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<p>Ectoparasitic infestations by biting midges and water mites on various mosquito species were examined in cattle sheds of West Bengal, India, during the pre- and post-monsoon seasons from 2022 to 2024. A total of 5,381 adult mosquitoes representing 12 species under 4 genera were collected using a mechanical aspirator. Among them, 3 <i>Anopheles hyrcanus</i> and 5 <i>Culex tritaeniorhynchus</i> were found parasitized by the biting midge <i>Culicoides anophelis</i>, while 170 individuals across 6 species, i.e., <i>An. hyrcanus</i>, <i>Cx. tritaeniorhynchus</i>, <i>Cx. vishnui</i>, <i>Mansonia annulifera</i>, <i>Ma. indiana</i>, and <i>Ma. uniformis</i> were found parasitized by the water mite <i>Arrenurus</i> sp. Water mites were not found on individuals of <i>An. barbirostris</i>, <i>An. subpictus</i>, <i>An. annularis</i>, <i>Armigeres subalbatus</i>, <i>Cx. quinquefasciatus</i>, and <i>Cx. gelidus.</i> A total of 385 <i>Arrenurus</i> mites were recovered with an intensity of 2.26 mites per infected mosquito (95% CI: 2.04–2.49). In the pre-and post-monsoon seasons, the prevalence of mite infestation was 1.38% (95% CI: 0.97–1.97) and 4.36% (95% CI: 3.71–5.13), respectively. The results of Jacobs’ selectivity index showed that <i>Arrenurus</i> sp. had the highest host electivity for <i>Ma. annulifera</i> compared with other mosquito species. The abdominal region of mosquitoes was the most favoured attachment site of <i>Arrenurus</i> mites over other anatomical areas. The findings of this study are expected to provide important ecological insights into host-ectoparasite associations, seasonal patterns, and host specificity of <i>Cu. anophelis</i> and <i>Arrenurus</i> sp. with mosquito communities in livestock-associated habitats.</p>

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Prevalence and host association of mosquito ectoparasites in cattle sheds of West Bengal, India

  • 期刊论文

  • 发表日期：

    2026年7月23日

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  • Susobhan Datta Mudi,
  • Pranesh Paul,
  • Susmita Roy,
  • Debjit Mondal,
  • Goutam K Saha,
  • Gautam Aditya

摘要

Ectoparasitic infestations by biting midges and water mites on various mosquito species were examined in cattle sheds of West Bengal, India, during the pre- and post-monsoon seasons from 2022 to 2024. A total of 5,381 adult mosquitoes representing 12 species under 4 genera were collected using a mechanical aspirator. Among them, 3 Anopheles hyrcanus and 5 Culex tritaeniorhynchus were found parasitized by the biting midge Culicoides anophelis, while 170 individuals across 6 species, i.e., An. hyrcanus, Cx. tritaeniorhynchus, Cx. vishnui, Mansonia annulifera, Ma. indiana, and Ma. uniformis were found parasitized by the water mite Arrenurus sp. Water mites were not found on individuals of An. barbirostris, An. subpictus, An. annularis, Armigeres subalbatus, Cx. quinquefasciatus, and Cx. gelidus. A total of 385 Arrenurus mites were recovered with an intensity of 2.26 mites per infected mosquito (95% CI: 2.04–2.49). In the pre-and post-monsoon seasons, the prevalence of mite infestation was 1.38% (95% CI: 0.97–1.97) and 4.36% (95% CI: 3.71–5.13), respectively. The results of Jacobs’ selectivity index showed that Arrenurus sp. had the highest host electivity for Ma. annulifera compared with other mosquito species. The abdominal region of mosquitoes was the most favoured attachment site of Arrenurus mites over other anatomical areas. The findings of this study are expected to provide important ecological insights into host-ectoparasite associations, seasonal patterns, and host specificity of Cu. anophelis and Arrenurus sp. with mosquito communities in livestock-associated habitats.