Genomic signatures of admixture and selection are shared among populations of <i>Zaprionus indianus</i> across the western hemisphere

Comeault, Aaron A.; Kautt, Andreas F.; Matute, Daniel R.

doi:10.1111/mec.16066

Cited by 5 publications

(5 citation statements)

References 108 publications

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“…Variation in strains is possible: our strain was from a different geographical location (Kansas) whereas Müller et al [ 17 ] examined three strains from South America. Nonetheless, all strains are from a single invasion of the western hemisphere [ 20 , 21 ].…”

Section: Discussionmentioning

confidence: 99%

Mating dynamics of a sperm-limited drosophilid, Zaprionus indianus

Gleason,

Danborno,

Nigro

et al. 2024

PLoS ONE

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When males have large sperm, they may become sperm limited and mating dynamics may be affected. One such species is Zaprionus indianus, a drosophilid that is an introduced pest species in the Americas. We examined aspects of mating behavior in Z. indianus to determine the senses necessary for mating and measure female and male remating habits. We found that vision is necessary for successful copulation, but wings, which produce courtship song, are not needed. Males need their foretarsi to successfully copulate and although the foretarsi may be needed for chemoreception, their role in hanging on to the female during copulation may be more important for successful mating. Females that mate once run out of sperm in approximately five days, although mating a second time greatly increases offspring production. Females do not seem to exert pre-mating choice among males with respect to mating with a familiar versus a novel male. Males are not capable of mating continuously and fail to produce offspring in many copulations. Overall, females of this species benefit from polyandry, providing an opportunity to study sexual selection in females. In addition, the dynamics of male competition for fertilizing eggs needs to be studied.

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Section: Discussionmentioning

confidence: 99%

Mating dynamics of a sperm-limited drosophilid, Zaprionus indianus

Gleason,

Danborno,

Nigro

et al. 2024

PLoS ONE

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“…Introgressed components within admixed ancestry can then contribute towards local adaptation, as elegantly demonstrated by Comeault et al (2021), and the age of introgressed elements can be dated (Errbii et al, 2021). However, evolution can find other mechanisms to drive phenotypic convergence.…”

Section: Inference Of Demographic Historymentioning

confidence: 92%

Seeing the whole picture: What molecular ecology is gaining from whole genomes

et al. 2021

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“…Genomic data suggest that despite a population bottleneck, introduced North American Z. indianus populations retain substantial genetic variation relative to congeners (Comeault et al 2020(Comeault et al & 2021. To test for potential genetic differences in parasitoid susceptibility, we compared emergence rates of Z. indianus from five Florida (FL) isofemale lines, and four Connecticut (CT) isofemale lines collected in 2022 (Rakes et al 2023).…”

Section: Comparing Parasitoid Susceptibility Across Z Indianus Popula...mentioning

confidence: 99%

“…Ephemeral food substrates, such as rotting fruits and their associated microbiota, result in both intra-and interspecific competition for drosophilids (Rohlfs & Hoffmeister 2004). Competition outcomes in drosophilids are widely context-dependent and may fluctuate based on abiotic and biotic factors such as air temperature or fruit substrate (Comeault & Matute 2021, de Paiva Mendonça 2023. Host-parasitoid interactions can also influence competition outcomes.…”

Section: Introductionmentioning

confidence: 99%

Strength of enemy release from parasitoids is context-dependent in the invasive African Fig Fly,Zaprionus indianus

Walsh-Antzak,

Erickson

2024

Preprint

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Understanding the mechanisms underlying the success of biological invasions is essential to employ effective prediction and management strategies. The escape from natural enemies in invaded regions (enemy release hypothesis) and increased competitive ability are hallmarks of invasive species; however, these two processes are rarely studied within the same context. Here, we examined the effect of enemy release on the competition outcomes of a successful invasive insect pest in North America, the African fig fly (Zaprionus indianus). Parasitoid wasps such asLeptopilina heterotomathat parasitize drosophilid larvae may seek out established species with known host suitability over a novel species, so we hypothesizedZ. indianusmay have low susceptibility to parasitoids, giving them a competitive advantage over co-occurring drosophilids. We tested this hypothesis by comparing the adult emergence rates fromZ. indianuslarvae reared alone or in competition withDrosophila hydeiorD. simulanslarvae in the presence and absence of parasitoid wasps. These interactions might be influenced by larval density, so we tested competitive interactions under low and high larval densities. At low larval densities,Z. indianusemerged at equal rates toD. hydeibut outcompetedD. simulans, and these outcomes were not affected by parasitoids. However, at high densities, the addition of parasitoids shifted competition outcomes in favor ofZ. indianus, suggesting enemy release provides a competitive advantage under some circumstances. These results indicate that the strength of enemy release inZ. indianusis widely dependent on contextual factors such as density and competitor species. Further investigation of how these results apply to field environments could offer insight into howZ. indianusalters ecosystems and how productive biological control may limit the spread ofZ. indianus.Short AbstractInvasive species may succeed in new environments in part because they are less susceptible to diseases and parasites that have co-evolved with local hosts, giving invaders a competitive advantage. We tested this hypothesis by competing an invasive fruit fly against established species in the presence of parasitoid wasps that lay their eggs in fruit fly larvae. We found that the invasive species generally outcompeted other species in the presence of parasitoids, but the extent of its advantage depended on the species it was competing against and the number of larvae present.

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Genomic signatures of admixture and selection are shared among populations of Zaprionus indianus across the western hemisphere

Cited by 5 publications

References 108 publications

Mating dynamics of a sperm-limited drosophilid, Zaprionus indianus

Mating dynamics of a sperm-limited drosophilid, Zaprionus indianus

Seeing the whole picture: What molecular ecology is gaining from whole genomes

Strength of enemy release from parasitoids is context-dependent in the invasive African Fig Fly,Zaprionus indianus

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