Gene Flow among Conspecific Populations of Baetis sp. (Ephemeroptera): Adult Flight and Larval Drift

Schmidt, Steven K.; Hughes, Jane; Bunn, Stuart E.

doi:10.2307/1467730

Cited by 114 publications

(139 citation statements)

References 23 publications

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“…Furthermore, deviations were not referable to a single or particular locus, as might have been supposed in case of errors in gel running and subsequent interpretation. Similar findings were reported by different studies dealing with the population genetic structure of some mayfly species belonging to the Baetidae family, together with other freshwater invertebrates, living in some Australian rainforest streams (Bunn & Hughes, 1997;Hughes et al, 1998;Hughes et al, 2000Hughes et al, , 2003aSchmidt et al, 1995). Monaghan et al (2001Monaghan et al ( , 2002, by investigating the genetic differentiation of Baetis alpinus in fragmented Alpine streams, reported hétérozygote deficiencies even more pronounced than those observed by Schmidt et al (1995) and Bunn & Hughes (1997).…”

Section: Discussionsupporting

confidence: 85%

“…As stressed by Hughes et al (2000), similar findings "would result if a small number of families with differing alíele frequencies were mixed". As an explanatory mechanism, Schmidt et al (1995) and Bunn & Hughes (1997) reported that populations were the re- suits of only a few ovipositing females in each generation. The occurrence of few matings at any time in Australian streams was explained by suggesting that in this subtropical environment emergence does not take place synchronously (Bunn & Hughes, 1997;Hughes et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

“…Different investigations have been carried out in this field using mtDNA (Schultheis et al, 2002;Hughes et al, 2003b) and allozyme electrophoresis (Jackson & Resh, 1992;Schmidt et al, 1995;Bunn & Hughes, 1997;Monaghan et al, 2002;Hughes et al, 2003b;Wilcock et al, 2003). In many of these investigations no consistent pattern of spatial and genetic differentiation was observed across sites and loci, and the significant departures from Hardy-Weinberg proportions of the sampled populations have suggested that finescale patterns are the consequence of patchy recruitment from a small number of matings and limited instream dispersal (Bunn & Hughes, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Genetic differentiation among populations ofBaetis rhodani(Ephemeroptera, Baetidae) in three Italian streams

Rebora

Lucentini

Palomba

et al. 2005

Italian Journal of Zoology

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Seven microsatellite loci were recently described for the mayfly Baetis rhodani, but, at present, no data are available on the population structure of this species using these loci. We used four of these microsatellite loci for a preliminary analysis of the genetic differentiation of the mayfly B. rhodani in six populations from three Italian streams belonging to the same or different, but geographically distant, drainage basins. From these data, genetic polymorphism was observed between the sampled populations and clear differences were identified between pairs of populations; however, no specific population pattern was observed. The high F ST values suggest a limited dispersal of the species across the sampling sites. On the whole, the results obtained with microsatellite loci, characterized by marked heterozygosity deficiency, confirm the hypothesis of the patchy recruitment from a small number of matings and limited in-stream dispersal, as previously pointed out for some other baetid mayflies by genetic analyses using allozymes and mtDNA. This is the first contribution to a knowledge of the genetic structure of Italian Baetis rhodani populations.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic differentiation among populations ofBaetis rhodani(Ephemeroptera, Baetidae) in three Italian streams

Rebora

Lucentini

Palomba

et al. 2005

Italian Journal of Zoology

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“…Generally, it appears that, for groups such as insects possessing a flying stage within their life history, dispersal is widespread within and between drainages (eg Schmidt et al, 1995;Hughes et al, 1998;Miller et al, 2002), although there are exceptions such as blepheracerid midges, which show very restricted dispersal patterns even among streams in the same subcatchment (Wishart and Hughes, 2003).…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial DNA signatures of restricted gene flow within divergent lineages of an atyid shrimp (Paratya australiensis)

et al. 2004

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“…The 'patchy recruitment hypothesis' (Schmidt et al 1995;Bunn and Hughes 1997) states that populations are founded by small number of females in each generation. This constitutes a bottleneck and leads to low heterozygosities.…”

Section: Heterozygositymentioning

confidence: 99%

Genetic contributions to the study of taxonomy, ecology, and evolution of mayflies (Ephemeroptera): review and future perspectives

Monaghan

Sartori

2009

Aquatic Insects

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Since the late 1970s, allozymes, microsatellites, and DNA sequence variation have been widely used to study the taxonomy, ecology, and evolution of mayflies (Ephemeroptera). Early research investigated species limits in morphologically cryptic groups and attempted to link immature and adult stages using genetic markers. Population genetic studies soon followed, with a strong emphasis on measuring gene flow as a proxy for dispersal. Most recently, direct sequencing of DNA and molecular phylogenetic tools have broadened our understanding of mayfly systematics and evolution. Interestingly, these newer approaches have also begun to re-address some of the earliest questions about species circumscription and taxonomy. Here we present an overview of genetics in mayfly research to date, focusing on how genetic approaches have been applied to taxonomy, phylogenetics, and population genetics. We identify a number of outstanding questions and highlight some of the most interesting topics for future research. These include the need for evolutionarily valid species concepts when applying genetics to taxonomy, a better understanding of how parthenogenesis may affect population genetic structure, and increased use of DNA sequence data from nuclear gene regions.

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Gene Flow among Conspecific Populations of Baetis sp. (Ephemeroptera): Adult Flight and Larval Drift

Cited by 114 publications

References 23 publications

Genetic differentiation among populations ofBaetis rhodani(Ephemeroptera, Baetidae) in three Italian streams

Genetic differentiation among populations ofBaetis rhodani(Ephemeroptera, Baetidae) in three Italian streams

Mitochondrial DNA signatures of restricted gene flow within divergent lineages of an atyid shrimp (Paratya australiensis)

Genetic contributions to the study of taxonomy, ecology, and evolution of mayflies (Ephemeroptera): review and future perspectives

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