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对比在墨西哥同域分布的一种专性寄生虫（棘头虫纲：多形科）和一种广性寄生虫的种群遗传结构。

Contrasting the population genetic structure of a specialist (: Acanthocephala: Polymorphidae) and a generalist parasite () distributed sympatrically in Mexico.

作者信息

García-Varela Martín, López-Jiménez Alejandra, González-García Marcelo Tonatiuh, Sereno-Uribe Ana Lucia, Andrade-Gómez Leopoldo

机构信息

Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Avenida Universidad 3000, Ciudad Universitaria, CP 04510 México City, Mexico.

Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, CP 04510 México City, Mexico.

出版信息

Parasitology. 2023 Apr;150(4):348-358. doi: 10.1017/S0031182023000033. Epub 2023 Jan 12.

DOI:10.1017/S0031182023000033
PMID:36748352
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10090582/
Abstract

Polymorphidae is a monophyletic group of acanthocephalans distributed worldwide. Within this family, is a specialist species that uses a single bird species as a definitive host. is a generalist species that uses a broad spectrum of definitive hosts to complete its life cycle. In the current research, sequences of cytochrome c oxidase subunit 1 () from mitochondrial DNA were generated from 44 specimens of and 76 of distributed sympatrically in 6 biogeographic provinces of Mexico with the objective of characterizing and comparing the population genetic structure of 2 acanthocephalan species with opposing life strategies. The phylogeographic studies indicated that the populations of both species lacked a phylogeographic structure and exhibited high haplotype diversity, low nucleotide diversity and low values among the biogeographic provinces; in combination with negative values on the neutrality test, this suggests that the populations of acanthocephalans are expanding. Paratenic hosts are key for the transmission from intermediate to definitive hosts in the generalist species. However, the inclusion of paratenic hosts does not play a principal role in the population genetic structure of within its distribution along the coasts of Mexico.

摘要

多形科是一类分布于全球的单系棘头虫类群。在这个科中，[物种名称1]是一个特化物种，它以单一鸟类物种作为终末宿主。[物种名称2]是一个泛化物种，它利用广泛的终末宿主来完成其生命周期。在当前的研究中，从墨西哥6个生物地理省份同域分布的44个[物种名称1]标本和76个[物种名称2]标本中获取了线粒体DNA细胞色素c氧化酶亚基1（COI）的序列，目的是表征和比较具有相反生活策略的两种棘头虫类群的种群遗传结构。系统地理学研究表明，这两个物种的种群都缺乏系统地理结构，并且在生物地理省份中表现出高单倍型多样性、低核苷酸多样性和低FST值；结合中性检验的负值，这表明棘头虫类群的种群正在扩张。在泛化物种中，转续宿主是从中间宿主传播到终末宿主的关键。然而，在墨西哥沿海分布范围内，转续宿主的纳入在[物种名称2]的种群遗传结构中并不起主要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/2194e4ecbdf7/S0031182023000033_fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/b3ab6d346e52/S0031182023000033_figAb.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/ff1f93b0e785/S0031182023000033_fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/6e17d27c593d/S0031182023000033_fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/1b41e091350c/S0031182023000033_fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/4ceb39c63bf7/S0031182023000033_fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/416b6d358465/S0031182023000033_fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/2194e4ecbdf7/S0031182023000033_fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/b3ab6d346e52/S0031182023000033_figAb.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/ff1f93b0e785/S0031182023000033_fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/6e17d27c593d/S0031182023000033_fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/1b41e091350c/S0031182023000033_fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/4ceb39c63bf7/S0031182023000033_fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/416b6d358465/S0031182023000033_fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/96f0/10268173/2194e4ecbdf7/S0031182023000033_fig6.jpg

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