Results from experiments and investigations on the kelp crab Taliepus dentatus ...

• Main Authors: Storch, Daniela, Santelices, Pedro, Barria, Jessica, Cabeza, Karla, Pörtner, Hans-Otto, Fernández, Miriam
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2009
• Subjects: Sampling by diver; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Arctic; Antarctic; Cabeza; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.744981; https://doi.pangaea.de/10.1594/PANGAEA.744981

Studies of thermal tolerance in marine ectotherms are key in understanding climate effects on ecosystems; however, tolerance of their larval stages has rarely been analyzed. Larval stages are expected to be particularly sensitive. Thermal stress may affect their potential for dispersal and zoogeographical distribution. A mismatch between oxygen demand and the limited capacity of oxygen supply to tissues has been hypothesized to be the first mechanism restricting survival at thermal extremes. Therefore, thermal tolerance of stage zoea I larvae was examined in two populations of the Chilean kelp crab Taliepus dentatus, which are separated by latitude and the thermal regime. We measured temperature-dependent activity, oxygen consumption, cardiac performance, body mass and the carbon (C) and nitrogen (N) composition in order to: (1) examine thermal effects from organismal to cellular levels, and (2) compare the thermal tolerance of larvae from two environmental temperature regimes. We found that larval ... : Supplement to: Storch, Daniela; Santelices, Pedro; Barria, Jessica; Cabeza, Karla; Pörtner, Hans-Otto; Fernández, Miriam (2009): Thermal tolerance of crustacean larvae (zoea I) in two different populations of the kelp crab Taliepus dentatus (Milne-Edwards). The Journal of Experimental Biology, 212, 1371-1376 ...