EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Temperature-dependent energy allocation to growth in Antarctic and boreal eelpout Zoarcidae


Polar Biology 30(1): 95-107
Temperature-dependent energy allocation to growth in Antarctic and boreal eelpout Zoarcidae
Antarctic fishes display slower annual growth rates than congeneric species from temperate zones. For an analysis of growth in relation to energy turnover, body composition was analysed in two benthic fish species to establish a whole animal energy budget. The Antarctic eelpout, Pachycara brachycephalum, was maintained at 0, 2, 4 and 6 degrees C and the boreal eelpout, Zoarces viviparus at 4, 6, 12 and 18 degrees C. At maximum food supply the weight gain was highest for P. brachycephalum at 4 degrees C. Routine metabolic rate in acclimated Antarctic eelpouts did not differ between temperatures, whereas in Z. viviparus maximized growth benefited from a reduction of metabolic energy demands at 12 degrees C. The lipid content of liver declined with increasing temperature in both species. The thermal window for growth is based on food conversion efficiency and the level of metabolic energy demand and is limited according to the level of aerobic scope available between pejus temperatures.


Accession: 033670458

DOI: 10.1007/s00300-006-0165-y



Related references

Temperature-dependent energy allocation to growth in Antarctic and boreal eelpout (Zoarcidae). Polar Biology 30(1): 95-107, 2006

Temperature-dependent pH regulation in stenothermal Antarctic and eurythermal temperate eelpout (Zoarcidae): An in-vivo NMR study. Polar Biology 24(11): 869-874, 2001

Temperature-dependent lipid levels and components in polar and temperate eelpout (Zoarcidae). Fish Physiology and Biochemistry 34(3): 261-274, 2008

Barbapellis pterygalces, new genus and new species of a singular eelpout Zoarcidae Teleostei from the Antarctic deep waters. Polar Biology 35(2): 215-220, 2012

Aerobic mitochondrial capacities in Antarctic and temperate eelpout (Zoarcidae) subjected to warm versus cold acclimation. Polar Biology 28(8): 575-584, 2005

Temperature-dependent protein synthesis capacities in Antarctic and temperate (North Sea) fish (Zoarcidae). Journal of Experimental Biology 208(Pt 12): 2409-2420, 2005

Biological and environmental drivers of energy allocation in a dependent mammal, the Antarctic fur seal pup. Physiological and Biochemical Zoology 85(2): 134-147, 2012

State-dependent energy allocation in the pelagic Antarctic silverfish Pleuragramma antarcticum: trade-off between winter reserves and buoyancy. Marine Ecology Progress Series 326: 269-282, 2006

State-dependent energy allocation in the pelagic Antarctic silverfish Pleuragramma antarcticum trade-off between winter reserves and buoyancy. Marine Ecology Progress Series 326: 269-282, 2000

Seasonal changes in energy allocation to somatic and reproductive body components of the common cold temperature sea urchin Loxechinus albus in a Sub-Antarctic environment. Polar Biology 31(4): 443-449, 2008