Buscar

 Detalle_Publicacion

Intraspecific variation in the response of the estuarine European isopod Cyathura carinata (Krøyer, 1847) to ocean acidification


Abstract: In the present study the model isopod, Cyathura carinata were exposed to four pHNIST treatments (control: 7.9; 7.5, 7, 6.5) in order to determine the tolerance and pH threshold value this estuarine species withstand under future acidification scenarios. Seawater acidification significantly affected the lifespan of C. carinata, where population density was remarkably reduced at the lowest pH treatment. The longevity, survivorship and swimming activity (related to the acquisition of energy) of these isopods decreased with decreasing pH. Furthermore, to determine the possible metabolic plasticity of this species, the swimming activity, the Na+/K+-ATPase activity (relevant for osmoregulation process), and the RNA:DNA ratio (an indicator of fitness) were measure from two populations of C. carinata, one inhabiting a stable environment (pHNIST 7.5?8.0) and one inhabiting a fluctuating pCO2 regimes (pH?3.3?8.5) subjected to three pH treatments (7.9, 7.0 and 6.5). The population from high fluctuating pCO2 conditions showed capacity to withstand to pH?6.5, as well as higher longevity and metabolic plasticity, when compared with the population from the habitat with slight pCO2 variation. These results indicate that Cyathura population from stable environments could be vulnerable to ocean acidification because it could trigger detrimental effects on its survival energy budget, and growth. However, ocean acidification has limited effect on the energy budget and survival of C. carinata population from highly variable habitats, suggesting that they are able to cope with the elevated energy demand. The difference showed between populations is likely an indication of genetic differentiation in tolerance to ocean acidification, possibly attributable to local adaptations, which could provide the raw material necessary for adaptation to future conditions. In addition, our results suggest that when assessing marine crustacean responses to changing environments on a global scale, variability in population and metabolic responses need to be considered.



Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Conradi M., Sánchez-Moyano J., Bhuiyan M., Rodríguez-Romero A., Galotti A., Basallote M., DelValls A., Parra G., Riba I.,

 Fuente: Science of the Total Environment, 2019, 683, 134-145

Editorial: Elsevier

 Fecha de publicación: 15/09/2019

Nº de páginas: 12

Tipo de publicación: Artículo de Revista

DOI: 10.1016/j.scitotenv.2019.05.227

ISSN: 0048-9697,1879-1026

Proyecto español: CTM2012-36476-C02-02

Url de la publicación: https://doi.org/10.1016/j.scitotenv.2019.05.227

Autores/as

CONRADI BARRENA, MERCEDES

SÁNCHEZ MOYANO, JUAN EMILIO

BHUIYAN, MD KHURSHID ALAM

ARACELI RODRIGUEZ ROMERO

GALOTTI, ANDRÉA

BASALLOTE SÁNCHEZ, MARÍA DOLORES

DELVALLS CASILLAS, TOMÁS ÁNGEL

PARRA ANGUITA, GEMA

M. INMACULADA RIBA LÓPEZ