Long-Distance Migration of Drosophila

Coyne, Jerry A.; Boussy, Ian A.; Prout, Timothy; Bryant, Stephen H.; Jones, Jeffrey M.; Moore, John A.

doi:10.1086/283936

Cited by 142 publications

(106 citation statements)

References 0 publications

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…Coyne et a!., 1982). The locally linear distribution of this intertidal species made it possible to sample greater distances than has been done in similar studies of land snails, and the distribution in Fig.…”

Section: Discussionmentioning

confidence: 96%

Neighbourhood size and the importance of barriers to gene flow in an intertidal snail

Johnson

1995

Heredity

View full text Add to dashboard Cite

The littorine gastropod Bembicium vittatum has direct development from benthic egg masses, and shows high levels of genetic subdivision in the Houtman Abrolhos Islands, Western Australia.Parallel studies of dispersal and the scale of variation of allozyme frequencies were used to estimate the extent of the neighbourhood, the area of complete genetic mixing. Estimates based on the variance of dispersal distances were 58 to 69 m, very similar to the estimate of 62 m from the median dispersal distance. The allozymes indicated mixing over greater distances, up to 150 to 300 m. Combined with estimates of population density at two sites, these values suggest neighbourhood sizes of 990 to 37200 adults. However, estimation of effective population size based on a model of isolation by distance gave very low values of 22 to 38, raising doubts about the applicability of this method. Nevertheless, there was an overall pattern of isolation by distance along about 11 km of nearly continuous suitable habitat, with smooth clinal variation in allelic frequencies over distances of 2 to 6 km at individual loci. In contrast, there was no pattern of isolation by distance, and allelic frequencies showed less smooth patterns, along a discontinuous series of islands over the same distance. Within this discontinuous series, genetic subdivision, as measured by GST, was twice as large at distances of 1 km as for populations on continuous shores, demonstrating the importance of even relatively short water gaps as barriers to gene flow in this directly developing intertidal species.

show abstract

Section: Discussionmentioning

confidence: 96%

Neighbourhood size and the importance of barriers to gene flow in an intertidal snail

Johnson

1995

Heredity

View full text Add to dashboard Cite

show abstract

“…They may represent, more possibly, migrants from the adjacent areas. Studies on drosophilid dispersion, as those of COYNE et al (1982COYNE et al ( , 1987, showed that flies can disperse randomly, even leaving favourable areas to reach desolate ones many kilometres away. If a similar process is operating here, it could explain the presence of drosophilids in the mangroves even with the absence of breeding resources.…”

Section: P=0806) E Varmentioning

confidence: 99%

Assemblages of drosophilids (Diptera, Drosophilidae) in mangrove forests: community ecology and species diversity

Schmitz

Hofmann

Valente

2010

Iheringia, Sér. Zool.

View full text Add to dashboard Cite

ABSTRACT. Brazilian fauna of drosophilids has been researched in various ecosystems, but those in mangrove forests remain overlooked in Brazil and elsewhere. The present study attempts to characterise the assemblages of drosophilids of this environment, based on 28 collections taken in three mangrove areas in Santa Catarina Island, southern Brazil. The three mangroves surveyed were different in their surroundings, which varied from highly urbanised areas to conservation areas with natural vegetation. Overall, 69 species were collected, and no remarkable difference was detected in species composition and abundances or in the richness, evenness and heterogeneity between sites. The species abundance distribution observed fitted to a theoretical lognormal distribution in the three mangroves. The species richness scored and the performance of the species richness estimators showed an unexpectedly high diversity, considering the very low floristic diversity and the harsh conditions of the environment. Regarding species composition and abundances, the drosophilid mangrove assemblages were shown to be more similar to those found in open environments, with a marked dominance of exotic species. Finally, considering the apparent lack of feeding and breeding sites, we suggest that mangrove forests are acting as sink habitats for the drosophilids populations.KEYWORDS. Biodiversity, diversity measures, Drosophila, Neotropical region, source-sink hypothesis.RESUMO. Assembléias de drosofilídeos (Diptera, Drosophilidae) em manguezais: ecologia de comunidades e diversidade de espécies. A fauna brasileira de drosofilídeos tem sido estudada em vários ecossistemas, mas os manguezais têm sido negligenciados a esse respeito no Brasil e em todo o mundo. O presente estudo traz uma caracterização das assembléias de drosofilídeos neste ambiente, baseando-se em 28 coletas realizadas em três áreas de manguezais na ilha de Santa Catarina, sul do Brasil. Os três manguezais estudados apresentam diferenças marcantes quanto aos ambientes que os cercam, desde regiões altamente urbanizadas até áreas de proteção ambiental com vegetação natural. Ao todo, 69 espécies foram coletadas, e nenhuma diferença marcante foi detectada na composição e abundância das espécies, bem como na riqueza, equitabilidade e heterogeneidade entre os locais. A distribuição de abundância de espécies encontrada ajustou-se a uma distribuição teórica lognormal nos três manguezais. A riqueza de espécies observada e o desempenho de estimadores de riqueza de espécies mostraram uma inesperada alta diversidade, considerando a baixa diversidade florística e as condições hostis do ambiente. A respeito da composição e abundância de espécies, as assembléias de drosofilídeos dos manguezais mostraram-se mais similares àquelas encontradas em ambientes relativamente mais abertos, com grande dominância de espécies exóticas. Finalmente, considerando-se a aparente escassez de sítios de alimentação e oviposição do ambiente, sugere-se que os manguezais estejam agindo como "sink habitats" para a...

show abstract

“…Adult Diptera move freely and search out high-quality (i.e., larger) fruiting bodies at smaller than the within-plot scale (20-30 m), although they rarely move between plots. There are a number of reports of long distance migrations by Diptera (Coyne et al, 1982;Coyne & Milstead, 1987;Kimura, 1992;Kimura & Beppu, 1993) but the frequency of long distance migration and its importance in habitat selection at larger spatial scales are unknown.…”

mentioning

confidence: 99%

Abundance of mycophagous arthropods present on different species of fungi in relation to resource abundance at different spatial scales

Takahashi¹,

Tuno²,

Kagaya³

2005

Eur. J. Entomol.

View full text Add to dashboard Cite

Abstract. The abundance of Coleoptera, Diptera and Collembola on different species of fungi was investigated in relation to the size and abundance of fungal resources at different spatial scales; i.e., the size of the fungal fruiting body, the quality of resource in terms of number of conspecific sporophores growing within a radius of 50 cm, crowding of the clumps of fruiting bodies, and the quality of resource within a plot (20 m × 30 m). Multiple linear regression analyses showed that the influential spatial scale varied among the arthropod orders. The amount of resource at the scale of a clump made a significant contribution to the abundance of Coleoptera, and the fruiting body size significantly affected the abundance of Diptera on each fungal species. Collembolan abundance was significantly affected by the crowding of the clumps of fruiting bodies and the number of fruiting bodies per plot. These results suggest that the spatial distribution of fungal fruiting bodies may determine whether they are selected by arthropods visited.

show abstract

Long-Distance Migration of Drosophila

Cited by 142 publications

References 0 publications

Neighbourhood size and the importance of barriers to gene flow in an intertidal snail

Neighbourhood size and the importance of barriers to gene flow in an intertidal snail

Assemblages of drosophilids (Diptera, Drosophilidae) in mangrove forests: community ecology and species diversity

Abundance of mycophagous arthropods present on different species of fungi in relation to resource abundance at different spatial scales

Contact Info

Product

Resources

About