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| Registros recuperados: 2,387 | |
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| Iniesta,Luiz F. M.; Bouzan,Rodrigo S.; Brescovit,Antonio D.. |
| ABSTRACT The South American genus Heteropyge Silvestri, 1897 is revised, accommodating now six accepted species. Adults of the poorly known species Heteropyge araguayensis (Schubart, 1947) are described for the first time from near-topotypic material collected near the Araguaia River, state of Mato Grosso, Brazil. In addition, based on recent samplings and on material from Schubart’s collection, H. bidens (Schubart, 1945) is removed from the synonymy of H. cayennophilus (Silvestri, 1897) and revalidated. Both species show significant differences concerning the gonopods and male leg-pair 1. New records and additional data for H. bidens and H. cayennophilus are provided, as well as an updated checklist of the species belonging to Heteropyge. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neotropical region; Spirostreptini; Mato Grosso; Brazil; Millipedes. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100232 |
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| Araujo,Renato Braz de; Garutti,Valdener. |
| The reproductive biology of Aspidoras fuscoguttatus Nijssen & Isbrücker, 1976 from a stream in São José do Rio Preto, northwestern São Paulo State, Brazil, was monthly investigated in the period of August 1999 to July 2000. Measurements of total length, body weight, gonadal weight and macroscopic assessment of gonadal maturation were performed. Environmental parameters were considered in order to verify associations with the reproductive period. Populational structure showed total length amplitude between 14.2 and 50.8 mm. Pronounced sexual dimorphism was verified. The largest mean values of gonadosomatic relation for females coincided with the rainy season (November to March). Mean length at first sexual maturity was different for males (30.5 mm)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biology; Aspidoras; Callichthyidae; Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000400011 |
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| Lima,J. Fernando de S.; Kasahara,Sanae. |
| The genus Calomys Waterhouse, 1837 is widely distributed within South America, being found in Venezuela, Colombia, Peru, Bolivia, Brazil, Paraguay, Uruguay and Argentina. Specimens of Calomys were collected in Formoso do Araguaia, Tocantins, Brazil. For chromosome characterization standard staining techniques and as G-banding and nucleolar organizer region were used. The karyotype was 2n=46 and AN=66. The X chromosome is a medium metacentric and the Y chromosome a small acrocentric chromosome. Chromosome homologies with other species were observed. Probably, karyotype differences were basically due to Robertsonian rearrangements. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calomys; Karyotype; Chromosome; Tocantins; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200019 |
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| Oniki,Yoshika; Antunes,Alexsander Z.; Willis,Edwin O.. |
| The hummingbird Amazilia lactea (Lesson, 1832) built a nest in São Paulo, Brazil, in the spring (Oct) and added lichens during incubation. The female incubated over 70 per cent of the day, 1-56 min per visit, and brooded two small young somewhat less; brooding stopped by about 10 days of age, as did night brooding. Lack of night brooding for large young hummingbirds may reflect lack of space in a small nest. Young stayed in the nest 19 days. Feedings were widely spaced, and presence of possible predators caused alarm. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazilia lactea; Nest; Behavior; Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200007 |
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| Redighieri,Elizandra S.; Azevedo,Celso O.. |
| Five new species of Dissomphalus Ashmead, 1893 are described and illustrated, all from Espírito Santo, Brazil: D. h-ramus, D. verrucosus, D. laminaris, D. cristatus and D. scopatus. New geographic records and variation data of D. scamatus Azevedo, 1999, D. concavatus Azevedo, 1999, D. rectilineus Azevedo, 1999, D. vallensis Evans, 1979, D. gilvipes Evans, 1979, D. plaumanni Evans, 1964, D. napo Evans, 1979, D. truncatus Azevedo, 2003 and D. cornutus Evans, 1964 are included. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bethylidae; Dissomphalus; Brazil; Espírito Santo; Systematics. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000300018 |
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| Mendonça, Jr.,Milton de S.; Romanowski,Helena P.. |
| Our understanding of the population ecology of insect gallers is largely built on examples from temperate zones, but tropical and subtropical gallers may present distinct patterns of abundance and distribution across time. Eugeniamyia dispar Maia, Mendonça & Romanowski, 1996 is a multivoltine Neotropical cecidomyiid that induces spongy leaf galls on Eugenia uniflora (Myrtaceae). Galls were censused in the urban area of Porto Alegre, southern Brazil on six plants at two sites, for two years, at roughly weekly intervals. Overall 9,694 eggs, galling attempts and galls were counted. New galls continuously appear on developing leaves, but galls with live inducers are absent from June to at least early August. Galls on a same shoot develop... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Eugenia uniflora; Gall-inducer; Myrtaceae; Population dynamics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000200009 |
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| Bizzo,Luís; Gottschalk,Marco S; Toni,Daniela C. De; Hofmann,Paulo R. P. |
| Drosophila Fallen, 1823 (Diptera, Drosophilidae) is for long a well-established model organism for genetics and evolutionary research. The ecology of these flies, however, has only recently been better studied. Recent papers show that Drosophila assemblies can be used as bioindicators of forested environment degradation. In this work the bioindicator potential of drosophilids was evaluated in a naturally opened environment, a coastal strand-forest (restinga). Data from nine consecutive seasonal collections revealed strong temporal fluctuation pattern of the majority of Drosophila species groups. Drosophila willistoni group was more abundant at autumns, whereas D. cardini and D. tripunctata groups were, respectively, expressive at winters and springs, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drosophila; Seasonality; Bioindicators; Restinga; Brazil. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300001 |
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| Grohmann,Priscila A.. |
| During six consecutive months, sampling were made at three points located on Governador Island and three on Paquetá Island in Guanabara Bay, Rio de Janeiro, Brazil. Material was collected from dock pilings and rocks in the intertidal zone. In these samples, five species belonging to three families, Corynidae, Kirchenpaueriidae and Campanulariidae, were identified. The campanulariid species Obelia dichotoma Linnaeus, 1758, dominated at nearly all points sampled. The small number of species obtained in this survey is attributed to the intense pollution in the bay, which borders the second-largest industrial complex and the second-largest demographic center of Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guanabara Bay; Rio de Janeiro; Brazil; Intertidal zone; Rocky shores. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212009000300010 |
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| Registros recuperados: 2,387 | |
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