Locomotor responses to salt stress in native and invasive mud-tidal gastropod populations (Batillaria)
- 주제(키워드) adaptive divergence , invasive species , locomotion , salinity , snail behavior
- 등재 SCIE, SCOPUS
- OA유형 Green Published, gold, Green Submitted
- 발행기관 John Wiley and Sons Ltd
- 발행년도 2021
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000175346
- 본문언어 영어
- Published As http://dx.doi.org/10.1002/ece3.7065
- PubMed https://pubmed.ncbi.nlm.nih.gov/33437442
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Plasticity in salt tolerance can be crucial for successful biological invasions of novel habitats by marine gastropods. The intertidal snail Batillaria attramentaria, which is native to East Asia but invaded the western shores of North America from Japan 80 years ago, provides an opportunity to examine how environmental salinity may shape behavioral and morphological traits. In this study, we compared the movement distance of four B. attramentaria populations from native (Korea and Japan) and introduced (United States) habitats under various salinity levels (13, 23, 33, and 43 PSU) during 30 days of exposure in the lab. We sequenced a partial mitochondrial CO1 gene to infer phylogenetic relationships among populations and confirmed two divergent mitochondrial lineages constituting our sample sets. Using a statistical model-selection approach, we investigated the effects of geographic distribution and genetic composition on locomotor performance in response to salt stress. Snails exposed to acute low salinity (13 PSU) reduced their locomotion and were unable to perform at their normal level (the moving pace of snails exposed to 33 PSU). We did not detect any meaningful differences in locomotor response to salt stress between the two genetic lineages or between the native snails (Japan vs. Korea populations), but we found significant locomotor differences between the native and introduced groups (Japan or Korea vs. the United States). We suggest that the greater magnitude of tidal salinity fluctuation at the US location may have influenced locomotor responses to salt stress in introduced snails. © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
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