Article (Scientific journals)
Reproductive cycle and follicle cleaning process of Mytilus galloprovincialis (Mollusca: Bivalvia) from a polluted coastal site in Algeria
Rouabhi, Y. L.; Grosjean, P.; Boutiba, Z. et al.
2019In Invertebrate Reproduction and Development, 63 (4)
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Keywords :
Mytilidae; gonad histology; gamete degeneration; environment; pollution
Abstract :
[en] This work focused on the reproductive cycle and cleaning process of follicles in Mytilus galloprovincialis and aimed to extend knowledge of the reproductive cycles of Mytilidae. Biometric and histological measurements were taken monthly over 12 months from mussels at a polluted site, the port of Oran in Algeria. Environmental parameters were monitored concomitantly. Mytilus galloprovincialis reproduced throughout the year, with a main spawning period between November and February and a second between March and June. Several follicle cleaning processes were observed throughout the reproductive cycle. They occurred under two circumstances. First, in the absence of reserve tissues, mature gametes were degraded. This happened when spawning was about to end and corresponded to the last stage of reproduction. Second, atresia, gamete degeneration and a cessation of spawning occurred whatever the stage of the gonad development and whatever the environmental parameter values. These disturbances of reproduction may have resulted from pollution in the port of Oran and increased when temperature exceeded critical thresholds for gametogenesis. To conclude, gamete degeneration and spawning cessation because of coastal pollution and global warming could threaten M. galloprovincialis recruitment, and ultimately the shellfish economy, and could distort biomonitoring strategies using mussels.
Research center :
Universities of Liege, Mons & Oran 1
Disciplines :
Environmental sciences & ecology
Author, co-author :
Rouabhi, Y. L.;  Numerical Ecology of Aquatic Systems, Complexys Institute, University of Mons, Mons, Belgium, Laboratory Network for Environmental Monitoring (LRSE), Department of Biology, University of Oran 1, Oran, Algeria
Grosjean, P.;  Numerical Ecology of Aquatic Systems, Complexys Institute, University of Mons, Mons, Belgium
Boutiba, Z.;  Laboratory Network for Environmental Monitoring (LRSE), Department of Biology, University of Oran 1, Oran, Algeria
Rouane Hacene, O.;  Laboratory Network for Environmental Monitoring (LRSE), Department of Biology, University of Oran 1, Oran, Algeria
Richir, Jonathan  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (AGO)
Language :
English
Title :
Reproductive cycle and follicle cleaning process of Mytilus galloprovincialis (Mollusca: Bivalvia) from a polluted coastal site in Algeria
Publication date :
05 July 2019
Journal title :
Invertebrate Reproduction and Development
ISSN :
0792-4259
eISSN :
2157-0272
Publisher :
Taylor and Francis Ltd.
Volume :
63
Issue :
4
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Complex Systems Research Institute (Complexys) of the University of Mons
Available on ORBi :
since 29 October 2019

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