A molecular and ecological study of Macracanthorhynchus ingens (von Linstow, 1879) (Acanthocephala: Archiacanthocephala), in its paratenic and definitive hosts in southeastern Mexico and the Eastern USA

• DOI: 10.1007/s11230-023-10104-5
• Publication Date: 2023-06-20T05:01:42Z
• Authors: Mirza Patricia Or...; Yanet Velázquez-U...; Ana Lucia Sereno-...; Michael B. Harvey; Martín García-Varela
• Keywords: Animal ecology; Paratenic; Acanthocephala

Abstract The acanthocephalan Macracanthorhynchus ingens (von Linstow 1879) (Acanthocephala: Archiacanthocephala) is a parasite that infects the gut of carnivores (racoons, coyotes, wolves, foxes, badgers, skunks, opossum, mink and bears) as an adult body cavity lizards, snakes, frogs cystacanth in Americas. In this study, adults cystacanths M. from southeastern Mexico southern Florida, USA, were identified morphologically by having cylindrical proboscis armed with 6 rows hooks each hooks. Hologenophores used to sequence small (SSU) large (LSU) subunits ribosomal DNA cytochrome c oxidase subunit 1 ( cox ) mitochondrial DNA. Phylogenetic analysis new SSU LSU sequences placed them clade other available GenBank . tree showed nine six previously published USA form intraspecific genetic divergence among isolates Americas ranged 0 2%, combination phylogenetic trees confirmed belonged same species. haplotype network inferred 15 revealed 10 haplotypes separated few substitutions. Rio Grande Leopard Frogs Vaillant´s harbored low prevalence, 28% 37% respectively, Mexico. Brown Basilisks, invasive lizard had high values 92% 93% males females, respectively. Females more than (0–39 vs 0–21) for unknown reasons may, however, be related ecological differences.