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| Registros recuperados: 2.277 | |
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| Argel-de-Oliveira,Maria Martha; Curi,Nancy A; Passerini,Tatiana. |
| The observation of parents feeding a captive fledgling of Great Kiskadee revealed that visitation is more frequent in the first hour after sunrising, with lesscr peaks along the day. The diet supplied consisted mainly of insects (Hymenoptera, Lepidoptera, Coleoptera, Diptera), along with other items as human-made materiais (food scraps, pellets of animal food), lizards (Hemidactylus mabouia), non-identified fruit pulp, gastropods and arachnids (Opiliones). The ability that P. sulphuratus has for identifying food items absent froni more natural habitats and for exploiting resources of unpredictablc spatial and temporal distributions confers the species a dietary flexibility that probably contributes to its efficiency in colonizing urban habitats. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passeriformes; Tyrannidae; Pitangas sulphuratus; Diet; Urban environment. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000400027 |
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| Hahn,Norma Segatti; Almeida,Vera Lúcia Lescano de; Luz,Karla Danielle Gaspar da. |
| Hoplosternum Uttorale (Hancock, 1828) is an abundant species in the lagoons of the upper Paraná river floodplain. This species was sampled in Patos and Guaraná lagoons in the flood period (November/92-May/93) and low water period (June-October/93). To analyse food contents in the diet were analysed stomach of 91 adults. Twenty seven food items were recorded, among them, Testaceae, Nematoda, microcrustaceans, quironomids and organic detritus were predominant. These items allows to characterize the species as bentivore. To study feeding activity were analized 565 adults stomach contents. Food intake was more intense during flooding. Considering diel variation, the species started to eat during dusk, increasing during night, stopping to eat during daytime. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Siluriformes; Callichthyidae; Hoplosternum Uttorale; Feeding; Diel cycle; Lagoons. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100005 |
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| Melo,Cesar Enrique de; Röpke,Cristhiana Paula. |
| Os peixes da família Anostomidae, conhecidos popularmente como piaus, são restritos à América do Sul e representam importante fonte de renda para pescadores de muitas regiões. Estudos na Amazônia Central demonstram que estes peixes apresentam alta plasticidade alimentar e estão amplamente distribuídos pela região. Neste estudo, são analisadas nove espécies de Anostomidae e discutidas interações ecológicas relativas a sua alimentação e distribuição na Planície do Bananal, uma região de cerrado sujeita a inundações periódicas, drenada pela Bacia Araguaia/Tocantins. A amplitude de nicho alimentar foi baixa entre as seis espécies analisadas (0,125 e 0,355). Schizodon vittatum (Valencienes, 1894), a espécie com maior amplitude de nicho também é a mais... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecologia de peixes; Rio Araguaia; Cerrado; Nicho. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000100010 |
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| Moraes,Marcos F.P.G. de; Barbola,Ivana F; Guedes,Élica A.C. |
| Some aspects of the feeding habits and the morphology of the digestive tracts of Prochilodus lineatus (Osteichthyes, Prochilo-dontidae) are investigated in Lagoa Dourada, Ponta Grossa, Paraná. A total of 102 specimens were caprured between April 1993 and April 1994. From each specimen, the following measurements were determined: total and standard length, weight, sex, length of abdominal cavity. Histological and anatomical analyses were performed on the buccal cavity, pharynx, stomach, and intestine. P. lineatus is a ilyophagous species with short and numerous incisiform teeth attached to the lips and no pharyngeal teeth. The gill rakers are thick, oblique, and laminate. This species has a "U" - ceacal -type of muscular stomach, with well developed mucosal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osteichthyes; Prochilodus lineatus; Feeding habits; Digestive tract morphology. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100015 |
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| Furtado,Eurides. |
| Dados sobre os estágios imaturos, distribuição e plantas hospedeiras para um membro desta rara espécie de Saturniidae são apresentados pela primeira vez. Uma fêmea de Almeidaia aidae Mielke & Casagrande, 1981, o quinto exemplar conhecido desta espécie, foi coletado no alto rio Arinos, Diamantino, Mato Grosso, Brasil, e de seus ovos, larvas foram criadas com Pseudobombax longiflorum (Mart. et Zucc.) e Eriotheca gracilipes (K. Schum.) A. Rob. (Bombacaceae), duas espécies de árvores comuns na região dos cerrados do Brasil central. O desenvolvimento larval em 10 dias é extraordinariamente rápido, mas o período pupal pode demorar um ano ou mais. Os holótipos de Almeidaia romualdoi Travassos, 1937 e A. aidae são ilustrados a cores pela primeira vez;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bombacaceae; Brasil; Cerrado; Plantas hospedeiras; Biologia. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000300028 |
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| Masunari,Setuko; Dissenha,Nadia. |
