010 en el puerto de Mar del Plata (Prov. Buenos Aores, Argentina). Se analizaron un total de 828 lenguados de los cuales el 61,8% (512) fueron hembras y 36,7% (304) machos. Del total de estómagos analizados, el 32,9% (272) presentó alimento (184 hembras y 84 machos). Paralichthys patagonicus es un predador ictiófago de amplio espectro trófico (20 ítems presas). Anchoíta (Engraulis anchoita) fue la presa más consumida, seguida...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Trophic levels; Predator prey interactions; Population structure; Stomach content; Paralichthys patagonicus; Marine environment.
Ano: 2011
URL: http://hdl.handle.net/1834/4522

Características de algunas rayas de la región sudpatagónica
Provedor de dados: 20
Autores: Sánchez, M.F.; Mabragaña, E.
Data considered in this paper were obtained during a research cruise carried out on board of RV Dr. E.L. Holmberg from INIDEP (Instituto Nacional de Investigacion y Desarrollo Pesquero) during March-April 2000 in the area between 48°S and 55°S (S Patagonian) region, SW Atlantic. From 61 bottom trawls a total of 355 specimen belonging to 11 skate species were collected. This represents, in number, 1.8 of the total species biomass. All skate species were identified and some biological characteristics for each species analyzed. Abundance was estimated in tons and the distribution area of each species was determined. Total weight and morphometric data by sex were measured  total length, disc width and clasper length. Stomach content and macroscopical...
Tipo: Journal Contribution
Palavras-chave: Marine fish; Abundance; Stomach content; Food organisms; Diets; Feeding behaviour; Community composition; Feeding behaviour; Http://aims.fao.org/aos/agrovoc/c_10778.
Ano: 2002
URL: http://hdl.handle.net/1834/2426

Hallazgo del pargo Cunaro Rhomboplites aurorubens (Cuvier) (Pisces: Lutjanidae) en un arrecife coralino somero
Provedor de dados: 20
Autores: Acero-P., A.; Garzón-Ferreira, J.
Varios individuos del pargo cunaro Rhomboplites aurorubens fueron observados formando cardúmenes heteroespecíficos entre 10 y 20 m de profundidad en un arrecife coralino en Isla Tesoro (Archipiélago del Rosario, Caribe colombiano). Uno de esos ejemplares fue colectado y examinados sus caracteres meristicos y morformétricos, así como su contenido estomacal y madurez sexual. Se compara con la literatura existente sobre la biología y ecología de este pargo para tratar de explicar su presencia en esas condiciones.
Tipo: Journal Contribution
Palavras-chave: Fish; Stomach content; Fish; Http://aims.fao.org/aos/agrovoc/c_15903.
Ano: 1984
URL: http://hdl.handle.net/1834/4036

Hábitos alimentarios y selectividad de habitat de la guitarra chica, Zapteryx brevirostris (Chondrichthyes, Rhinobatidae), en el ecosistema costero bonaerense y uruguayo
Provedor de dados: 20
Autores: Barbini, S.
The diet composition and feeding habits of Zapteryx brevirostris were studied through stomach contents analysis. 158 specimens were collected from 7 research cruises carried out by Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP, Argentina)between 2001 to 2004, in the Buenos Aires Province (Argentina) and Uruguay coasts (34°-41° S), until 50 m depth. Of the total stomach analysis, 81percentage contained food. According to the alimentary index expressed as a percentage (IA percentage ), indicated that polychaetes, decapods and lancelets were more consumed prey, representing 44.37percentage , 19.94 percentage and 17.36 percentage of the diet, respectively. The amphipods (8.74 percentage ), cumaceans (4.11percentage ) and isopods (3.29...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Food consumption; Habitat selection; Stomach content; Feeding behaviour; Food consumption; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3016.
Ano: 2006
URL: http://hdl.handle.net/1834/3133

