Heteronchoineans (Monogenoidea) from the Gills of Crevalle Jack, Caranx hippos (Perciformes, Carangidae), from Everglades National Park, Florida, with a Redescription of Protomicrocotyle mirabilis (Gastrocotylinea, Protomicrocotylidae)

摘要

Examination of the gills of 10 crevalle jack, Caranx hippos (Linnaeus) (Carangidae), from the northeastern portion of Florida Bay, Everglades National Park, Florida revealed 3 species of Heteronchoinea (Monogenoidea): Protomicrocotyle mirabilis (MacCallum, 1918) Johnston & Tiegs, 1922 (Gastrocotylinea, Protomicrocotylidae) (prevalence = 80%; intensity = 2-16 parasites/host; mean intensity = 7 parasites/host); Allopyragraphorus hippos (Hargis, 1956) Yamaguti, 1963 (Microcotylinea, Allopyragraphoridae) (80%; 1-8; 3.5); and Cemocotyle noveboracensis Price, 1962 (Microcotylinea, Cemocotylidae) (80%; 1-100; 35.3). Two crevalle jack (standard length 139-140 mm) were uninfected; 3 (standard length 154-183 mm) had mean intensities (all parasite species) of 14.3 (intensity = 5-20) parasites per host; 5 larger hosts (standard length = 312-395 mm) were more heavily infected with the 3 parasite species (mean intensity = 63.8 [intensity = 16-109] parasites per host). Protomicrocotyle mirabilis is redescribed and figured; A. hippos is considered a valid species and distinct from Allopyragraphorus incomparabilis (MacCallum, 1917) Yamaguti, 1963 (previously considered synonyms); and C. noveboracensis is distinguished from congenerics in part by lacking a haptoral lappet.