Seasonal habitat utilisation and morphological characteristics of Chamaeleo dilepis on Telperion Nature Reserve, Mpumalanga, South Africa

IF 0.8 4区 生物学 Q3 ZOOLOGY African Journal of Herpetology Pub Date : 2020-07-02 DOI:10.1080/21564574.2020.1798290
T. L. O'Donoghue, K. Slater, L. Brown
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引用次数: 1

Abstract

ABSTRACT Limited information on the habitat utilisation and seasonal activity of flap-necked chameleons (Chamaeleo dilepis) is available. We investigated habitat utilisation, seasonal distribution, and sexual dimorphism of C. dilepis on Telperion Nature Reserve (a privately protected natural area) in South Africa. Seven broad plant habitat units were surveyed for one year, which included a wet and a dry season. Plant species richness and species diversity, woody plant densities and canopy cover were recorded and analysed in each of the habitat units. Location, sex, age class and morphological measurements were recorded for located chameleons. Gravid adult females were found to be significantly heavier and larger than adult males, but no differences were found in size or mass for subadults. The occurrence of hatchlings was significantly influenced by rainfall, whereas minimum temperature had a significant influence on the occurrence of adults and subadults. Hatchlings occurred from mid-December to March in habitats associated with high shrub and grass canopy cover and low plant species diversity. Subadults were located from mid-March to the end of May in woody habitats and adults were located from the end of October until the end of May. Subadult and adult chameleons preferred dense woodland with high tree canopy cover and rockiness with high plant species diversity. The results of this study suggest that C. dilepis on Telperion have seasonal habits influenced by rainfall, minimum temperature and habitat structure.
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南非普马兰加省Telperion自然保护区dilepis变色龙的季节生境利用及形态特征
摘要:关于斑颈变色龙(Chamaeleo dilipis)栖息地利用和季节活动的信息有限。我们调查了南非Telperion自然保护区(一个私人保护的自然区)的C.dilopis的栖息地利用、季节分布和两性异形。对七个广泛的植物栖息地单元进行了为期一年的调查,其中包括雨季和旱季。记录并分析了每个栖息地单元的植物物种丰富度和物种多样性、木本植物密度和冠层覆盖率。记录被定位变色龙的位置、性别、年龄等级和形态测量。研究发现,怀孕的成年雌性比成年雄性更重、更大,但亚成年雌性在大小或质量上没有差异。幼鱼的发生受到降雨的显著影响,而最低温度对成虫和亚成虫的发生有显著影响。孵化发生在12月中旬至3月,栖息地的灌木和草地覆盖率高,植物物种多样性低。亚成体在3月中旬至5月底位于木本栖息地,成体在10月底至5月下旬位于。亚成体和成体变色龙更喜欢树冠覆盖率高、岩石多、植物物种多样性高的茂密林地。研究结果表明,Telperion上的C.dilipis具有受降雨量、最低温度和栖息地结构影响的季节性习性。
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来源期刊
CiteScore
3.00
自引率
6.70%
发文量
15
审稿时长
>12 weeks
期刊介绍: African Journal of Herpetology (AJH) serves as an outlet for original research on the biology of African amphibians and reptiles. AJH is an interdisciplinary journal that publishes original articles and reviews from diverse fields and disciplines, such as conservation, phylogenetics, evolution, systematics, performance, physiology, ecology, behavioural ecology, ethology, and morphology. The Journal publishes two issues a year. There are no page charges .
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