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| Registros recuperados: 31 | |
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| CORRÊA,DANIELE N.; QUINTELA,FERNANDO M.; LOEBMANN,DANIEL. |
| ABSTRACT The snakes Erythrolamprus jaegeri jaegeri and Erythrolamprus poecilogyrus sublineatus are sympatric and syntopic in the coastal region of southern Brazil. Herein, we analyzed the diet composition to evaluate the niche breadth and the prey selection by both species. We examined 192 specimens, and analysis of stomach contents revealed that both species predominantly consume anurans. However, the diet of E. j. jaegeri consists mainly of fish and amphibians, whereas that of E. p. sublineatus is broader, including fish, amphibians, reptiles and mammals. The Standardized Levins Index presented lower values for E. j. jaegeri (BA = 0.17) than for E. p. sublineatus (BA = 0.61), evidencing specialist and generalist strategies for each species, respectively.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Ophidians; Prey; Size; Niche. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100293 |
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| Fracasso,Hélio Augusto Alves; Branco,Joaquim Olinto; Barbieri,Edison. |
| Despite being widely distributed in South America and having relatively large populations, little is known about the trophic ecology of the South American Tern (Sterna hirundinacea) and Cabot's Tern (Thalasseus acuflavidus). In Brazil, South American and Terns Cabot's breed in mixed colonies from the state of Espírito Santo to Santa Catarina. Here, we describe results of a study of the feeding ecology of these two species during the reproductive seasons of April to October of 2003, 2005 and 2006 from Cardos Island, Santa Catarina, Brazil. A total of 6248, 5140, and 4006 fishes were delivered to chicks or females by South American Terns; and 1157, 628 and 98 fish and or other prey items by Cabot's Terns during the breeding seasons of 2003, 2005, and 2006,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cabot's Terns; South American Terns; Feeding ecology; Prey; Foraging. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000300016 |
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| Ávila Nájera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca potosina se estudió la abundancia y densidad del jaguar Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua Narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia cultural... |
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Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento; Abundance; Prey; Cultural value; Knowledge; Maestría; Ganadería; Fauna silvestre. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/106 |
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| Ávila Najera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca Potosina se estudió la abundancia y densidad del jaguar (Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia... |
| Tipo: Tesis |
Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento; Abundance; Jaguar; Prey; Cultural value; Knowledge. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1168 |
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| Ávila Najera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca Potosina se estudió la abundancia y densidad del jaguar (Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia... |
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Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento abundance; Jaguar; Prey; Cultural value; Knowledge. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/809 |
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| Avila Nájera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca potosina se estudió la abundancia y densidad del jaguar Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua Narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia cultural... |
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Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento; Abundance; Prey; Cultural value; Knowledge; Maestría; Ganadería; Fauna silvestre. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/106 |
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| Ávila Najera, Dulce María. |
| Durante el 2007 y 2008 en el ecotono (bosque de encino y bosque tropical) ubicado en el Ejido de San Nicolás de los Montes enclavado en la Huasteca Potosina se estudió la abundancia y densidad del jaguar (Panthera onca) y la abundancia relativa (IAR) de seis de sus presas potenciales, armadillo (Dasypus novemcinctus), coatí (Nasua narica), pecarí de collar (Pecari tajacu), venado temazate (Mazama temama), venado cola blanca (Odocoileus virginianus) y tuza real (Cuniculus paca). La abundancia del jaguar se estimó con base en trampeo fotográfico, la densidad por medio del programa de cómputo CAPTURE. El IAR se calculó con tres metodologías (transectos parcelas y trampas-cámara). Además, por medio de encuestas se determinó el índice de importancia... |
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Palavras-chave: Abundancia; Jaguar; Presas; Valor cultural; Conocimiento abundance; Jaguar; Prey; Cultural value; Knowledge. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/785 |
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| Shaiek, Moez; Romdhane, Mohamed Salah; Le Loc'H, Francois. |
| In order to define the structure of trophic network of Ichkeul Lake in Tunisia, diet of main teleost fish species was determined during two seasons, wet and dry. A total of 491 stomachs from 16 teleost species was analyzed. The analysis revealed spatial variability (East under marine influence and West with more continental effect) and temporal one (wet and dry seasons). Based on stomach contents, nine trophic groups were revealed, including eight monospecific groups. The main prey are mudflat snails (Hydrobia ventrosa, H. acuta), bivalves (Abra alba, Cerastoderma glaucum), amphipods and isopods, as well as seagrass (Potamogeton pectinatus, Ruppia cirrhosa) and water brackish algae (Ulva spp. and Chaetomorpha spp., Cladophora sp., Polysiphonia sp.). |
| Tipo: Text |
Palavras-chave: Ichthyofauna; Tunisia; Ichkeul Lake; Stomach contents; Prey; Diet; Trophic group. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00294/40541/73188.pdf |
