Monogenea of fishes from the lagoon flats of Palmyra Atoll in the Central Pacific

摘要

A survey of the monogeneans of fishes from the lagoon flats of Palmyra Atoll detected 16 species already reported from the Indo-West Pacific faunal region. A total of 653 individual fish from 44 species were collected from the sand flats bordering the lagoon of the atoll. Eighteen species of fish were infected with monogeneans. The monogenean species recovered were: Benedenia hawaiiensis on Acanthurus xanthopterus, Chaetodon auriga, Chaetodon lunula, Mulloidichthys flavolineatus, Pseudobalistes flavimarginatus and Rhinecanthus aculeatus; Ancyrocephalus ornatus on Arothron hispidus; Euryhaliotrema annulocirrus on Chaetodon auriga and Chaetodon lunula; Euryhaliotrema chrysotaeniae on Lutjanus fulvus; Euryhaliotrema grandis on Chaetodon auriga and Chaetodonlunula; Haliotremaacanthuri on Acanthurustriostegus; Haliotremaaurigae on Chaetodonauriga and Chaetodonlunula; Haliotremadempsteri on Acanthurusxanthopterus; Haliotremaminutospirale on Mulloidichthysflavolineatus; Haliotrematoidespatellacirrus on Lutjanusmonostigma; Neohaliotremabombini on Abudefdufseptemfasciatus and Abudefdufsordidus; Acleotremagirellae and Acleotremaparastromatei on Kyphosuscinerascens; Cemocotylellaelongata on Caranxignobilis, Caranxmelampygus and Caranxpapuensis; Metamicrocotylamacracantha on Crenimugilcrenilabris; and Pseudopterinotremaalbulaeon Albulaglossodonta. All these monogenean–host combinations represent new geographical records. The monogenean species composition of the Palmyra Atoll is similar to that of the Hawaiian Islands. However, the number of species recovered was lower compared with other localities within the Indo-West Pacific, perhaps due to the geographical isolation of Palmyra Atoll.