A pathological case caused by Philometra madai Quiazon, Yoshinaga & Ogawa, 2008 (Nematoda: Philometridae) in the ovary of the onespot snapper fish Lutjanus monostigma (Teleostei, Lutjanidae) from the Red Sea

  • Mohammed O. Al-Jahdali King Abdulaziz University, Faculty of Science, Department of Biological Sciences,


Lutjanus spp. (Teleostei, Lutjanidae) rarely recorded as hosts of gonad-infecting species of Philometra Costa, 1845 (Nematoda: Philometridae). Here, gravid females of Philometra madai Quiazon, Yoshinaga & Ogawa, 2008 which parasitizes the ovary of the bream Pagrus major (Teleostei, Sparidae) and the only species of the genus described from the Red Sea fishes, is recorded for the first time from the ovary of the onespot snapper fish Lutjanus monostigma (Cuvier, 1828) (Teleostei, Lutjanidae). Histopathological changes in the ovary of this fish associated with this infection were significant, and may thus affect the reproductive potential and success of the fish.


[1] Al-Jahdali, M. O and Hassanain R. M (2010) :Ovarian abnormality in a pathological case caused by Myxidium sp. (Myxozoa, Myxosporea) in onespot snapper fish Lutjanus monostigma (Teleostei, Lutjanidae) from the Red Sea, Acta Parasitologica, 55(1), 1–7 [2] Chavez R.A. & Oliva M.E. (2011). Philometra chilensis (Nematoda, Philometridae) affects the fecundity of the red cusk-eel, Genpterus chilensis (Guichenot) (Pisces, Ophidiidae) in Chile, Acta Parasitol., 56: 236-237. Clarke L.M., Dove A.D.M. & Conover D.O. (2006). Prevalence, intensity, and effect of a nematode (Philometra saltatrix) in the ovaries of bluefish (Pomatomus saltatrix). Fish. Bull., 104: 118–124. [3] Froese R. & Pauly D. (2004/2011). FishBase. World Wide Web electronic publication; www.fishbase.org. Glazebrook J.S., Hoey J.R., Campbell R. S. F. & Owens L. (1988). Diseases recorded on the Great Barrier Reef and management of tropical marine aquaria. Fish Diseases–Refresher Course for Veterinarians, University of Sydney Proceedings, 106: 491–512. [4] Harvell C.D., Mitchell C.E., Ward J.R., Altizer S., Dobson A.P., Ostfeld R.S. & Samuel M.D. (2002). Climate warming and disease risks for terrestrial and marine biota. Science, 296: 2158–2162. [5] Hesp S.A., Hobbs R.P. & Potter I.C. (2002). Infection of the gonads of Glaucosoma hebraicum by the nematode Philometra lateolabracis: occurrence and host response. Journal of Fish Biology, 60, 663.673.Linton E. 1907: Notes on parasites of Bermuda fishes. Proc. U. S. Natl. Mus., 33: 85–126. [6] Luna L.G. (1968). Manual of histological staining of the Armed Forces Institute of Pathology, 258 p. McGraw-Hill Book Company, New York, NY. [7] Molnár K. & Fernando C.H. (1975). Morphology and development of Philometra cylindracea (Ward and Magath, 1916) (Nematoda: Philometridae). J. Helminthol., 49: 19–24. [8] Moravec F. (2004). Some aspects of the taxonomy and biology of dracunculoid nematodes parasitic in fishes: a review. Folia Parasitol., 51: 1–13. [9] Moravec F. (2006). Dracunculoid and Anguillicoloid Nematodes Parasitic in Vertebrates. Academia, Prague, 634 pp. [10] Moravec F. (2008). Systematic status of Philometra jordanoi (López-Neyra, 1951) and some other congeneric species previously identified as Philometra lateolabracis (Yamaguti, 1935) (Nematoda: Philometridae). Folia Parasitol., 55: 159–160. [11] Moravec F. & Genc E. (2004). Redescription of three Philometra spp. (Nematoda, Philometridae) from the gonads of marine perciform fishes of Iskenderun Bay (North-East Mediterranean), Turkey. Acta Parasitol., 49: 31–40. [12] Moravec F., Glamuzina B., Marino G., Merella P. & Di Cave D. (2003). Occurrence of Philometra lateolabracis (Nematoda: Philometridae) in the gonads of marine perciform fishes in the Mediterranean region. Dis. Aquat. Org., 53: 267–269. [13] Moravec F. & Justine J.