Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Neotropical Ichthyology (6) Zoologia (2) Rev. Bras. Zool. (1) Iheringia, Sér. Zool. (1) Autor Garcia,Alexandre M. (10) Vieira,João P. (7) Bemvenuti,Marlise A. (4) Marques,David M. L. Motta (3) Bastos,Rodrigo F. (2) Burns,Marcelo D. M. (2) Condini,Mario V. (1) Condini,Mario Vinicius L. (1) Condini,Mário V. (1) Condini,Vinicius (1) Geraldi,Ricardo M. (1) Hoeinghaus,David J. (1) Loebmann,Daniel (1) Mai,Ana C. G. (1) Miranda,Stéfanie F. (1) Mont'Alverne,Renata (1) Moresco,Alex (1) Pereyra,Paula E.R. (1) Seyboth,Elisa (1) Varela Junior,Antonio S. (1) Mais... Palavra-chave Feeding ecology (2) Neotropical fishes (2) Patos Lagoon (2) Patos-Mirim Lagoon complex (2) Subtropical wetland (2) Alimentação (1) Anablepidae (1) Artisanal fishery (1) Barrigudinho (1) Brazilian Long Term Ecological Research (PELD) (1) Crescimento (1) Dam (1) Ecological Reserve (1) Endangered species (1) Epinephelus marginatus (1) Estuary (1) Exotic species (1) Fish migration (1) Genidens barbus (1) Genidens genidens (1) Mais... Tipo do documento Info:eu-repo/semantics/article (10) Ano 2016 (1) 2013 (1) 2011 (2) 2006 (3) 2005 (2) 2004 (1) Mais... País Brazil (10) Idioma Inglês (8) Português (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 10 Primeira ... 1 ... Última Dieta e estratégia alimentar de Characidium rachovii (Characiformes, Crenuchidae) em riachos de planície costeira do sul do Brasil Iheringia, Sér. Zool. Bastos,Rodrigo F.; Miranda,Stéfanie F.; Garcia,Alexandre M.. Characidium rachovii (Regan, 1913) é uma espécie frequente em riachos da planície costeira do estado do Rio Grande do Sul, sul do Brasil. Entretanto, seu nicho trófico é ainda desconhecido. O presente trabalho teve como objetivos: (i) descrever a dieta de C. rachovii de três riachos costeiros do RS; (ii) avaliar a influência de um ecótono (mar-riacho) na dieta, comparando dois locais, um próximo do mar e outro distante, e (iii) avaliar o efeito do número de indivíduos analisados na riqueza da dieta. A análise do conteúdo estomacal de 139 indivíduos revelou que a espécie é especializada no consumo de Diptera (estágio aquático) e Amphipoda. Ao mesmo tempo, pode-se considerar que C. rachovii apresentou hábito alimentar oportunista, já que, apesar de tal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nicho trófico; Alimentação; Rarefação; Planície costeira; Riacho costeiro. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000400001 Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses Neotropical Ichthyology Garcia,Alexandre M.; Hoeinghaus,David J.; Vieira,João P.; Winemiller,Kirk O.; Marques,David M. L. Motta; Bemvenuti,Marlise A.. Taim Ecological Reserve is located within the Taim Hydrological System and was created to protect a heterogeneous and productive landscape harboring exceptional biological diversity in southern Brazil. Using stable isotope ratio analyses of carbon (delta13C) and nitrogen (delta15N), we provide a preliminary description of the food web structure, including estimates of production sources supporting fish populations and vertical trophic structure, within a representative lake of this system. A total of 21 organisms (5 macrophytes, 3 mollusks and 13 adult fishes) representing 16 species were collected for isotope analysis. Fishes had delta13C values ranging from -24.30º/oo to -28.31º/oo , showing concordance with the range of values observed for macrophytes... Tipo: Info:eu-repo/semantics/article Palavras-chave: Subtropical wetland; Neotropical fishes; Patos-Mirim Lagoon complex; Long-Term Ecological Research (LTER); Brazilian Long Term Ecological Research (PELD). Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200014 Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil Neotropical Ichthyology Garcia,Alexandre M.; Geraldi,Ricardo M.; Vieira,João P.. Pipefish species are poorly known representatives of the family Syngnathidae, which have been increasingly threatened by anthropogenic activities. We describe the diet composition and feeding strategy of southern pipefish Syngnathus folletti inhabiting a Widgeon grass (Ruppia maritima L.) bed in the estuarine zone of Patos Lagoon, southern Brazil. We also investigated whether mouth gape affected the size of prey items consumed and based on indirect evidence, we suggest possible pipefish foraging movements within the bed. Individuals were collected from December 1994 to March 1995 in a Ruppia maritima bed located in the Patos Lagoon Estuary during day and night periods. We analyzed the stomach contents of 108 individuals (54 females and 54 males). Both... Tipo: Info:eu-repo/semantics/article Palavras-chave: Syngnathidae; Ruppia maritima; Feeding ecology; Size-biased feeding; Prey size. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000300011 Checklist comparison and dominance patterns of the fish fauna at Taim Wetland, South Brazil Neotropical Ichthyology Garcia,Alexandre M.; Bemvenuti,Marlise A.; Vieira,João P.; Marques,David M. L. Motta; Burns,Marcelo D. M.; Moresco,Alex; Condini,Mario Vinicius L.. Taim Hydrological System is a unique subtropical wetland in southern Brazil harboring an exceptional biological diversity. In 1978, an ecological reserve was established to protect part of this area from increasing anthropogenic impacts in its surroundings. Fishes have been poorly investigated in this system. Based on a multi-gear sampling study encompassing several years (2001-2005), and on comparisons with previous fish inventories, we provide an up-to-date species list of fishes occurring in the Taim Wetland. In addition, we made the first preliminary description of fish dominance patterns found in the main lakes of the system (Flores, Nicola, Jacaré and Mangueira). Checklist comparison resulted in 62 fish species distributed in 24 families, with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Subtropical wetland; Neotropical fishes; Ecological Reserve; Invasive species; Patos-Mirim Lagoon complex. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200012 Diet and food consumption of the pearl cichlid Geophagus brasiliensis (Teleostei: Cichlidae): relationships with gender and sexual maturity Neotropical Ichthyology Bastos,Rodrigo F.; Condini,Mário V.; Varela Junior,Antonio S.; Garcia,Alexandre M.. Despite the importance of the pearl cichlid Geophagus brasiliensis for the aquarium fish trade worldwide and its wide distribution, many aspects of its biology, such as the relationships between its feeding ecology and reproductive behavior, are not fully understood in natural conditions on its native habitat. In this paper, we investigated its diet focusing on how differences in diet and food consumption are related to differences in gender and sexual maturity. The digestive tract of each individual was dissected and had its content analyzed, whereas each gonad was microscopically analyzed to determine gender (male/female) and sexual maturity (immature/mature). A total of 28 females and 31 males were analyzed. Mature individuals were more common than... Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding ecology; Parental care; Patos-Mirim lagoon complex; Reproduction. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400013 Evidence of habitat fragmentation affecting fish movement between the Patos and Mirim coastal lagoons in southern Brazil Neotropical Ichthyology Burns,Marcelo D. M.; Garcia,Alexandre M.; Vieira,João P.; Bemvenuti,Marlise A.; Marques,David M. L. Motta; Condini,Vinicius. The communication between the Patos and Mirim lagoon systems occurs via a natural channel called São Gonçalo. In 1977, a dam was built in this channel to prevent entrance of saline waters from Patos Lagoon estuary into the Mirim Lagoon. Our results showed an abrupt discontinuity in salinity and fish species distribution along the study sites. Sites below the dam showed salinity values higher than zero, whereas sites above had zero salinity values across all sampling periods. Marine and estuarine fishes (e.g., mullets Mugil platanus, M. curema, silversides Odontesthes argentinensis, Atherinella brasiliensis, sardine Brevoortia pectinata, and white croaker Micropogonias furnieri) were not captured above the dam. If these juvenile fishes could enter the Mirim... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dam; Fish migration; Artisanal fishery; Estuary. