期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 285, 期 1886, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rspb.2018.1158
关键词
ecological islands; myrmecophily; DNA barcoding; haplotype diversity; divergence; isolation by distance
资金
- Danish National Research Foundation [DNRF57]
- Spanish MINECO [PRX15/00305, IJCI-2016-29083]
- AEI/FEDER-EU [CGL2016-76]
- Putnam Expeditionary Fund of the Museum of Comparative Zoology
- U.S National Science Foundation [DEB-9615760, DEB 0447244, SES 0750480, DEB-1541560]
The role of specialization in diversification can be explored along two geological axes in the butterfly family Lycaenidae. In addition to variation in host-plant specialization normally exhibited by butterflies, the caterpillars of most Lycaenidae have symbioses with ants ranging from no interactions through to obligate and specific associations, increasing niche dimensionality in ant-associated taxa. Based on mitochondrial sequences from 8282 specimens from 967 species and 249 genera, we show that the degree of ecological specialization of lycaenid species is positively correlated with genetic divergence, haplotype diversity and an increase in isolation by distance. Nucleotide substitution rate is higher in carnivorous than phytophagous lycaenids. The effects documented here for both micro- and macroevolutionary processes could result from increased spatial segregation as a consequence of reduced connectivity in specialists, niche-baser:I divergence or a combination of both. They could also provide an explanation for the extraordinary diversity of the Lycaenidae and, more generally, for diversity in groups of organisms with similar multi-dimensional ecological specialization.
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