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| Registros recuperados: 48 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 48 | |
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