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Effects of industrial pollution on the reproductive biology of Squalius laietanus (Actinopterygii, Cyprinidae) in a Mediterranean stream (NE Iberian Peninsula)

AuthorsSoler, Patricia; Solé, Montserrat CSIC ORCID ; Bañon Suñer, Raquel; García-Galea, Eduardo; Durfort, Mercè; Matamoros, Víctor CSIC ORCID ; Bayona Termens, Josep María; Vinyoles, Dolors
KeywordsEndocrine disruption
Female fecundity
Gonadal histology
Desynchronised spawning
Issue Date2020
PublisherSpringer Nature
CitationFish Physiology and Biochemistry 46: 247-264 (2020)
AbstractMediterranean rivers are severely affected by pollutants from industry, agriculture and urban activities. In this study, we examined how industrial pollutants, many of them known to act as endocrine disruptors (EDCs), could disturb the reproduction of the Catalan chub (Squalius laietanus). The survey was conducted throughout the reproductive period of S. laietanus (from March to July 2014) downstream an industrial WWTP located in the River Ripoll (NE Iberian Peninsula). Eighty fish (28 females and 52 males) were caught by electrofishing upstream and 77 fish (33 females and 44 males) downstream a WWTP. For both sexes, the gonadosomatic index (GSI) and gonadal histology were examined and related to water chemical analysis and fish biomarkers. Female fecundity was assessed using the gravimetric method. Fish from the polluted site showed enhanced biomarker responses involved in detoxification. Also, in the polluted site, lower GSI values were attained in both sexes and females displayed lower numbers of vitellogenic oocytes. Gonadal histology showed that all maturation stages of testicles and ovaries were present at the two study sites but fish males from the polluted site had smaller diameter seminiferous tubules. Water chemical analysis confirmed greater presence of EDCs in the river downstream the industrial WWTP. The chemicals benzotriazole and benzothiazole could be partially responsible for the observed alterations in the reproductive biology of S. laietanus.
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Effects of industrial pollution on the reproductive biology of Squalius laietanus (Actinopterygii, Cyprinidae) in a Mediterranean stream (NE Iberian Peninsula).docxArtículo principal119,89 kBMicrosoft Word XMLView/Open
Table 1_Number of fish.docxMaterial suplementario16,2 kBMicrosoft Word XMLView/Open
Table 2_Physico-chemical water.docxMaterial suplementario13,44 kBMicrosoft Word XMLView/Open
Table 3_Occurrence of CEC.docxMaterial suplementario16,95 kBMicrosoft Word XMLView/Open
Table 4_Biomarkers.docxMaterial suplementario17,89 kBMicrosoft Word XMLView/Open
Table 5.IGS values.docxMaterial suplementario14,51 kBMicrosoft Word XMLView/Open
Table 6_Oocite size.docxMaterial suplementario15,41 kBMicrosoft Word XMLView/Open
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