Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 366702
Title Energy content of Antarctic mesopelagic fishes: implications for the marine food web
Author(s) Putte, A. van de; Florentino De Souza Silva, A.P.; Franeker, J.A. van
Source Polar Biology 29 (2006)12. - ISSN 0722-4060 - p. 1045 - 1051.
Department(s) Landscape Centre
Wageningen Marine Research
Publication type Refereed Article in a scientific journal
Publication year 2006
Keyword(s) south shetland islands - king-george-island - proximate composition - fatty-acid - fur seals - arctocephalus-gazella - electrona-antarctica - community structure - feeding ecology - open waters
Abstract For a better understanding of the role of mesopelagic fish in the Southern Ocean food web, the energy and water content of Bathylagus antarcticus, Electrona antarctica and Gymnoscopelus braueri from the Lazarev Sea were investigated. Mean dry weight energy content of B. antarcticus (20.4 kJ g(-1)) was significantly lower than in E. antarctica and G. braueri (both 29.4 kJ g(-1)). In E. antarctica, an increase of dry weight energy density with age was evident from 26.9 kJ g(-1) in juveniles of less than 1 year of age to 32.0 kJ g(-1) in 3-year-old fish. Water content decreased with size in all three species. Abundant high-energy species such as E. antarctica are at a key position in the food web. Due to a marked influence of age on energy content, population structure can be an important variable in estimates of energy fluxes in the Southern Ocean ecosystem.
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