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| Quero, Jean-claude; Spitz, J. |
| In 2005, a flying fish Cheilopogon cyanopterus, which doesn't figure among the Europeans faunas although pointed out in 1973, is captured in the Bay of Biscay. Following the catch of a Cubiceps gracilis near the coast in Britain, the authors recapitulating the former descriptions indicate that adults of this oceanic species remain in the open sea. Only juveniles come, rarely, to the coast. The species figures in the diet of common dolphins, striped dolphins, swordfishes and tunas. NOT CONTROLLED OCR |
| Tipo: Text |
Palavras-chave: Prey; Bay of Biscay; Cubiceps gracilis; Cheilopogon cyanopterus; Pisces; Golfe de Gascogne; Distribution; Cubiceps gracilis; Cheilopogon cyanopterus; Pisces. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3657.pdf |
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| Kopf, R. Keller; Yen, Jian D. L.; Nimmo, Dale G.; Brosse, Sébastien; Villeger, Sébastien; Tittensor, Derek. |
| Aim The aim of this study was test whether maximum body mass and jaw length are reliable predictors of trophic position (TP) in fishes, and to compare linear and nonlinear machine‐learning (ML) models incorporating biogeography, habitat and other morphological traits. Location Global. Time period Modern. Major taxa studied Fishes. Methods We compiled a global database of TP (2.0–4.5), maximum body mass, jaw length, order, ecoregion, habitat and other morphological traits of freshwater, estuarine and diadromous fishes (n = 1,991). We used Bayesian linear mixed effects and ML, with r2 analogues and 10‐fold cross‐validation, to explain and predict TP. Results Random forest models outperformed Bayesian models in all comparisons. Jaw length was the most... |
| Tipo: Text |
Palavras-chave: Allometric trophic network models; Allometry; Body mass; Gape limitation; Machine learning; Predator– Prey; Random forest; Trophic network theory. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00661/77349/78823.pdf |
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| Ronzani Cerqueira, Vinicius. |
| Several sea bass-rearing experiments were performed from hatching trough metamorphosis. The rearing units employed were 500 1 polyester tanks, where flow rate and temperature of seawater, light and suitable food (rotifer and artemia) were controlled. Stock density ranged between 50 and 100 larvae per liter. Individuals held in tanks with internal black walls developed faster and had a greater survival rate than those in white tanks. This suggests that a better contrast between preys and background assists the larvae to see food organisms more clearly. The sea bass larvae search for food is based only in vision and not trought mechanoreceptors or chemoreceptors. It was very difficult to evaluate the light intensity (50-5000 lux) influence on feeding,... |
| Tipo: Text |
Palavras-chave: Food; Prey; Light; Zootechnical; Digestive transit; Temperature; Dicentrarchus labrax; Intensive rearing; Sea bass. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/1986/these-1676.pdf |
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| Grose, Susan O.; Pendleton, Linwood; Leathers, Amanda; Cornish, Andrew; Waitai, Sheridan. |
| Climate change is expected to dramatically alter the distribution of many marine megafauna, impacting the people and economies that depend upon them. We build on the recent literature by developing a framework to describe the effects these changes will have on marine megafauna. With the goal to assist policymakers and grass roots organizers, we identify three illustrative pathways by which climate change drives these range shifts: (1) effects on habitat and shelter, (2) impacts on reproduction and disease, and (3) changing distribution of sources of food. We examine non-climate factors that may constrain or enable megafauna to adapt, creating winners and losers both for the species and the people dependent upon them. Finally, we comment on what management... |
| Tipo: Text |
Palavras-chave: Climate change; Marine megafauna; Habitat loss; Disease; Range shifts; Prey. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00641/75354/76152.pdf |
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| Prezoto,Fábio; Lima,Maria A.P.; Machado,Vera L.L.. |
| The social wasps are predators of several species of insects and the study of their preys can reveal their potential for programs of biological pest control. During the period of September 2000 to January 2002, were accomplished 70h of collections of the preys captured in twelve nests of Polybia platycephala Richards, placed in urban areas of Juiz de Fora municipality, Minas Gerais State, Brazil. The preys captured by P. platycephala include five orders of insects: Diptera (33.4%), Lepidoptera (28.6%), Hemiptera (12.0%), Hymenoptera (9.4%) e Coleoptera (7.2%). The mean weight of protein charge carried by the wasps was 1.9 ±1.6mg (n = 34, 0.3 - 6.2 mg), and the mean of protein transported per day was 22.8 mg. According to the results, we could estimate that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Social wasp; Foraging activity; Prey; Biological control. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000500019 |
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| Giovanetti,Manuela. |
| Cerceris is a very interesting genus, providing species living in all continents, in different climatic conditions, showing behaviors ranging from solitary to social. About the nesting habit of this genus, many authors described nest characteristics and prey, providing useful material for comparison. Yet, the majority of species studied so far live in temperate regions and we lack information about the tropical ones. The high number of species and their wide distribution suggest a phylogenetic adaptability that merit to be studied deeper. I investigated nest and prey of a tropical species, Cerceris binodis Spinola, on Barro Colorado Nature Monument in Panamá. The study was performed during three dry seasons, marking and excavating nests, observing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptability; Cerceris binodis; Clytrinae; Nest structure; Prey; Tropical wet forest. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000500002 |
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| Registros recuperados: 31 | |
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