Taxonomy and phylogeny of scalpellomorphan barnacles, Neolepadine collected from the deep-sea hydrothermal vents

从深海热液喷口收集的角形藤壶 Neolepadine 的分类学和系统发育

基本信息

批准号：
14340154
负责人：
YAMAGUCHI Toshiyuki
金额：
$ 9.54万
依托单位：
Chiba University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

项目摘要

The deep-sea hydrothermal and cold-seep endemic barnacle genus "Neolepas" s.l. in Suborder Lepadomorpha (now called suborder Scalpellomorpha) was studied on morphology and molecular biology to clarify taxonomy. Phylogeny. Neolepas s.l. can be classified four genera Neolepas s.s. (East Pacific Ridge), Vulcanolepas (previously called Neolepas, Lau and Havre basins, Southwest Pacific), Ashinkailepas (first cold-seep form, off Hatsushima Is., and hot vent form, Okinawa Trough and Myojin Knoll), and also cold-seep and hot vent forms Leucolepas (Edison seamount and Manus Basin, Sunda Trench and Okinawa Trough) based on morphology and its differences of peduncle and its scales. This morphological taxonomy is supported by the molecular phylogeny of the 12rRNA and 16SrRNA genes in the mitochondrial DNA.Those molecular data are also supported that those four genera compose of a clade and are considered to be monophyletic. In Scalpellomorpha, the following phylogeny was obtained based on molecular biology that genus Ashinkailepas is the most primitive in the four genera, genus Vulcanolepas has derived from genus Ashinkailepas, and then two genera of Leucolepas and Neolepas have derived from genus Vulcanolepas.In genus Ashinkailepas, the Southwest Pacific population collected from the Kermadec Back-arc Basin is the most primitive, and then is evolved to two populations of Okinawa Trough and Myojin Knoll in the Northwest Pacific. This phylogenetic relationship is supported the dispersal from the Southwest to Northwest Pacific in genus Ashinkailepas.The evolutions (1) from Ashinkailepas to Vulcanolepas (Southwest Pacific), (2) from Vulcanolepas to Leucolepas (West Pacific), and (3) from Vulcanolepas to Neolepas (East Pacific and Indian Ocean) are explained to dispersal within Southwest Pacific in case of (1), dispersal from Southwest Pacific to West Pacific in case of (2), and dispersal from Southwest Pacific to East Pacific and Indian Ocean in case of (3).

深海水热和冷种族藤壶属“ Neolepas” S.L.在亚级鳞翅目中（现在称为亚级眼皮层），研究了形态学和分子生物学，以阐明分类法。系统发育。 Neolepas S.L.可以分类四属Neolepas S.S. （东太平洋山脊），Vulcanolepas（以前称为Neolepas，Lau和Havre Basins，South-West Pacific），Ashinkailepas（第一种冷皮形式，Hatsushima of Hatsushima is。是。基于形态及其卵巢差异及其尺度的差异。这种形态分类法受到线粒体DNA中12RRNA和16SRRNA基因的分子系统发育的支持。也支持those分子数据，即四个属组成的进化枝，并被认为是单属的。在角膜细胞形状中，根据分子生物学获得以下系统发育，即Ashinkailepas属是四个属中最原始的，vulcanolepas属属于Ashinkailepas属，然后从leucolepas和neolepas属属属属于Southus collacific collectepas.in southec.in kinkail collectepas。后弧盆地是最原始的，然后进化为西北太平洋地区的两个冲绳槽和Myojin Knoll。这种系统发育关系得到了从西南到西北太平洋属的散布。（1）的案例，从西南太平洋到西太平洋的散布在（2）的情况下，并从西南太平洋到东太平洋和印度洋的散布（3）。