{Reference Type}: Journal Article
{Title}: Shark critical life stage vulnerability to monthly temperature variations under climate change.
{Author}: Coulon N;Pilet S;Lizé A;Lacoue-Labarthe T;Sturbois A;Toussaint A;Feunteun E;Carpentier A;
{Journal}: Mar Environ Res
{Volume}: 198
{Issue}: 0
{Year}: 2024 Jun 30
{Factor}: 3.737
{DOI}: 10.1016/j.marenvres.2024.106531
{Abstract}: In a 10-month experimental study, we assessed the combined impact of warming and acidification on critical life stages of small-spotted catshark (Scyliorhinus canicula). Using recently developed frameworks, we disentangled individual and group responses to two climate scenarios projected for 2100 (SSP2-4.5: Middle of the road and SSP5-8.5: Fossil-fueled Development). Seasonal temperature fluctuations revealed the acute vulnerability of embryos to summer temperatures, with hatching success ranging from 82% for the control and SSP2-4.5 treatments to only 11% for the SSP5-8.5 treatment. The death of embryos was preceded by distinct individual growth trajectories between the treatments, and also revealed inter-individual variations within treatments. Embryos with the lowest hatching success had lower yolk consumption rates, and growth rates associated with a lower energy assimilation, and almost all of them failed to transition to internal gills. Within 6 months after hatching, no additional mortality was observed due to cooler temperatures.