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| TAPIA,CAROLA; PARRA,LEONARDO; PACHECO,BETANIA; PALMA,RUBÉN; GAJARDO,GONZALO; QUIROZ,ANDRÉS. |
| Two behavioral experiments were performed to test that A. franciscana shows specific courtship patterns, which in part, would be governed by semiochemicals released by females. The courtship ethogram, based on 30 adult virgin pairs (1 female v/s 1 male) individually video recorded for 1 hour, revealed that males display four independent activity patterns: 1) approach and touch, 2) swim behind, 3) riding attempt, and 4) riding success. The analysis of the transitions among the observed patterns suggested two ways to achieve riding success, both requiring female touch. In one, males approach and touch females followed by riding attempt (27% probability of occurrence), but if the latter fails, males start over from approach and touch (23% probability of... |
| Tipo: Journal article |
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| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382015000200005 |
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| GAJARDO,GONZALO; BEARDMORE,JOHN A. |
| During the fifties Brncic and the Dobzhansky's school, using the fruit fly Drosophila as a test organism, introduced the term integration of the genotype, or genetic coadaptation, which has had great impact on thinking in today's evolutionary biology. In this work we use the brine shrimp Artemia - in many respects a sort of aquatic Drosophila- as a model organism to evaluate the relationship between population structure, potential for divergence and the degree of morphological and/or genetic change. These aspects, tightly linked with the organization of the genotype, are important to understanding how recombination and adaptive release of genetic and phenotypic variation affect the speciation process in Artemia. Analysis of genetic (allozyme, diploid and... |
| Tipo: Journal article |
Palavras-chave: Artemia; Coadaptation genetic variability interpopulation differentiation aquatic Drosophila. |
| Ano: 2001 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000000012 |
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