open access

https://hdl.handle.net/2115/59729

Metabolism and chemical composition of mysid crustaceans: synthesis toward a global-bathymetric model

Synthesis towards a global-bathymetric model of metabolism and chemical composition of mysid crustaceans

英語

respiration

2013-07

Elsevier

Journal of Experimental Marine Biology and Ecology

445

79-87

Respiration and ammonia excretion data and chemical composition data [water content, ash, carbon (C), nitrogen (N) and C:N ratios] of 13–32 mysids from freshwater, coastal littoral, epipelagic and abyssopelagic zones of the world's oceans were compiled. The independent variables including body mass, habitat temperature and sampling depth were all significant predictors of respiration, accounting for 74–85% of the variance in the data, while body mass and habitat temperature were significant predictors of ammonia excretion, accounting for 85–86% of the variance. Atomic O:N ratios (respiration: ammonia excretion) ranged from 7.9 to 44.8 (median: 18.7), indicating protein-oriented metabolism. Body water content and ash were not correlated with body mass, habitat temperature and sampling depth, but C composition and N composition increased and decreased, respectively, with the increase of sampling depth. As judged by C:N ratios, protein was considered to be the major organic component of most mysids. However, some deep-sea mysids exhibited high C:N ratios (8.6–10.6), suggesting a predominance of lipids in the body.

学術雑誌論文

Accepted Manuscript

0022-0981