Consulta: subjectFacets:"Feeding habit"
Registros recuperados: 10
Data/hora: 12/06/2024 14:47:49

Trophic ecology of Lontra longicaudis (Carnivora, Mustelidae) in lotic and semilotic environments in southeastern Brazil
Provedor de dados: 76
Autores: Santos,Lívia B.; Reis,Nelio R. dos; Orsi,Mário L.
Lontra longicaudis (Olfers, 1818) (Carnivora, Mustelidae) is a semi-aquatic animal spread through the Central and South America, except in Chile. The implantation of a hydroelectric power plant along a river alters the dynamics of the watercourse, transforming a lotic environment into a lentic or semilotic one, what can damage the otter's feeding. From April 2008 to March 2009 we analysed the otter's food habits in lotic (streamlet) and semilotic (hydroelectric reservoir) environments of Paranapanema Valley, in southeastern Brazil. Aiming to compare the otter's diet of these two environments, we analyzed statistically the frequency of occurrence of main items in the scats. Fishes represent the base of the diet both in the reservoir and in the streamlet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical otter; Feeding habit; Natural environment; Changed environment.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000300003

Diet of the ichthyofauna associated with marginal vegetation of a mangrove forest in southeastern Brazil
Provedor de dados: 76
Autores: Corrêa,Michéle de O. D. A.; Uieda,Virgínia S.
The objective of this study was to analyze the diet of fish species that use the mangrove vegetation for shelter and feeding in a river southeastern Brazil. The fieldwork, including collecting and underwater observations, was carried out in the dry (July and August 2004) and in the rainy season (February and March 2005) in order to assess the existence of seasonal variation in the diets. Seven kinds of food items were consumed, two of plant origin and five of animal origin. Crustaceans predominated in the diet of most species, either in the form of unidentified fragments or discriminated in eight groups. The predominance of species using mainly a single food source (crustaceans, principally Ostracoda and Tanaidacea) and the existence of seasonal variation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding habit; Seasonal variation; Ontogenetic variation; Niche breadth.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000400020

Trophic ecology and the use of shelters and latrines by the Neotropical otter (Lontra longicaudis) in the Taquari Valley, Southern Brazil
Provedor de dados: 76
Autores: Kasper,Carlos Benhur; Bastazini,Vinicius Augusto G.; Salvi,Juliana; Grillo,Hamilton Cézar Z.
This manuscript presents information about the ecology of Lontra longicaudis (Olfers, 1818) in the Taquari Valley, State of Rio Grande do Sul, southern Brazil. The study was carried out in two areas located in the Forquetinha Creek and in the Forqueta River from January to December 2003. The otters are specialist feeders (Bsta = 0.24), with a diet based mostly on fish, especially those of the families Loricariidae and Cichlidae. Most shelters used by the species were excavated burrows underneath tree roots, while shelters within rocks were used less frequently. The burrows showed great variation in size, being found on average 3.5 m (sd = 3.6 m) away from the margin and 2.5 m (sd = 1.2 m) above the water level. Scent marks were made preferentially on rocks...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical otter; Feeding habit; Scent marking; Resting sites; Brazil.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000400009

Feeding habits of mosquitoes (Diptera: Culicidae) in an area of sylvatic transmission of yellow fever in the state of São Paulo, Brazil
Provedor de dados: 80
Autores: Mucci,Luis Filipe; Cardoso Júnior,Rubens Pinto; Paula,Marcia Bicudo de; Scandar,Sirle Abdo Salloum; Pacchioni,Márcio Lunardeli; Fernandes,Aristides; Consales,Cleide Aschenbrenner.
AbstractBackground The reintroduction of sylvatic yellow fever in the state of São Paulo after about six decades was confirmed in the Northwestern region in 2000, where in 2008 there also occurred an important epizootic. The purpose of this study was to investigate the feeding habits of culicids potentially involved in the sylvatic transmission of the virus in this region.Methods Specimens were collected in 24 forested localities at ground level with hand nets and mouth aspirators. Collections were made quarterly between October 2006 and July 2008 during daylight hours. Blood-meal identification was carried out in mosquitoes of the tribes Aedini, Mansoniini and Sabethini. The biotin/avidin sandwich ELISA was employed to determine six source types: bird,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding habit; Sylvatic yellow fever; Neotropical mosquitoes; Non-human primate; Forest fragmentation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100316

Termites in sugar cane in Northeast Brazil: ecological aspects and pest status
Provedor de dados: 82
Autores: Miranda,Carmélia S.; Vasconcellos,Alexandre; Bandeira,Adelmar G.
The spatial distribution, abundance, and feeding habits of termites in a sugar cane plantation in Northeast Brazil were studied, and based on these ecological parameters, the pest status of the species was evaluated. Four species were found: Amitermes nordestinus Mélo &amp;amp; Fontes, Cylindrotermes nordenskioeldi Holmgren, Nasutitermes coxipoensis (Holmgren) and Syntermes nanus Constantino, which we reported by the first time in association to sugar cane. The abundance and spatial distribution (vertical and horizontal) of the termites were influenced mainly by the plant root biomass and soil organic matter. C. nordenskioeldi is harmful to sugar cane, A. nordestinus is a potential pest, while N. coxipoensis and S. nanus are not potential pests. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isoptera; Species richness; Abundance; Spatial distribution; Feeding habit.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000200015

Collembolan community in broad-leaved forests and in conifer stands of Cryptomeria japonica in Central Japan
Provedor de dados: 86
Autores: Hasegawa,Motohiro; Fukuyama,Kenji; Makino,Shun'ichi; Okochi,Isamu; Tanaka,Hiroshi; Okabe,Kimiko; Goto,Hideaki; Mizoguchi,Takeo; Sakata,Tadashi.
Collembolan communities in conifer plantations (Japanese cedar, Cryptomeria japonica) and secondary deciduous broad-leaved forests of varying ages were investigated to determine the extent to which forest conversion (broad-leaved to coniferous) affects the species richness and assemblage composition of Collembola in central Japan. Density and total species richness of Collembola not differed between the broad-leaved and cedar forests except immediately after clear-cutting. The amount of forest-floor organic matter was larger in cedar forests and positively correlated with the species richness of detritus feeders. Species richness of fungal feeders and sucking feeders positively correlated with the species richness of forest-floor plants. There was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Japanese cedar; Species composition; Feeding habit; Undergrowth.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800012

Phytophagy on eucalyptus plants increases the development and reproduction of the predator Podisus nigrispinus (Hemiptera: Pentatomidae) - doi: 10.4025/actasciagron.v33i2.6152
Provedor de dados: 1
Autores: Holtz, Anderson Mathias; Escola Agrotécnica Federal de Colatina; Almeida, Gustavo Dias de; Universidade Federal de Viçosa; Fadini, Marcos Antonio Matiello; Empresa de Pesquisa Agropecuária do Estado de Minas Gerais; Zanuncio, José Cola; Universidade Federal de Viçosa; Zanuncio Júnior, José Salazar; Universidade Federal de Viçosa; Andrade, Gilberto Santos; Universidade Federal de Viçosa.
The effect of plant feeding on biological aspects of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) was evaluated. Nymphs and adults of this predator were fed with Tenebrio molitor L. (Coleoptera: Tenebrionidae) pupae on Eucalyptus urophylla plants in the field or only with pupae of this prey in the laboratory. The development and nymphal survival, as well as the pre-oviposition period, number of egg masses, number, fertility and viability of eggs and the longevity of females of this predator were evaluated. The eucalyptus plants improved the development of P. nigrispinus. This demonstrates that this predator can present higher population growth with eucalyptus plants and T. molitor pupae than in the laboratory (controlled conditions) only with...
Palavras-chave: 5.00.00.00-4 Podisus nigrispinus; Biological control; Feeding habit; Vegetable supplement; Predator 5.01.02.02-8 Podisus nigrispinus; Biological control; Feeding habit; Vegetable supplement; Predator.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6152

Aspectos da reprodução e alimentação de Neoplecostomus microps (Loricariidae, Neoplecostominae) na microbacia do Ribeirão Grande, serra da Mantiqueira oriental (Estado de São Paulo) - DOI: 10.4025/actascibiolsci.v30i4.301
Provedor de dados: 3
Autores: Braga, Francisco Manoel de Souza; Unesp/Rio Claro; Gomiero, Leandro Muller; UNESP/Rio Claro; Souza, Ursulla Pereira; UNESP/Rio Claro.
A microbacia do Ribeirão Grande situa-se nas vertentes da serra da Mantiqueira e está circundada pela floresta Atlântica. Foram amostrados oito locais na microbacia do Ribeirão Grande, no inverno (julho de 2001), primavera (outubro de 2001), verão (fevereiro de 2002) e outono (abril de 2002). As amostras foram coletadas com um aparelho elétrico de pesca. A maturação das gônadas, os graus de repleção do estômago e de gordura visceral foram distribuídas em um ciclo anual. Neoplecostomus micropstem período de desova que vai da primavera ao verão. O tamanho da primeira maturação gonadal para machos foi de 5,9 cm de comprimento total e de 6,9 cm para as fêmeas. O alto valor em outubro e fevereiro para a relação gonadossomática e para o fator de condição...
Palavras-chave: 2.04.00.00-4    Zoologia Neoplecostomus microps; Reprodução; Alimentação; Ecologia de riacho Neoplecostomus microps; Life cycle; Feeding habit; Stream ecology.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/301

Feeding habits of Stellifer rastrifer (Perciformes, Sciaenidae) at Guaratuba mangrove, Parana, Brazil
Provedor de dados: 52
Autores: Chaves,Paulo de Tarso C.; Vendel,Ana Lúcia.
Feeding habits of Stellifer rastrifer (Perciformes, Sciaenidae) at Guaratuba mangrove, Parana, Brazil, were studied from February 1996 to February 1997. It was observed that its diet was based on invertebrates, mainly Decapoda non-Brachyura and Polychaeta. In a smaller proportion there were plants, Copepoda, Gammaridea and Mollusca. The level of contribution of each food item changed according to the season and the individual size. Such plasticity in feeding behaviour was similar to that described to some fish populations from other estuaries, and could be an indicator of the high level of instability presented by this kind of ecosystem.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding habit; Stellifer rastrifer; Sciaenidae; Mangrove; Guaratuba; Parana.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000400006

Feeding ecology of stream-dwelling fishes from a coastal stream in the Southeast of Brazil
Provedor de dados: 52
Autores: Mazzoni,Rosana; Costa,Leandro Damião Soares da.
The relationship between ontogenetic variation of intestine length and feeding habits of five stream-dwelling fish species from the Ubatiba River were investigated. Analysed data were based on two size categories (juveniles and adults) and two food categories (animal and vegetal). Diet composition of each size category revealed that Astyanax janeiroensis and Geophagus brasiliensis changed food preference throughout ontogeny and switched from omnivorous/carnivorous to omnivorous/herbivorous and from omnivorous/carnivorous to omnivorous, respectively. These changes were followed by ontogenetic changes in the Intestinal Coefficient (IC). No ontogenetic differences were registered for IC and food categories consumed by Hoplias malabaricus but significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Coastal stream; Feeding habit; Intestinal coefficient.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000400008