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Cryptic species in a Vulnerable seabird : short-tailed albatross consists of two species
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| Title: | Cryptic species in a Vulnerable seabird : short-tailed albatross consists of two species |
| Authors: | Eda, Masaki Browse this author →KAKEN DB | | Yamasaki, Takeshi Browse this author | | Izumi, Hiroe Browse this author | | Tomita, Naoki Browse this author | | Konno, Satoshi Browse this author | | Konno, Miwa Browse this author | | Murakami, Hayao Browse this author | | Sato, Fumio Browse this author |
| Keywords: | Birds | | Conservation | | Cryptic species | | Short-tailed albatross | | Threatened species |
| Issue Date: | 25-Mar-2021 |
| Publisher: | Inter-Research |
| Journal Title: | Endangered species research |
| Volume: | 43 |
| Start Page: | 375 |
| End Page: | 386 |
| Publisher DOI: | 10.3354/esr01078 |
| Abstract: | The occurrence of cryptic species within a threatened taxon is rare, but where they do occur, understanding species boundaries is essential for planning an effective conservation strategy. The short-tailed albatross Phoebastria albatrus is a Vulnerable seabird that mainly breeds on Torishima and the Senkaku Islands in the western North Pacific. Although it has been tacitly regarded as a single management unit with 2 breeding sites, the species is known to comprise 2 genetically separated populations (Senkaku-type and Torishima-type). However, morphological examination of birds from both populations has not been conducted owing to the difficulty in accessing the Senkaku Islands. In this study, we examined the morphological differences between immigrants from the Senkaku Islands to Torishima (Senkaku-type) and native birds on Torishima (Torishima-type) and found significant differences in morphological characteristics between the 2 bird types. In general, Torishima-type birds were larger than Senkaku-type birds, whereas Senkaku-type birds had relatively longer beaks. Based on the morphological differences found in this study as well as genetic and ecological differences revealed in previous studies, we believe that Senkaku- and Torishima-type birds should be classified as different cryptic species. To the best of our knowledge, this is the first case of cryptic species being identified in a threatened avian species. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/80682 |
| Appears in Collections: | 総合博物館 (The Hokkaido University Museum) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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