Consulta: subjectFacets:"Feeding ecology"
Registros recuperados: 31
Data/hora: 03/06/2024 07:20:39

Спектр питания китообразных в Чёрном море
Provedor de dados: 13
Autores: Биркун, А. А.; Кривохижин , С. В.
Исследовано содержимое желудков у 157 выброшенных  на побережье и случайно пойманных  в рыболовные сети черноморских китообразных, включая 123 азовок (Phocoena phocoena relicta), 26 белобочек (Delphinus delphis ponticus) и 8 афалин (Tursiops truncatus ponticus) из вод Украины, Болгарии, Грузии и России. Зарегистрированы новые объекты питания для азовки – пиленгас (Liza haematocheila) и спикара (Spicara flexuosa), а также один вид для белобочки и афалины – сарган (Belone belone euxini). Показано, что в современных условиях основными пищевыми объектами  морских свиней в водах Украины являются шпрот (Sprattus sprattus phalaericus), мерланг (Merlangius merlangus euxinus) и хамса (Engraulis encrasicolus). Общий список рыб, входящих в рацион черноморских...
Tipo: Journal Contribution
Palavras-chave: Китообразные; Азовка; Белобочка; Афалина; Питание; Чёрное море; Cetaceans; Harbour porpoise; Common dolphin; Bottlenose dolphin; Feeding ecology; Black Sea.
Ano: 2009
URL: http://repository.ibss.org.ua/dspace/handle/99011/1196

Can dams affect the trophic structure of ichthyofauna? A long-term effects in the Neotropical region
Provedor de dados: 76
Autores: Lima,Felipe P. de; Nobile,André B.; Freitas-Souza,Diogo; Carvalho,Edmir D.; Vidotto-Magnoni,Ana P.
ABSTRACT Dams are considered an important source of modification upon the structure of aquatic communities and their reflexes are diverse on the fish fauna. Although there are several hydroelectric power plants in Brazil, the long-term effects on feeding activity of ichthyofauna are unknown. Thus, this study aimed to investigate the long-term effects of an old reservoir (fifty years) on the trophic dynamics of fish fauna. The diet of 20 fish species was analyzed, identifying 37 food items belonging to six trophic categories, which enable to create six trophic groups. The results found here suggests that throughout the creation of a reservoir, the trophic structure of the fish assemblages tend to reach trophic homeostasis, in which the fish community will...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Old dam; Trophic stabilization; Resource availability; Fishes.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100230

Diet of Astyanax paranae (Characidae) in streams with different riparian land covers in the Passa-Cinco River basin, southeastern Brazil
Provedor de dados: 76
Autores: Ferreira,Anderson; Gerhard,Pedro; Cyrino,José E. P.
An analysis of the diet of Astyanax paranae Eigenmann, 1914 in nine streams located in the Passa-Cinco River basin (upper Paraná River system) was performed to investigate the feeding habits of this species, check for possible spatial variations in diet and to investigate the influence of riparian vegetation in the composition of the diet. Stomach contents of 243 specimens were analyzed by the methods of relative frequency of occurrence and volume, and the diet was characterized by the alimentary index (AIi). The species showed insectivorous feeding habits, with a predominance of terrestrial and aquatic insects in the diet, varying by location. In most streams, resources of allochthonous origin were the most consumed. The participation of aquatic insects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Characiformes; Insectivorous fishes; Habitat features.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100011

Trophic relationships between metazooplankton communities and their plankton food sources in the Iles Eparses (Western Indian Ocean)
Provedor de dados: 5
Autores: Dupuy, Christine; Pagano, Marc; Got, Patrice; Domaizon, Isabelle; Chappuis, Alexis; Marchessaux, Guillaume; Bouvy, Marc.
Coral reef and atoll lagoons are among the most diversified marine ecosystems but also the most affected by the combined effects of climate change and human activities. The Iles Eparses (Scattered Islands) in the Western Indian Ocean have been little affected by human pressure and can be considered to be “pristine” ecosystems. Metazooplankton plays a major role in the functioning and productivity of aquatic ecosystems, and this study was undertaken: (i) to determine the spatial abundance, distribution and species composition of metazooplankton, (ii) to assess the effect of metazooplankton grazing on pico- and nanophytoplankton and (iii) to analyze the trophic positions of metazooplankton by using the stable isotope signatures of a wide variety of taxa and...
Tipo: Text
Palavras-chave: Metazooplankton; Spatial distribution; Grazing effect; Feeding ecology; Iles Eparses; Mayotte.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00317/42850/42259.pdf

Tracking, feather moult and stable isotopes reveal foraging behaviour of a critically endangered seabird during the non-breeding season
Provedor de dados: 5
Autores: Meier, Rhiannon E.; Votier, Stephen C.; Wynn, Russell B.; Guilford, Tim; Mcminn Grive, Miguel; Rodriguez, Ana; Newton, Jason; Maurice, Louise; Chouvelon, Tiphaine; Dessier, Aurelie; Trueman, Clive N.
Aim  The movement patterns of marine top predators are likely to reflect responses to prey distributions, which themselves can be influenced by factors such as climate and fisheries. The critically endangered Balearic shearwater Puffinus mauretanicus has shown a recent northwards shift in non-breeding distribution, tentatively linked to changing forage fish distribution and/or fisheries activity. Here, we provide the first information on the foraging ecology of this species during the non-breeding period. Location  Breeding grounds in Mallorca, Spain, and non-breeding areas in the north-east Atlantic and western Mediterranean. Methods  Birdborne geolocation was used to identify non-breeding grounds. Information on feather moult (from digital images) and...
Tipo: Text
Palavras-chave: Balearic shearwater; Diet; Discards; Feeding ecology; Fisheries; Migration; Trophic.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00358/46912/46817.pdf

Trophic niche of two co-occurring ophiuroid species in impacted coastal systems, derived from fatty acid and stable isotope analyses
Provedor de dados: 5
Autores: Blanchet-aurigny, Aline; Dubois, Stanislas; Quere, Claudie; Guillou, Monique; Pernet, Fabrice.
The trophic niches of 2 common co-occurring ophiuroids, Ophiocomina nigra and Ophiothrix fragilis (Echinodermata, Ophiuroidea), in 2 contrasting coastal systems of Brittany (France) were investigated. We used a combination of fatty acid biomarkers derived from neutral lipids and stable isotopic compositions to explore the contributions of oceanic versus continental inputs to the ophiuroids' diet. We investigated 2 different systems with an inshore versus offshore comparison. We sampled potential food sources and surveyed organisms every 2 mo for 1 yr. Spatio-temporal variations in stable isotopes and fatty acid profiles of the ophiuroids were generally low compared to interspecific differences. Fatty acid markers showed that both ophiuroids relied on...
Tipo: Text
Palavras-chave: Echinoderm; Feeding ecology; Ophiocomina nigra; Ophiothrix fragilis; Trophic markers; Green algae.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00270/38144/36278.pdf

Bivalve trophic ecology in the Mediterranean: Spatio-temporal variations and feeding behavior
Provedor de dados: 5
Autores: Purroy, Ariadna; Najdek, Mirjana; Isla, Enrique; Zupan, Ivan; Thebault, Julien; Peharda, Melita.
The trophic ecology of two bivalves, the clam Callista chione and the cockle Glycymeris bimaculata was studied using environmental and biochemical variables of the suspended particulate matter and the sediment. Samples were collected from two shallow sites, Pag and Cetina, in the coastal oligotrophic Mediterranean Sea, during a 17 month period. The temporal variation of the particulate matter reflected a mixture between marine and terrestrial sources throughout the year, with a clear marine influence during summer and fall, and predominance of terrestrial inputs during spring and winter. The digestive gland was a useful rapid turnover tissue, where the carbon isotope signal was species-specific and the nitrogen isotope one was site-specific. FA markers in...
Tipo: Text
Palavras-chave: Feeding ecology; Bivalves; Suspension feeder; Biochemical variables; Stable isotopes; Fatty acids; Adriatic sea; Niche partitioning; Coastal ecosystems.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00463/57478/59596.pdf

Marine diatoms sustain growth of bivalves in a Mediterranean lagoon
Provedor de dados: 5
Autores: Pernet, Fabrice; Malet, Nathalie; Pastoureaud, Annie; Vaquer, Andre; Quere, Claudie; Dubroca, Laurent.
Carbon stable isotopes and fatty acids were measured in the suspended particulate organic matter (POM) of the Thau lagoon to study its qualitative temporal changes in relation to environmental factors and to identify the food sources of bivalves over a one-yr-cycle in relation to their growth. Reciprocally, the impact of shellfish farming on POM was also studied. Oysters and mussels were sampled and measured for biometry, stable isotopes and fatty acid composition. Water samples were collected at two sites, both inside and outside of the shellfish farming area, to determine concentrations in POM, chlorophyll a (Chl a) and stable isotopes. Carbon isotopes and fatty acids in bivalves reflected seasonal changes in food sources, which varied consistently with...
Tipo: Text
Palavras-chave: Aquaculture; Bivalve; Competition; Feeding ecology; Growth; Trophic markers.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00075/18575/16177.pdf

Food habits and carnivory by a small size opossum, Gracilinanus agilis (Didelphimorphia: Didelphidae)
Provedor de dados: 81
Autores: Lessa,Leonardo G; Geise,Lena.
We investigated the diet of gracile mouse opossum, Gracilinanus agilis (Burmeister, 1854), from the analysis of 144 fecal samples collected between November 2009 and October 2011 in an area of savanna riparian forest in the Brazilian Cerrado. Invertebrates were the most frequently consumed food items (96.5%) followed by fruits of pioneer species (29.8%) and flowers (6%). We also observed the presence of fragments of bird vertebrae and downs in samples from 2 adult males, this being the first record of predation on small vertebrates by G. agilis. The presence of fragments of birds in the feces of the gracile mouse opossum suggests that despite the small size of this species and its primarily insectivorous habits, small vertebrates may be included in its diet.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Cerrado; Didelphimorphia; Diet; Feeding ecology; Marsupials.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832014000100016

Observations on the behaviour of the dugong (Dugong dugon Müller, 1776) from waters of the Lease Islands, eastern Indonesia
Provedor de dados: 16
Autores: Iongh, H.H. de; Bierhuizen, B.; Orden, B. van.
A small population of dugongs was discovered in coastal waters of the Lease islands in eastern Indonesia. Studies on behaviour and feeding ecology revealed information on the interaction with seagrass meadows, modes of surfacing and submergence times and behaviour in the presence of scuba divers. Regular concentrated feeding was observed in a grazing sward at a subtidal monospecific Halophila ovalis meadow, confirming earlier observations of regular recropping by dugongs of grazing swards, covered by monospecific Halodule uninervis, inside an intertidal multi-species meadow.
Tipo: Article / Letter to the editor
Palavras-chave: Dugong; Behaviour; Feeding ecology; Cultivation grazing.
Ano: 1997
URL: http://www.repository.naturalis.nl/record/534409

Feeding aspects of Leporinus amblyrhynchus (Characiformes: Anostomidae) in the first stages of formation of a Neotropical reservoir, Brazil
Provedor de dados: 83
Autores: Mendonça,Fernando Pereira de; Hahn,Norma Segatti; Loureiro-Crippa,Valdirene Esgarbosa.
Diet and feeding activity of Leporinus amblyrhynchus before, during and after the damming of the rio Corumbá (Goiás State March 1996 to February 1998) were investigated. The diet, evaluated using the Feeding Index (IAi), showed that this species presents an invertivore feeding habit, preying on basically Chironomidae larvae. The feeding activity, estimated using the quantity of food in the stomach during a 24-hour cycle, showed that the feeding occurs mainly in the daytime. Considering the feeding aspects of this species during the formation of the reservatório of Corumbá there were small variations in the parameters (diet and feeding activity) dealt in this study.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Invertivory; Freshwater.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300006

Diet composition and feeding strategy of the southern pipefish Syngnathus folletti in a Widgeon grass bed of the Patos Lagoon Estuary, RS, Brazil
Provedor de dados: 83
Autores: 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

Diet and ecomorphological relationships of an endemic, species-poor fish assemblage in a stream in the Iguaçu National Park
Provedor de dados: 83
Autores: Neves,Mayara Pereira; Delariva,Rosilene Luciana; Wolff,Luciano Lazzarini.
This study investigated the morphological and dietary relationships of the fish assemblage in a stream with an endemic fauna and low species richness. The ichthyofauna was sampled quarterly from September 2011 to July 2012, through the electrofishing technique. The stomach contents of 419 individuals belonging to seven species were analyzed by the volumetric method, and the ecomorphological traits of 30 specimens of each species were estimated. The main food items consumed were detritus, aquatic and terrestrial insects, and other aquatic invertebrates. We observed low levels of trophic niche breadth and diet overlap between most species. The PCA scores indicated the occurrence of three ecomorphotypes. PCA axis 1 segregated at one extreme, species with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Iguaçu River basin; Morphotypes; Niche overlap; Stream fishes.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100245

How does diet influence the reproductive seasonality of tropical freshwater fish?: A case study of a characin in a tropical mountain river
Provedor de dados: 83
Autores: Ballesteros,Tania M.; Torres-Mejia,Mauricio; Ramírez-Pinilla,Martha P.
Seasonal breeding of tropical freshwater fish may be synchronized with periods of high food consumption. We explored this hypothesis by studying the relationship between diet and reproductive activity of Creagrutus guanes (Teleostei, Characidae). Our results showed that C. guanes had a generalist and omnivorous diet dominated by aquatic insects (mainly Diptera larvae) and seeds. Creagrutus guanes did not show intersexual or ontogenetic variation in diet. Peaks of feeding activity during rainy months were not synchronized with breeding in dry months. Our results do not support the hypothesis that the reproductive season has to be synchronized with high food consumption. We discussed the hypothesis fat reserves may be an important factor for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Phenology; Characidae; Fat reserves; Breeding; Creagrutus guanes.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400019

Diet and food consumption of the pearl cichlid Geophagus brasiliensis (Teleostei: Cichlidae): relationships with gender and sexual maturity
Provedor de dados: 83
Autores: 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

Diet of Bryconops alburnoides and B. caudomaculatus (Osteichthyes: Characiformes) in the region affected by Balbina Hydroelectric Dam (Amazon drainage, Brazil)
Provedor de dados: 83
Autores: Silva,Cylene C. da; Ferreira,Efrem J. G.; Deus,Cláudia P. de.
The study of fish diet and its interaction with the environment provides important data on ecology and behavior, as fish face varying environmental and food availability conditions. The aim of the present study was to determine the diet of Bryconops caudomaculatus and Bryconops alburnoides, as well as to assess its seasonal variation, within the area influenced by Balbina Hydroelectric Dam (BHD), in the Uatumã River (Amazon Basin, Brazil). Collections were carried out every two months from April 2005 to February 2007, using gill nets with mesh sizes ranging from 12 to 60 mm between opposite knots. Two methods were used for determining diet: frequency of occurrence and relative volume, which were used to calculate the alimentary index (IAi). Diet similarity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Reservoir; Amazon; Environmental impact.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200011

Fish diet composition in permanent and semi-permanent pools in tropical wetlands of the Yucatan Peninsula
Provedor de dados: 83
Autores: Hinojosa-Garro,Demián; Arceo-Gómez,Joselito; Zambrano,Luis; Escalera-Vázquez,Luis H.
We compared fish diet composition between permanent (P) and semi-permanent (SP) pools in Petenes Biosphere Reserve (PBR), Campeche. A total of 445 gut contents were examined to determine stomach relative fullness (RF), fish diet as index of niche breadth (INB) and diet overlap. In SP pools, species showed a RF of 1.66 (57.20 % empty stomachs) whereas in P pools, the RF was 2.91 (31.16%). We classified fish diet into six trophic groups: detritivorous, herbivorous-detritivorous, insectivorous, piscivorous, omnivorous and malacophagous. Species in P pools were found to be specialist. Conversely, species present in both habitats shifted to generalist patterns. There was a 54.0% dissimilarity in fish diet composition between pools. From all items identified,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campeche; Feeding ecology; Freshwater fish; Mexico; Petenes Biosphere Reserve.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400881

Spatial distribution and diet of Cephalopholis fulva (Ephinephelidae) at Trindade Island, Brazil
Provedor de dados: 83
Autores: Coelho,Flavio do Nascimento; Pinheiro,Hudson Tercio; Santos,Robson Guimarães dos; Albuquerque,Cristiano Queiroz de; Martins,Agnaldo Silva.
In this study we analyze the population structure and diet of the coney Cephalopholis fulva at Trindade Island, Brazil, through direct observation with SCUBA diving in 11 reef sites around the Island, up to 50 m deep. Diet was based on 77 individuals collected with speargun. Mean population density and biomass were estimated at 29 individuals/100 m² and 13 kg/100 m², respectively. This species is regularly distributed along the costal environments of the Trindade Island, with no significant differences in densities and biomass detected among the different collection habitats (reef crest, reef slope, and reef plateau). However, significantly higher densities were observed micro-habitats with greater structural complexity, which may offer more shelter and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chelonia mydas; Coney; Feeding ecology; Grouper; Oceanic islands; Reef fish.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200013

Seasonal and spatial differences in feeding habits of the Neotropical otter Lontra longicaudis (Carnivora: Mustelidae) in a coastal catchment of southeastern Brazil
Provedor de dados: 103
Autores: Rheingantz,Marcelo L; Waldemarin,Helen F; Rodrigues,Lívia; Moulton,Timothy P.
The diet of the Neotropical otter Lontra longicaudis (Olfers, 1818) is one of the best known aspects of its biology throughout its distribution range. However, most dietary studies have been undertaken during short time periods, making it difficult to identify temporal patterns in the feeding behavior of the species. The present study aimed to describe the diet of L. longicaudis in the lower region of the Mambucaba Catchment, state of Rio de Janeiro, Brazil, during a three year period, based on analyses of spraints (feces). The results show fish as the main prey item (frequency of occurrence, FO = 85.78%), as already described in previous studies. Crustaceans were the second main prey (FO = 70.67%), occurring in the spraints during the whole year, however...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Diet; Feeding ecology; Lutrinae; Southeastern Brazil; Spraint analysis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000100006

Temporal variation on the diet of the South American Tern (Sterna hirundinacea, Charadriiformes: Laridae) on its wintering grounds
Provedor de dados: 97
Autores: ALFARO,MATILDE; MAUCO,LAURA; NORBIS,WALTER; LIMA,MAURICIO.
The diet of the South American Tern (Sterna hirundinacea) and its seasonal variation during the 2005 and 2006 non-reproductive seasons in the Uruguayan Atlantic coast was analyzed. Diet was assessed by the analysis of pellets collected in the Rocha lagoon sandbar, a major tern roosting area in Uruguay, aiming to analyze the hypothesis that terns feed mainly on the Argentine Anchovy (Engraulis anchoita) during the wintering period. A total of 844 pellets were collected, 442 in 2005 and 402 in 2006. Diet was composed of fish (88 %), insects (9 %) and crustaceans (3 %). The main fish species consumed was the Argentine Anchovy (77.7 %), followed by Marini's Anchovy (Anchoa marinii) (7.9 %) and the Striped Weakfish (Cynoscion guatucupa) (3.6 %). Insects and...
Tipo: Journal article
Palavras-chave: Feeding ecology; Migration; Temporal variation; Terns; Uruguay.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000300011

Alimentação e variação sazonal na freqüência de capturas de anuros em duas localidades do Brasil central
Provedor de dados: 104
Autores: Moreira,Glória; Barreto,Larissa.
The feeding ecology and the sazonal variation in capture frequencies of anurans in two localities of Central Brazil was studied. The anuran capture frequencies were analysed counting specimen numbers collected in pitfall traps during the dry and rainy seasons. Anurans were caught more frequently during the rainy season. The diet of adults Proceratophrys sp., Eleutherodactylus sp., Bufo paracnemis Lutz, 1925, and Physalaemus cuvieri Fitzinger, 1826 were studied through the analysis of individual stomach contents. Results showed that the type of diet varied among the species studied.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibia; Anura; Feeding ecology; Brazil; Savanna.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200002

Summer feeding ecology of Great Pampa-finches, Embernagra platensis at Laguna de Guaminí, Buenos Aires, Argentina
Provedor de dados: 42
Autores: Ferman,Laura M.; Montalti,Diego.
The aim of this study was to assemble data on the summer feeding ecology of the Great Pampa-finch, Embernagra platensis at the Laguna de Guaminí, Buenos Aires, Argentina, and to explore the differences related to the dietary patterns for each sex between winter and summer when possible. The stomach contents of 43 birds were analyzed. The animal fraction was composed of Hymenoptera (45.1%), Coleoptera (32.4%), Lepidoptera (6.0%), Araneae (5%) and Orthoptera (3.2%). The application of the index of relative importance (IRI) resulted in 1490.4 for Coleoptera, 428.5 for Hymenoptera and 162.5 for Lepidoptera caterpillars. The vegetal fraction consisted of Triticum aestivum (26.9%), Cyperaceous (25%), Poaceae (Gramineae) (19.3%) and Panicum sp. (11.2%). The IRI...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Embernagra platensis; Feeding ecology; Great Pampa-finch.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300014