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000100006 Diet and feeding strategy of the dusky grouper Mycteroperca marginata (Actinopterygii: Epinephelidae) in a man-made rocky habitat in southern Brazil Neotropical Ichthyology Condini,Mario V.; Seyboth,Elisa; Vieira,João P.; Garcia,Alexandre M.. The dusky grouper (Mycteroperca marginata) is a marine species usually associated with rocky bottoms and reefs. The present work investigated the diet and feeding strategy of a dusky grouper population inhabiting a 4.5 km long pair of rocky jetties located in the mouth of Patos Lagoon estuary. No prior research has been conducted in such man-made habitat and the current study provides a basis for comparative studies on the diet of the dusky grouper populations inhabiting natural vs. man-made rocky habitats. Similarly with previous studies on natural substrates, crabs and fishes were the main food categories consumed (%IRI = 85.1 and %IRI = 12.6, respectively), whereas shrimps and mollusks had lower importance in the diet (%IRI = 1.9 and 0.4, respectively).... Tipo: Info:eu-repo/semantics/article Palavras-chave: Endangered species; Epinephelus marginatus; Jetties; Patos Lagoon; Stomach content analysis. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100015 Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon Rev. Bras. Zool. Pereyra,Paula E.R.; Mont'Alverne,Renata; Garcia,Alexandre M.. ABSTRACT Although ariid catfishe species are known to use coastal systems during some stages of their life cycles, the energetic contribution of estuarine resources and habitat use by many species in this family are still unclear. We used stable isotope analyses to estimate the assimilation of primary carbon sources and to infer the use of estuarine and freshwater habitats by two ariid catfishes Genidens barbus (Lacepède, 1803) and Genidens genidens (Cuvier, 1829). An isotopic mixing model revealed that juveniles of both catfish species consume considerable amounts of estuarine-produced carbon sources (G. barbus: 54-87% and G. genidens: 36-84%). However, G. genidens adults rely more on freshwater-derived carbon sources (31-77%) than on estuarine sources... Tipo: Info:eu-repo/semantics/article Palavras-chave: Genidens barbus; Genidens genidens; Isotopic mixing models; Patos Lagoon; Stable isotopes. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000200501 First records of introduced carps (Teleostei, Cyprinidae) in the natural habitats of Mirim and Patos Lagoon estuary, Rio Grande do Sul, Brazil Zoologia Garcia,Alexandre M.; Loebmann,Daniel; Vieira,João P.; Bemvenuti,Marlise A.. This is the first record in the wild of occurrence of four carp species (bighead Aristichthys nobilis (Richardson, 1845), common Cyprinus carpio carpio Linnaeus, 1758, silver Hypophthalmichthys molitrix (Valenciennes, 1844), and grass carp Ctenopharyngodon idellus (Valenciennes, 1844)) in the Mirim Lagoon and Patos Lagoon estuary. Our findings reinforce the hypothesis that during periods of elevated rainfall and freshwater discharge, exotic species could be easily transported from overflowed ponds and lakes into the Mirim-Patos Lagoon and then estuarine area. Tipo: Info:eu-repo/semantics/article Palavras-chave: Exotic species; Native fishes; Rice-field aquaculture; Sport fish ponds. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100027 Influência da salinidade no crescimento de juvenis de Jenynsia multidentata Jenyns (Pisces) Zoologia Mai,Ana C. G.; Garcia,Alexandre M.; Vieira,João P.. Tendo em vista que as populações de Jenynsia multidentata Jenyns, 1842 aparentemente atingem maiores comprimentos na região estuarina da Lagoa dos Patos quando comparadas com o ambiente límnico adjacente, foi realizado um experimento laboratorial, visando a comparação das taxas de crescimento, do comprimento e peso total dos juvenis da espécie mantidos em duas salinidades (zero e 16). Quatro proles de diferentes fêmeas foram separadas, logo após o parto, em aquários de quatro litros, sendo que metade dos indivíduos de cada prole foi submetida a salinidade zero e a outra metade a salinidade 16. Quatro aquários foram mantidos a temperatura constante de 28°C e, outros quatro aquários sofreram modificação da temperatura no décimo oitavo dia de experimento,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anablepidae; Barrigudinho; Crescimento; Salinidade. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300041 Registros recuperados: 10 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco