Ectoparasites of wild rodents in forest sites invaded and uninvaded by Maesopsis eminii in Amani nature forest reserve, Tanzania

IF 2 3区医学 Q3 ECOLOGY

International Journal for Parasitology-Parasites and Wildlife Pub Date : 2024-03-31 DOI:10.1016/j.ijppaw.2024.100932

Leticia J. Musese , Amani S. Kitegile , Charles J. Kilawe

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Abstract

Parasites are important component of communities in a forest ecosystem with profound effects on trophic interactions such as food web. Modification of the forest structure (e.g. changes in species composition and abundance of key species) can have a strong impact on the occurrence, diversity, and abundance of parasites, with subsequent repercussions for ecosystem functioning. In this study, we compared the occurrence and abundance of wild rodents’ ectoparasites from forest sites invaded and uninvaded by an invasive tree, Maesopsis eminii in Amani Nature Forest Reserve, Tanzania. Three large plots (40 m × 100 m) were randomly established in each forest sites invaded and uninvaded by M. eminii. In each plot, 50 Sherman traps were systematically placed at 10 m interval for capturing wild rodents through a capture-mark-recapture technique. Wilcox rank sum test was used to compare for differences in the abundance of infested rodents and ectoparasites between the invaded and uninvaded forest sites. A total of 297 individual rodents were captured and screened for ectoparasites, including 174 rodents from uninvaded forest site and 123 rodents from invaded forest site. The number of infested rodents were significantly (W = 8592, P < 0.001) greater in uninvaded forest site (66.27%) than in the invaded forest site (36.2%). Furthermore, a significant greater number of Echinolaelaps echidninus (W = 1849, P < 0.01) and Dinopsyllus ellobius (W = 2800.5, P < 0.05) ectoparasites were found in uninvaded as compared to the invaded forest sites. The results of this study suggest that the invasion and dominance by, M. eminii in Amani Nature Reserve has created unfavorable conditions for rodents and ectoparasites and therefore impacting the diversity and function of the forest ecosystem. We recommend prevention of further introduction of the M. eminii outside their natural range and mitigating the impact of the established M. eminii in Amani Forest Nature Reserve.

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坦桑尼亚阿马尼自然森林保护区被啮齿目啮齿类动物入侵和未被入侵森林中野生啮齿类动物的体外寄生虫

寄生虫是森林生态系统中群落的重要组成部分，对食物网等营养相互作用具有深远影响。森林结构的改变（如物种组成和主要物种丰度的变化）会对寄生虫的发生、多样性和丰度产生很大影响，进而对生态系统的功能产生影响。在这项研究中，我们比较了坦桑尼亚阿马尼自然森林保护区被入侵树种Maesopsis eminii入侵和未被入侵的森林中野生啮齿动物体外寄生虫的发生率和丰度。在被Maesopsis eminii入侵和未被Maesopsis eminii入侵的林地中，每个林地随机建立三个大小区（40 m × 100 m）。在每个小区内，每隔 10 米系统地放置 50 个谢尔曼捕鼠器，通过捕捉-标记-再捕捉技术捕捉野生啮齿动物。采用Wilcox秩和检验比较入侵林地和未被入侵林地之间啮齿动物和体外寄生虫数量的差异。共捕获 297 只啮齿动物并进行了体外寄生虫检测，其中 174 只啮齿动物来自未受侵扰的林地，123 只啮齿动物来自受侵扰的林地。未受侵扰林地的受侵扰啮齿动物数量（66.27%）明显高于受侵扰林地（36.2%）（W = 8592，P < 0.001）。此外，与入侵林地相比，未入侵林地的 Echinolaelaps echidninus (W = 1849, P < 0.01) 和 Dinopsyllus ellobius (W = 2800.5, P < 0.05) 体外寄生虫数量明显较多。这项研究的结果表明，M. eminii 在阿马尼自然保护区的入侵和优势地位为啮齿动物和体外寄生虫创造了不利条件，因此影响了森林生态系统的多样性和功能。我们建议防止在啮齿目啮齿动物的自然分布区之外进一步引入啮齿目啮齿动物，并减轻已在阿马尼森林自然保护区建立的啮齿目啮齿动物的影响。

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来源期刊

International Journal for Parasitology-Parasites and Wildlife Medicine-Infectious Diseases

CiteScore

3.80

自引率

5.60%

发文量

113

审稿时长

45 days

期刊介绍： The International Journal for Parasitology: Parasites and Wildlife (IJP-PAW) publishes the results of original research on parasites of all wildlife, invertebrate and vertebrate. This includes free-ranging, wild populations, as well as captive wildlife, semi-domesticated species (e.g. reindeer) and farmed populations of recently domesticated or wild-captured species (e.g. cultured fishes). Articles on all aspects of wildlife parasitology are welcomed including taxonomy, biodiversity and distribution, ecology and epidemiology, population biology and host-parasite relationships. The impact of parasites on the health and conservation of wildlife is seen as an important area covered by the journal especially the potential role of environmental factors, for example climate. Also important to the journal is ''one health'' and the nature of interactions between wildlife, people and domestic animals, including disease emergence and zoonoses.