Potential respiration estimated by electron transport system activity in deep-sea suprabenthic crustaceans off Balearic Islands (Western Mediterranean)

作者：Herrera A^*; Gomez M; Packard T T; Reglero P; Blanco E; Barbera Cebrian C

来源：Journal of Marine Systems, 2014, 138: 104-111.

DOI：10.1016/j.jmarsys.2014.02.015

• Suprabenthos
• ETS
• Respiration
• Kleiber law
• Mediterranean Sea
• Nephloid layer

ETS is an acronym for the activity of the respiratory electron transport system; the ETS assay is a biochemical method for estimating the "potential" respiration (Phi). We apply this technique to suprabenthic species captured at three depths (250 m, 650 m and 850 m) in two different locations: Cabrera (Algerian subbasin) and Softer (Balearic subbasin) during the IDEADOS survey during summer 2010. The aim of this study was to compare specific Phi between areas and between three depths to identify differences in the suprabenthos physiological state related to nutritional conditions. Specific Phi, expressed in unit of mu l O-2 h(-1) mg prot(-1) was not significantly different between species. Mean values were for the decapods: Plesionika heterocarpus, 8.4 +/- 7.9; Gennadas elegans, 83 +/- 2.9; and Sergestes arcticus 73 +/- 4.6. Within the euphausiids specific Phi averaged 6.5 +/- 4.2 for Thysanopoda aequalis and 9.8 +/- 5.1 for Meganyctiphanes norvegica; while for the mysids it ranged from 7.7 +/- 4.4 for Boreomysis arctica and 2.1 +/- 0.6 for Eucopia unguiculata. The comparison of specific potential respiration Phi, with the pooling of the data of all the species, showed differences between the two locations, being higher in Cabrera. However, no significant differences between the different depths of each locality were found. The slope of the log Phi-log biomass plot was 0.93 +/- 0.09 for Cabrera and 0.64 +/- 0.11 in Saler. We interpret these differences as indicating that the suprabenthos in the Cabrera area, as compared to the Soller area, has been well-nourished.

• 出版日期2014-10