Further records of nauplius y type IV Hansen from Scandinavian waters
Further records of nauplius y type IV Hansen from Scandinavian waters
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斯堪的纳维亚水域无节幼体 y 型 IV Hansen 的进一步记录
DOI：
10.1080/00364827.1972.10411213
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发表时间：
1972
期刊：
影响因子：
--
通讯作者：
T. Schram
中科院分区：
文献类型：
--
作者：
T. Schram
摘要 对来自 Oslofjorden 的不同大小和发育阶段的无节幼体 y IV 幼虫进行了说明、描述，并与 Hansen (1899) 等人描述的 y IV 幼虫进行了比较。该材料包括比之前记录的更短和更长的 y IV 幼虫，并且更长的 y IV 幼虫拥有比记录中最古老的无节幼体 I 更长的甲壳。尽管已知奥斯陆峡湾 I 型无节幼体幼虫的数量远高于 IV 型无节幼体，但后者在峡湾之外似乎更为丰富。无节幼体 IV 幼虫的地理分布也更广泛，实际上是两栖大西洋。揭示了这种分布的摘要，以及早期文献中的误解的概述。无节幼体 I 和 IV 代表两个不同的物种，在文献中对此的处理不准确。 y幼虫的亲本形态很可能与纤足类接近，但目前还不能给出最终答案。
Abstract Nauplius y IV larvae of different size and developmental stages from Oslofjorden are illustrated, described, and compared with y IV larvae described by Hansen (1899) and others. The material includes both shorter and longer y IV larvae than have been recorded previously and the longer y IV larvae possessed a longer carapace than that of the oldest nauplius I on record. Although the known number of nauplius I larvae from Oslofjorden is much higher than that of nauplius IV the latter type seems to be more abundant outside the fjord. Nauplius IV larvae also have a much wider geographical distribution, in fact amphi-Atlantic. A summary of this distribution is revealed, as well as an outline of misconceptions in ealier literature. Nauplius I and IV represent two different species which have been inaccurately treated in the literature. The parental forms of the y larvae are probably close to the Cirripedia, but the final answer cannot be given at present.