气候变化领域集成服务门户(CCPortal): Genetic structure of Baltic Mytilus populations

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.873699
	Genetic structure of Baltic Mytilus populations
	Stuckas; Heiko; Knöbel; Loreen; Schade; Hanna; Breusing; Corinna; Hinrichsen; Hans-Harald; Bartel; Manuela; Langguth; Klaudia; Melzner; Frank
发布日期	2017-03-21
数据集类型	dataset
英文简介	While secondary contact between Mytilus edulis and M. trossulus in North America results in mosaic hybrid zone formation, both species form a hybrid swarm in the Baltic. Despite pervasive gene flow, Baltic Mytilus species maintain substantial genetic and phenotypic differentiation. Exploring mechanisms underlying the contrasting genetic composition in Baltic Mytilus species will allow insights into processes such as speciation or adaptation to extremely low salinity. Previous studies in the Baltic indicated that only weak interspecific reproductive barriers exist and discussed the putative role of adaptation to environmental conditions. Using a combination of hydrodynamic modelling and multilocus genotyping we investigate how oceanographic conditions influence passive larval dispersal and hybrid swarm formation in the Baltic. By combining our analyses with previous knowledge we show a genetic transition of Baltic Mytilus species along longitude 12°-13°E, i.e. a virtual line between Malmö (Sweden) and Stralsund (Germany). Although larval transport only occurs over short distances (10-30 km), limited larval dispersal could not explain the position of this genetic transition zone. Instead, the genetic transition zone is located at the area of maximum salinity change (15 to 10 psu). Thus, we argue that selection results in weak reproductive barriers and local adaptation. This scenario could maintain genetic and phenotypic differences between Baltic Mytilus species despite pervasive introgressive hybridization.
空间范围	Median Latitude: 54.518842 * Median Longitude: 5.773898 * South-bound Latitude: 48.210000 * West-bound Longitude: -122.700000 * North-bound Latitude: 58.880000 * East-bound Longitude: 18.800000
时间范围	2003-10-01T00:00:00 - 2013-11-01T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/216551
推荐引用方式 GB/T 7714	Stuckas,Heiko,Knöbel,et al. Genetic structure of Baltic Mytilus populations.2017-03-21.https://doi.org/10.1594/PANGAEA.873699.