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| Registros recuperados: 10 | |
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| Alves,Soraya Tatiana M.; Abrunhosa,Fernando A.; Lima,Jô de F.. |
| The gross morphology of foregut was investigated and described in detail for four freshwater crab species: a pseudothelphusid, Fredius reflexifrons (Ortmann, 1897) and three trichodactylids - Sylviocarcinus pictus (H. Milne-Edwards, 1853), Valdivia serrata White, 1847, and Dilocarcinus septemdentatus (Herbst, 1783). In general, the gastric mills of freshwater crabs showed a similar degree of complexity in relation to other marine species of Anomura and Brachyura previously described in the literature. However, significant morphological differences were observed among the analyzed species, as in ossicle numbers, features and connection types. A total of 38 ossicles were described for S. pictus and V. serrata and 37 ossicles for D. septemdentatus and F.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater crabs; Morphology; Stomach; Amazon region; Neotropic. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200011 |
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| Azevedo-Santos,Valter Monteiro de; Rigolin-Sá,Odila; Pelicice,Fernando Mayer. |
| Cage aquaculture has been developed in many countries, including Brazil. This form of production, although economically productive, may cause several impacts to the environment. Considering the historical relationship between aquaculture and species introduction, our study investigated the potential of cage aquaculture in spreading non-native species into hydroelectric reservoirs. We interviewed 19 fish farmers in Furnas Reservoir, Grande River basin. All producers have grown exclusively Nile tilapia (Oreochromis niloticus), an African fish, and all producers reported the occurrence of fish escapes. Releases were mainly accidental, but highly frequent during some management procedures, such as length classification, fish capture and juvenile stocking.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Escapes; Introduced fish; Management; Neotropic; Oreochromis niloticus; Tilapia. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400024 |
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| Coscarelli,Daniel; Montresor,Lângia C.; Russo,Philip; Melo,Alan Lane de; Vidigal,Teofânia H.D.A.. |
| Abstract Accurate distributional information is crucial for studies on systematics, biodiversity and conservation. To improve the knowledge regarding the geographical distribution of Omalonyx in South America, we present updated information based on data from a literature review, institutional collections and malacological surveys. All this information composed the dataset used to predict species distribution employing the Maximum Entropy Algorithm (MaxEnt). The model was run using data on species distribution, altitude and bioclimatic variables (WorldClim database). The model had consistent performance, and areas presenting similar conditions to areas where the species were recorded were considered areas of occurrence. The predicted occurrence areas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: MaxEnt; Niche model; Species distribution; Modeling; Succineids; Neotropic. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100209 |
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| Costa,Wilson J. E. M.. |
| Seven new species of the Rivulus punctatus group collected during recent field studies in central Brazil are described. Rivulus dapazi n. sp., from the upper rio Correntes drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal and caudal fins in males; R. cyanopterus n. sp., from the upper rio São Lourenço drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal fin in both sexes; R. rossoi n. sp., from the rio Inhanduí drainage, rio Paraná basin, is diagnosed by a unique color pattern of the caudal fin in males and a reduced number of gill rakers on the first branchial arch; R. litteratus n. sp., from the upper rio Araguaia basin, is diagnosed by unique color patterns of flank in males and caudal fin in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Systematics; Cerrado; Neotropic. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000100003 |
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| Registros recuperados: 10 | |
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