CO2 leakage simulation: Effects of the decreasing pH to the survival and reproduction of two crustacean species

Autor(es)

Conradi, M. ^[1] ; Sanchez-Moyano, J. E. ^[1] ; Galotti, A. ^[2] ; Jimenez-Gomez, F. ^[2] ; Jimenez-Melero, R. ^[2] ; Guerrero, F. ^[2] ; Parra, G. ^[2] ; Bonnail, E. ^[3] ; DelValls, T. A. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Seville, Fac Biol, Dept Zool, Av Reina Mercedes S-N, E-41012 Seville - Spain

^[2] Univ Jaen, Ctr Adv Studies Earth Sci, Dept Anim Biol Plant Biol & Ecol, Campus Las Lagunillas S-N, Jaen 23071 - Spain

^[3] Univ Atacama, Ctr Invest Costeras Univ Atacama CIC UDA, Copiapo, Atacama - Chile

^[4] Santa Cecilia Univ UNISANTA, Dept Ecotoxicol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Marine Pollution Bulletin; v. 143, p. 33-41, JUN 2019.
• Citações Web of Science: 1

Resumo

The effects of CO2-related acidification on two crustacean populations, the isopod Cyathura carinata and the amphipod Elasmopus rapax, were studied. Three pH levels were tested: artificial seawater without CO2 injection and two levels of reduced pH. Even though RNA:DNA ratio was reduced for both species, no statistical significant differences were found between the control and the treatments. Both species experienced a reduction in survivorship, longevity and the body length of surviving animals; although the impairment observed in E. rapax was more severe than in C. carinata. The long life span isopod and the short life span amphipod experienced a high degree of impairment in the reproduction, likely due to the reallocation of resources from reproduction to body maintenance and increasing survival by postponing the brood production. Regardless of the underlying processes and the energetic pathways, both experienced failure to reproduce, which could lead to the local extinction of these species. (AU)

• Processo FAPESP: 18/18456-4 - AVALIAÇÃO DA TOXICIDADE DO CRACK A ORGANISMOS MARINHOS EXPOSTOS A DIFERENTES CENÁRIOS DE ACIDIFICAÇÃO POR ENRIQUECIMENTO DE CO2 (CO2caineTOX).
• Beneficiário: Tomas Angel Del Valls Casillas
• Modalidade de apoio: Auxílio à Pesquisa - Regular