Systematic Parasitology

, Volume 96, Issue 2, pp 131–147 | Cite as

Microcotyle visa n. sp. (Monogenea: Microcotylidae), a gill parasite of Pagrus caeruleostictus (Valenciennes) (Teleostei: Sparidae) off the Algerian coast, Western Mediterranean

  • Chahinez Bouguerche
  • Delphine Gey
  • Jean-Lou JustineEmail author
  • Fadila Tazerouti
Part of the following topical collections:
  1. Monogenea


Parasite biodiversity of fish of the southern part of the Mediterranean sea is still incompletely explored. We describe here Microcotyle visa n. sp. from the gill filaments of the bluespotted seabream Pagrus caeruleostictus (Valenciennes) (Sparidae) collected off the Algerian coast. The identity of fish hosts was confirmed by barcoding. Microcotyle visa n. sp. is herein described and illustrated. Analysis of the cox1 gene of the monogeneans revealed minor intraspecific variation (1.4%), an order of magnitude lower than the distance between this species and other Microcotyle species (10–15 %). Microcotyle visa n. sp. is distinguished from Microcotyle erythrini van Beneden & Hesse, 1863, a congener infesting sparids, on the basis of morphological (size of clamps, number of testes) and molecular (cox1) differences. This is the fourth member of the genus known to parasitise a sparid host. A species of Paramicrocotyle sp. included in the molecular analysis was nested within a robust Microcotyle + Paramicrocotyle clade; in the absence of demonstrated molecular and morphological differences, we consider that Paramicrocotyle Caballero & Bravo-Hollis, 1972 is a junior synonym of Microcotyle van Beneden & Hesse, 1863 and transfer two species of Paramicrocotyle as Microcotyle danielcarrioni (Martinez & Barrantes, 1977) n. comb. and Microcotyle moyanoi (Villalba & Fernandes, 1986) n. comb.



The authors are grateful to the French Consulate in Algiers. We thank members of the administrative staff of ISYEB, MNHN, for help for the visa, namely Sabrina Permall, Guzide Selcuk-Shahine, Sylvianne Babin and Nora Tagnit-Hamou. The authors are indebted to the staff of LBEIG, Amina Boutellis, Zouhour El Mouna Ayadi and Samia Terkmani for their continued support of our research. Our thanks are also due to fishermen from Regaiia and especially Mohamed Kayrouz. We thank Marcelo Enrique Oliva and John D. Chero for providing references.


This work was funded by ISYEB, MNHN.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All applicable institutional, national and international guidelines for the care and use of animals were followed.


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Authors and Affiliations

  1. 1.Université des Sciences et de la Technologie Houari Boumediene (U.S.T.H.B), Faculté des Sciences Biologiques, Département d’Écologie et Environnement, Laboratoire de Biodiversité et Environnement, Interactions et GénomesAlgerAlgeria
  2. 2.Service de Systématique moléculaire, UMS 2700 CNRS, Muséum National d’Histoire Naturelle, Sorbonne UniversitésParis Cedex 05France
  3. 3.Institut Systématique Évolution Biodiversité (ISYEB), Muséum National d’Histoire Naturelle, CNRS, Sorbonne Université, EPHEParisFrance

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