Spatial Population Genetics in Insects

A special issue of Insects (ISSN 2075-4450). This special issue belongs to the section "Insect Pest and Vector Management".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 1060

Special Issue Editor


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Guest Editor
Department of Biology and Ecology Center, Utah State University, Logan, UT, USA
Interests: spatial ecology; population biology; speciation; vector biology

Special Issue Information

Dear Colleagues,

Spatial population genetics provides a powerful lens by which to understand the role of environmental, ecological, and genetic features in shaping the genetic diversity, gene flow, hybridization, and population structure in insect species. This Special Issue invites contributions that expand the scope of landscape genetics to include spatially explicit analyses, such as genetic differentiation and introgression in relation to environmental heterogeneity, spatially mediated mechanisms, and spatial autocorrelation, as well as models that predict how landscape features influence connectivity.

Insects, with their diverse life histories, dispersal mechanisms, and ecological roles, are ideal organisms for such studies. Recent advances in computational methods, and particularly machine learning techniques like random forests, gradient forests, and neural networks, have improved the accuracy and flexibility of spatial genetic modeling by revealing complex relationships beyond those detected with traditional methods. Through the spatially explicit modeling of environmental, ecological, and population genetics data, this Special Issue seeks to deepen our understanding of the spatial patterns and processes underlying genetic variation in insect species.

We welcome research that combines genomic data, environmental variables, and advanced analytical methods to capture the complexity of the genetics of insect populations in spatial landscapes. This collection will highlight insights into how spatial factors influence ecological and evolutionary processes and how the spatially explicit analysis of population genetics data can make critical contributions to the conservation of biodiversity, pest management, and the control of vector-borne diseases.

Dr. Norah P. Saarman
Guest Editor

Manuscript Submission Information

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Keywords

  • landscape genetics
  • landscape resistance
  • population genetics
  • conservation genetics
  • connectivity
  • dispersal corridor
  • genotype-by-environment
  • hybrid zone
  • introgression
  • environmental gradient

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Published Papers (1 paper)

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Research

18 pages, 6207 KiB  
Article
Genetic Diversity and Connectivity of the Vulnerable Species Phengaris nausithous in Palencia (Northern Spain)
by Luis Fernando Sánchez-Sastre, Óscar Ramírez-del-Palacio, Pablo Martín-Ramos and María-Ángeles Hernández-Minguillón
Insects 2025, 16(2), 193; https://doi.org/10.3390/insects16020193 - 11 Feb 2025
Viewed by 801
Abstract
Habitat fragmentation is one of the most critical threats to species conservation, particularly for those with strict habitat preferences and specialized feeding and reproductive behaviors. In such cases, dispersal is essential for gene flow, playing a significant role in determining metapopulation dynamics and [...] Read more.
Habitat fragmentation is one of the most critical threats to species conservation, particularly for those with strict habitat preferences and specialized feeding and reproductive behaviors. In such cases, dispersal is essential for gene flow, playing a significant role in determining metapopulation dynamics and stability. This is precisely the case for many Lepidoptera, such as the dusky large blue butterfly (Phengaris nausithous), whose larvae feed on a single host plant (Sanguisorba officinalis) before completing their life cycle as social parasites of Myrmica ants. In Spain, P. nausithous is a vulnerable species found only in certain areas along the mountainous fringe of the northern plateau. In one of these regions (northern Palencia province), five populations separated by distances ranging from 2 to 40 km were studied using microsatellite markers, along with a control population located 200 km away (Soria province), to assess their genetic structure and population dynamics. The results revealed a lack of connectivity and pronounced genetic structuring in four of the studied populations. Only two populations within the Montaña Palentina Natural Park exhibited clear connectivity, demonstrating high gene flow between them. This could be explained by the availability and stability of S. officinalis patches, which may function as stepping stones. This study confirms the challenges posed by habitat fragmentation but also demonstrates that Phengaris nausithous can maintain gene flow between relatively distant areas. At a local level, the results provide the first evidence that the populations studied within the western part of the Montaña Palentina Natural Park belong to a single metapopulation, which may encompass the entire natural park. Full article
(This article belongs to the Special Issue Spatial Population Genetics in Insects)
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