Seahorses in a Future Warmer World
Aurelio, M., Faleiro, F., Lopes, V.M., Pires, V., Lopes, A.R., Pimentel, M.S., Repolho, T., Baptista, M., Narciso, L. and Rosa, R. 2013. Physiological and behavioral responses of temperate seahorses (Hippocampus guttulatus) to environmental warming. Marine Biology 160: 2663-2670.
The ten scientists found that (1) "both newborn juveniles and adults showed significant increases in metabolic rates with rising temperatures," with newborn juveniles being "more impacted by future warming via metabolic depression," that (2) "in adult stages, ventilation rates also increased significantly with environmental warming, but food intake remained unchanged," and that (3) "the frequency of swimming, foraging, swinging, and inactivity did not significantly change between the different thermal scenarios."
In light of these several findings, Aurelio et al. conclude that "adult seahorses show great resilience to heat stress and are not expected to go through any physiological impairment and behavioral change with the projected near-future warming," but they note that juveniles in their early life stages "display greater thermal sensitivity and may face greater metabolic challenges," the outcome of which remains unknown.