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| Registros recuperados: 10 | |
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| Quintans,Federico; Scasso,Flavio; Loureiro,Marcelo; Yafe,Alejandro. |
| Diet of Cnesterodon decemmaculatus (Jenyns, 1842) and Jenynsia multidentata (Jenyns, 1842) were analysed in Lake Rodó, an urban hypertrophic lake from Montevideo, Uruguay. Both species displayed omnivory. The most consumed items for C. decemmaculatus were zooplankton, periphyton, phytoplankton and detritus; the diet of J. multidentata included zooplankton, insects, crustaceans and juvenile fish. Our results suggest that both species could be acting as facultative planktivores. The fish community of this lake is characterised by the dominance of C. decemmaculatus and J. multidentata. Under this condition, predation on large-bodied zooplankton could indirectly be contributing to maintain a high phytoplankton abundance and a low water transparency. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish feeding; Facultative planktivores; Eutrophication. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000100014 |
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| Medale, Francoise; Kaushik, Sadasivam. |
| Fish require diets containing 30 to 55% of crude protein and an amino acid supply precisely adapted to meeting the needs for optimal growth. Fish meal is an ideal protein source for aquafeed because it has a high protein level (65% to 72%) with an ideal proportion of all ten indispensable amino acids that meet the requirements of all fish species. However, finding alternatives to fish meal has become an absolute necessity in order to reduce the reliance of aquaculture on marine ingredients. Animal by-product meals (meat meal, bone meal, blood meal, poultry by-product meal, hydrolysed feather meal) are used as alternative protein sources in aquafeed in extra-European countries. Since the use of animal protein in aquafeed is forbidden in Europe (except non... |
| Tipo: Text |
Palavras-chave: Plant proteins; Fish meal; Fish feeding; Antinutritionnal factors; Amino acids. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6556.pdf |
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| Vidotto-Magnoni,Ana Paula; Carvalho,Edmir Daniel. |
| We evaluated the feeding of fish species of the Nova Avanhandava Reservoir, low Tietê River, São Paulo State, Brazil. Fishes were collected in two stretches of the reservoir: Santa Bárbara (14 samples) and Bonito (two samples) between September 2002 and March 2004, using gill and seining nets. The results of stomach contents analysis were expressed with the frequency of occurrence and gravimetric method, combined in the Alimentary Index (AI). The 20 species studied consumed 52 food items, grouped in 10 food categories: aquatic insects, terrestrial insects, crustaceans, fish, macroinvertebrates, microcrustaceans, algae, vegetal matter, detritus/sediment and scales. The aquatic insects (mainly Chironomidae, Odonata and Ephemeroptera) were the most common... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish feeding; Trophic ecology; Resource availability; Zoobenthos. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400020 |
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| Pereira,Larissa S.; Mise,Fábio T.; Tencatt,Luiz F. C.; Baumgartner,Matheus T.; Agostinho,Angelo A.. |
| ABSTRACT The limiting similarity theory predicts that divergence in the functional traits of native and introduced species is an essential component in species establishment, as introduced species must occupy a niche that is unoccupied by resident species. On the other hand, the environmental filtering hypothesis predicts convergence between introduced and native species, as both possess traits that make them adapted to the local abiotic environment. Morphology, spatial co-occurrence, diet, feeding selectivity, and niche breadth and overlap of Erythrinidae were evaluated to detect possible mechanisms acting in the coexistence between non-native and native species. Native (Hoplias sp. B and Hoplias cf. malabaricus) and non-native (Hoplerythrinus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Competition; Co-occurrence; Fish feeding; Morphology; Predation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200218 |
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| Gandega, Ch.; Dia, M.; Ghorbel, M.. |
| Le régime alimentaire de diagramme gris Plectorhynchus mediterraneus, étudié en fonction des saisons et de la taille, a porté sur 488 spécimens de longueurs à la fourche (Lf) variant entre 17,2 et 42,1 cm. Le coefficient de vacuité moyen est de 47,95%. Ce poisson se nourrit principalement de Crustacés Amphipodes et secondairement de Crustacés Isopodes. Les Décapodes, les Bivalves, les Céphalopodes et les Annélides sont des proies complémentaires de premier ordre, tandis que les Gastéropodes, les Chordés, les Poissons et les vrais crabes représentent des proies complémentaires de deuxième ordre. Les Crustacés Amphipodes constituent l’aliment de choix de ce poisson pendant toutes les saisons et quelle que soit sa taille. |
| Tipo: Journal Contribution |
Palavras-chave: Diets; Feeding behaviour; Feeding experiments; Food organisms; Seasonal variations; Fish feeding. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4491 |
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| Zaganini, Rosangela Lopes; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Vidotto-Magnoni, Ana Paula; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Carvalho, Edmir Daniel; Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| The Nile Tilapia, Oreochromis niloticus, and the Congo Tilapia, Tilapia rendalli, are important members of the African cichlids, and have been introduced to many Brazilian lakes and reservoirs. These species exhibit a large feeding flexibility and may modify their habits during their growth. In the Barra Bonita reservoir, these species are well adapted, representing more than 80% of fish. This study aimed to analyze ontogenetic variation with regard to the diet of these species in this important reservoir. Samples were taken monthly, from March 2007 to February 2008, in Anhembi, São Paulo State. Both species were analyzed by grouping individuals according to size classes. The coexistence of these species was observed in this environment, to which fish were... |
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Palavras-chave: 2.05.00.00-9 cichlids; Coexistence; Dam; Fish feeding; Paraná river basin Ecologia. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9971 |
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| LOVATTO,NAGLEZI M.; LOUREIRO,BRUNO B.; PIANESSO,DIRLEISE; ADORIAN,TAIDA J.; GOULART,FERNANDA R.; SPERONI,CAROLINE S.; BENDER,ANA BETINE B.; MÜLLER,JUCIELI; SILVA,LEILA P. DA. |
| Abstract The objective of this study was to evaluate growth and metabolic parameters of silver catfish fed with protein concentrates of sunflower meal (SMPC) and crambe meal (CrMPC). The study evaluated two levels of substitution, where 25 or 50% of animal protein was replaced with plant-based protein. A total of 300 silver catfish (14 ± 0.26 g) were used in five treatments and three replications, in fifteen 280-liter experimental units. The results were submitted to analysis of variance and the means of the control diet was compared to the remaining treatments by Dunnett’s test at 5% significance level. At the end of the trial, no differences were observed for the variables final weight and daily weight gain. However, minor feed conversion was observed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crambe abyssinica; Fish feeding; Helianthus annus; Jundiá; Liver metabolism; Plant-based protein concentrates. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703781 |
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| Registros recuperados: 10 | |
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