La alimentación de tiburones martillo jovenes (Sphyrna lewini) capturados en el Golfo de Nicoya, Costa Rica (Nota)
Provedor de dados: 20
Autores: López-Garro, A.; Zanella-Cesarotto, Il.; Arauz-Vargas, R.
Sharks present strong intraspecific changes in feeding habits, which may vary according to size, geographic location and season. This study analyzed the stomach contents of 52 juvenile scalloped hammerhead sharks (25 females and 27 males) caught by artisanal vessels in the Gulf of Nicoya. Regarding the organisms found in the stomachs, 41.07 % were teleost fish, 30.36 % mollusks and 28.57 % crustaceans. Mollusks presented  the  highest  Relative Importance Index  (RII) (43.05  %), followed by teleost fish (41.37 %) and crustaceans (15.58 %). Squids (Loliginidae) were the items with the greatest RII (32.57 %). By means of the Pianka index, a relatively low overlap between sexes was identified, suggesting a  spatial sexual segregation and, in consequence, an...
Tipo: Journal Contribution
Palavras-chave: Stomach content; Shark fisheries.
Ano: 2010
URL: http://hdl.handle.net/1834/4027

Ecología reproductiva y hábitos alimentarios del pez angel, Squatinaguggenheim (Chondrichthyes: Squatinidae), en el Distrito Biogeográfico Bonaerense, entre 34° y 42°S
Provedor de dados: 20
Autores: Colonello, J.H.
The reproductive ecology and feeding habits of Squatina guggenheim inthe SW Atlantic ecosystem between 34° and 42°S were studied. For the reproductive study, 423 individuals were obtained in 12 research cruises between 2000 and 2004. Reproductive parameters were analyzed in two oceanographic systems, the Rio de La Plata estuary (ERLP), Argentine-Uruguayan waters, and the El Rincon (ER), Argentina, Buenos Aires Prov. The feeding habits were analyzed using 329 stomach contents of individuals taken in ERLP (264)and ER (65 ER). For this study the individuals were reproductively (adults and juveniles)and seasonality (fall-winter and spring-summer)grouped. In ERLP the maximum total length was 920 mm for females and 865mm for males; in ER the maximum TL for...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Food preferences; Stomach content; Sexual maturity; Reproduction; Feeding behaviour; Food preferences; Sexual maturity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2005
URL: http://hdl.handle.net/1834/2596

Alimentación de la vieira patagónica Zygochlamys patagonica (King y Broderip, 1832) en el banco Reclutas (39ºS-55ºW) durante un período anual
Provedor de dados: 20
Autores: Schejter, L.
Zygochlamys patagonica is distributed in the Atlantic Ocean from 35 degree S to Tierra del Fuego (Argentina), and in the Pacific Ocean, up to 42 degree S, between 40 and 200 m depth. There are 9 beds in the Argentinian Sea. Scallops are suspensivore organisms, feeding on detritus and phytoplankton. The aims of this thesis are to make a quali-quantitative study of the diet of the Patagonian scallop, to detect seasonal changes in diet and to link these results with oceanographic conditions and with the growth pattern. Gut contents of 180 scallops were analyzed from samples (n=30) taken in June, August, October and November 1996, and February and March 1997. This procedure was tested statistically. Twelve species of diatoms and resting stages, five species of...
Tipo: Theses and Dissertations
Palavras-chave: Feeding; Stomach content; Feeding; Http://aims.fao.org/aos/agrovoc/c_2838.
Ano: 2000
URL: http://hdl.handle.net/1834/3916

Importancia de diferentes taxa de copepodos en la dieta de los adultos de anchoita (Engraulis anchoita) bonaerense durante la época reproductiva
Provedor de dados: 20
Autores: Padovani, L.
Engraulis anchoita is the most abundant and widespread ichthic species in the SW Atlantic. Two populations of the species occur in the Argentine Sea, a northern one or Bonaerense (34 degree -41 degree S)and a southern one or Patagonian (41 degree -47 degree S). The former performs an annual migratory cycle which includes the concentration in the northern area in winter, the distribution in coastal waters off Buenos Aires prov. during spring spawning period and the concentration in the shelf feeding ground in summer. In this work the feeding habits of the northern population were studied in its spring habitat. Fish samples were obtained in 16 stations from the Buenos Aires prov. shelf, during a research cruise of the INIDEP (National Institute for Fisheries...
Tipo: Theses and Dissertations
Palavras-chave: Abundance; Environmental conditions; Feeding behaviour; Food preferences; Stomach content; Zooplankton; Ichthyoplankton surveys; Feeding behaviour; Food preferences; Zooplankton; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2006
URL: http://hdl.handle.net/1834/2600

