Contrasting effects of habitat discontinuity on three closely related fungivorous beetle species with diverging host‐use patterns and dispersal ability
Contrasting effects of habitat discontinuity on three closely related fungivorous beetle species with diverging host‐use patterns and dispersal ability
复制标题
栖息地不连续性对三种密切相关的食真菌甲虫物种的影响对比，这些物种具有不同的宿主使用模式和扩散能力
DOI：
10.1002/ece3.4862
复制
发表时间：
2019
影响因子：
2.6
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Kobayashi;T. and Sota;T.
了解景观结构如何影响生物多样性格局和生态过程是生态学研究和保护实践中必不可少的。森林不连续性是影响森林栖息物种种群持续性和遗传结构的主要驱动因素。然而，对种群的实际影响是高度物种特异性的。在这项研究中，我们测试了是否扩散能力和主机专业化与森林不连续性的敏感性，使用三个密切相关的，同域食菌性小甲虫物种（两个主机专家，adjacitemnus asilisandO.crassus;一个主机通才，O.kawanabei）。景观遗传分析和估计的有效迁移表面（EEMS）的方法一致表明对比差异的遗传结构和配置的林地覆盖之间的关系。其余2个种均表现出明显的空间遗传结构，但景观遗传分析的结果在2个种之间存在差异：优势种粗叶稻的空间遗传结构主要由景观抗性决定，而优势种川边稻的遗传分化仅由地理距离决定。这一发现是一致的预测，非森林地区的行为更强烈的专业人群之间的障碍。我们的研究结果表明，宿主范围的差异可以影响栖息在同一景观中的密切相关的物种对栖息地不连续性的物种特异性抵抗力。
Understanding how landscape structure influences biodiversity patterns and ecological processes are essential in ecological research and conservation practices. Forest discontinuity is a primary driver affecting the population persistence and genetic structure of forest‐dwelling species. However, the actual impacts on populations are highly species‐specific. In this study, we tested whether dispersal capability and host specialization are associated with susceptibility to forest discontinuity using three closely related, sympatric fungivorous ciid beetle species (two host specialists,Octotemnus assimilisandO.crassus; one host generalist,O.kawanabei). Landscape genetic analyses and the estimation of effective migration surfaces (EEMS) method consistently demonstrated contrasting differences in the relationships between genetic structure and configuration of forest land cover.Octotemnus assimilis, one of the specialists with a presumably higher dispersal capability due to lower wing loading, lacked a definite spatial genetic structure in our study landscape. The remaining two species showed clear spatial genetic structure, but the results of landscape genetic analyses differed between the two species: while landscape resistance appeared to describe the spatial genetic structure of the specialistO.crassus, genetic differentiation of the generalistO.kawanabeiwas explained by geographic distance alone. This finding is consistent with the prediction that nonforest areas act more strongly as barriers between specialist populations. Our results suggest that differences in host range can influence the species‐specific resistance to habitat discontinuity among closely related species inhabiting the same landscape.
登录
查看更多内容
影响因子：
5.2
作者：
Berwaerts, K;Van Dyck, H;Aerts, P
通讯作者：
Aerts, P
大型真菌的子实体是鞘翅目甲虫的栖息地。
DOI：
--
发表时间：
1960
期刊：
影响因子：
--
作者：
K. Paviour
通讯作者：
K. Paviour
影响因子：
1.9
作者：
M. Jonsell;G. Nordlander;M. Jonsson
通讯作者：
M. Jonsson
甲虫物种对热带森林破碎化的反应
DOI：
--
发表时间：
1998
期刊：
影响因子：
--
作者：
R. Didham;P. Hammond;J. Lawton;P. Eggleton;N. Stork
通讯作者：
N. Stork
DOI：
10.1139/z79-180
发表时间：
1979-01-01
期刊：
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
影响因子：
--
作者：
GIBO, DL;PALLETT, MJ
通讯作者：
PALLETT, MJ