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Issue: Vol. 5448 No. 4: 14 May 2024
Type: Article
Published: 2024-05-14
DOI: 10.11646/zootaxa.5448.4.1
Page range: 451-481
Abstract views: 98
PDF downloaded: 2

Ciliate symbionts of bivalves with notes on their worldwide geographic distribution

Laboratorio de Protozoología; Departamento de Biología Comparada; Facultad de Ciencias; Universidad Nacional Autónoma México; Av. Universidad 3000; Circuito Ext. s/núm. Coyoacán; C. P. 04510 Ciudad de México; Mexico
Museu de Malacologia Prof. Pinto de Oliveira; Universidade Federal de Juiz de Fora; Juiz de Fora; Brazil
Laboratório de Protozoologia; Programa de Pós-graduação em Biodiversidade e Conservação da Natureza; Universidade Federal de Juiz de Fora; CEP: 36036-900; Juiz de Fora; Minas Gerais; Brazil
Protist Bivalvia Ciliophora epibionts geographic distribution Mollusca parasites

Abstract

The shells, mantle cavities and various organs of mollusks serve as suitable habitats for symbiotic ciliates, as commensal, epibiotic and parasitic. With about 80,000 species, molluscans are distributed in freshwater, marine and terrestrial habitats; symbiotic ciliates have been recorded in bivalves, gastropods and polyplacophorans; however these records have not been integrated in comprehensive revisions. The goal of this work is to provide an updated checklist of the ciliates involved as symbionts of bivalve molluscs worldwide. Available records of symbiotic species of ciliates were compiled and checked, along with their molluscan hosts and localities. We obtained data for 165 species of ciliates as symbionts of 158 bivalve hosts, distributed in 31 countries, regions and seas. This is the first comprehensive study to review the biodiversity of ciliates associated with bivalves and show that only a small fraction of this class of molluscs has been studied in terms of their symbiotic relationships with ciliates.

 

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