Wild leucistic Risso’s dolphins (Grampus griseus) in the Azores

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY Ciencias Marinas Pub Date : 2023-06-30 DOI:10.7773/cm.y2023.3341

J. Gomes-Pereira, S. Vieira, G. Dionísio

引用次数: 0

Abstract

Leucism has been reported in at least 14 cetacean species, including Risso’s dolphin (Grampus griseus). Risso’s dolphins with abnormal pigmentation were sighted and photographed north of Faial Island, Azores Archipelago, in 6 separate events between 2020 and 2023. In 2020, a calf and a juvenile/subadult were observed within a group of over 100 individuals. A leucistic calf with pale skin and dark eyes was observed in 2021, 2022, and 2023 in the same area followed by the same adult within a pod of about 12 individuals, including 3 juveniles, all with normal coloration. This is the first report of wild leucistic Risso’s dolphins in the Atlantic, which could be of interest in future local population and hypopigmentation studies on a dolphin species known to become completely white with age.

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亚速尔群岛的野生白海豚

据报道，至少有14种鲸目动物出现白化现象，其中包括里索海豚（Grampus griseus）。2020年至2023年间，在亚速尔群岛法亚尔岛以北的6次独立活动中，人们看到并拍摄到了色素沉着异常的里索海豚。2020年，在一个由100多人组成的小组中观察到一只幼崽和一只幼年/亚成年幼崽。2021年、2022年和2023年，在同一区域观察到一只皮肤苍白、眼睛黝黑的亮氨酸小牛，随后在约12只个体中观察到同一只成年小牛，其中包括3只幼年小牛，所有个体颜色正常。这是第一份关于大西洋野生白海豚的报告，这可能对未来当地种群和对一种已知随着年龄增长而完全变白的海豚物种的色素沉着不足研究感兴趣。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ciencias Marinas 生物-海洋与淡水生物学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.