Distribution and hybridization of two sedentary gobies (Pomatoschistus microps and Pomatoschistus marmoratus) in the lagoons of southern France

IF 0.8 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
P. Berrebi, Marielle Trébuchon
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引用次数: 1

Abstract

Pomatoschistus marmoratus and Pomatoschistus microps are small sedentary gobies inhabiting the lagoons of European Mediterranean and Atlantic coasts. Along the French Mediterranean coast their respective geographical distribution is not precisely known, in part because they are cryptic species. In this study, 512 gobies of both species were caught as 17 samples in 12 lagoons of the Gulf of Lion on the French Mediterranean coast. They were genotyped at six microsatellite loci and investigated statistically using multidimensional analyses, Bayesian assignment (Structure) and NewHybrids classification. This allowed the contrasted distribution of each species (P. microps in the east, P. marmoratus in the west) to be described, with several exceptions. Neither geographic structure nor isolation by distance was detected among differentiated populations of each species. The suggested mechanism is a deep sedentary behaviour associated with foundations following extinctions. The two species are sympatric or even in syntopy in five or six sampled lagoons producing rare fertile hybrids.
法国南部泻湖中两种定居虾虎鱼的分布和杂交
斑胸虾虎鱼和小斑胸虾虎是栖息在欧洲地中海和大西洋海岸泻湖中的小型定居虾虎鱼。在法国地中海沿岸,它们各自的地理分布尚不清楚,部分原因是它们是神秘物种。在这项研究中,在法国地中海沿岸狮子湾的12个泻湖中捕获了512只这两种虾虎鱼,作为17个样本。他们在六个微卫星基因座上进行了基因分型,并使用多维分析、贝叶斯分配(结构)和NewHybrids分类进行了统计研究。这使得除了几个例外,每个物种(东部的微小P.microps,西部的土拨鼠P.marmoratus)的对比分布得以描述。在每个物种的分化种群中,既没有检测到地理结构,也没有检测到距离隔离。所提出的机制是一种与物种灭绝后的基础有关的深度久坐行为。这两个物种在五六个采样的泻湖中是同域的,甚至是同源的,产生了罕见的可育杂交种。
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来源期刊
Scientia Marina
Scientia Marina 生物-海洋与淡水生物学
CiteScore
2.10
自引率
0.00%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.
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