Phylogeography of walnut pest Atrijuglans hetaohei (Lepidoptera: Gelechioidea) reveals comprehensive influence of geographic barriers and human activities

Wang, Qiqi; Shaheen, Tayyab; Li, Rong; Guo-Ning, Tang

doi:10.1016/j.aspen.2022.101962

Cited by 2 publications

(1 citation statement)

References 61 publications

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“…Insect invasion power is strongly influenced by the size and quality of plants produced from agricultural activities. Physical barriers (mountains, rivers and related environmental factors) and human agricultural activities have been able to influence the structure and distribution of insect populations to varying degrees [52,53].…”

Section: Discussionmentioning

confidence: 99%

Spatial Distribution and Genetic Diversity of The Fall Armyworm, <em>Spodoptera frugiperda</em> J.E. Smith (Lepidoptera: Noctuidae) in the Bali Province and Lesser Sunda, Indonesia

Supartha¹,

Susila²,

Yudha³

et al. 2022

Preprint

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Spodoptera frugiperda is an invasive pest that has spread in various parts of the world. These pests have the ability to spread and adapt highly to new habitats. Until now, it is not known with certainty the distribution of these invasive pests in Eastern Indonesia, especially Bali and Nusa Tenggara. This study aims to map the spatial distribution and genetic distribution of S. frugiperda which damages maize in the areas of Bali and Nusa Tenggara. This research was conducted using a survey method from May to September 2022 covering the islands of Bali, Lombok, Sumbawa, Sumba, Flores, and Timor. The results showed that S. frugiperda had spread evenly in Bali and Nusa Tenggara. The results of PCR amplification in the COI gene from 9 sample isolates from all research locations showed the similarity of DNA bands leading to the Spodoptera frugiperda species with a banding pattern length of 683 – 697. These results indicated that the distribution of genetic variants of corn caterpillars in Bali, NTB, and NTT was confirmed as S. frugiperda species. However, the isolated gene S. frugiferda, which was shown by the alignment results of the sequences from Lombok, was confirmed as a different strain from strains from Bali, Sumba, Sumbawa, Flores, and Timor. This incident can be seen from the difference in the protein base composition of S. frugiperda from Bali, Sumba, Sumbawa, Timor, and Flores. The results of phylogenetic analysis in this study confirmed 3 clusters of the genetic closeness of S. frugiperda. Cluster-1 comes from the results of the search for specimens of JB FAW and KB FAW from Bali, SB FAW and SB FAW Sorghum from Sumba, SW FAW from Sumbawa, KP FAW from Timor, and FL FAW from Flores. Cluster-2 is an isolate outside of our species. Cluster-3 comes from the search for LT and LS FAW specimens from Lombok. The genetic distance between cluster-1 and cluster-3 is quite far, which is 0.20 mu.

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Section: Discussionmentioning

confidence: 99%

Spatial Distribution and Genetic Diversity of The Fall Armyworm, <em>Spodoptera frugiperda</em> J.E. Smith (Lepidoptera: Noctuidae) in the Bali Province and Lesser Sunda, Indonesia

Supartha¹,

Susila²,

Yudha³

et al. 2022

Preprint

View full text Add to dashboard Cite

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Genetic Diversity of Two Globally Invasive Snails in Asia and Americas in Relation with Agricultural Habitats and Climate Factors

et al. 2022

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The successful establishment of invasive populations is closely linked to environmental factors. It is unclear whether coexisting species in the native area follow the same genetic pattern in the invaded continents under the local climate factors. Two coexisting morphologically similar snails (Pomacea canaliculata and P. maculata), native to tropical and sub-tropical South America, have become invasive species for agriculture production and wetland conservation across five continents over 40 years. We analyzed the correlation between the genetic diversity of the two snails and the climate factors or habitat changes. Based on the 962 sequences from the invaded continents and South America, the nucleotide diversity in the agricultural habitat was low for P. canaliculata, whereas it was high for P. maculata, compared with that in the non-agricultural habitat. The two snails showed a divided population structure among the five continents. The P. canaliculata population in the invaded continents has remained stable, whereas the P. maculata population expanded suddenly. Seven main haplotype networks and two ancestral haplotypes (Pc3, Pm1) were found in the P. canaliculata and P. maculata populations. The haplotypes of the two snails were related to local climate factors. The overall fixation index of P. canaliculata and P. maculata was 0.2657 and 0.3097 between the invaded continents and South America. The population expansion of the two snails fitted the isolation-by-distance model. We discovered nine new sequences from the sampling locations. Overall, the genetic diversity and genetic differentiation of the two invasive snails were closely related to geographic separation, agricultural habitat, and climate factors.

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Phylogeography of walnut pest Atrijuglans hetaohei (Lepidoptera: Gelechioidea) reveals comprehensive influence of geographic barriers and human activities

Cited by 2 publications

References 61 publications

Spatial Distribution and Genetic Diversity of The Fall Armyworm, <em>Spodoptera frugiperda</em> J.E. Smith (Lepidoptera: Noctuidae) in the Bali Province and Lesser Sunda, Indonesia

Spatial Distribution and Genetic Diversity of The Fall Armyworm, <em>Spodoptera frugiperda</em> J.E. Smith (Lepidoptera: Noctuidae) in the Bali Province and Lesser Sunda, Indonesia

Genetic Diversity of Two Globally Invasive Snails in Asia and Americas in Relation with Agricultural Habitats and Climate Factors

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