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| Lang, M.; Orgogozo, V.. |
| Left-right asymmetric genitalia have appeared multiple times independently in insects and have been associated with changes in mating positions. However, there is little experimental data on how the evolution of genital asymmetries may have affected the evolution of mating positions or vice versa. As opposed to its closely-related species, Drosophila pachea has a conspicuous asymmetry in its male genitalia external lobes, with the left lobe being 1.49 ± 0.08 (SD) times longer and thinner than the right lobe. In a laboratory stock, we found that 20% of the males possess fully symmetric lobes. To better understand how asymmetric genitalia may affect mating, we compared D. pachea copulation behaviour between these mutant males and wildtype males. We found... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Epandrial lobe; Epandrium; Left-right asymmetry; Mating behaviour; Mating position; Nannoptera subgroup; 42.24. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/419172 |
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| Lang, M.; Orgogozo, V.. |
| Left-right asymmetric genitalia have appeared multiple times independently in insects and have been associated with changes in mating positions. However, there is little experimental data on how the evolution of genital asymmetries may have affected the evolution of mating positions or vice versa. As opposed to its closely-related species, Drosophila pachea has a conspicuous asymmetry in its male genitalia external lobes, with the left lobe being 1.49 ± 0.08 (SD) times longer and thinner than the right lobe. In a laboratory stock, we found that 20% of the males possess fully symmetric lobes. To better understand how asymmetric genitalia may affect mating, we compared D. pachea copulation behaviour between these mutant males and wildtype males. We found... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Epandrial lobe; Epandrium; Left-right asymmetry; Mating behaviour; Mating position; Nannoptera subgroup; 42.24. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/607668 |
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| Sipman, Iris. |
| The tropical tree snails of the subgenus Amphidromus s.str. receive much attention from researchers because populations consist of roughly equal proportions of dextral and sinistral individuals. Studies indicate that this stable genetic antisymmetry is maintained because of disassortative mating. Deviations of the theoretically expected 50:50 proportion have, however, been frequently reported. An explanation for this deviation could be modulation by chirally biased predation. On the island of Kapas, Malaysia, seventeen individuals of Gecarcoidea lalandii, a nocturnal terrestrial crab, were caught and housed with live Amphidromus inversus. A low level of predation by the crab on the snails was found. However, there is no reason to assume that... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Amphidromus inversus; Gecarcoidea lalandii; Left-right asymmetry; Predation; Chiral proportions. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/588035 |
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