| 翻訳と辞書 |
| largetooth sawfish ： ウィキペディア英語版 |
largetooth sawfish
The largetooth sawfish (''Pristis microdon''), also known as the Leichhardt's sawfish or freshwater sawfish, is a sawfish of the family Pristidae, found in shallow Indo-West Pacific oceans between latitudes 11° N and 39° S. As its relatives, it also enters freshwater. This species reaches a length of up to . Reproduction is ovoviviparous. Recent evidence strongly suggests ''P. microdon'' is synonymous with ''P. pristis''.〔Faria, V. V.; McDavitt, M. T.; Charvet, P.; Wiley, T. R.; Simpfendorfer, C. A.; Naylor, G. J. P. (2013). ''Species delineation and global population structure of Critically Endangered sawfishes (Pristidae).'' Zoological Journal of the Linnean Society 167: 136–164. doi:10.1111/j.1096-3642.2012.00872.x Retrieved 26 August 2013.〕 Consequently, the IUCN removed ''P. microdon'' from their list, instead recognizing it as part of the critically endangered ''P. pristis''.
==Taxonomy==
Considerable taxonomic confusion has surrounded this species. It is part of the ''Pristis pristis'' species complex, which also includes ''P. perotteti''. ''P. microdon'' has sometimes been considered synonymous with ''P. perotteti'', and uncertainty exists over what species the scientific name ''P. microdon'' really belong to (the original description lacked a type locality).
Recent evidence strongly suggests the three are conspecific (in which case ''P. microdon'' and ''P. perotteti'' are synonyms of ''P. pristis''), as morphological and genetic differences are lacking.〔 Three main clades based on NADH-2 genes were evident (Atlantic, Indo-West Pacific, and East Pacific), but these do not match the distributions claimed for ''P. pristis'' (circumtropical), ''P. microdon'' (Indo-West Pacific) and ''P. perotteti'' (Atlantic and East Pacific) respectively.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「largetooth sawfish」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|