Dietary niche of the endangered Psychedelic Rock Gecko (Cnemaspis psychedelica) in southern Vietnam

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-13 DOI:10.1163/15707563-bja10130

H. Ngo, T. Nguyen, Khoi VU Nguyen, Thomas Ziegler

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Abstract

The Psychedelic Rock Gecko (Cnemaspis psychedelica), is a species endemic to southernmost Vietnam. It was recently assessed as Endangered in the IUCN Red List and also included in the CITES Appendix I, due to anthropogenic threats such as habitat degradation and over-collection for the pet trade. To protect wild populations and the natural habitat of this species, knowledge of its demography and ecology is essential to implement fitting conservation measures. In this study, we conducted field surveys on Hon Khoai Island, Ca Mau Province, southern Vietnam in both dry and wet seasons, and obtained food contents of 114 individuals of C. psychedelica by water-flushing the stomach without sacrificing them. Consequently, 685 invertebrate items were identified, belonging to 24 different prey types of 20 invertebrate orders, as well as flatworms, snails and plant parts. Araneae, Blattodea, Hymenoptera and Isoptera were identified as the most important prey of C. psychedelica, among which Araneae accounted for the highest percentage, and thus the highest importance index, during the dry season and Hymenoptera during the wet season. There was a large overlap in the trophic niche between the two seasons, and between males and females of C. psychedelica. This study shows that not only suitable habitat but also a particular food spectrum is a requirement for the species and this, in addition, is important to optimize conservation breeding programs.

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越南南部濒危迷幻岩壁虎（Cnemaspis psychedelica）的食物生态位

迷幻岩壁虎（Cnemaspis psychedelica）是越南最南端的特有物种。由于栖息地退化和宠物交易过度采集等人为威胁，该物种最近在《世界自然保护联盟红色名录》中被评估为濒危物种，并被列入《濒危野生动植物种国际贸易公约》附录 I。为了保护该物种的野生种群和自然栖息地，了解其人口和生态情况对于采取适当的保护措施至关重要。在本研究中，我们在越南南部金瓯省的Hon Khoai岛进行了旱季和雨季的野外调查，并在不牺牲个体的情况下通过水冲洗胃部获得了114只C. psychedelica的食物内容物。结果，共鉴定出 685 种无脊椎动物，分别属于 20 个无脊椎动物目中的 24 种不同猎物类型，以及扁形虫、蜗牛和植物部分。经鉴定，仙鹤草属（Araneae）、蜚蠊目（Blattodea）、膜翅目（Hymenoptera）和等翅目（Isoptera）是仙鹤草最重要的猎物，其中仙鹤草属（Araneae）在旱季所占比例最高，因此其重要性指数也最高，而膜翅目（Hymenoptera）则在雨季最高。在两个季节之间，以及在雌性和雄性之间，银莲花的营养生态位有很大的重叠。这项研究表明，该物种不仅需要合适的栖息地，还需要特定的食物谱，这对于优化保护繁殖计划也很重要。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.