THE UNIQUE, WIDELY DISTRIBUTED, ESTUARINE SEA-ANEMONE, NEMATOSTELLA-VECTENSIS STEPHENSON - A REVIEW, NEW FACTS, AND QUESTIONS
THE UNIQUE, WIDELY DISTRIBUTED, ESTUARINE SEA-ANEMONE, NEMATOSTELLA-VECTENSIS STEPHENSON - A REVIEW, NEW FACTS, AND QUESTIONS
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DOI：
10.2307/1352679
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发表时间：
1994-06-01
期刊：
影响因子：
--
通讯作者：
UHLINGER, KR
中科院分区：
文献类型：
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作者：
HAND, C;UHLINGER, KR
小的，穴居的，爱德华海葵Nematostella vectensis广泛分布在河口和海湾。它最典型地发生在沼泽的池塘中，尽管它也可能发生在水下。我们汇编了它在北美发生的记录，从大西洋沿岸的新斯科舍省到乔治亚州，从墨西哥湾的佛罗里达到路易斯安那州，从太平洋沿岸的加利福尼亚到华盛顿。到目前为止，我们还没有发现它在阿拉巴马州或德克萨斯州存在的记录，尽管它在美国所有其他毗连的沿海州都存在。该物种也出现在英格兰。我们从许多地方获得了活的标本，并将来自英格兰、马里兰州、佐治亚州、加利福尼亚州、俄勒冈州和华盛顿州的雌性与来自新斯科舍、马里兰州、佐治亚州和俄勒冈州的配偶杂交。这24个杂交都产生了可存活的第一代海葵，这些海葵又产生了第二代海葵。我们认为这是这种广泛分布的海葵是单一物种的证据。我们从11个地区获得了活的体蚊病。其中，只有缅因州、马里兰州、乔治亚州和俄勒冈州的样本含有两性。来自新斯科舍省的样本都是男性，而来自英格兰、新罕布什尔、加利福尼亚和华盛顿的样本都是女性。我们假设单性样本来自该物种无性繁殖的克隆。
The small, burrowing, edwardsiid sea anemone Nematostella vectensis is widely distributed in estuaries and bays. Most typically it occurs in pools in marshes though it may occur subtidally as well. We have compiled records of its occurrence in North America from Nova Scotia to Georgia along the shores of the Atlantic Ocean, from Florida to Louisiana in the Gulf of Mexico and from California to Washington on the Pacific coast. To date we have found no records of its presence in Alabama or Texas, though it is present in all other of the contiguous coastal states of the United States. The species also occurs in England. We have obtained living specimens from many locations and have crossed females from England Maryland, Georgia, California, Oregon, and Washington with mates from Nova Scotia, Maryland, Georgia, and Oregon. These 24 crosses all yielded viable first-generation anemones that in turn produced second-generation animals. We accept this as proof that this widely distributed anemone is a single species. We have obtained living N. vectensis from 11 areas. Of these, only samples from Maine, Maryland, Georgia, and Oregon contained both sexes. The sample from Nova Scotia was all male and our samples from England, New Hampshire, California, and Washington were all female. We hypothesize that the unisexual samples were from clones resulting from asexual reproduction in this species.