First record of the nematode, Huffmanela sp. infecting the broomtail wrasse ( Cheilinus lunulatus ) from Egypt
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ORIGINAL ARTICLE
First record of the nematode, Huffmanela sp. infecting the broomtail wrasse (Cheilinus lunulatus) from Egypt Ismail A. M. Eissa1 • Ahmed O. Gadallah2 • Mahmoud Hashim3 • Essam A. Noureldin4 Elsayed M. Bayoumy5 • Mohie Haridy6
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Received: 10 June 2020 / Accepted: 15 October 2020 Ó Indian Society for Parasitology 2020
Abstract A total of 385 Red Sea coral reef fish representing three species; Broom tail wrasse (Cheilinus lunulatus), Blacktip grouper (Epinephelus fasciatus) and Rabbit fish (Siganus sp.). were examined for the presence of nematode Huffmanela species. The eggs of Huffmanela species were isolated and identified only from the C. lunulatus. The total prevalence of Huffmanela sp. infestation were 69.5%. The highest prevalence was observed in winter and the lowest in spring and summer. The prevalence was increased in correlation with fish body weight. Fully developed eggs of Huffmanela species were dark brown embryonated, elongated, with slightly protruding plugs. A high density of Huffmanela sp. eggs with different developmental stages packed the epithelial layer of the gas bladder. The surrounding tissue of gas bladder was hemorrhagic and sometimes necrotic associated with chronic inflammatory cell infiltration. This is the first record of & Mohie Haridy [email protected] 1
Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
2
National Institute of Oceanography and Fisheries, Hurghada Branch, Hurghada, Egypt
3
Department of Fish Diseases and Management, Faculty of Veterinary Medicine, New Valley University, Elkharja, Egypt
4
Department of Fish Diseases and Management, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
5
Parasitology Lab, Hydrobiology Department, National Research Centre, Dokki, Egypt
6
Department of Pathology and Clinical Pathology, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
Huffmanela species infestation in Broom tail wrasse C. lunulatus, Red Sea coral reef fishes. Keywords Huffmanela Broom tail wrasse Coral reefs Gas bladder Red Sea
Introduction The Cheilinus lunulatus (broomtail wrasse) is a species of Labrids. The Labridae family, commonly known as wrasses, is one of the most abundant fish, consisting of about 580 species (Choat and Bellwood 1998; Randall et al. 1997). The C. lunulatus is native in the Red Sea and the Indian Ocean. It has a very low prevalence at the local level and limited geographical distribution. C. lunulatus feeds mainly on mollusks and hard-shelled invertebrates. As their diverse food habits, they fill many important ecological roles on reefs of tropical and temperate regions around the world. C. lunulatus occurs from Red Sea, the Gulf of Oman to Persian Gulf. The commercial importance of C. lunulatus lies primarily in their popularity as aquarium fishes, due to their beautiful colors. Some other medium to large broomtail wrasses are popular food fishes as well (Allen and Robertson 1994; Choat and Be
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