Fat Cycles of North Sea Herring

Wood, R. J.

doi:10.1093/icesjms/23.3.390

Cited by 30 publications

(28 citation statements)

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“…The maximum values observed for lipid content are in good agreement with those reported previously for other populations of herring from the waters around the British Isles (Lovern & Wood, 1937;Molloy & Cullen, 1981;Wallace, 1986;Wood, 1958). However, the Clyde herring have somewhat higher maximum lipid contents than herring from the Bering Sea (18%: Kondo, 1974) and the Baltic (3-1 %: Linko et al, 1985).…”

Section: Discussionsupporting

confidence: 89%

Seasonal Changes in the Lipid Composition of Herring (Clupea Harengus) in Relation to Gonad Maturation

Henderson

Almatar

1989

J. Mar. Biol. Ass.

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The lipid contents and composition of carcasses and gonads of spring spawning herring from the Clyde estuary were examined in relation to stage of sexual maturation. Somatic lipid content was highest in stage III fish captured in summer and lowest in spent fish sampled after spawning in March. Triacylglycerols were always the major component of carcass lipid. Little change occurred in the content and class composition of lipid in the gonads of both males and females in relation to stage of maturity. With the exception of spent fish, phosphatidylcholine was the principal lipid of gonads in both sexes. Ovaries were richer in triacylglycerols than the testes. 22:l(n-ll) was the most abundant fatty acid in somatic lipid but was only a minor component of gonadal lipid. Polyunsaturated fatty acids comprised higher proportions of gonadal lipid than reserve body lipid. The relationship between lipid mobilisation and deposition in developing gonads is discussed.

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Section: Discussionsupporting

confidence: 89%

Seasonal Changes in the Lipid Composition of Herring (Clupea Harengus) in Relation to Gonad Maturation

Henderson

Almatar

1989

J. Mar. Biol. Ass.

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“…It increased from an average of 7.6% in February and May to 15.4% in September and subsequently decreased to 12.2% in November. This variation coincides with the cycle of feeding and maturation (Wood, 1957;Iles & Wood, 1965;Henderson & Almatar, 1989).…”

Section: Biological Data and Lipid Contentsupporting

confidence: 65%

Influence of handling procedures and biological factors on the QIM evaluation of whole herring (Clupea harengus L.)

Nielsen

Hyldig

2004

Food Research International

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“…This is consistent with the fact that the metabolic rate in general decreases with body size (WINBERG 1956(WINBERG , 1961 and that optimal swimming speed, defined as the velocity at which the total energy expenditure per unit distance travelled is minimal, increases with the fish size (WARE 1975(WARE , 1978. In addition herring commonly do not feed throughout the wintering and spawning season (ILES 1964;PARSONS & HODDER 1975;CRAWFORD 1980;BRADFORD 1993a), thus during this period they suffer a distinct energy depletion (MILROY 1906;BRUCE 1924;CHANNON & SABY 1932;LOVERN & WOOD 1937;LEIM 1957;WOOD 1958;ILES & WOOD 1965;ACKMAN & EATON 1976;MCGURK & al. 1980;ALMATAR 1989;HENDERSON & ALMATAR 1989).…”

Section: Relations Between Stock Size and Strayingmentioning

confidence: 99%

Effects of fish length and condition on spawning migration in Norwegian spring spawning herring (Clupea harengusL.

Slotte¹

1999

Sarsia

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The photo on the front page is taken by Per Eide Samfoto, Oslo, Norway ISBN 82-7744-050-2 PREFACE The fishery and its management is like all other catch activities dependent on knowledge of the animal' s mode of living. The questions of where and when to find the fish have circulated for centuries. In earlier periods the fishermen were prevented from exploring the open seas, due to the condition of their boats and fishing equipment. Thus, during these periods it was particularly important for them to know the times and areas at which fish were occurring in coastal waters.Throughout centuries the coastal communities in Norway developed based on the knowledge of where and when the herring and other fish occurred along the coast. In general, the herring aggregated in certain areas along the Norwegian coast and at certain times of the year, especially in connection with the spawning in winter. However, the migration patterns of the herring was not always to be relied on, as indicated by the following quotations (after Rollefsen 1966 During the present century it was confirmed that the herring aggregating along the Norwegian coast in winter belong to the Norwegian spring spawning herring stock, which together with the Icelandic spring and summer spawners form the Atlanto-Scandian herring group. The Norwegian spring spawning herring is known as one of the largest fish stocks in the world, which may cover large parts of the north-eastern Atlantic migrating between nursery areas, feeding areas, wintering areas and spawning areas. However, the stock size has fluctuated and the migration pattern has varied over the years. One may say that this herring stock moves in mysterious ways. Despite extensive research efforts on this stock in the past, there exist no definite explanations to its migration behaviour. Thus, studies on the migrations of Norwegian spring spawning herring are still relevant, and will probably be so for many years ahead.In the present thesis I aim to increase the knowledge of factors influencing the spawning migration of Norwegian spring spawning herring. I hypothesise that both the time and location of spawning is influenced by the following aspects of population structure: the age and length composition, the composition with respect to nursery area of origin, and composition with respect to body condition (amount of energy reserves). The main period of my analyses is the 1990s, when spawning migration have commenced from the wintering area in the Vestfjord system, northern Norway (68°N), towards the spawning grounds situated between 58°and 70°N.

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Fat Cycles of North Sea Herring

Cited by 30 publications

References 0 publications

Seasonal Changes in the Lipid Composition of Herring (Clupea Harengus) in Relation to Gonad Maturation

Seasonal Changes in the Lipid Composition of Herring (Clupea Harengus) in Relation to Gonad Maturation

Influence of handling procedures and biological factors on the QIM evaluation of whole herring (Clupea harengus L.)

Effects of fish length and condition on spawning migration in Norwegian spring spawning herring (Clupea harengusL.

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