Cymothoa spinipalpa sp. nov. (Isopoda, Cymothoidae) a buccal cavity parasite of the marine fish, Oligoplites saurus (Bloch & Schneider) (Osteichthyes, Carangidae) of Rio Grande do Norte State, Brazil

Abstract

Cymothoa spinipalpa sp. nov. (Isopoda, Cymothoidae) a buccal cavity parasite of the marine fish, Oligoplites saurus, is described on the basis of eight male specimens and one female. The fish hosts were captured in the coastal waters of Natal, Rio Grande do Norte State, Brazil. In the new species, the anterior margin of the cephalon is doubled ventrally over the bases of the antennae. In this respect, it resembles C. recifea Thatcher & Fonseca, 2005. It differs from that species, however, in being much smaller and having basal carinae on the pereopods 4 to 7 that are small and rounded (not large and pointed). Also, pleopods 2-4 lack the folds and pockets that are present in C. recifea. The new species can be distinguished from all known Cymothoa spp. by the mandibular palps which are entirely covered with small spines in adult males. The mancas of the new species resemble those of Cymothoa oestrum since they have elongate antennae but they are wider and have shorter uropods.

Cymothoa frontalis, a cymothoid isopod parasitizing the belonid fish Strongylura strongylura from the Malabar Coast (Kerala, India): redescription, description, prevalence and life cycle

“…However, in C. frontalis, the exact duration of the successive development of each marsupial stage from their preceding stage is not clear. The final marsupial stage (manca) of C. frontalis showed close resemblance to that of A. pomacentri (Adlard and Lester 1995) and C. spinipalpa (Thatcher et al 2007). In A. pomacentri, the manca is released within 2 days after they appeared in the marsupium (Adlard and Lester 1995).…”

“…Most of the taxonomic descriptions of the cymothoids are based primarily on ovigerous females; the various life cycle stages (excepting perhaps the premanca/manca of few Cymothoa sp.) have not received much attention thus far (Richardson 1905;Sartor and Pires 1988;Thatcher et al 2003Thatcher et al , 2007Trilles and Bariche 2006;Hadfield et al 2011). Keeping these in view, the present paper addresses the question of precise identification of the cymothoid C. frontalis infesting the belonid fish inhabiting the Malabar Coast.…”

First record of Cymothoa spinipalpa (Isopoda: Cymothoidae) parasitizing the marine fish Atlantic bumper, Chloroscombrus chrysurus (Osteichthyes: Carangidae) from Brazil

“…Male and female parasites were separated and measured to the nearest millimetre (length from the tip of head to the end of telson) and then identified following Thatcher et al (2007). The parasites were removed from the branchial chamber (between the operculum and the gills) and from the buccal cavity (on the tongue) of the host.…”

Mothocya renardi (Bleeker, 1857) (Crustacea: Isopoda: Cymothoidae) parasitising Strongylura leiura (Bleeker) (Belonidae) off the Malabar coast of India: Redescription, occurrence and life-cycle

“…Surveying through the literature it is evident that most of the descriptions of cymothoids are based only on ovigerous females; other life-cycle stages have not received much attention (Richardson, 1905;Sartor & Pires, 1988;Thatcher et al, 2003Thatcher et al, , 2007Trilles & Bariche, 2006;Hadfield et al, 2011;Aneesh et al, 2015b). Males and females and their larval stages (premanca and/or manca) have been described for five Cymothoa spp.…”

“…: C. liannae Sartor & Pires, 1988; C. catarinensis Thatcher, de Loyola, Silva, Jost & Souza-Conceicao, 2003;C. oestrum (Linnaeus, 1758); C. spinipalpa Thatcher, de Araujo, de Lima & Chellappa, 2007; and C. frontalis H. Milne Edwards, 1840 (see Sartor & Pires, 1988;Thatcher et al, 2003Thatcher et al, , 2007Aneesh et al, 2015b). Although there have been few detailed studies on Mothocya spp., the identity of this cymothoid, in most cases, is still uncertain (Bruce, 1986).…”