Ecología trófica de la pescadilla de red, Cynoscion guatucupa (Pisces: Sciaenidae), en aguas del Atlántico sudoccidental.
Provedor de dados: 20
Autores: García, S.
Trophic spectrum of Cynoscion guatucupa (striped weakfish) was analyzed through stomach content of individuals coming from two areas of Buenos Aires coast (38° 30'S - 41° 30'S): Argentine - Uruguayan Fishing Common Zone (AUFCZ) and El Rincón area (Argentine Sea, SW Atlantic). The stomach contents of 3323 individual captured in research cruises carried out during 2004 and 2005 was determined. In the diet 39 prey items were identified corresponding to 4 Phyla. Trophic spectrum was determined with Index of Relative Importance (IRI), where fishes were the principal prey (72,53 percentage IRI), crustaceans were secondary prey (27,44 percentage IRI) and with minor values polychaetes and mollusk (0,2 percentageIRI) were found. Pelagic fish was the predominant...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Trophic levels; Stomach content; Food consumption; Predation; Food organisms; Shared stocks; Feeding behaviour; Trophic levels; Food consumption; Predation; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_7969; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_6162.
Ano: 2007
URL: http://hdl.handle.net/1834/3583

Alimentación del pez limón, Seriola lalandi (Valenciennes, 1833 in Cuvier y Valenciennes, 1833) en aguas bonaerenses
Provedor de dados: 20
Autores: Vergani, M.
The yellowtail kingfish, Seriola lalandi, Carangidae (Valenciennes, in Cuvier y Valenciennes, 1833) is a pelagic, schooling fish, with gregarious behaviour. It is a circumglobal species from tropical and temperate waters. Adult S. lalandi migrate to Argentine waters (SW Atlantic) during summer months (January-April). They have been reported from Argentine waters in depths of 20-36 m between 36°S and 38° and, as reported elsewhere in the world, are often associated with rocky reefs. Samples of S. lalandi were caught using trolling lines during daytime around rocky reefs at 35° 52'-35° 58'S and 54° 45'-54° 48'W, on February 15-22, 2002. Sixty-six adult S. lalandi were analyzed, with specimens measured (LT) and weighted (WT). The length-weight relationship...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Feeding migrations; Nursery grounds; Stomach content; Taxonomy; Length-weight relationships; Feeding behaviour; Taxonomy; Nursery grounds; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_25438.
Ano: 2005
URL: http://hdl.handle.net/1834/2561

Análisis del contenido estomacal del Camarón Titi Xiphopenaeus kroyeri (Heller) (Crustacea: Natantia: Penaeidae)
Provedor de dados: 20
Autores: Costés, M.L.; Criales, M.M.
Juveniles y adultos del camarón titi Xiphopenaeus kroyerí (Heller) fueron colectados mensualmente en Costa Verde (Ciénaga), Caribe colombiano, entre septiembre 788 y junio /89. Se determinaron los Ítems alimentarios más importantes, siendo estos en orden descendente: detritus, fragmentos de conchas de bivalvos, poliquetos, foraminíferos y crustáceos. Se detectaron diferencias en la alimentación entre la época lluviosa (septiembre a diciembre) y la época seca (enero a junio), presentándose algunos ítems como rotíferos, esponjas y radiolarios sólo en la época seca. Se analizaron las frecuencias de aparición de los diferentes Ítems en camarones adultos y juveniles, encontrándose que ciertos grupos como rotíferos y briozoos son más frecuentes en juveniles. Se...
Tipo: Journal Contribution
Palavras-chave: Shrimp culture; Marine crustaceans; Stomach content.
Ano: 1990
URL: http://hdl.handle.net/1834/3883

