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<p>Studies focusing on the parasitic fauna and ecology of specific seabird species, such as <i>Calonectris borealis</i>, are relatively scarce in the scientific literature. In this context, the present study evaluates the ecology of both ectoparasites and endoparasites in 174 <i>C. borealis</i> stranded along the northeastern coast of Brazil, contributing to the understanding of parasite diversity and its interactions with this Procellariiform species. During the necropsies of the carcasses, ectoparasites, such as lice, and endoparasites, such as helminths, were collected, totaling 9,836 parasites. Of the total, 67.82% of the birds had lice, and 99.43% presented with helminths. Lice accounted for 16.28% of the total, with eight taxa identified: Four Philopteridae - <i>Saemundsonia peusi</i>, <i>Naubates</i> sp., <i>Pectinopygus occidentalis</i>, and <i>Halipeurus abnormis</i>; Four Menoponidae - <i>Austromenopon echinatum</i>, <i>Austromenopon</i> sp., <i>Colpocephalum</i> sp., and <i>Ancistrona vagelli</i>. Helminths represented 82.73%, with six taxa: The nematodes <i>Seuratia shipleyi</i>, <i>Contracaecum</i> sp., <i>Eulimdana</i> sp., and <i>Contracaecum pelagicum</i>; The trematode <i>Renicola</i> sp.; and the cestode <i>Tetrabothrius</i> sp. A significant difference in helminth parasitism was observed between female and male <i>C. borealis</i>, with males exhibiting a higher parasite load compared to females. This study records the first occurrence of the lice <i>Colpocephalum</i> sp., <i>P. occidentalis</i>, <i>Naubates</i> sp., and <i>A. vagelli</i>, as well as the helminths <i>Tetrabothrius</i> sp., <i>Eulimdana</i> sp., and <i>Renicola</i> sp. in <i>C. borealis</i>. Additionally, it represents the greatest species richness of lice and helminths ever reported for this Procellariiform species.</p>

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The parasitic fauna of Cory’s shearwater or bobo-grande (Procellariiformes: Calonectris borealis) stranded on the northeastern coast of Brazil

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • André Mota Alves,
  • Larissa Mello Figueiredo,
  • Rayanne Beatriz de França Oliveira,
  • Tamiris dos Santos Rodrigues,
  • Sarah Raquel Jesus Santos Simões,
  • Iara Gama de Medeiros,
  • Elaine Knupp de Brito,
  • Jociery Einhardt Vergara Parente,
  • Marcillo Altoé Boldrini,
  • Victor Fernando Santana Lima,
  • João Carlos Gomes Borges

摘要

Studies focusing on the parasitic fauna and ecology of specific seabird species, such as Calonectris borealis, are relatively scarce in the scientific literature. In this context, the present study evaluates the ecology of both ectoparasites and endoparasites in 174 C. borealis stranded along the northeastern coast of Brazil, contributing to the understanding of parasite diversity and its interactions with this Procellariiform species. During the necropsies of the carcasses, ectoparasites, such as lice, and endoparasites, such as helminths, were collected, totaling 9,836 parasites. Of the total, 67.82% of the birds had lice, and 99.43% presented with helminths. Lice accounted for 16.28% of the total, with eight taxa identified: Four Philopteridae - Saemundsonia peusi, Naubates sp., Pectinopygus occidentalis, and Halipeurus abnormis; Four Menoponidae - Austromenopon echinatum, Austromenopon sp., Colpocephalum sp., and Ancistrona vagelli. Helminths represented 82.73%, with six taxa: The nematodes Seuratia shipleyi, Contracaecum sp., Eulimdana sp., and Contracaecum pelagicum; The trematode Renicola sp.; and the cestode Tetrabothrius sp. A significant difference in helminth parasitism was observed between female and male C. borealis, with males exhibiting a higher parasite load compared to females. This study records the first occurrence of the lice Colpocephalum sp., P. occidentalis, Naubates sp., and A. vagelli, as well as the helminths Tetrabothrius sp., Eulimdana sp., and Renicola sp. in C. borealis. Additionally, it represents the greatest species richness of lice and helminths ever reported for this Procellariiform species.