Life history traits and dispersal shape neutral genetic diversity in metapopulations

Garnier, Jimmy; Lafontaine, P.O.

doi:10.1007/s00285-022-01749-9

Cited by 6 publications

(1 citation statement)

References 44 publications

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“…We addressed two specific objectives: (1) Investigate environmental and spatial relationships by modelling H E as a function of the following variables, while also accounting for sample size: latitude, longitude, mean annual temperature, annual precipitation, temperature annual range, net primary productivity and elevation. (2) Assess taxa‐specific patterns to account for differences among taxonomic groups, as different clade history and life histories may lead to differences in genetic and/or latitudinal patterns among groups (Adams & Hadly, 2013; De Kort et al, 2021; DeWoody & Avise, 2000; Garnier & Lafontaine, 2022; Martinez et al, 2018; Miraldo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Macrogenetics reveals multifaceted influences of environmental variation on vertebrate population genetic diversity across the Americas

2023

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The broad scale distribution of population-specific genetic diversity (GD P ) across taxa remains understudied relative to species diversity gradients, despite its relevance for systematic conservation planning. We used nuclear DNA data collected from 3678 vertebrate populations across the Americas to assess the role of environmental and spatial variables in structuring the distribution of GD P , a key component of adaptive potential in the face of environmental change. We specifically assessed non-linear trends for a metric of GD P, expected heterozygosity (H E ), and found more evidence for spatial hotspots and cold spots in H E rather than a strict pattern with latitude. We also detected inconsistent relationships between H E and environmental variables, where only 11 of 30 environmental comparisons among taxa groups were statistically significant at the .05 level, and the shape of significant trends differed substantially across vertebrate groups. Only one of six taxonomic groups, freshwater fishes, consistently showed significant relationships between H E and most (four of five) environmental variables. The remaining groups had statistically significant relationships for either two (amphibians, reptiles), one (birds, mammals), or no variables (anadromous fishes).Our study highlights gaps in the theoretical foundation upon which macrogenetic predictions have been made thus far in the literature, as well as the nuances for assessing broad patterns in GD P among vertebrate groups. Overall, our results suggest a disconnect between patterns of species and genetic diversity, and underscores that largescale factors affecting genetic diversity may not be the same factors as those shaping taxonomic diversity. Thus, careful spatial and taxonomic-specific considerations are needed for applying macrogenetics to conservation planning.

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Section: Introductionmentioning

confidence: 99%

Macrogenetics reveals multifaceted influences of environmental variation on vertebrate population genetic diversity across the Americas

2023

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Population status and genetic assessment of mugger (Crocodylus palustris) in a tropical regulated river system in North India

Sharma,

Ghazi,

Katdare

et al. 2024

Sci Rep

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For rewilding the depleted crocodylian populations in India, a targeted ‘one-species one area’ based conservation approach was adopted in the early-1970s. Suitable habitats were identified and designated as protected areas, specifically targeted to recover a particular crocodylian species. A ~ 610 km stretch of Chambal River in the Ganga River Basin was declared as National Chambal Sanctuary to restore the ‘Critically Endangered’ gharial (Gavialis gangeticus), where active management of mugger (Crocodylus palustris) was discouraged. In the present study, we examined the population trends, occupancy, and genetic status of mugger by conducting population monitoring and genetic assessment to understand the status of potentially competitive mugger in the Sanctuary. Our finding suggests that the mugger population has notably increased and colonised the Sanctuary. We observed a moderate level of genetic diversity in the mugger, which was relatively higher compared to the gharial in the Sanctuary. The rapid colonization of ecological generalist mugger raises concerns about potential competition with ecological specialist gharial threatening its long-term sustainability. Considering the coexistence dynamics between the species, it is essential to extend adaptive management strategies for mugger to ensure successful recovery of gharial population in the Sanctuary.

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Genetic diversity, population genetic structure and demographic history of the Ribbontail stingray Taeniura lymma (Fabricius, 1775) (elasmobranchii: myliobatiformes: dasyatidae) along the Tanzanian coastline

Nehemia

2024

Mitochondrial DNA Part A

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Life history traits and dispersal shape neutral genetic diversity in metapopulations

Cited by 6 publications

References 44 publications

Macrogenetics reveals multifaceted influences of environmental variation on vertebrate population genetic diversity across the Americas

Macrogenetics reveals multifaceted influences of environmental variation on vertebrate population genetic diversity across the Americas

Population status and genetic assessment of mugger (Crocodylus palustris) in a tropical regulated river system in North India

Genetic diversity, population genetic structure and demographic history of the Ribbontail stingray Taeniura lymma (Fabricius, 1775) (elasmobranchii: myliobatiformes: dasyatidae) along the Tanzanian coastline

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