Abstract
A new nematode species, Philometra mirabilis sp. n. (Philometridae), is described based on a subgravid female specimen recovered from the ovary of the freshwater perciform fish Cichla mirianae Kullander and Ferreira (Cichlidae) in the Juruena River (Amazon River basin), State of Mato Grosso, Brazil. The new species is morphologically very different from congeners parasitizing fishes in South America, being mainly characterized by the markedly elongate, narrow body 171 mm long (maximum width/body length 1:598), the presence of three small cone-shaped oesophageal teeth protruding out of the mouth and an onion-shaped oesophageal inflation distinctly separated from the posterior part of the oesophagus, the relative length of the oesophagus, and the rounded posterior end of the body without any caudal projections. It is the third known valid species of Philometra Costa, 1845 parasitizing a freshwater fish in South America and the second species of this genus reported from fishes of the family Cichlidae.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cárdenas MQ, Moravec F, Fernandes BMM, Morais AM (2012) A new species of Philometra Costa, 1845 (Nematoda: Philometridae) from the freshwater fish (red piranha) Pygocentrus nattereri Kner (Characidae) in Amazonia, Brazil. Syst Parasitol 83:137–144
Caspeta-Mandujano JM, Granados Ramírez JG, Peralta-Rodríguez JL (2009) A new philometrid species (Nematoda) from the freshwater fish Cichlasoma istlanum (Jordan and Snyder, 1899) (Cichlidae) in Mexico. J Parasitol 95:403–406
Froese R, Pauly D (eds) (2014) FishBase. World Wide Web electronic publication, version 12/2014. http://www.fishbase.org
Kalyankar SD (1971) On a new species of Philometra (Philometridae: Philometra Costa, 1845) from India. Acta Zool Mex 10:1–5
Kullander SO, Ferreira EJG (2006) A review of the South American cichlid genus Cichla, with descriptions of nine new species (Teleostei:Cichlidae). Ichthyol Explor Freshwat 17:289–298
Moravec F (2006) Dracunculoid and anguillicoloid nematodes parasitic in vertebrates. Academia, Prague, 634 pp
Moravec F, Ali AH (2014) Additional observations on Philometra spp. (Nematoda: Philometridae) in marine fishes off Iraq, with the description of two new species. Syst Parasitol 87:259–271
Moravec F, Bakenhaster M, Fajer-Ávila EJ (2014) Three new gonad-infecting species of Philometra (Nematoda: Philometridae) parasitic in Lutjanus spp. (Lutjanidae) in the northern Gulf of Mexico off Florida, USA. Folia Parasitol 61:355–369
Moravec F, Charo-Karisa H, Jirků M (2009) Philometrids (Nematoda: Philometridae) from fishes of Lake Turkana, Kenya, including two new species of Philometra and erection of Afrophilometra gen. n. Folia Parasitol 56:41–54
Moravec F, Chavan SP (2012) Female morphology of Philometra hyderabadensis Rasheed, 1963 (Nematoda: Philometridae), a little-known parasite of the catfish Wallago attu Bloch & Schneider in India, as revealed by SEM observations. Syst Parasitol 83:117–122
Moravec F, de Buron I (2013) A synopsis of our current knowledge of philometrid nematodes, a group of increasingly important fish parasites. Folia Parasitol 60:81–101
Moravec F, Diggles B (2014) Two new gonad-infecting species of Philometra Costa, 1845 (Nematoda: Philometridae) from marine fishes off the northern coast of Australia. Syst Parasitol 89:33–44
Moravec F, Justine J-L (2014) Philometrids (Nematoda: Philometridae) in carangid and serranid fishes off New Caledonia, including three new species. Parasite 21:21
Moravec F, Manoharan J (2014a) Two new gonad-infecting species of Philometra (Nematoda: Philometridae) parasitic in Lutjanus spp. (Osteichthyes: Lutjanidae) in the Bay of Bengal, India. Parasitol Res 113:3299–3307
Moravec F, Manoharan J (2014b) Gonad-infecting species of Philometra (Nematoda: Philometridae) from groupers Epinephelus spp. (Osteichthyes: Serranidae) in the Bay of Bengal, India. Acta Parasitol 59:596–605
Moravec F, Scholz T, Kuchta R, Grygier MJ (2008) Female morphology of Philometra parasiluri (Nematoda, Philometridae), an ocular parasite of the Amur catfish Silurus asotus in Japan. Acta Parasitol 53:153–157
Rasheed SR (1963) A revision of the genus Philometra Costa, 1845. J Helminthol 37:89–130
Vaz Z, Pereira C (1934) Contribuição ao conhecimento dos nematoides de peixes fluviais do Brasil. Arq Inst Biol, S Paulo 5:87–103
Wu S, Moravec F, Wang G, Nie P (2006) First description of the male and redescription of the female of Philometra clavaeceps Dogiel and Akhmerov, 1959 (Nematoda: Philometridae), a parasite of East Asian cyprinid fish. J Parasitol 92:380–384
Yamaguti S (1935) Studies on the helminth fauna of Japan. Part 9. Nematodes of fishes., 1. Jap J Zool 6:337–386
Acknowledgments
The authors’ thanks are due to the staff of the Laboratory of Electron Microscopy, Institute of Parasitology, Biology Centre of the AS CR, České Budějovice, for their technical assistance, and to Blanka Škoríková of the same Institute for help with the illustrations. This study was partly supported by the Czech Science Foundation (Grant. No. P505/12G112) and by institutional support (RVO:60077344, Institute of Parasitology, BC ASCR).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Moravec, F., Diggles, B. Philometra mirabilis sp. n. (Nematoda: Philometridae), a new gonad-infecting parasite from the freshwater fish Cichla mirianae (Cichlidae) in Brazilian Amazon. Parasitol Res 114, 1929–1932 (2015). https://doi.org/10.1007/s00436-015-4381-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00436-015-4381-7