Produção Nacional
Revisado por pares
The impact of rising sea temperature on innate immune parameters in the tropical subtidal sea urchin Lytechinus variegatus and the intertidal sea urchin Echinometra lucunter
2013; Elsevier BV; Volume: 92; Linguagem: Inglês
10.1016/j.marenvres.2013.09.005
ISSN1879-0291
AutoresPaola Cristina Branco, Jõao Carlos Shimada Borges, Marinilce Fagundes dos Santos, Bernard Ernesto Jensch, José Roberto Machado Cunha da Silva,
Tópico(s)Coral and Marine Ecosystems Studies
ResumoOcean temperatures are rising throughout the world, making it necessary to evaluate the impact of these temperature changes on sea urchins, which are well-known bioindicators. This study evaluated the effect of an increase in temperature on the immune response of the subtidal Lytechinus variegatus and the intertidal Echinometra lucunter sea urchins. Both species were exposed to 20 (control), 25 and 30 °C temperatures for 24 h, 2, 7 and 14 days. Counting of coelomocytes and assays on the phagocytic response, adhesion and spreading of coelomocytes were performed. Red and colorless sphere cells were considered biomarkers for heat stress. Moreover, a significant decrease in the phagocytic indices and a decrease in both cell adhesion and cell spreading were observed at 25 and 30 °C for L. variegatus. For E. lucunter, the only alteration observed was for the cell proportions. This report shows how different species of sea urchins respond immunologically to rising temperatures.
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