The Drosophilidae (Diptera) of the Scattered Islands, with the description of a novel association with<i>Leptadenia madagascariensis</i>Decne. (Apocynaceae)

Yassin, Amir; Gidaszewski, Nelly; Albert, Béatrice; Hivert, Jean; David, Jean R.; Orgogozo, Virginie; Debat, Vincent

doi:10.4161/fly.21583

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…In the dry season, when trophic resources (especially fruit) are less readily available in the northern Atlantic Forest (Buril et al, 2013), generalist species have greater survival success, which explains their dominance in this period. Drosophila malerkotliana, Z. indianus, S. latifasciaeformis and D. simulans are generalist species (Yassin et al, 2012), and the first three have larger populations during the dry period. These findings demonstrate that the seasonal pattern observed in this study is explained by differences in abundance between native and exotic species, indicating the adoption of adaptation strategies by these groups.…”

Section: Genusmentioning

confidence: 99%

Effects of seasonality on drosophilids (Insecta, Diptera) in the northern part of the Atlantic Forest, Brazil

Coutinho-Silva

Montes

Oliveira

et al. 2017

Bull. Entomol. Res.

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Seasonality is an important aspect associated with population dynamic and structure of tropical insect assemblages. This study evaluated the effects of seasonality on abundance, richness, diversity and composition of an insect group, drosophilids, including species native to the Neotropical region and exotic ones. Three preserved fragments of the northern Atlantic Forest were surveyed, where temperatures are above 20 °C throughout the year and rainfall regimes define two seasons (dry and rainy). As opposed to other studies about arthropods in tropical regions, we observed that abundance of drosophilids was significantly higher in the dry season, possibly due to biological aspects and the colonization strategy adopted by the exotic species in these environments. Contrarily to abundance, we did not observe a seasonal pattern for richness. As for other parts of the Atlantic Forest, the most representative Neotropical species (Drosophila willistoni, D. sturtevanti, D. paulistorum and D. prosaltans) were significantly more abundant in the rainy season. Among the most abundant exotic species, D. malerkotliana, Zaprionus indianus and Scaptodrosophila latifasciaeformis were more importantly represented the dry season, while D. simulans was more abundant in the rainy period. The seasonality patterns exhibited by the most abundant species were compared to findings published in other studies. Our results indicate that exotic species were significantly more abundant in the dry season, while native ones exhibited an opposite pattern.

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Section: Genusmentioning

confidence: 99%

Effects of seasonality on drosophilids (Insecta, Diptera) in the northern part of the Atlantic Forest, Brazil

Coutinho-Silva

Montes

Oliveira

et al. 2017

Bull. Entomol. Res.

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“…50 Consequently, the drosophilid fauna of Mayotte and neighboring islands is currently dominated by human-commensal species. 51,52 This would increase the chances of the introduction of mainland D. y. yakuba to the island, which may outcompete or abort the speciation process. On the other hand, noni itself is currently cultivated and exploited for its pharmaceutical benefits on the African mainland, 53 which may ultimately lead to other cases of specialization reminiscent to the 'parallel speciation' cases of sticklebacks 54 or Timema stick insects.…”

Section: Discussionmentioning

confidence: 99%

Drosophila yakuba mayottensis, a new model for the study of incipient ecological speciation

Yassin

2016

Fly

Self Cite

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A full understanding of how ecological factors drive the fixation of genetic changes during speciation is obscured by the lack of appropriate models with clear natural history and powerful genetic toolkits. In a recent study, we described an early stage of ecological speciation in a population of the generalist species Drosophila yakuba (melanogaster subgroup) on the island of Mayotte (Indian Ocean). On this island, flies are strongly associated with the toxic fruits of noni (Morinda citrifolia) and show a partial degree of pre-zygotic reproductive isolation. Here, I mine the nuclear and mitochondrial genomes and provide a full morphological description of this population. Only 29 nuclear sites (< 4 × 10 of the genome) are fixed in this population and absent from 3 mainland populations and the closest relative D. santomea, but no mitochondrial or morphological character distinguish Mayotte flies from the mainland. This result indicates that physiological and behavioral traits may evolve faster than morphology at the early stages of speciation. Based on these differences, the Mayotte population is designated as a new subspecies, Drosophila yakuba mayottensis subsp. nov., and its strong potential in understanding the genetics of speciation and plant-insect interactions is discussed.

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Floral scent and pollinators of Ceropegia trap flowers

Heiduk

Brake

Tschirnhaus

et al. 2017

Flora

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The Drosophilidae (Diptera) of the Scattered Islands, with the description of a novel association withLeptadenia madagascariensisDecne. (Apocynaceae)

Cited by 5 publications

References 11 publications

Effects of seasonality on drosophilids (Insecta, Diptera) in the northern part of the Atlantic Forest, Brazil

Effects of seasonality on drosophilids (Insecta, Diptera) in the northern part of the Atlantic Forest, Brazil

Drosophila yakuba mayottensis, a new model for the study of incipient ecological speciation

Floral scent and pollinators of Ceropegia trap flowers

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