-L. (2009). New data on dracunculoid nematodes from fishes off New Caledonia, including four new species of Philometra (Philometridae) and Ichthyofilaria (Guyanemidae). Folia Parasitol., 56: 129–142. [14] Moravec F. & Justine J.-L. (2011).Two new gonad-infecting Philometra species (Nematoda: Philometridae) from the marine fish Lutjanus vitta (Perciformes: Lutjanidae) off New Caledonia. Folia Parasitol., 58: 302–310. [15] Moravec F., Molnár K. & Székely C. (1998). Lucionema balatonense gen. et sp. n., a new nematode of a new family Lucionematidae fam. n. (Dracunculoidea) from the swimbladder of the European pikeperch, Stizostedion lucioperca (Pisces). Folia Parasitol., 45: 57–61. [16] Moravec F., Ogawa K., Suzuki M., Miyazaki K. & Donai H. (2002). On two species of Philometra (Nematoda, Philometridae) from the serranid fish Epinephelus septemfasciatus in Japan. Acta Parasitol., 47: 34–40. [17] Moravec F., Orecchia P. & Paggi L. (1988). Three interesting nematodes from the fish Parupeneus indicus (Mullidae, Perciformes) of the Indian Ocean, including a new species, Ascarophis parupenei sp. n. (Habronematoidea). Folia Parasitol., 35: 47–57. [18] Moravec F., Nagasawa K. & Ogawa K. (1998). Observations on five species of philometrid nematodes from marine fishes in Japan. Syst. Parasitol., 40: 67–80. [19] Moravec F., Vidal-Martinez V.M., Vargas-Vazquez J., Vivas-Rodriguez C., Gonzalez-Solis D., Mendoza-Franco E., Sima-Alvarez . & Guemez-Ricalde J. (1997). Helminth parasites of Epinephelus morio (Pisces: Serranidae) of the Yucatan Peninsula, southeastern Mexico. Folia Parasitol., 44:255−266. [20] Perez G.R., Roumillat W.A., Levesque E.M., Connors V.A. & de Buron I. (2009). Synchronization of occurrence of the ovarian philometrid, Philometra carolinensis, with the spawning season of its host, the spotted seatrout, Cynoscion nebulosus. Parasitol. Res., 104: 1079–1085. [21] Quiazon K.M.A., Yoshinaga T. & Ogawa K. (2008). Taxonomical study into two new species of Philometra (Nematoda: Philometridae) previously identified as Philometra lateolabracis (Yamaguti, 1935). Folia Parasitol., 55: 29–41. Ramachandran P. 1975: Philometra cephalus sp. n. infecting the gonads of the striped mullet, Mugil cephalus L. from the Arabian coast of Kerala, India, with a note on its pathology. Zool. Anz. 194: 140–144. [22] Rees G. 1970: Some helminth parasites of fishes of Bermuda and an account of the attachment organ of Alcicornis carangis MacCallum, 1917 (Digenea: Bucephalidae). Parasitology 60: 195–221. Sakaguchi S., Yamagata Y., Sako H. 1987: Reidentification of Philometra parasitic on the Red Sea bream. Bull. Natl. Res. Inst. Aquacult. 12: 69–72. (In Japanese, with English summary.) [23] Santos Cavalcanti E.T., Takemoto R.M., Alves L.C., Chellappa S. 2010: First record of endoparasite Philometra sp. (Nematoda: Philometridae) in lane snapper Lutjanus synagris from the coast of Rio Grande do Norte, Brazil. Mar. Biodiv. Rec. 3: 1–4.
How to Cite
AL-JAHDALI, Mohammed O.. A pathological case caused by Philometra madai Quiazon, Yoshinaga & Ogawa, 2008 (Nematoda: Philometridae) in the ovary of the onespot snapper fish Lutjanus monostigma (Teleostei, Lutjanidae) from the Red Sea. JOURNAL OF ADVANCES IN BIOLOGY, [S.l.], v. 6, n. 1, p. 843-847, jan. 2017. ISSN 2347-6893. Available at: <https://cirworld.com/index.php/jab/article/view/5458>. Date accessed: 25 feb. 2017.


Teleostei;Lutjanus monostigma;Nematoda;Philometra;histopathology.