Investigations on the Chilean kelp crab Taliepus dentatus ...

• Main Authors: Storch, Daniela, Fernández, Miriam, Navarette, Sergio A, Pörtner, Hans-Otto
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: Sampling by diver; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Climate change; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.760078; https://doi.pangaea.de/10.1594/PANGAEA.760078

Physiological responses of larval stages can differ from those of the adults, affecting key ecological processes. Therefore, developing a mechanistic understanding of larval responses to environmental conditions is essential vis-à-vis climate change. We studied the thermal tolerance windows, defined by lower and upper pejus (Tp) and critical temperatures (Tc), of zoea I, II, and megalopa stages of the Chilean kelp crab Taliepus dentatus. Tp limits determine the temperature range where aerobic scope is maximal and functioning of the organism is unrestrained and were estimated from direct observations of larval activity. Tc limits define the transition from aerobic to anaerobic metabolism, and were estimated from the relationship between standard metabolic rate and temperature. Zoea I showed the broadest, Zoea II an intermediate, and megalopae the narrowest tolerance window (Tp). Optimum performance in megalopae was limited to Tp between 11 and 15°C, while their Tc ranged between 7 and 19°C. Although Tc may be ... : Supplement to: Storch, Daniela; Fernández, Miriam; Navarette, Sergio A; Pörtner, Hans-Otto (2011): Thermal tolerance of larval stages of the Chilean kelp crab Taliepus dentatus. Marine Ecology Progress Series, 429, 157-167 ...