Scholarlink

Purpose <p>This work provides a detailed morphological description of a previously identified but unnamed lineage inside <i>Gnathostoma</i> spp. from Mexico.</p> Methods <p>Specimens of the four-eyed opossum <i>Philader vossi</i> were collected in Tlacotalpan, Veracruz, Mexico. Specimens were examined morphologically using both light microscopy and scanning electron microscopy. Additionally, we generate DNA sequences for the following loci: mitochondrial <i>cox</i>1 and nuclear 5.8S rRNA and ITS-2 and 28S rDNA.</p> Results <p>The new species, <i>Gnathostoma mexicanum</i> n. sp., differs from <i>G. turgidum</i> Stossich, 1902, the common gnathostomid species infecting <i>Didelphis</i> spp. from the Americas, in its smaller body size, fewer teeth on the cuticular spines at anterior half of body, as well as site of infection (pyloric region vs. stomach layers). Host specificity further distinguishes the two species. Additionally, molecular data show that the new species clearly diverges from its congeners.</p> Conclusions <p>This work represents the fourth <i>Gnathostoma</i> species described for Mexican mammals and the eight recorded in the Americas.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A New Neotropical Species of Gnathostoma (Nematoda: Gnathostomatidae) from the Northern Four-Eyed Opossum Philander vossi (Marsupialia)

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月14日

查看全文
  • M. Á. Mosqueda-Cabrera,
  • E. Sánchez-Miranda,
  • L. D. Castillo-Loeza,
  • G. Torres-Carrera,
  • L. García-Prieto

摘要

Purpose

This work provides a detailed morphological description of a previously identified but unnamed lineage inside Gnathostoma spp. from Mexico.

Methods

Specimens of the four-eyed opossum Philader vossi were collected in Tlacotalpan, Veracruz, Mexico. Specimens were examined morphologically using both light microscopy and scanning electron microscopy. Additionally, we generate DNA sequences for the following loci: mitochondrial cox1 and nuclear 5.8S rRNA and ITS-2 and 28S rDNA.

Results

The new species, Gnathostoma mexicanum n. sp., differs from G. turgidum Stossich, 1902, the common gnathostomid species infecting Didelphis spp. from the Americas, in its smaller body size, fewer teeth on the cuticular spines at anterior half of body, as well as site of infection (pyloric region vs. stomach layers). Host specificity further distinguishes the two species. Additionally, molecular data show that the new species clearly diverges from its congeners.

Conclusions

This work represents the fourth Gnathostoma species described for Mexican mammals and the eight recorded in the Americas.