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| Poeser, F.N.; Kempkes, M.; Isbrücker, I.J.H.. |
| The taxonomy of the common guppy, Poecilia reticulata Peters, 1859, is reviewed and the closely related Campoma guppy, P. wingei n. sp., is described. Formerly, the common guppy was not judged to be closely related to any other species of Poecilia, but the new species is the second species to be allocated in the subgenus Acanthophacelus Eigenmann, 1907. The recognition of P. wingei results from observed character displacement, i.e., on the interaction between two closely related species in a shared environment. In addition to differences in coloration, behaviour also indicates specific differences. The area in which P. wingei occurs, the Campoma region at the base of the Paría Peninsula in Venezuela, hints to an origin of the subgenus Acanthophacelus prior... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Guppies; Poecilia reticulata; P. wingei; Melanophore patterns; Character displacement; Paría Peninsula; Despeciation; 42.81. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/214343 |
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| NESPOLO,ROBERTO F. |
| Evolutionary biology is experiencing an exceptional process of revisión and outreach because of the 200-anniversary if the birth of Charles Darwin. As a consequence, the study of organic evolution and also its teaching are being discussed at several levels, by evolutionary biologists, biologists and scholars outside evolutionary biology and by the general public. In this scenario, a didactic explanation of how biologists address evolutionary research in real populations seems to be useful. Using actual research examples, here I tried to outline how the classic theory (termed here as the "basic scheme") is useful to answer relevant questions in biology and how a less dogmatic paradigm (or a more versatile one) would be needed when dealing with the most... |
| Tipo: Journal article |
Palavras-chave: Character displacement; Microevolution; Modern synthesis; Natural selection; Population genetics. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000400003 |
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