A first documented record of gnathiid infestation on white grouper (Epinephelus aeneus) in Iskenderun Bay (north-eastern Mediterranean), Turkey

A note on the occurrence of praniza larvae of Gnathiidae (Crustacea, Isopoda) on fishes from Northeast of Pará, Brazil

“…Comparing our values with literature reports concerning the infection of other species it can be seen that there is a great variation between the prevalence and intensity of infection, in some cases higher (González et al 2004, Genc et al 2005) and in others lower than the values obtained for our specimens (Grau et al 1999, Yuniar et al 2007). According to Genc et al (2005), who studied the infection of Epinephelus aneus in the North-eastern Mediterranean, the infestation increased at higher temperatures and varied throughout the year.…”

“…According to Genc et al (2005), who studied the infection of Epinephelus aneus in the North-eastern Mediterranean, the infestation increased at higher temperatures and varied throughout the year. In our case, in spite of the relatively low number of fish observed in order to draw conclusions about seasonality, there are apparently no differences between the infection from August, 2006to February, 2007.…”

“…Apparently these parasites are not host specific and were described from a number of hosts worldwide (Smit and Basson 2002, Smit and Davies 2004, Jones and Grutter 2005, Genc et al 2005. In some cases they can be very abundant: in Dentex dentex from the Western Mediterranean the prevalence of praniza larvae reached 85%, with a mean intensity of 20 parasites per fish (González et al 2004), and in Epinephelus aeneus from the North-Eastern Mediterranean 57.1% of the specimens were infected presenting a mean intensity of infection of 43.5 larvae per host (Genc et al 2005).…”

Infestation status of gnathiid isopod juveniles parasitic on Dusky grouper (Epinephelus marginatus) from the northeast Mediterranean Sea

“…Gnathiid larvae are one of the most common ectoparasites of elasmobranchs and teleosts (Nagel and Grutter 2007;McKiernan et al 2005;González and Moreno 2005;Rohde 2005;Smit et al 2003;Tinsley and Reilly 2002;Lo and Morand 2001;Upton 1984), including the Serranidae (Genc et al 2005). Gnathiids have low host specificity as well as highly dynamic movements onto and off the host fish (Grutter 1994;Chambers and Sikkel 2002).…”

First record of Gnathia sp. an ectoparasitic isopod isolated from the coral reef fish, Heniochus acuminatus collected from the Gulf of Mannar region, southeast coast of India

“…But in the present study no deformities have been observed in the lamellar pattern of gill chambers, but they appear in pale in color, it may be due to the loss of blood by blood sucking ectoparasites Gnathia sp. (Genc et al 2005) reported that the number of gnathiid parasite ranged between 2 and 48 (Mean intensity, 15.8) per white grouper (Epinephelus aeneus) while the other study results indicated that the number of gnathiid parasites ranged between 8 and 68 (Mean intensity, 21.35) per dusky grouper (Ephinephelus marginatus) from the Iskenderun Bay in Northeast Mediterranean Sea. In the present study mean intensity of Heniochus acuminatus was 13.9.…”