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| Registros recuperados: 2.277 | |
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| Magalhães,André L. B. de; Ratton,Thiago F.. |
| The reproductive biology of the introduced pumpkinseed sunfish Lepomis gibbosus (Linnaeus, 1758) in the Custódio's Dam, rio Doce high basin, state of Minas Gerais, Brazil was studied from February/2001 to March/2002 and compared with introduced and native populations. Reproduction occurred almost along the entire period of study with a high frequency of fishes in the advanced ripening/mature and spawned/spent stages. The microscopic analyses indicated that the pumpkinseed sunfish presents multiple spawning. The egg diameter of the Brazilian population is similar to the Spanish, Greek and American ones. The standard length at maturity and the gonadosomatic index of the introduced populations are smaller when compared with native ones. The spawning season of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Dam; Exotic species; Rio Doce; Spawning. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000200025 |
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| Pompeu,Paulo dos Santos; Godinho,Alexandre Lima. |
| Two piscivorous fishes, peacock bass (Cichla monoculus Spix & Agassiz, 1831) (Perciformes) and piranha (Pygocentrus nattereri Kner, 1860) (Characiformes), were introduced in some Rio Doce valley lakes (19º50'S, 42º40'W) for sport fisheries enhancement. As a consequence, small individuals and species were practically vanished in the host lakes. In this study, the effects of peacock bass and piranha introductions on the diet of a native piscivorous fish, the trahira - Hoplias malabaricus (Bloch, 1794) are presented. Trahira's diet from three lakes were was compared with the stomach contentsdiet of trahira's living in another between three lakes with and three withoutstocked with the piscivorous species peacock bass and piranha. In the lakes with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichla; Pygocentrus; Hoplias malabaricus; Diet; Species introduction. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400016 |
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| Leal-Zanchet,Ana Maria; Thomé,José Willibaldo; Hauser,Josef. |
| The digestive gland of Phyllocaulis soleiformis is a compound tubular gland. The secretory tubules are made up of two main cell types: the digestive cells and calcic cells. The digestive cells are the most numerous, usually columnar, and exhibit three different functional stages: absorptive, secretory and excretory. These cells contain two cytoplasmic granules types and, in the excretory stage, most of the cell is occupied by a large vacuole. The calcic cells occursingly or frequently in groups of two or three, are triangular shaped and have distinct apical granules, and yet calcic histochemical detected granules. In addition, there is a third cell type, without characteristic cytoplasmic granules and which correspond to the undifferentiated cells. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mollusca; Gastropoda; Veronicellidae; Phyllocaulis soleiformis. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000200013 |
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| Lima,Isaac Passos de; Reis,Nélio Roberto dos. |
| A study about the species of Piperaceae that are consumed by a colony of Carollia perspicillata (Linnaeus, 1758) in Parque Municipal Arthur Thomas (82,72 ha) was carried out. Five available species of Piperaceae were found in the park: Piper aduncum Linnaeus, Piper amalago (Jacq.) Yuncker, Piper crassinervium H.B.K., Piper gaudichaudianum Kunth and Piper sp. C. perspicillata fed on all of these species. During the spring, the most abundant item was P. amalago, but the consumption of P. aduncum was the highest. At the beginning of the summer, P. crassinervium was the most abundant and most consumed item. At the end of the summer and during the fall, P. gaudichaudianum was the most abundant and consumed item, even in May, when P. amalago was the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bats; Frugivory; Piper; Plant-animal interaction; Seed dispersion. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000200035 |
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| Melo,Gabriel A. R.; Gonçalves,Rodrigo B.. |
| A higher-level classification of bees, in which the entire group is treated as a single family - the Apidae - is advocated here. A total of seven subfamilies, 51 tribes and 27 subtribes are recognized. These subfamilies correspond to the families adopted in the traditional classification. Although the proposed changes do not involve any major rearrangement, basically only changing the rank given to the main groups, the new system makes the classification of bees more consistent with that adopted for other major groups of aculeate Hymenoptera. It also departs from the 19th century practice, perpetuated in the traditional classification, of giving family-status to the main groups of bees. A correspondence table associating the taxon names used in the current... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aculeata; Family-group names; Bees; Apoid wasps. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000100017 |
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| Coelho,Petrônio Alves; Torres,Maria Fernanda A.. |
| Proper site selection is fundamental in the success of any aquiculture enterprise. To identify suitable areas for freshwater prawn culture in Pernambuco, factors like elevation, relief, soil and climate were considered, in accordance with the species biology and pond construction. According to the established criteria, suitable, unsuitable and unfavorable areas, with some restrictions, were recognized. Suitable areas for freshwater prawn culture in Pernambuco are about 835 km², representing 0.85% of the total area of the State. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1982 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751982000300003 |
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| Melo,Gabriel A. R.; Faria Jr,Luiz R. R.; Marchi,Paola; Carvalho,Claudio J. B. de. |
| Here we report for the first time data on parasitism of two species of Euglossa, E. intersecta Latreille, 1838 and E. anodorhynchi Nemésio, 2006, by conopid flies of the genus Physocephala Schiner, 1861. A parasitized adult male of E. intersecta was collected in Acre, northwestern Brazil,while parasitized adult females of E. anodorhynchi were obtained from trap-nests in São Paulo, southeastern Brazil. For both host species, the parasite-host association was confirmed by rearing the flies from parasitized adult bees. E. anodorhynchi was attacked by Physocephala bipunctata (Macquart, 1843) and E. intersecta by an unidentified species of Physocephala Schiner, 1861. Although our current knowledge is still incipient, parasitism by conopid flies can be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apinae; Euglossini; Eulaema; Neotropical; Thick-headed flies. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000300028 |
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| Sabagh,Leandro T.; Carvalho-e-Silva,Ana M. P. T.. |
| A clear understanding of the relationships between overlapping, similarity, and competition is necessary to understand many of the questions about the structure and operation of a community. Rhinella icterica (Spix, 1824) and Rhinella crucifer (Wied Neuwied, 1821) are sympatric species of toads occurring in the National Park of Serra dos Órgãos in southeastern Brazil. The aim of the present study was to assess the dietary overlap of these two species. Ninety-four stomachs were analyzed, and 2245 prey items were found. Common prey were Hymenoptera, Coleoptera, Diptera, Lepidoptera larvae, Blattaria, Orthoptera, Hemiptera, Opiliones, and Aranaea. Ants were the most important prey in both diets, followed by beetles and cockroaches. The niche breadth of R.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphibia; Diet; Rhinella crucifer; Rhinella icterica. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000200013 |
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| Registros recuperados: 2.277 | |
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