Morphological and physiological assessments reveal that freshwater turtle (Mauremys leprosa) can flourish under extremely degraded-polluted conditions
| Autor: | Mohamed Said El Hassani, El Mouden El Hassan, Xavier Bonnet, Tahar Slimani |
|---|---|
| Přispěvatelé: | Faculté des Sciences Semlalia, Faculté des Sciences Semlalia [Marrakech], Université Cadi Ayyad [Marrakech] (UCA)-Université Cadi Ayyad [Marrakech] (UCA), Faculté des Sciences Semlalia Marrakech, Laboratory Biodiversity and Ecosystem Dynamics, Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Male
Mauremys leprosa Environmental Engineering Bio-indicator Health Toxicology and Mutagenesis 0208 environmental biotechnology Population Dynamics CORT Terrapin Fresh Water 02 engineering and technology 010501 environmental sciences Stress 01 natural sciences Population density law.invention law Water Quality Environmental Chemistry Animals Body Size Humans Testosterone 14. Life underwater Turtle (robot) Ecosystem 0105 earth and related environmental sciences Pollutant Waste Products Body condition biology Ecology Public Health Environmental and Occupational Health General Medicine General Chemistry biology.organism_classification T4 Pollution 020801 environmental engineering Turtles Habitat 13. Climate action Threatened species [SDE]Environmental Sciences Female Water quality Biomarkers Water Pollutants Chemical |
| Zdroj: | Chemosphere Chemosphere, Elsevier, 2019, 220, pp.432-441. ⟨10.1016/j.chemosphere.2018.12.142⟩ |
| ISSN: | 0045-6535 |
| Popis: | International audience; Freshwater turtles are long-lived sedentary organisms used as biological sentinels to assess anthropo-genic perturbations in freshwater-ecosystems; notably because pollutants tend to accumulate in their tissues. Pollution has detrimental effects in sea turtles, but studies in freshwater turtles have provided contrasted results: several species have been impacted by habitat perturbation and pollution while others not. It is important to explore this issue since freshwater turtles are threatened worldwide. We compared two populations of the stripe necked terrapin (Mauremys leprosa) in a relatively pristine area (piedmont of the Atlas mountain) versus an extremely degraded-polluted area (sewers of a large city) in Morocco. All morphological and physiological proxies showed that turtles were able to cope remarkably well with highly degraded-polluted habitat. Population density, body size, and body condition were higher in the sewers, likely due to permanent water and food availability associated with human wastes. Stress markers (e.g. glucocorticoids) provided complex results likely reflecting the capacity of turtles to respond to various stressors. Reproductive parameters (testosterone level, indices of vitellogenesis) were lower in the relatively pristine area. The deceptive overall image provided by these analyses may hide the disastrous human impact on rivers. Indeed, Mauremys leprosa is the only aquatic vertebrate able to survive in the sewers, and thus, might nonetheless be a pertinent indicator of water quality, providing that the complexity of eco-physiological responses is considered. |
| Databáze: | OpenAIRE |
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