Mapeo sinóptico del macrobentos asociados a la dieta en fondos de alimentación de la corvina rubia Micropogonias furnieri en el área de El Rincón, Noviembre, 1994
Provedor de dados: 20
Autores: Bremec, C.; Lasta, M.L.
The faunistic characteristics in feeding grounds of Micropogonias furnieri, considering many relationships with the diet of the species in the Argentine-Uruguayan Common Fishing Zone, are studied. Benthos was collected in 33 sampling stations during the reseach cruise H-13/94, between 9-44 meters depth in the area El Rincón (Buenos Aires Prov., Argentina), with hard bottom and Picard dredges. Cluster analysis (Q mode, Sorensen index) was applied to these data and to the invertebrate by-catch obtained in 58 demersal hauls. Frequency size distribution of mussels in its distribution area is also presented. Stomach contents of 177 specimens of white croaker were studied from the percentage of ocurrence frequence of every alimentary item. Present results and...
Tipo: Journal Contribution
Palavras-chave: Zoobenthos; Nursery grounds; Stomach content; Zoobenthos; Nursery grounds; Http://aims.fao.org/aos/agrovoc/c_15487; Http://aims.fao.org/aos/agrovoc/c_25438.
Ano: 1998
URL: http://hdl.handle.net/1834/2476

Diet composition of Champsocephalus gunnari (Pisces,Channichthyidae)around South Georgia Islands, R/V Dr. Eduardo L.Holmberg survey, February/March 1994.
Provedor de dados: 20
Autores: Barrera-Oro, E.; Casaux, R.; Roux, A.
The diet composition of the icefish Champsocephalus gunnari caught around the South Georgia Islands and Shag Rocks, Atlantic sector of Antacrtica in February/March 1994 was analyzed using the frequency of occurrence (. ) method. Krill Euphausia superba followed by the hyperiid amphipod Themisto gaudichaudii were the main prey items at South Georgia and Shag Rocks; first were found in thestomachs more frequently than in past seasons around South Georgia,in parallel with the virtual absence of mysids and Thysanoessaspp. Krill was available for fish at the same level than in previous years (e.g. 1985, 1992). However, high proportion of empty stomachs were found at South Georgia and Shag Rocks, close to the values reported for the 1991 year of krill...
Tipo: Journal Contribution
Palavras-chave: Feeding; Food preferences; Stomach content; Fishery surveys; Feeding; Food preferences; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_3024.
Ano: 1997
URL: http://hdl.handle.net/1834/1931

Ecología trófica del congrio de profundidad Bassanago albescens (Barnard, 1923) en el Atlántico Sudoccidental (35º'S-45º'S)
Provedor de dados: 20
Autores: Izzo, L.P.
Los hábitos alimentarios del congrio de profundidad Bassanago albescens fueron estudiados por medio del análisis de los contenidos estomacales. Las muestras provinieron de campañas de investigación llevadas a cabo por el Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) durante el año 2009, en dos zonas de la Plataforma Continental Argentina (Norte: 36°S-41°S y Sur: 44°S-47°S). De los 222 estómagos analizados, 189 (83,78%) contenían alimento, identificándose un total de 34 ítems presa agrupados en 7 categorías. Los valores de %IRI indicaron que la principal categoría presa de la dieta fueron los cefalópodos, seguidos por isópodos y anfípodos. Se estableció la existencia a nivel poblacional de una tendencia hacia una estrategia generalista...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Food organisms; Predator prey interactions; Trophic levels; Stomach content; Bassanago albescens; Marine environment.
Ano: 2010
URL: http://hdl.handle.net/1834/5157

