XVII.—On the bib (Gadus luscus) and poor-cod (G. minutus)
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چکیده
منابع مشابه
Click sounds produced by cod (Gadus morhua).
Conspicuous sonic click sounds were recorded in the presence of cod (Gadus morhua), together with either harp seals (Pagophilus groenlandicus), hooded seals (Cystophora cristata) or a human diver in a pool. Similar sounds were never recorded in the presence of salmon (Salmo salar) together with either seal species, or from either seal or fish species when kept separately in the pool. It is conc...
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Interest in cod aquaculture has been growing over the last few decades, resulting in varied research on cod aimed at optimising conditions for both growth and survival. Cultural conditions may increase the danger of infections. Disease control by vaccination has proved successful in the farming of several fish species. However, cod do not respond well to vaccination. Recently it was shown that ...
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Copepods as feed promote better growth and development in marine fish larvae than rotifers. However, unlike rotifers, copepods contain several minerals such as iodine (I), at potentially toxic levels. Iodine is an essential trace element and both under and over supply of I can inhibit the production of the I containing thyroid hormones. It is unknown whether marine fish larvae require copepod l...
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Increasing numbers of hatchery-produced fish entering marine environments has caused concern over potential fitness depressions in wild populations, yet no study has addressed the likelihood of hybridisation between farmed and wild marine fish. Escape rates of Atlantic cod Gadus morhua L. from commercial net pens have been substantial and there is a risk of interbreeding between depleted local ...
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Foreword There is a great need for more knowledge of the effects on the marine environment of discharges to the sea from the offshore oil and gas industry. The long-term effects in particular are of great interest, as we know very little about them. More knowledge is thus essential if the authorities are to be able to control the development of this sector and to coordinate the exploitation of ...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1888
ISSN: 0374-5481
DOI: 10.1080/00222938809460692