Microhabitat use and diet of Anotosaura vanzolinia(Squamata: Gymnophthalmidae) in a Caatinga area, Brazil
Provedor de dados: 49
Autores: Oliveira,Bruno Halluan Soares de; Pessanha,André Luiz Machado.
This study aimed to analyze the microhabitat use and diet of the lizard Gymnophthalmidae Anotosaura vanzolinia (Dixon 1974) in the Complexo Aluízio Campos (7° 16′ 34″ S, 35° 53′ 7″ W), an area of the Caatinga in the Campina Grande, Paraíba. We studied a total of 12 transects by active searching during the daytime. In each sample, habitat and microhabitat types occupied by the specimen were categorized, together with solar incidence and soil type. For all individuals, morphometric measurements were performed, as well as dissection for stomach content analysis. We collected a total of 46 individuals, with a snout-vent length ranging between 19 and 45 mm, collected over all habitats, with prevalence in soil and earthy litter microhabitats near rocky outcrops....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fossorial lizards; Feeding ecology; Gymnophthalmid lizard; Foraging.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300193

Feeding ecology of the maned wolf, Chrysocyon brachyurus (Illiger, 1815) (Mammalia: Canidae), in the Ecological Station of Itirapina, São Paulo state, Brazil
Provedor de dados: 49
Autores: Bueno,Adriana de Arruda; Belentani,Sonia Cristina da Silva; Motta-Junior,José Carlos.
The feeding ecology of the maned wolf (Chrysocyon brachyurus) was studied from 1998 to 2002 in the Ecological Station of Itirapina, São Paulo State, southeastern Brazil, including estimates of prey number and biomass consumption. A total of 325 faecal samples was collected in the area. The species is omnivorous, with a broad diet including 68 species or morphospecies of fruits and animals. Armadillos (Dasypodidae), wolf's fruit (Solanum lycocarpum) and small mammals (mostly Clyomys bishopi) were the bulk of the diet, comprising 72.8 % of the total estimated biomass consumed (185,323.4 g). In terms of frequency of occurrence, on the other hand, only small mammals and other miscella-neous fruits yielded 43.4 % of the total occurrences (N = 1,054). Animal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chrysocyon brachyurus; Maned wolf; Savannah; Grassland; Feeding ecology; Diet; Brazil.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000200007

Food habits of snakes from the RPPN Feliciano Miguel Abdala, an Atlantic Forest fragment of southeastern Brazil
Provedor de dados: 49
Autores: Palmuti,Cesar Felipe de Souza; Cassimiro,José; Bertoluci,Jaime.
We present data on the diet of 15 species of snakes belonging to a community from Reserva Particular do Patrimônio Natural Feliciano Miguel Abdala, an Atlantic Forest fragment of Southeastern Brazil, based on their stomach contents. For 12 items we were able to determine the direction of the ingestion. Most snakes ingested the prey head-first. A cluster analysis was conducted with items grouped as chilopods, mollusks, adult anurans, anuran tadpoles, lizards, amphisbaenians, snakes, and rodents. The phylogenetic influence on diet preferences is discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Serpentes; Diet; Feeding ecology; Phylogenetic influence on diet; Atlantic Forest.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000100028

Variation in the diet of the lizard Tropidurus torquatus along its coastal range in Brazil
Provedor de dados: 49
Autores: Siqueira,Carla Costa; Kiefer,Mara Cíntia; Sluys,Monique Van; Rocha,Carlos Frederico Duarte.
The diet composition of lizards of a given species may vary among different populations. The feeding ecology of the tropidurid lizard Tropidurus torquatus was studied in 10 coastal areas in Brazil in order to detect to what extent the diet varies along its geographic range. A non-metric multidimensional scaling technique revealed three groups of localities according to the diet composition: one characterized by a relatively high consumption of Isoptera, one characterized by a relatively high proportion of plant matter, and one in which there was a great importance of Formicidae. We found a weak pattern of latitudinal differences in restingas regarding the general consumption of items by T. torquatus, probably because this is a generalist and opportunistic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geographic variation; Feeding ecology; Restinga habitat; Tropical lizard; Tropiduridae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300093

