出現紀錄

Antarctic Nemertea

最新版本 由 SCAR - AntOBIS 發佈於 2019年3月19日 SCAR - AntOBIS
發布日期:
2019年3月19日
Published by:
SCAR - AntOBIS
授權條款:
CC-BY 4.0

下載最新版本的 Darwin Core Archive (DwC-A) 資源,或資源詮釋資料的 EML 或 RTF 文字檔。

DwC-A資料集 下載 106 紀錄 在 English 中 (6 KB) - 更新頻率: 有可能更新,但不確知何時
元數據EML檔 下載 在 English 中 (7 KB)
元數據RTF文字檔 下載 在 English 中 (8 KB)

說明

Open-ocean environments provide few obvious barriers to the dispersal of marine organisms. Major currents and/or environmental gradients potentially impede gene flow. One system hypothesized to form an open-ocean dispersal barrier is the Antarctic Polar Front, an area characterized by marked temperature change, deep water, and the high-flow Antarctic Circumpolar current. Despite these potential isolating factors, several invertebrate species occur in both regions, including the broadcast-spawning nemertean worm Parborlasia corrugatus. To empirically test for the presence of an open-ocean dispersal barrier, we sampled P. corrugatus and other nemerteans from southern South America, Antarctica, and the sub-Antarctic islands. Diversity was assessed by analyzing mitochondrial 16S rRNA and cytochrome c oxidase subunit I sequence data with Bayesian inference and TCS haplotype network analysis. Appropriate neutrality tests were also employed. Although our results indicate a single well-mixed lineage in Antarctica and the sub-Antarctic, no evidence for recent gene flow was detected between this population and South American P. corrugatus. Thus, even though P. corrugatus can disperse over large geographical distances, physical oceanographic barriers (i.e. Antarctic Polar Front and Antarctic Circumpolar Current) between continents have likely restricted dispersal over evolutionary time. Genetic distances and haplotype network analysis between South American and Antarctic/ sub-Antarctic P. corrugatus suggest that these two populations are possibly two cryptic species.

資料紀錄

此資源出現紀錄的資料已發佈為達爾文核心集檔案(DwC-A),其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 106 筆紀錄。

此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本,以便利追蹤其隨時間的變更。

版本

以下的表格只顯示可公開存取資源的已發布版本。

如何引用

研究者應依照以下指示引用此資源。:

Thornhill et al . 2008. Mol. Ecol. 17 (23), 5104-5117

權利

研究者應尊重以下權利聲明。:

此資料的發布者及權利單位為 SCAR - AntOBIS。 This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF 註冊

此資源已向GBIF註冊,並指定以下之GBIF UUID: 7b967e82-f762-11e1-a439-00145eb45e9a。  SCAR - AntOBIS 發佈此資源,並經由Ocean Biodiversity Information System同意向GBIF註冊成為資料發佈者。

關鍵字

Occurrence

外部資料

此資源尚有其他格式可用

聯絡資訊

資源建立者:
-

Rachel Grant
Principal Lecturer
Hartpury College

可回覆此資源相關問題者:

Rachel Grant
Principal Lecturer
Hartpury College
GB

元數據填寫者:
-

Anton Van de Putte
Project Manager
Antarctic Biodiversity Information Facility (ANTABIF)
http://data.biodiversity.aq

地理涵蓋範圍

PS, Antarctica

界定座標範圍 緯度南界 經度西界 [-70, -75], 緯度北界 經度東界 [-50, -50]

分類群涵蓋範圍

urn:lsid:marinespecies.org:taxname:152391

Phylum Nemertea [ribbon worms]

時間涵蓋範圍

起始日期 2008-01-01

額外的詮釋資料

marine, harvested by iOBIS

替代的識別碼 7b967e82-f762-11e1-a439-00145eb45e9a
https://ipt.biodiversity.aq/resource?r=rachel_antarctic_nemertea