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Unusual haemogregarines parasitizing intertidal teleosts from the subtropical east coast of South Africa, with the description of Haemogregarina kunegemina sp. nov.

Published online by Cambridge University Press:  06 February 2012

Maryke L. Ferreira ,
Nico J. Smit  and
Angela J. Davies
Maryke L. Ferreira
Affiliation:
Department of Zoology, University of Johannesburg, PO Box 524, Auckland Park 2006, South Africa
Nico J. Smit*
Affiliation:
School of Environmental Sciences and Development, North West University, Private Bag X6001, Potchefstroom 2520, South Africa
Angela J. Davies
Affiliation:
School of Life Sciences, Faculty of Science, Kingston University, Kingston upon Thames, KT1 2EE, United Kingdom
*
Correspondence should be addressed to: N.J. Smit, School of Environmental Sciences and Development, North West University, Private Bag X6001, Potchefstroom 2520, South Africa email: [email protected]
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Abstract

Of three intertidal fish species collected on the east coast of South Africa, 67% (127/190) had haemogregarine infections. Horned rockskippers, Antennablennius bifilum Günther, 1861, demonstrated 77% parasite prevalence, maned blennies, Scartella emarginata Günther, 1861, 53% prevalence, and a single specimen of the hotlips triplefin, Helcogramma obtusirostre Klunzinger, 1871, was also parasitized. Less than 1% of A. bifilum and S. emarginata erythrocytes were infected, but ~2% of those of H. obtusirostre. Haemogregarines in A. bifilum and S. emarginata were morphologically similar to H. bigemina Laveran & Mesnil, 1901, but uncharacteristic clusters of four merozoites were observed in S. emarginata and paired gamonts were smaller overall than those of the type species, although close in size to H. bigemina reported elsewhere. Intraerythrocytic gamonts in H. obtusirostre, occurred mainly in fours, a characteristic of the European species originally named H. quadrigemina Brumpt & Lebailly, 1904. Additionally however, this South African species infrequently demonstrated eight intraerythrocytic gamonts and host cells commonly had spiny perimeters and were de-haemoglobulinized. Owing to the differences observed, this species is described as new to science and named Haemogregarina kunegemina sp. nov. Possible haemogregarine developmental stages were found in first and second stage pranizae of the gnathiid isopod, Gnathia pilosus Hadfield, Smit & Avenant-Oldewage, 2008, that had fed on the three fish hosts. These are the first reports of haemogregarines from teleosts of the subtropical east coast of South Africa.

Keywords

haemogregarinesintertidal fishSouth Africafish blood protozoansgnathiid isopodsHaemogregarina bigeminaHaemogregarina kunegeminaGnathia pilosusBlenniidaeTriptrygiidae
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 92 , Issue 5 , August 2012 , pp. 1209 - 1215
Copyright
Copyright © Marine Biological Association of the United Kingdom 2012

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