| Um estudo do crescimento relativo da maior quela do macho e do abdome da fêmea foi realizado numa população do caranguejo chama-maré Uca mordax (Smith, 1870) ocorrente no extremo oeste da Baía de Guaratuba, Paraná, sul do Brasil. O comprimento da maior quela (CMQ) foi medido em 319 machos, e a largura do abdome (LAB) em 356 fêmeas. Adicionalmente, seis chama-marés sexualmente indiferenciados foram analisados. A largura da carapaça (LC) foi escolhida como dimensão de referência para ambos os sexos, a qual variou de 1,94 a 20,0 mm para machos, de 2,50 a 18,85 mm para fêmeas, e de 1,94 a 3,15 para os indivíduos sexualmente indiferenciados. A relação entre o LC e CMQ mostrou um ponto de inflexão em 11,70 mm LC nos machos, e entre LC e LAB, em 8,77 mm LC dentre... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crescimento relativo; Largura do abdome; Maior quela; Regrans. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000400026 |
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| Flores-Lopes,Fábio; Malabarba,Luiz R.; Pereira,Edson H.L.; Silva,José F. Pezzi da. |
| Little information is available about natural populations of fishes exposed to polluted waters in Brazil. Contaminants may be lethal or predispose fishes to sickness, being the analysis of aquatic organisms a good indicator of environmental quality. The violinha, Rineloricaria strigilata (Hensel, 1868), is a common loricariid catfish in the Guaíba lake basin, Rio Grande do Sul, Brazil, and has been selected as a bioindicator for being resident, occurring in more than 50% of the samples, and by showing externally detectable neoplasies. These are characterized by its dark pigmentation, bony plates hypertrophy, and hypertrophy and irregular arrangement of the odontodes. Histology showed hypertrophied epitelial tissues, with an increased number of secretory... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rineloricaria strigilata; Bioindicator; Neoplasm. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300006 |
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| Torres,Vladimir Stolzenberg. |
| A second study of the testate amoebae of the region of Porto Alegre, Rio Grande do Sul revealed the presence of Arcella Ehrenberg, 1830.Difflugia Leclerc, 1815, Lesquereusia Schulumberger, 1845, Centropyxis Stein, 1857, Bulinularia Penard, 1911 and Euglypha Dujardin, 1841 genera. Our finds demand emendations of the diagnostic characteristics of several species. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protista; Rhizopoda; Systematics; Testacean-amoebae. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200016 |
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| Becker,Miriam; Frieiro Costa,Fernando Antonio. |
| Randomly sampled oothecae of a natural population of Gratiana spadicea from the outskirts of Porto Alegre, RS, were dissected. The overlapping of the egg membranes makes possible to enumerate the eggs in a batch and therefore to relate mortality to position in the ootheca. The ootheca of this cassid provides a spatial refuge for some of its eggs. Successful eggs of G. spadicea amounted to less than one fifth of the total in each batch. Parasitoids and predators were responsible for a high mortality of eggs whatever the size of the ootheca. The main cause of mortality was the eulophid wasp Emersonella ooecia De Santis, 1983. A large proportion of eggs were sucked dry by the mirid Tupiocoris cincticornis (Stal, 1860). The sucked eggs could have contained... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1987 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751987000300003 |
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| Quadros,Aline F.; Araujo,Paula B.. |
| We present an assemblage of terrestrial isopods in Parque Estadual de Itapuã, southern Brazil, and estimate the contribution of two species to the leaf litter processing. After one year of sampling, we obtained 3748 individuals of six species and four eco-morphologic groups (in order of abundance): Balloniscus glaber Araujo & Zardo, 1995, Atlantoscia floridana (van Name, 1940), Pseudodiploexochus tabularis (Giambiagi de Calabrese, 1939), Trichorhina sp., Alboscia itapuensis Araujo & Quadros, 2005 and Novamundoniscus gracilis Lopes & Araujo, 2003. Total monthly density corresponded to 368 individuals per square meter. The species A. itapuensis and N. gracilis represented less than 1% of total individuals. All the others showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aggregation; Eco-morphological groups; Feeding rates; Isopoda; Species association. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000100009 |
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| Lamas,Carlos José Einicker; Couri,Márcia Souto. |
| A cladistic analysis of Euprepina Hull, 1971 (Diptera, Bombyliidae, Bombyliinae), a Neotropical genus that includes ten species, was made. The cladogram was obtained from eight studied species, based on a data matrix with 21 characters, using the program Hennig86. Character states were polarized following outgroup analysis, and an hypothetical ancestor was included in the analysis in order to root the tree. The options used, "ie*" and "xs w", resulted in four most parsimonious trees with ci = 79, ri = 80 and length 115. The monophiletism of Euprepina was supported by two synapomorphies. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diptera; Euprepina; Bombyliidae; Bombyliinae; Cladistic analysis. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000600002 |
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| Registros recuperados: 2.277 | |
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