Thermal tolerance of Strongylocentrotus purpuratus early life history stages: mortality, stress-induced gene expression and biogeographic patterns.

摘要: In this study, we examined the differential thermal tolerance of Strongylocentrotus purpuratus early life history stages by comparing high temperature–induced mortality and relative levels stress-induced gene, hsp70, between S. embryos larvae from adults collected throughout species range. There was no significant difference gastrulae 4-arm plutei all sites examined. Furthermore, there little variability in temperature across biogeographic range as southern exhibited similar tolerances to northern individuals. Relative hsp70 mRNA expression did not differ overall two developmental at each site. Across sites, maximum approximately 25°C; however, narrower individuals, suggesting they are living closer their upper limit than