A speciation gene for left–right reversal in snails results in anti-predator adaptation

uTaipei > College of Science > Department of Applied Physics and Chemistry > Periodical Articles > Item 987654321/4658

Please use this identifier to cite or link to this item: http://utaipeir.lib.utaipei.edu.tw/dspace/handle/987654321/4658

Title:	A speciation gene for left–right reversal in snails results in anti-predator adaptation
Authors:	吳書平 Shu-Ping Wu Masaki Hoso Yuichi Kameda Takahiro Asami Makoto Kato & Michio Hori
Date:	2010-12-07
Issue Date:	2011-06-22
Abstract:	How speciation genes can spread in a population is poorly understood. In land snails, a single gene for left–right reversal could be responsible for instant speciation, because dextral and sinistral snails have difficulty in mating. However, the traditional two-locus speciation model predicts that a mating disadvantage for the reversal should counteract this speciation. In this study, we show that specialized snake predation of the dextral majority drives prey speciation by reversal. Our experiments demonstrate that sinistral Satsuma snails (Stylommatophora: Camaenidae) survive predation by Pareas iwasakii (Colubroidea: Pareatidae). Worldwide biogeography reveals that stylommatophoran snail speciation by reversal has been accelerated in the range of pareatid snakes, especially in snails that gain stronger anti-snake defense and reproductive isolation from dextrals by sinistrality. Molecular phylogeny of Satsuma snails further provides intriguing evidence of repetitive speciation under snake predation. Our study demonstrates that a speciation gene can be fixed in populations by positive pleiotropic effects on survival.
Relation:	Nature Communications
Appears in Collections:	[Department of Applied Physics and Chemistry] Periodical Articles

Files in This Item:

There are no files associated with this item.

View Licence