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| Registros recuperados: 177 | |
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| Foucaud, J.; Jourdan, H.; Le Breton, J.; Loiseau, A.; Konghouleux, D.; Estoup, A.. |
| A unique reproductive system has previously been described in Wasmannia auropunctata, a widespread invasive ant species, where males are produced clonally, female queens are parthenogens, and female workers are produced sexually. However, these findings were mostly based on samples originating from only a limited part of the native range of the species in South America. We used microsatellite markers to uncover the reproductive modes displayed by a large number of nests collected in various invasive W. auropunctata populations introduced 40 years ago into New Caledonia, where the species now forms a single 450-km-long supercolony. Although the main reproduction system in New Caledonia remained clonality for both male and female reproductives, we found... |
| Tipo: Journal Article |
Palavras-chave: FOURMI; INSECTE SOCIAL; REPRODUCTION CLONALE; PARTHENOGENESE; DETERMINATION GENETIQUE CASTE DETERMINATION; INVASION; PARTHENOGENESIS; REPRODUCTION SYSTEM; NEW CALEDONIA. |
| Ano: 2006 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200833e0fbe8&uri=/notices/prodinra1/2008/08/ |
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| Foucaud, J.; Fournier, D.; Orivel, J.; Delabie, J.H.C.; Loiseau, A.; Le Breton, J.; Kergoat, G.; Estoup, A.. |
| Reproduction systems are controlling the creation of new genetic variants as well as how natural selection can operate on these variants. Therefore, they had historically been one of the main foci of evolutionary biology studies. The little fire ant, Wasmannia auropunctata, has been found to display an extraordinary reproduction system, in which both males and female queens are produced clonally. So far, native sexual populations of W. auropunctata have not been identified. Our goals were to identify such sexual populations and investigate the origins of female parthenogenesis and male clonality. Using mitochondrial DNA and microsatellite markers in 17 native populations, we found that traditional sexual populations occurred in W. auropunctata and are... |
| Tipo: Journal Article |
Palavras-chave: FOURMI; INSECTE SOCIAL; REPRODUC TION CLONALE; DETERMINISME GENETIQUE; SYSTEME REPRODUCTEUR REPRODUCTION SYSTEM; SEX; PARTHENOGENESIS; MALE CLONALITY. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008d70ef330&uri=/notices/prodinra1/2008/08/ |
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| Le Conte, Y.; ALAUX, C.; Martin, J.F.; Harbo, J.R.; Harris, J.W.; Dantec, C.; Séverac, D.; Cros-Arteil, S.; Navajas Navarro, M.. |
| Honeybees have evolved a social immunity consisting of the cooperation of individuals to decrease disease in the hive. We identified a set of genes involved in this social immunity by analysing the brain transcriptome of highly varroa-hygienic bees, who efficiently detect and remove brood infected with the Varroa destructor mite. The function of these candidate genes does not seem to support a higher olfactory sensitivity in hygienic bees, as previously hypothesized. However, comparing their genomic profile with those from other behaviours suggests a link with brood care and the highly varroa-hygienic Africanized honeybees. These results represent a firststep toward the identification of genes involved in social immunity and thus provide first insights... |
| Tipo: Journal Article |
Palavras-chave: PARASITE; INSECTE SOCIAL; IMMUNITE SOCIALE; COMPORTEMENT HYGIENIQUE; EXPRESSION GENIQUE HONEYBEE; SOCIAL IMMUNITY; HYGIENIC BEHAVIOUR; VARROA; GENE EXPRESSION. |
| Ano: 2011 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011f6e141fc&uri=/notices/prodinra1/2011/06/ |
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| Registros recuperados: 177 | |
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