Use of carbon and nitrogen stable isotopes to study the feeding ecology of small coastal cetacean populations in southern Brazil
Provedor de dados: 49
Autores: Hardt,Fernando Augusto Sliva; Cremer,Marta Jussara; Tonello Junior,Antonio José; Bellante,Antonio; Buffa,Gaspare; Buscaino,Giuseppa; Mazzola,Salvatore; Barreto,André Silva; Martinelli,Luiz Antonio; Zuppi,Giovanni Maria.
Samples from individuals of the populations of Sotalia guianensis (Guiana) and Pontoporia blainvillei (Franciscana) dolphins living in the Babitonga Bay estuary (26° 28′ S/48° 50′ W), and samples from individuals of a second population of P. blainvillei from a nearshore area (26° 38′ S/48° 41′ W), were collected and analyzed along with their prey between 2000 and 2006, to determine the carbon and nitrogen stable isotope ratios and to verify differences in their feeding ecology. No differences were found in the median ð15N values of Guiana (15.2‰) and Franciscana (15.9‰) dolphins living in Babitonga Bay, nor of nearshore Franciscana (15.0‰) individuals, suggesting no variation in the trophic level of these populations. However, the lack of more information...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pontoporia blainvillei; Sotalia guianensis; Babitonga Bay; Feeding ecology; Trophic level.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400090

Diet and resource sharing by two Pimelodidae species in a Southeastern Brazilian reservoir
Provedor de dados: 49
Autores: Silva,Zoraia; Nascimento,Patrícia Elaine Cunha do; Vitule,Jean Ricardo Simões; Frehse,Fabrício de Andrade; Ferraz,Mayara Silva Oliveira; Mourgués-Schurter,Lea Rosa.
Abstract: Fish can vary their diet and feeding dynamics according to biotic and abiotic factors. There is insufficient knowledge regarding these factors in reservoirs, which limits the management of these areas. The aim of this study was to determine the diet of two related and most collected fish species, verify the influence of biotic and abiotic factors on their diet, and also verify the existence of resource sharing by them in an upstream Brazilian reservoir. Fish abundance in the reservoir was calculated and data were provided by 176 specimens of Iheringichthys labrosus (Lütken, 1874) and 255 specimens of Pimelodus maculatus Lacépède, 1803 collected in Camargos reservoir, MG, Brazil. Stomach contents were analysed through the frequency of occurrence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Iheringichthys labrosus; Pimelodus maculatus; Rio Grande Basin; Upstream reservoir.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300205

Geophagy in two parrot species in southern Pantanal, Brazil
Provedor de dados: 49
Autores: Severo-Neto,Francisco.
Geophagy is a habit recorded for parrots, which seek earthy or soil-like substances presumably to help them in digestive functions, whether mechanical or chemical ones. Few studies are devoted to this feeding peculiarity in the Pantanal region. Here are reported two events of geophagy, for the Blue-and-yellow Macaw (Ara ararauna) and the Nanday Parakeet (Aratinga nenday) in the Pantanal subregions of the Miranda-Abobral and Nhecolândia, Mato Grosso do Sul, respectively.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Geophagy; Pantanal; Psittacines; Parrots; Wetland; Feeding ecology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000200020

Size-related and seasonal changes in the diet of the non-native Cichla kelberi Kullander &amp;amp; Ferreira, 2006 in a lowland reservoir in the southeastern Brazil
Provedor de dados: 49
Autores: Mendonça,Helaine Silva; Santos,Alexandre Clistenes Alcântara; Martins,Mariana Marques; Araújo,Francisco Gerson.
Abstract: We examined size-related and seasonal changes in the diet of the peacock bass Cichla kelberi in a tropical lowland reservoir in southeastern Brazil over three hydro-climatic seasons: summer (high rainfall and temperature), winter (low rainfall and temperature), and late spring (increasing rainfall and temperature) during two years (2006-2007). The tested hypothesis is that this non-native predator fish changes diet during the subadult and adult phases and among seasons to adapt in new colonized environment. Fishes of the families Clupeidae (Platanichthys platana), Characidae (Astyanax spp.) and Cichlidae (Cichla kelberi) were the most important food items, followed by insects of the order Odonata. Cannibalism was also recorded for the largest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding ecology; Freshwater fishes; Non-native species; Piscivory; Impoundment.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300207

A comparison of foraging between the South American and Cabot's Tern in southern Brazil
Provedor de dados: 49
Autores: 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