Distribución, áreas de concentración y estructura de la población del abadejo (Genypterus blacodes)
Provedor de dados: 20
Autores: Renzi, M.A.
The "abadejo" is one of the species that has been traditionally exploited in the Argentine Sea. Although the capture was not very important, it has been increased in the last years. In this work, the structure of the concentration areas of summer, spring and winter distribution and other biological items were analyzed, basing on the data collected during cruises effected by R/V "Walther Herwing" and R/V "Shinkai Maru" in these waters during 1978/79. Winter and spring distribution patterns showed the highest concentrations located between 41º and 48º SL, specially on the slope. Summer distribution pattern showed the concentration areas located between 43º30' and 48º30' LS shifted rather to the coast when comparing to the previous one. During the winter, in...
Tipo: Theses and Dissertations
Palavras-chave: Geographical distribution; Population structure; Feeding; Length-weight relationships; Stomach content; Diets; Seasonal distribution.
Ano: 1982
URL: http://hdl.handle.net/1834/5028

Anatomía comparada macro y microscópica del aparato digestivo de dos peces de regimen alimentario diferente: pez palo (Percophis brasiliensis) y saraca o lacha (Brevoortia aurea)
Provedor de dados: 20
Autores: Durquet, J.
Tipo: Theses and Dissertations
Palavras-chave: Digestive system; Stomach content; Animal morphology; Digestive system; Animal morphology; Http://aims.fao.org/aos/agrovoc/c_2275; Http://aims.fao.org/aos/agrovoc/c_421.
Ano: 1972
URL: http://hdl.handle.net/1834/3876

Estudios preliminares sobre las interrelaciones tróficas de 20 especies de peces del área costera bonaerense
Provedor de dados: 20
Autores: Pozzobon, M.V.
Realizada en el INIDEP (Instituto Nacional de Investigación y Desarrrollo Pesquero- Mar del Plata, Argentina).
Tipo: Theses and Dissertations
Palavras-chave: Ecology; Trophic relationships; Food webs; Diets; Stomach content; Ecology; Food webs; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_10973.
Ano: 1987
URL: http://hdl.handle.net/1834/3555

Pesca exploratoria del recurso dorado (Coryphaena hippurus) frente a la costa ecuatoriana durante marzo de 2010
Provedor de dados: 20
Autores: Herrera, M.; Coello, D.; Peralta, M.; Elías, E.; Cajas, J.; Castro, R.; Pesantes, F.; Chavarría, J.
Del 9 al 21 de marzo de 2010, se realizó el Crucero T10/03/01 durante el cual se efectuaron 10 lances de pesca entre 01º21.39' N-03º 02.55' S y entre las longitudes 080º 32.20' W-082º 57.08' W, empleando un palangre de superficie doradero. En los lances realizados frente a Esmeraldas y Manabí, se registraron las mayores capturas, con especímenes con mayor talla y peso promedio, con una temperatura superficial promedio de 27 ºC y termoclina ubicada entre los 10 y 50 m de profundidad con la isoterma de 20 ºC, próxima a la profundidad de cala de la línea de pesca. Hacia el sur (lances 7 al 10), ubicados frente al sur de Manabí, Península de Santa Elena y Golfo de Guayaquil. Las capturas estuvieron representadas por especímenes con talla y peso promedio...
Tipo: Journal Contribution
Palavras-chave: Exploratory fishing; Cruise reports; Biological sampling; Longlining; Thermocline; Feed composition; Stomach content; By catch.
Ano: 2010
URL: http://hdl.handle.net/1834/4799

Sistemática, biología y ecología del Titi Sicydium antillarum Grant (Pisces: Gobiidae) en la región de Santa Marta, Colombia
Provedor de dados: 20
Autores: Silva-Melo, L.; Acero-P., A.
Sícydium antillarum Grant es un gobiido abundante en las corrientes que bajan de la SierraNevada de Santa Marta (Colombia) al mar. Se estudió la población de la Quebrada Valencia y las postlarvas en las bocas de los ríos Manzanares y Gaira, entre febrero de 1987 y enero de 1988.  Se presentan datos morfológicos, merísticos y morfométricos de la especie; la población desovó de mayo a diciembre, con picos máximos en junio y octubre. La proporción hembras: machos fue casi 1:1 de enero a marzo; de abril a diciembre los machos se apoderan de un territorio y se dificulta su captura, principalmente en septiembre y octubre (proporción 9:1). La fecundidad máxima fue de 91067 huevos en una hembra de 109 mm; el 25% de los ejemplares alcanzó la madurez entre 60.0 y...
Tipo: Journal Contribution
Palavras-chave: Ecology; Ichthyology; Geographical distribution; Reproductive behaviour; Feeding behaviour; Biology; Morphometry; Stomach content; Ecology; Geographical distribution; Reproductive behaviour; Feeding behaviour; Ichthyology; Biology; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_37902; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3788; Http://aims.fao.org/aos/agrovoc/c_925.
Ano: 1990
URL: http://hdl.handle.net/1834/3889

El dorado, Salminus maxillosus (Pisces, Characiformes)en el Río de la Plata y Río Uruguay inferior
Provedor de dados: 20
Autores: Sverlij, S.B.; Espinach Ros, A.
Catch per unit effort (CPUE), lenght distribution, age, growth, reproduction, migrations and feeding were studies through samples collected with longlines and a gang of gill-nets of several mesh size. CPUE data showed a progressive decrease of the relative abundance in the Río de la Plata, during the study period. Age was studied from scales. Back-calculations of growth revealed the pressence of Lee's phenomenon. Means lenghts at age were greater in females. No significant difference was found in lenght-weight regressions from both sexes and sampling areas. Only young individuals from 1 to 6 years were caught. None of the fish studied had ripening gonads. Extensive migrations were recorded both in the Paraná and Uruguay rivers. Stomach contents analysis...
Tipo: Journal Contribution
Palavras-chave: Migrations; Catch/effort; Sex ratio; Size distribution; Scale reading; Growth curves; Reproduction; Stomach content; Sex ratio; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1986
URL: http://hdl.handle.net/1834/2032

Alimentación de Squalus acanthias y predación sobre Merluccius hubbsi en el Mar Argentino entre 34°47'-47°S.
Provedor de dados: 20
Autores: Garcia de la Rosa, S.B.; Sánchez, M.F.
The spiny dogfish, Squalus acanthias is an euribatic, euritermic and cosmopolitan specie. In the Argentine Sea it consumes diversity of preys, characteristic of a generalist and oportunist feeder, butits principal food items are ctenophores, fishes and cephalopods.Diet overlap between sexes was found between 34°-37°S and 101-150 m,where males principally feed on fishes, squid and polichaetes,sharing only ctenophores and hake consumption with the females. Near 62 cm TL there is a shift in the diet, due to an increment of argentine hake Merluccius hubbsi and squid Illex argentinus predation and a diminution in ctenophores Pleurobrachia pileus eating. Feeding shows an increment from north to south, its mode on 42°-43°S.Argentine hake is an important prey...
Tipo: Journal Contribution
Palavras-chave: Feeding behaviour; Predation; Stomach content; Trophic relationships; Feeding behaviour; Predation; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_6162.
Ano: 1997
URL: http://hdl.handle.net/1834/1938

Composición de la dieta de Pellona harroweri (Fowler) (Pisces: Pristigasteridae) en la Guajira, Caribe colombiano
Provedor de dados: 20
Autores: Criales-Hernández, M.I.
This study provides quantitative information on digestive tract content of Pellona harroweri caught on the Guajira shelf at a depth of 20 m. Preferential prey are crustaceans, mainly copepos and luciferids.
Tipo: Journal Contribution
Palavras-chave: Diets; Stomach content.
Ano: 2003
URL: http://hdl.handle.net/1834/3137

Gobioides broussoneti Lacepede (Pisces: Gobiidae) en el Caribe colombiano
Provedor de dados: 20
Autores: Acero-P., A.; Arenas-Granados, P.
Se registra la presencia del pe? Gobiidae Gobioides broussoneti en el área adyacente a la boca de la Ciénaga Grande de Santa Marta (Caribe colombiano). Se colectaron 29 especímenes, 28 de ellos Juveniles (48-51 mm) y el otro un macho maduro (553 mm); el contenido del tubo digestivo del adulto indica que la especie consume básicamente material detrítico vegetal, complementado con pequeños invertebrados.
Tipo: Journal Contribution
Palavras-chave: Coastal lagoons; Estuaries; Stomach content; Estuaries; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1990
URL: http://hdl.handle.net/1834/3891

Ecología trófica del gatuzo, Mustellus schmitti (Springer 1939), en el Mar Argentino
Provedor de dados: 20
Autores: Belleggia, M.
The narrownose smoothhound shark Mustelus schmitti is a benthic shark distributed from Florianópolis (27°S, Brazil) to Deseado River Estuary (47º45´S, Argentina) and occurs from shallow waters to 120m. This Thesis describes the feeding ecology of narrownose smoothhound shark M. schmitti in northern Argentinean Continental Shelf and is structured in four chapters. Chapter 1 contains an introduction and includes purpose, theory and concepts. In Chapter 2, the food habits of M. schmitti were studied based on analysis of stomach contents from specimens collected during the years 2008-2011. Of a total of 959 stomachs sampled during this period, 944 (98,43%) contained food. Prey items were identified to the lowest possible taxonomic level, counted and weighted....
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Trophic levels; Stomach content; Predator prey interactions; Ontogeny; Shark fisheries; Mustellus schmitti; Polychaeta; Marine environment.
Ano: 2012
URL: http://hdl.handle.net/1834/4775

Aspectos de la conducta alimentaria del mero (Epinephelus morio) del Banco de Campeche
Provedor de dados: 20
Autores: Giménez, E.; Anderes, B.; Moreno, V.J.; Burgos, R.
El trabajo expone los resultados del análisis de contenido estomacal de 855 individuos de mero (Epinephelus morio) capturados en el Banco de Campeche, con tallas entre 25 y 89 cm de longitud furcal (Lf). Los peces (28%), cangrejos (43%) y camarones (18%) predominan en el contenido gástrico. En tallas menores de 55 cm la frecuencia relativa de cangrejos es mayor (33%) y a partir de dicho tamaño los peces (42%) pasan a ser los más representados. Se detectó diferencia significativa en la distribución de frecuencias de las presas entre regiones, siendo la región central la de mayor abundancia. No se aprecian diferencias en la distribución de frecuencias de las presas por profundidad. La actividad alimentaria se manifiesta durante todo el año, con más...
Tipo: Journal Contribution
Palavras-chave: Feeding behaviour; Food preferences; Stomach content; Feeding behaviour; Food preferences; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3024.
Ano: 2001
URL: http://hdl.handle.net/1834/1807

Biometric relationships between body size and otolith size in 15 demersal marine fish species from the northern Brazilian coast
Provedor de dados: 36
Autores: OLIVEIRA,Rory Romero de Sena; ANDRADE,Marcelo Costa; MACHADO,Fabiola Seabra; CUNHA,Élida Jesana Santana; FREITAS,Flaviane Souto de; KLAUTAU,Alex Garcia Cavalleiro de Macedo; GIARRIZZO,Tommaso; SAINT-PAUL,Ulrich.
ABSTRACT The relationships between fish size and sagitta otolith measurements were calculated for the first time for 15 species belonging to six families from the northern Brazilian coast. A total of 220 fish were sampled from the bycatch landed by the bottom-trawl industrial shrimp-fishing fleet between August and September 2016. All species had strong relationships between otolith measurements and fish total length with the coefficient of determination (r 2) ranging between 0.71 and 0.99. The variable most strongly related to fish total length was found to be the sagittal otolith length (OL) with 98% of the variability. These relationships are a useful tool to estimate length and mass of preyed fish from otoliths found in stomach contents of marine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon delta; Bycatch; Sagitta; Neotropics; Sciaenidae; Stomach content.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000400299

Diet of fish (Characiformes: Characidae) during early developmental stages in the Upper Paraná river basin, Brazil
Provedor de dados: 3
Autores: Soares, Claudemir Martins; Hayashi, Carmino; Faria-Soares, Anna Christina Esper; Galdioli, Eliana Maria; Soares, Telma.
This study analyzed the diet during early developmental stages of Astyanax lacustris (AA), Piaractus mesopotamicus (PM), Megaleporinus obtusidens (MO) and Prochilodus lineatus (PL), under experimental conditions. Fish larvae, 350 of each species, were stocked separately in 16 fiber-cement tanks (500 L), from which, three larvae of each species were collected every three days, for 36 days. Tanks were fertilized (1.5 g NPK-7: 14: 8) and had 50% of the surface with macrophytes. Larvae were grouped in age classes = I: 5 to 11, II: 14 to 20, III: 23 to 29 and IV: 32 to 38 days and, dissected for analysis of the digestive tract. Methodologies of dominance, frequency of occurrence and points of food items were used. For AA and PM larvae, measurements were taken...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish larval; Stomach content; Astyanax lacustris; Megaleporinus obtusidens; Piaractus mesopotamicus; Prochilodus lineatus.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36846

Approximation to the diet of Thalassoma lucasanum (family Labridae) in the coral reef of La Azufrada, Gorgona Island, Eastern Tropical Pacific
Provedor de dados: 50
Autores: Palacios-Narváez,Stephania; Valencia,Bellineth; Giraldo,Alan.
ABSTRACT The Cortez rainbow wrasse, Thalassoma lucasanum, is an abundant reef fish of the Eastern Tropical Pacific (ETP). Unlike other species of the genus Thalassoma that are recognized as cleaners, in T. lucasanum this behavior is rare, since it feeds mainly on invertebrates through foraging. However, information on the trophic ecology of this species is limited, especially in the ETP. In this study, we characterize the feeding habits of T. lucasanum in Gorgona Island (ETP) from analyzing its gut contents and calculating its trophic niche. Mollusks were the main food resource of T. lucasanum, being this the most important and frequent prey item found in 100 % of the stomachs analyzed (n = 5). In terms of biomass, crustaceans had the greatest contribution...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coral reef fish; Stomach content; Trophic interactions; Colombian Pacific.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000300251

Food resource utilization of the skates Rioraja agassizii (Müller &amp;amp; Henle, 1841) and Psammobatis extenta (Garman, 1913) on the continental shelf off Ubatuba, South-eastern Brazil
Provedor de dados: 57
Autores: MUTO,E. Y.; SOARES,L. S. H.; GOITEIN,R.
The feeding habits of Rioraja agassizii (syn. Raja agassizii) and Psammobatis extenta (syn. Psammobatis glansdissimilis) of the South-eastern Brazilian coast were studied by means of stomach content analysis. The samples were obtained on eight seasonal oceanographic cruises, carried out between October 1985 and July 1987. The importance of each food item was evaluated on the basis of the Index of Relative Importance and the feeding similarity by Percentage of Similarity. The results indicated that both species are benthic feeders, preying mainly on Crustacea, especially Amphipoda, Caridea and Brachyura. Teleostei were also important for R. agassizii. Seasonal variation of the diet seems to be associated with the availability of the prey, whose distribution...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rajidae; Stomach content; Feeding habits; South Atlantic; Brazil.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200005

Seasonal variation of nutrients and energy in tambaqui's (Colossoma Macropomum Cuvier, 1818) natural food
Provedor de dados: 57
Autores: SILVA,J. A. M. da; PEREIRA-FILHO,M.; OLIVEIRA-PEREIRA,M. I. de.
The aim of this study was to evaluate the importance of fruits and seeds as food items in the natural diet of the tambaqui (Colossoma macropomum). During one year, tambaqui's stomach contents were collected, and their nutritional and energetic values were determined. During the flooding period, and while the river water was rising, which coincided with a high availability of fruits and seeds, the protein content of food was low (11%-15% of dry matter basis), whereas in the dry season, when tambaqui fed mainly zooplankton, there was a high protein content (45%-57% of dry matter basis). Lipid, carbohydrate, crude fiber, ash and gross energy contents of the diet varied depending on the river water level and the food items ingested.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tambaqui; Colossoma macropomum; Stomach content; Seasonal variation; Nutritional; Value.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400009