Behavioural and molecular evidence for specific status of light and dark morphs of the Herald Petrel Pterodroma heraldica
Behavioural and molecular evidence for specific status of light and dark morphs of the Herald Petrel Pterodroma heraldica
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先驱海燕 (Herald Petrel) 的浅色和深色形态特定状态的行为和分子证据
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Rowe
中科院分区：
文献类型：
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作者：
M. Brooke;G. Rowe
先驱海燕Pterodroma heraldica有一个广泛的亚热带繁殖范围横跨太平洋的宽度。它发生在黑暗和光明的变种，并在大多数繁殖殖民地，后者是更多的。然而，在中太平洋皮特凯恩群岛之一的亨德森岛上，深色变体数量更多。在亨德森岛的一项实地研究中，我们发现了浅色和深色先驱海燕之间生殖隔离的证据。变种人繁殖求偶。它们也倾向于在岛上的不同地方繁殖（深色鸟更靠近海岸），在稍微不同的季节繁殖（深色鸟主要在南方的冬天，浅色鸟全年都更均匀），发出不同的叫声。总之，这些数据有力地表明，变种是不同的物种。线粒体基因组细胞色素B基因的307个碱基对区域的序列数据支持这一结论。当鸟类的变种从亨德森和轻变种从杜西环礁（345公里以西的亨德森）进行采样，五个单倍型仅限于轻先驱海燕：他们没有发生在黑暗的鸟类。相比之下，三个单倍型仅限于亨德森岛上的深色先驱海燕。因此，这两种变体的单倍型是相互排斥的，进一步表明它们之间的生殖隔离。我们建议，白腹形式应保留名称先驱海燕P. heraldica，而黑腹形式应给予特定的地位，作为亨德森海燕Pterodroma atrata（马修斯1912）。“atrata”这个名字来源于Solander在库克第一次航行时所写的描述。圆岛海燕Pterodroma arminjoniana的分子数据证实了这种形式和纹章之间的密切关系。然而，arminjoniana和atrata没有共同的细胞色素B区序列的研究。
The Herald Petrel Pterodroma heraldica has an extensive subtropical breeding range across the width of the Pacific Ocean. It occurs in dark and light morphs, and, at most breeding colonies, the latter is more numerous. However, on Henderson Island, one of the Pitcairn Islands of the Central Pacific, the dark morph is more numerous. During a field study at Henderson Island, we found evidence of reproductive isolation between light and dark Herald Petrels. The morphs bred and courted assortatively. They also tended to breed in different parts of the island (dark birds nearer the coast) and at slightly different seasons (dark birds mostly in the austral winter, light birds more evenly throughout the year) and uttered different calls. Together, these data strongly suggested that the morphs are distinct species. This conclusion was supported by sequence data from a 307-base pair region of the cytochrome b gene of the mitochondrial genome. When birds of both morphs from Henderson and light morphs from Ducie Atoll (345 km west of Henderson) were sampled, five haplotypes were restricted to light Herald Petrels: they did not occur in dark birds. In contrast, three haplotypes were restricted to dark Herald Petrels on Henderson Island. Thus, the haplotypes of the two morphs were mutually exclusive, further indicating reproductive isolation between them. We propose that the white-bellied form should retain the name Herald Petrel P. heraldica, while the dark-bellied form should be granted specific status as the Henderson Petrel Pterodroma atrata (Mathews 1912). The name atrata derives from a description written by Solander on Cook's first voyage. Molecular data from Round Island Petrels Pterodroma arminjoniana confirmed the close relationship between this form and heraldica. However, arminjoniana and atrata did not share sequences for the cytochrome b region studied.