Ecological characteristics of a recently described, critically endangered gecko species, endemic to Central Highland, Vietnam

IF 0.7 4区生物学 Q4 ZOOLOGY

Tropical Zoology Pub Date : 2020-10-28 DOI:10.4081/tz.2020.71

V. Q. Luu, O. Van, Tuoi Thi Hoang, Thong Pham Van, Olivier Le Duc, Cédric Bordes, B. Leprince, G. Amori, L. Luiselli

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引用次数: 5

Abstract

Gia Lai bent-toed gecko (Cyrtodactylus gialaiensis) was firstly described in 2017, and is an endemic species with very restricted distributional range, estimated to be less than 10 km2 in coffee plantation in Gia Lai province, Central Highland of Vietnam. This species is listed as Critically Endangered (CR) in the IUCN Red List. To date, the natural history of this species is totally unknown. In this paper, we provide the first-of-ever natural history data on this highly threatened gecko species, with emphasis on morphometrics, habitat preferences, thermal ecology, and activity patterns. In 23 days of surveys, we captured 42 C. gialaiensis individuals and recaptured 4 of them. Sex ratio was not skewed from equality and juveniles accounted for 23.8% of the observed individuals. The two sexes did not differ in terms of mean Snout-to-Vent Length, Tail Length and weight, but the adult females had longer head than adult males. Geckos were observed at a mean substratum temperature of 24.2±1°C (n=14), and exhibited a mean body temperature of 29.5±2.5°C (n=14). There was no significant correlation between substratum and body temperatures. Body temperatures were significantly higher than substratum temperatures. The study species exhibited a clearly nocturnal above-ground activity, with main peak occurring between 20:00-21:30 h.

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最近发现的一种越南中部高地特有的极度濒危壁虎物种的生态特征

嘉莱弯趾壁虎(Cyrtodactylus gialaiensis)于2017年首次被发现，是越南中部高原嘉莱省咖啡种植区的特有物种，分布范围非常有限，估计在10平方公里以内。该物种被列为世界自然保护联盟红色名录中的极度濒危物种。迄今为止，这个物种的自然历史是完全未知的。在本文中，我们首次提供了这一高度濒危物种的自然历史数据，重点介绍了形态测量学、栖息地偏好、热生态学和活动模式。在23天的调查中，共捕获贾拉依蚊42只，其中4只被捕获。性别比不存在失衡现象，幼鱼占观察个体的23.8%。两性在平均口鼻长度、尾长和体重方面没有差异，但成年雌性的头比成年雄性长。观察到的壁虎平均底温为24.2±1℃(n=14)，平均体温为29.5±2.5℃(n=14)。基质与体温之间无显著相关性。体温明显高于基质温度。夜间活动明显，夜间活动高峰发生在20:00-21:30 h。

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

Tropical Zoology 生物-动物学

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Tropical Zoology is an international zoological journal publishing original papers in the field of systematics, biogeography, phylogeny, ecology and conservation of all terrestrial and aquatic animal Phyla from tropical and subtropical areas. Only papers with new information, high quality and broad interest are considered. Single species description and checklists are not normally accepted. Review papers are welcome. The journal is owned by the Istituto di Ricerca sugli Ecosistemi Terrestri of the Consiglio Nazionale delle Ricerche, Florence, Italy (CNR-IRET) who performs research into the structure and functioning of aquatic and terrestrial ecosystems, focusing in particular on anthropogenic pressure and global change. The knowledge amassed forms the scientific basis for identifying the most appropriate protective and corrective interventions, and provides support for the bodies entrusted with formulating policies for environmental protection and recovery.