Spatial distribution and impact of the gill-parasitic Mazocraes alosae (Monogenea Polyopisthocotylea) on Alosa alosa and A. fallax (Actinopterygii, Clupeidae)

Gérard, Claudia; Hervé, Maxime; Réveillac, Elodie; Acou, Anthony (2016). Spatial distribution and impact of the gill-parasitic Mazocraes alosae (Monogenea Polyopisthocotylea) on Alosa alosa and A. fallax (Actinopterygii, Clupeidae). Hydrobiologia, 763(1), pp. 371-379. Springer 10.1007/s10750-015-2391-1

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Are the distribution of Mazocraes alosae and its impact on the host similar between Alosa alosa and A. fallax according to their resemblances? Parasites were numbered on each gill of shads sampled in North-East Atlantic coastal waters and connected rivers. Their impact on host condition was measured using girth, gonado-somatic ratio, C/N ratio, and Fulton’s K. Prevalence and mean intensity of M. alosae were significantly higher for A. alosa than for A. fallax, including in sympatric conditions. The mean intensity varied among sites whatever fish species; it was higher in coastal–estuarine versus fresh waters only for A. fallax. The distribution of M. alosae was aggregated in the host population whatever species. At the host individual level, some gills (second and third for A. alosa, second for A. fallax) were significantly more inhabited than others, probably in relation with larger water volumes flowing on these gills and mazocraeid sedentary lifestyle. Despite high prevalence and intensity, no negative impact of M. alosae was demonstrated on the host condition whatever the index considered. Our study underlines the major occurrence of M. alosae on shads and the potential use of such benign parasite as biological tag to discriminate closely related host species. © 2015, Springer International Publishing Switzerland.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Biotic Interactions
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Hervé, Maxime

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0018-8158

Publisher:

Springer

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

22 Feb 2016 16:01

Last Modified:

26 Aug 2019 09:16

Publisher DOI:

10.1007/s10750-015-2391-1

Related URLs:

Uncontrolled Keywords:

Alosa sp; Anadromous, Body condition, Gill parasite, Mazocraes alosae, Microhabitat restriction

BORIS DOI:

10.7892/boris.75722

URI:

https://boris.unibe.ch/id/eprint/75722

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