首页|Host-parasite interactions in perpetual darkness:Macroparasite diversity in the cavefish Astyanax mexicanus

Host-parasite interactions in perpetual darkness:Macroparasite diversity in the cavefish Astyanax mexicanus

扫码查看
原文链接
  • 万方数据
  • 维普
Astyanax mexicanus has repeatedly colonized cave environments,displaying evolutionary parallelisms in many troglobitic traits.Despite being a model system for the study of adaptation to life in perpetual darkness,the parasites that infect cavefish are practically unknown.In this study,we investigated the macroparasite communities in 18 cavefish populations from independent lineages and compared them with the parasite diversity found in their sister surface fish populations,with the aim of better understanding the role that parasites play in the colonization of new environments.Within the cavefish populations,we identified 13 parasite taxa,including a subset of 10 of the 27 parasite taxa known for the surface populations.Parasites infecting the cavefish belong to five taxonomic groups,including trematodes,monogeneans,nematodes,copepods,and acari.Monogeneans are the most dominant group,found in 14 caves.The macroparasites include species with direct life cycles and trophic transmission,including invasive species.Surprisingly,paired comparisons indicate higher parasite richness in the cavefish than in the surface fish.Spatial variation in parasite composition across the caves suggests historical and geographical contingencies in the host-parasite colonization process and potential evolution of local adaptations.This base-line data on parasite diversity in cavefish populations of A.mexicanus provides a foundation to explore the role of divergent parasite infections under contrasting ecological pressures(cave vs.surface environments)in the evolution of cave adaptive traits.

AdaptationMetazoan parasitesNiche changeParasite assemblagePrevalence

Ana Santacruz、David Hernández-Mena、Ramses Miranda-Gamboa、Gerardo Pérez-Ponce De León、Claudia Patricia Ornelas-García

展开 >

Departamento de Zoología,Instituto de Biología,Universidad Nacional Autónoma de México,México City CP 04510,México

Stowers Institute for Medical Research,Kansas City,MO 64110,USA

Departamento de Sistemas y Procesos Naturales,Escuela Nacional de Estudios Superiores Unidad Mérida,Ucú,Yucatán CP 97357,México

Instituto de Energías Renovables,Universidad Nacional Autónoma de México,Temixco,Morelos CP 62580,México

Colección Nacional de Peces,Departamento de Zoología,Instituto de Biología,Universidad Nacional Autónoma de México,México City CP 04510,México

展开 >

Fronteras de la Ciencia-CONACyT and Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica(PAPIIT),UNAMFronteras de la Ciencia-CONACyT and Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica(PAPIIT),UNAM

191986IN212419

2023

10.24272/j.issn.2095-8137.2022.376

动物学研究
中国科学院昆明动物研究所 中国动物学会

动物学研究

CSTPCDCSCD
影响因子：0.582
ISSN：0254-5853
年,卷(期)：2023.44(4)
  • 1
  • 95