Research of genetic resources in the coastal intertidal zone around Oshika Peninsula

大鹿半岛沿岸潮间带遗传资源研究

基本信息

批准号：
09660190
负责人：
KIJIMA Akihiro
金额：
$ 2.24万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660190/
关键词：
GENETIC RESOURCES OSHIKA PENINSULA GENETIC DEVERSITY ANIMALS IN TIDAL ZONE DISTRIBUTION ISOZYMES GENETIC VARIABILITY SEASONAL CHANGE 多様性軟体動物生物多様性潮間帯アイソガイム

项目摘要

It is one of the most important scientific programs for conservation of marine species and coastal environments to clarify the distribution and change of species composition among seasons and years in the coastal intertidal zones of complex environmental area. In this project, the distributions of species were surveyed in the 4 locations of 3 area in Oshika peninsula where warm and cold currents are mixed. Also, genetic differences were detected among morphologically similar species and genetic variability was demonstrated in the two common star fishes, Asterina pectinifera and A. amurensis, using isozyme markers.As results, a variety of species has been observed in the 4 localities of 3 areas in Oshika peninsula. The distribution of them was not drastically changed among different seasons and different years, but two star fishes were observed much more in summer season than in winter season. Compositions of species were similar among the localities, but in Koshidakaganngara (Tegula restica) was distributed much more in southern part than in northern part of Oshika peninsula. From the results, composition of species in the areas of Oshika peninsula could be one of the valuable index of environmental change.Isozyme analysis was performed for detection of morphologically similar specimens. Clear genetic divergence was observed among Polyplacophora species, and genetic identity was observed among color variations of Polytropa spp. High genetic variability was observed in both two star fish species compare with in average of molluscan species. Isozyme marker is considered to be usable genetic marker for detecting species and genetic characterization such as genetic variability.We will be publish a text book titled "Animals observed in the tidal zone of Oshika peninsula", on the results of this project in the year, 2001.

明确复杂环境区沿海潮间带物种组成随季节、年份的分布和变化，是海洋物种和海岸环境保护最重要的科学计划之一。本项目对大鹿半岛暖寒流混合的3个地区、4个地点的物种分布进行了调查。此外，利用同工酶标记，在形态相似的物种之间检测到遗传差异，并证明了两种常见海星鱼（Asterina pectinifera 和 A. amurensis）的遗传变异性。结果，在 3 个地区的 4 个地点观察到了多种物种在大鹿半岛。不同季节、不同年份其分布变化不大，但夏季观察到的两种海星鱼明显多于冬季。各地区的物种组成相似，但在小鹿半岛南部的科希达卡甘加拉（Tegula Restica）的分布远多于北部。从结果来看，大鹿半岛地区的物种组成可能是环境变化的有价值的指标之一。对形态相似的标本进行了同工酶分析。在多板藻属物种之间观察到明显的遗传分化，并且在多板藻属物种的颜色变异之间观察到遗传同一性。与软体动物物种的平均遗传变异性相比，两种海星鱼物种均观察到较高的遗传变异性。同工酶标记被认为是可用于检测物种和遗传特征（例如遗传变异性）的遗传标记。我们将在今年出版一本名为“在大鹿半岛潮汐带观察到的动物”的教科书，该书介绍了该项目的结果， 2001年。