Exposure to the Florida red tide dinoflagellate, Karenia brevis, and its associated brevetoxins induces ecophysiological and proteomic alterations in Porites astreoides.

ABSTRACT: As reef-building corals are increasingly being exposed to persistent threats that operate on both regional and global scales, there is a pressing need to better understand the complex processes that diminish coral populations. This study investigated the impacts of the Florida red tide dinoflagellate Karenia brevis and associated brevetoxins on selected facets of coral biology using Porites astreoides as a model system. When provided with choice assays, P. astreoides larvae were shown to actively avoid seawater containing red tide (5×105 cells L-1-7.6×106 cells L-1) or purified brevetoxins (0.018 μg mL-1 brevetoxin-2 and 0.0018 μg mL-1 brevetoxin-3). However, forced exposure to similar treatments induced time-dependent physiological and behavioral changes that were captured by PAM fluorome

SUBMITTER: Reynolds DA 

PROVIDER: S-EPMC7006924 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature