1. Seasonal gonadal development and age-related maturity patterns of introduced pumpkinseed (Lepomis gibbosus Linnaeus, 1758) in a heated thermal reservoir and an adjacent river reach
- Author
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Valente, E., Valente, M., Masson, G., Maul, A., Fox, M.G., Meyer, A., Pihan, J.C., Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Terre et Environnement de Lorraine (OTELo), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie des Substances Naturelles (ICSN), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Environmental and Resource Studies Program and Department of Biology, Trent University, Peterborough, Ontario K9J 7B8, Canada, UFR Sciences Fondamentales et Appliquées [Université de Lorraine], and Université de Lorraine (UL)
- Subjects
0106 biological sciences ,Male ,Gonad ,Hot Temperature ,Physiology ,media_common.quotation_subject ,Zoology ,010603 evolutionary biology ,01 natural sciences ,Biochemistry ,Perciformes ,Lepomis ,Freshwater reservoir ,Rivers ,Seasonal development ,medicine ,Seasonal breeder ,Animals ,Gonads ,media_common ,Maturity (geology) ,biology ,Ecology ,010604 marine biology & hydrobiology ,Reproduction ,biology.organism_classification ,medicine.anatomical_structure ,Fish ,[SDE]Environmental Sciences ,Female ,Precocial ,Seasons ,Development of the gonads ,General Agricultural and Biological Sciences ,Introduced Species ,Biological invasion ,Developmental Biology - Abstract
International audience; Testis and ovarian maturation status, maturity profile and gonado-somatic index (GSI) were assessed in pumpkinseed (Lepomis gibbosus) collected from Mirgenbach, a cooling-water reservoir associated with a nuclear power plant, and from the River Moselle 7km downstream of the reservoir's thermal outflow. Histological investigation indicated that in both sexes, gonadal development of pumpkinseed in the heated reservoir was more advanced than in the cooler Moselle River throughout the breeding season. The histological maturity profile of reservoir males ranked by the advancement of sperm cells was highly correlated with its GSI (rs=0.73, P
- Published
- 2015