Differences in thermal tolerance in coexisting sexual and asexual mollies (Poecilia, Poeciliidae, Teleostei)

Fischer, C. E. C.; Schlupp, Ingo

doi:10.1111/j.1095-8649.2009.02214.x

Cited by 14 publications

(12 citation statements)

References 24 publications

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“…Tests of the Red Queen hypothesis found no evidence for differential parasitization of asexual and sexual reproductive forms (Tobler et al , 2005; Tobler & Schlupp, 2008). Asexual and sexual fishes, however, seem to differ in susceptibility to environmental stress, as P. formosa suffer from higher offspring mortality under food stress (Tobler & Schlupp, 2010) and higher adult mortality at cold temperatures (Fischer & Schlupp, 2009). Heubel (2004) studied the population ecology of this system and explained spatial and temporal variation of the abundance of P. formosa but did not explicitly test for niche segregation.…”

Section: Introductionmentioning

confidence: 99%

Dietary niche overlap in sympatric asexual and sexual livebearing fishes Poecilia spp.

Scharnweber

Plath

Winemiller

et al. 2011

Journal of Fish Biology

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The present study investigated the spatiotemporal patterns in trophic resource use in a system of a gynogenetic poeciliid fish, the Amazon molly Poecilia formosa, and its sexual congeners the sailfin molly Poecilia latipinna and the Atlantic molly Poecilia mexicana using gut contents analysis. No statistically significant differences in trophic resource use were found between sexual and gynogenetic species, but gut contents varied significantly across sites and over time. In addition, variation in trophic morphology (i.e. gut length) was significant across sites but not species, and laboratory experiments indicated that gut length is phenotypically plastic. Overall, trophic differentiation between coexisting asexual and sexual Poecilia appears to be minimal, and it is unlikely that niche differentiation contributes to a stable coexistence of the two reproductive forms.

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Section: Introductionmentioning

confidence: 99%

Dietary niche overlap in sympatric asexual and sexual livebearing fishes Poecilia spp.

Scharnweber

Plath

Winemiller

et al. 2011

Journal of Fish Biology

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“…Fishes were assigned randomly, but in even numbers to the two treatments. During the first 5 days, the fishes were allowed to acclimate to the new surroundings and conditions including temperature (Fischer & Schlupp, 2009) and were fed for only 15 min per day with thawed Chironomus sp. larvae (which are suitable for experiments with both species; unpubl.…”

Section: Results Of the Gzlm With ‘Number Of Consumed Chironomid Larvmentioning

confidence: 99%

“…Consequently, ecological differences between the species must exist, especially during winter. A different lower temperature tolerance is already identified as one ecological factor that could explain the higher overwinter survival rate of P. latipinna females compared with P. formosa (Fischer & Schlupp, 2009). A differential capability of the two species to cope with food stress could also be important, given that neonates of P. formosa are more sensitive to food stress compared with those of P. latipinna (Tobler & Schlupp, 2010).…”

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confidence: 99%

Feeding rates in the sailfin molly Poecilia latipinna and its coexisting sexual parasite, the gynogenetic Amazon molly Poecilia formosa

Fischer

Schlupp

2010

Journal of Fish Biology

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Feeding rates of the gynogenetic Amazon molly Poecilia formosa and one of its sexual hosts, the sailfin molly Poecilia latipinna, were measured under winter and summer temperature conditions. Food consumption of the unisexual P. formosa in winter conditions was significantly higher than that of P. latipinna, and it is hypothesized that the resulting food stress might have an important influence on the population composition of these closely related fishes via higher winter mortality in P. formosa.

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“…Though sailfin molly is typically considered a warm-water species (Corfield et al, 2008;Froese and Pauly, 2014), it exhibits a fairly broad thermal tolerance, ranging from 4.0 to 40.0°C (Nordlie, 2006;Fischer and Schlupp, 2009). However it appears to be stenothermic in respect to breeding temperature requirements (above 22°C; Dawes, 1991).…”

Section: Introductionmentioning

confidence: 99%

Global distribution and climatic match of a highly traded ornamental freshwater fish, the sailfin mollyPoecilia latipinna(Lesueur, 1821)

Koutsikos

Vardakas

Kalogianni

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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Predicting alien species' establishment through climate matching may inform management actions preventing future invasions. The aim of the current study was to evaluate the climate match of the sailfin molly (Poecilia latipinna) worldwide, with emphasis on Europe and the Mediterranean. A literature review indicated that the species presents a total of 100 non-indigenous occurrences in 29 countries worldwide. Predominantly, it has been introduced within tropical/subtropical climatic zones, where it is usually clustered near ornamental trade centers and malaria affected areas. Overall, sailfin molly distribution reflects a warm-stenothermic tolerance, however, there are validated populations outside the subtropical belt in geothermally heated water bodies. Its invasion potential, assessed by Climatch tool, indicated a low environmental match (5% of the assessed sites) within Europe, whereas in the Mediterranean this rose to 60%, though the species is recorded only at one location. This poor match of the model's output may reflect its inability to take into account local environmental filters. Intolerance to prolonged temperature drops appears to be the leading factor constraining sailfin molly establishment in Europe. Additional constrains on its successful invasion, i.e. specialized habitat requirements, limited propagule supply or reduced reproductive fitness, due to breeding manipulations of commercially available strains, are discussed. Keywords: climate matching / dispersal / invasive / ornamental / poeciliidsRésumé -Correspondance climatique de la distribution mondiale d'un poisson ornemental d'eau douce hautement commercialisé, le molly voile Poecilia latipinna (Lesueur, 1821). La prévision de l'établissement d'espèces exotiques par la correspondance climatique peut éclairer les mesures de gestion visant à prévenir de futures invasions. L'objectif de la présente étude était d'évaluer la correspondnace climatique du molly voile (Poecilia latipinna) dans le monde entier, en mettant l'accent sur l'Europe et la Méditerranée. Une analyse bibliographique a révélé que l'espèce présente un total de 100 occurrences non indigènes dans 29 pays à travers le monde. La plupart du temps, elle a été introduite dans les zones climatiques tropicales/subtropicales, où elle est généralement regroupée à proximité des centres commerciaux d'aquariophilie et des zones touchées par le paludisme. Dans l'ensemble, la distribution du molly voile reflète une sténothermie pour les eaux chaudes, mais il existe des populations validées en dehors de la ceinture subtropicale dans les plans d'eau réchauffés par sources chaudes. Son potentiel invasif, évalué par l'outil Climatch, indique une faible concordance environnementale (5% des sites évalués) en Europe, alors qu'en Méditerranée ce taux passe à 60%, bien que l'espèce ne soit signalée qu'à un seul endroit. Cette mauvaise adéquation des résultats du modèle peut refléter son incapacité à prendre en compte les filtres environnementaux locaux. L'intolérance aux baisses de température prolongé...

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Differences in thermal tolerance in coexisting sexual and asexual mollies (Poecilia, Poeciliidae, Teleostei)

Cited by 14 publications

References 24 publications

Dietary niche overlap in sympatric asexual and sexual livebearing fishes Poecilia spp.

Dietary niche overlap in sympatric asexual and sexual livebearing fishes Poecilia spp.

Feeding rates in the sailfin molly Poecilia latipinna and its coexisting sexual parasite, the gynogenetic Amazon molly Poecilia formosa

Global distribution and climatic match of a highly traded ornamental freshwater fish, the sailfin mollyPoecilia latipinna(Lesueur, 1821)

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