Replacement of Antarctic krill (Euphausia superba) by extruded feeds with different proximate compositions: effects on growth, nutritional condition and digestive capacity of juvenile European lobsters (Homarus gammarus, L.)
نویسندگان
چکیده
منابع مشابه
Lipids as markers of nutritional condition and diet in the Antarctic krill Euphausia superba and Euphausia crystallorophias during austral winter
To understand the nutritional condition and feeding history of Antarctic krill during winter, Euphausia superba and E. crystallorophias were collected by MOCNESS during July–August 2001 in Maguerite Bay southeast of Adelaide Island. Total lipid, lipid classes, fatty acids, fatty alcohols and sterols were analyzed in animals among several life stages. Lipids in seston and major copepods represen...
متن کاملThe opsin repertoire of the Antarctic krill Euphausia superba.
The Antarctic krill Euphausia superba experiences almost all marine photic environments throughout its life cycle. Antarctic krill eggs hatch in the aphotic zone up to 1000m depth and larvae develop on their way to the ocean surface (development ascent) and are exposed to different quality (wavelength) and quantity (irradiance) of light. Adults show a daily vertical migration pattern, moving do...
متن کاملSize Selection of Antarctic Krill (Euphausia superba) in Trawls
Trawlers involved in the Antarctic krill (Euphausia superba) fishery use different trawl designs, and very little is known about the size selectivity of the various gears. Size selectivity quantifies a given trawl's ability to catch different sizes of a harvested entity, and this information is crucial for the management of a sustainable fishery. We established a morphological description of kr...
متن کاملMonthly Variations in the Nutritional Composition of Antarctic Krill Euphausia superba
The proximate composition and various specific components of Antarctic krill Euphausia superba, in the catch season between March and August were investigated. Frozen krill were freeze-dried and milled. The proximate composition comprised water, proteins, fats, ash, fatty acids, and amino acids, while the specific components were vitamins, minerals, nucleotides, betaine, and astaxanthin. The mo...
متن کاملAmong-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Understanding the temporal variability in vital rates (e.g. growth and survivorship) of wild populations is practically and statistically difficult but crucial for connecting such variation to mechanistic drivers and their population consequences. For somatic growth, empirical estimates of variation are rare because they often require expensive long-term tag-recapture programs. In marine pelagi...
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ژورنال
عنوان ژورنال: Journal of Nutritional Science
سال: 2021
ISSN: 2048-6790
DOI: 10.1017/jns.2021.27