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Registros recuperados: 10
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Approche du regime alimentaire des juveniles de bars et de limandes en baie de Somme. ArchiMer
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
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Aspectos de la conducta alimentaria del mero (Epinephelus morio) del Banco de Campeche OceanDocs
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
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Diet composition of Champsocephalus gunnari (Pisces,Channichthyidae)around South Georgia Islands, R/V Dr. Eduardo L.Holmberg survey, February/March 1994. OceanDocs
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
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Diet of red squid (Ommastrephes bartramii)in the Southwest Atlantic OceanDocs
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
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Ecología reproductiva y hábitos alimentarios del pez angel, Squatinaguggenheim (Chondrichthyes: Squatinidae), en el Distrito Biogeográfico Bonaerense, entre 34° y 42°S OceanDocs
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
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El canibalismo como mecanismo regulador denso-dependiente de mortalidad natural en la anchoíta argentina Engraulis anchoita. Su relación con las estrategias reproductivas de la especie. OceanDocs
Pájaro, M..
Cannibalism is not an abnormal behaviour and it can be observed in a wide number of animals. In Pisces, cannibalism may be the result of endogenous intraspecific factors (nutritional state, size, age, state of development) or exogenous intraspecific factors (food, density, light). Nevertheless, external fertilization and the high fecundity of teleost fish tend to increase egg cannibalism, in particular among filter feeding fishes such as anchovies. In the present work, two important Argentine anchovy Engraulis anchoita stocks were studied. The first is to the north of 41°S, and spawns during spring on the coastal and shelf waters of Buenos Aires Province,Argentina, and Uruguay. The second one inhabits the Patagonian region, from 41°S to 47°S. It spawns...
Tipo: Theses and Dissertations Palavras-chave: Feeding behaviour; Cannibalism; Natural mortality; Fish larvae; Fish eggs; Spawning seasons; Stocks; Food preferences; Reproduction; Stocks; Food preferences; Feeding behaviour; Cannibalism; Fish larvae; Reproduction; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_9580; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998 URL: http://hdl.handle.net/1834/1476
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Estudio de la interrelaciones tróficas de dos elasmobranquios del Mar Argentino, en relación con las variaciones espacio-temporales y ambientales. Squalus acanthias (Squalidae) y Raja flavirostris (=Dipturus chilensis) (Rajidae). OceanDocs
Garcia de la Rosa, S.B..
As a general rule, sharks and rays play an important role in the energy exchanges among higher trophic levels of the marine food chain and some of them, with an important impact as piscivorous predators. Squalus acanthias (Squalidae) and Raja flavirostris (=Dipturus chilensis )(Rajidae), are two elasmobranchs with high apparition frequencies in the SW Atlantic, in the coastal and demersal fishing trawls, co-existing and predating on the principal stocks of bony fish there located, especially the Argentine hake (Merluccius hubbsi). Both species could be transformed into alternative fishing resources, even though they are not currently commercially developed as such. The knowledge on their biology, given in great detail, will provide information for a...
Tipo: Theses and Dissertations Palavras-chave: Geographical distribution; Abundance; Size distribution; Feeding behaviour; Diets; Interspecific relationships; Predation; Food preferences; Shark fisheries; Geographical distribution; Feeding behaviour; Predation; Food preferences; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_6162; Http://aims.fao.org/aos/agrovoc/c_3024.
Ano: 1998 URL: http://hdl.handle.net/1834/1487
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Importancia de diferentes taxa de copepodos en la dieta de los adultos de anchoita (Engraulis anchoita) bonaerense durante la época reproductiva OceanDocs
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
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Manipulated yeast diets as a partial algal substitute for the nursery culture of the hard clam <i>Mercenaria mercenaria</i> OMA
Coutteau, P.; Hadley, N.H.; Manzi, J.; Sorgeloos, P..
Rearing bivalve molluscs in commercial hatchery and nursery systems has so far relied on the production of live algae, which is costly and often unpredictable. Therefore the development of satisfactory artificial diet would greatly reduce the operating costs of bivalve operations. The development of techniques to improve the nutritional composition and digestibility of yeasts resulted in a product with great potential as a substitute for unicellular algae. Previous work on the Manila clam <i>Tapes semidecussata</i> showed that replacing 80% of the algae by these manipulated yeasts resulted in growth rates of 64 to 93% in comparison with the growth rate obtained for the algal control. In the present study a standard culture test for evaluating...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clam culture; Diets; Feed composition; Feeding experiments; Food preferences; Hatcheries; Invertebrate larvae; Rearing.
Ano: 1991 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2809
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THE GLOBALIZATION OF FOOD AND HOW AMERICANS FEEL ABOUT IT: RESULTS OF TWO SURVEYS AgEcon
Vander Mey, Brenda J..
The two surveys used for this presentation were conducted in South Carolina and across the United States. It was found that "globalization" includes global food supply. Americans prefer American-grown and -processed foods over imported foods. They are willing to pay more for locally grown and organically grown foods. Americans believe that their food is tastier and more nutritious than ever, but disagree that it is safer than ever. Respondents were uncertain about the health and environmental impacts of GM foods, but prefer that GM foods be labeled. Farmers, university professors, and the USDA are trusted sources of knowledge about food safety, while celebrities, business executives, and foreign governments generally are not. Since 9/11, Americans harbor...
Tipo: Journal Article Palavras-chave: Food safety; Food security; Bioterrorism; Global food supply; Food preferences; Consumer/Household Economics; International Relations/Trade.
Ano: 2004 URL: http://purl.umn.edu/27128
Registros recuperados: 10
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