Parasites of Crocodylus moreletii (Reptilia: Crocodylidae) Across Habitats with Different Levels of Anthropogenic Disturbance in Southeastern Mexico.

IF 2.2 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Ecohealth Pub Date : 2025-09-27 DOI:10.1007/s10393-025-01759-1

Alberto Castillo-Contreras, Mauricio González-Jáuregui, Dalia Lázaro-Bello, Amelia Paredes-Trujillo

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Abstract

Between July 2021 and July 2022, a cross-sectional parasitological survey was conducted on 97 free-ranging Crocodylus moreletii individuals across four Mexican states: Campeche, Quintana Roo, Yucatán, and Tabasco. Sampling was conducted out at 12 sites representing varying degrees of anthropogenic disturbance, categorized as conserved, moderately disturbed, and highly disturbed habitats. Parasitological analysis identified seven nematode taxa: Contracaecum sp. type 1, Contracaecum sp. type 2, Terranova crocodili, Micropleura sp., Dujardinascaris helicina, Eustrongylides sp., and Goezia nonipapillata, belonging to four families: Ascarididae, Anisakidae, Micropleuridae, and Dioctophymidae. The most prevalent species were Contracaecum sp. type 1 (51%), followed by Contracaecum sp. type 2 (41%) and D. helicina (28%), while Eustrongylides sp. showed the lowest prevalence (4.1%). Parasite composition differed significantly among sites with varying levels of anthropogenic disturbance (PERMANOVA, p < 0.05). Contracaecum sp. type 1 reached a prevalence of 100% in moderately disturbed habitats. Additionally, Contracaecum sp. type 2, D. helicina, and T. crocodili exhibited moderate to high prevalence across all surveyed localities, irrespective of habitat disturbance levels. Eustrongylides sp. and G. nonipapillata were found exclusively in urban environments. These findings highlight the importance of monitoring host-parasite dynamics across environmental gradients of anthropogenic impact to better assess zoonotic risks and promote both public and wildlife health.

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墨西哥东南部不同程度人为干扰下的大鳄寄生（爬行动物目：大鳄科）

在2021年7月至2022年7月期间，对墨西哥四个州（坎佩切州、金塔纳罗奥州、Yucatán和塔巴斯科州）的97只自由放生的莫雷蒂鳄进行了横断面寄生虫学调查。在代表不同程度人为干扰的12个地点进行了采样，分为保护、中度干扰和高度干扰生境。寄生虫学分析鉴定出7个线虫类群：1型缩腹虫、2型缩腹虫、Terranova crocodili、Micropleura sp.、Dujardinascaris helicina、Eustrongylides sp.和nonipapillata，隶属于4科：蛔虫科、异翅虫科、微胸膜虫科和双翅虫科。以1型包虫虫最多（51%），其次为2型包虫虫（41%）和螺旋藻包虫虫（28%），全圆内酯包虫虫（4.1%）发病率最低。在不同人为干扰水平的地点，寄生虫组成差异显著(PERMANOVA, p

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来源期刊

Ecohealth 环境科学-环境科学

CiteScore

4.50

自引率

4.00%

发文量

审稿时长

>24 weeks

期刊介绍： EcoHealth aims to advance research, practice, and knowledge integration at the interface of ecology and health by publishing high quality research and review articles that address and profile new ideas, developments, and programs. The journal’s scope encompasses research that integrates concepts and theory from many fields of scholarship (including ecological, social and health sciences, and the humanities) and draws upon multiple types of knowledge, including those of relevance to practice and policy. Papers address integrated ecology and health challenges arising in public health, human and veterinary medicine, conservation and ecosystem management, rural and urban development and planning, and other fields that address the social-ecological context of health. The journal is a central platform for fulfilling the mission of the EcoHealth Alliance to strive for sustainable health of people, domestic animals, wildlife, and ecosystems by promoting discovery, understanding, and transdisciplinarity. The journal invites substantial contributions in the following areas: One Health and Conservation Medicine o Integrated research on health of humans, wildlife, livestock and ecosystems o Research and policy in ecology, public health, and agricultural sustainability o Emerging infectious diseases affecting people, wildlife, domestic animals, and plants o Research and practice linking human and animal health and/or social-ecological systems o Anthropogenic environmental change and drivers of disease emergence in humans, wildlife, livestock and ecosystems o Health of humans and animals in relation to terrestrial, freshwater, and marine ecosystems Ecosystem Approaches to Health o Systems thinking and social-ecological systems in relation to health o Transdiiplinary approaches to health, ecosystems and society.