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<p>The loggerhead sea turtle (<i>Caretta caretta</i>) is widely distributed in the coastal waters of Brazil; however, reports on fungal diversity in nests and eggs remain limited. This study investigated the occurrence of fungi from the genera <i>Aspergillus</i>, <i>Penicillium</i>, and <i>Talaromyces</i> in unhatched eggs and nest sand along the coast of Ipojuca, Pernambuco, Brazil. Samples were collected from three nests on the beaches of Porto de Galinhas, Muro Alto, and Maracaípe. Fungi were isolated by suspending the samples in 0.1% peptone water and plating them on various culture media with chloramphenicol. A total of 207 isolates were obtained, of which 135 (65.2%) belonged to <i>Aspergillus</i> (27.04%), <i>Penicillium</i> (32.84%), and <i>Talaromyces</i> (5.31%). In the genus <i>Penicillium</i>, 11 species were detected, including two new species, <i>P. carettae</i> sp. nov. and <i>P. flavotestudinum</i> sp. nov., described based on their distinctive morphological features and phylogenetic position. Notes on these new species are provided. Eight species were identified within <i>Aspergillus</i> (<i>A. flavus</i>, <i>A. hortae</i>, <i>A. insulicola</i>, <i>A. niger</i>, <i>A. sydowii</i>, <i>A. tamarii, A. terreus</i>, and <i>A. unguis</i>) and four within <i>Talaromyces</i> (<i>T. albobiverticillius</i>, <i>T. alveolaris</i>, <i>T. pigmentosus</i>, and <i>T. wortmannii</i>). Species such as <i>A. sydowii</i> and <i>P. citrinum</i> were abundant in both eggs and sand, while all <i>Talaromyces</i> species were exclusively found inside the eggs. For the first time, 19 species were reported from sea turtle nests. This study represents the first investigation in Brazil focusing on fungi from <i>C. caretta</i> nests, contributing to the understanding of <i>Aspergillus</i>, <i>Penicillium</i>, and <i>Talaromyces</i> diversity in tropical ecosystems.</p>

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Aspergillus, Penicillium, and Talaromyces from the sand and eggs of Caretta caretta Linnaeus 1758 nests in Northeastern Brazil with the description of two new species

  • 期刊论文

  • 发表日期：

    2025年10月4日

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  • Gabriel da Silva Ferreira,
  • Maria Betânia Melo de Oliveira,
  • Joana Cavalcante de Moura,
  • Cristina Maria de Souza-Motta,
  • Valdir de Queiroz Balbino,
  • Vivian Chimendes da Silva Neves,
  • Neiva Tinti de Oliveira,
  • Jos Houbraken,
  • Renan do Nascimento Barbosa

摘要

The loggerhead sea turtle (Caretta caretta) is widely distributed in the coastal waters of Brazil; however, reports on fungal diversity in nests and eggs remain limited. This study investigated the occurrence of fungi from the genera Aspergillus, Penicillium, and Talaromyces in unhatched eggs and nest sand along the coast of Ipojuca, Pernambuco, Brazil. Samples were collected from three nests on the beaches of Porto de Galinhas, Muro Alto, and Maracaípe. Fungi were isolated by suspending the samples in 0.1% peptone water and plating them on various culture media with chloramphenicol. A total of 207 isolates were obtained, of which 135 (65.2%) belonged to Aspergillus (27.04%), Penicillium (32.84%), and Talaromyces (5.31%). In the genus Penicillium, 11 species were detected, including two new species, P. carettae sp. nov. and P. flavotestudinum sp. nov., described based on their distinctive morphological features and phylogenetic position. Notes on these new species are provided. Eight species were identified within Aspergillus (A. flavus, A. hortae, A. insulicola, A. niger, A. sydowii, A. tamarii, A. terreus, and A. unguis) and four within Talaromyces (T. albobiverticillius, T. alveolaris, T. pigmentosus, and T. wortmannii). Species such as A. sydowii and P. citrinum were abundant in both eggs and sand, while all Talaromyces species were exclusively found inside the eggs. For the first time, 19 species were reported from sea turtle nests. This study represents the first investigation in Brazil focusing on fungi from C. caretta nests, contributing to the understanding of Aspergillus, Penicillium, and Talaromyces diversity in tropical ecosystems.