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

Henderson, R. J.; Almatar, S. M.

doi:10.1017/s0025315400029441

Cited by 84 publications

(77 citation statements)

References 25 publications

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“…There is a preferential transfer of (n-3) PUFA from the adipose tissue reserve of brood fish into the egg lipids particularly phosphatidylcholine [20]. It has been observed that phosphatidylcholine is preferentially used to provide metabolic energy [11], implying a relatively large catabolism of (n-3) PUFA.…”

Section: Discussionmentioning

confidence: 99%

Effect of dietary supplementation of fatty acids and vitamins on the breeding performance of the carp Catla catla

et al. 2001

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-Five isonitrogenous diets (∼33% crude protein) were fed to the brood female carp, Catla catla (weighing 3.0 to 5.5 kg), for a period of 93 days in order to observe their breeding performance in earthen ponds. Diet-I (control) contained only basic ingredients like rice bran, groundnut oil cake, roasted soybean meal, fish meal and mineral mixture; diet-II contained added vitamins; diet-III contained added vitamins and vegetable oil (rich in n-6 polyunsaturated fatty acids, PUFA); diet-IV contained added vitamins and fish oil (rich in n-3 PUFA); and diet-V contained added vitamins and a mixture of vegetable and fish oils. The results showed that nutritional quality of the diet considerably influenced breeding performance in the species. The total number of matured females was the highest in the diet-V group and maturity was advanced by 35 days in this group compared to the control. In diet-III and diet-V groups, all the maturated females bred fully and the relative fecundity was increased significantly in diet III, IV and V. The maximum (73.4%) fertilisation rate was observed in the diet-V group, followed by 61.3%, 56.8%, 49% and 22.7% in diet-I, diet-IV, diet-III and diet-II groups respectively. Most of the eggs in the diet-II treatment group remained immature. The various data thus obtained suggest that dietary supplementation of both n-3 and n-6 PUFA, is essential to improve gonadal maturation, breeding performance and spawn recovery in the Catla female broodstock. diet / fatty acid / broodstock / breeding performance / Catla Reprod. Nutr. Dev. 41 (2001) 365-375 365

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Section: Discussionmentioning

confidence: 99%

Effect of dietary supplementation of fatty acids and vitamins on the breeding performance of the carp Catla catla

et al. 2001

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“…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). State-dependent migration constraints could cause deviation from homing in Norwegian spring spawning herring in two major ways.…”

Section: Relations Between Stock Size and Strayingmentioning

confidence: 99%

“…9), which is supported by other studies on captive herring Ma & al. 1998) and wild herring (ANEER 1985;HENDERSON & ALMATAR 1989;RAJASILTA 1992). RAJASILTA (1992) found that fish with high muscular fat reserves had reached maturity stage 3 already in December and would become early spawners, whereas those with low fat content were supposed to spawn significantly later.…”

Section: Effects Of Fish Length and Condition On Spawning Timementioning

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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“…First, compared with the wild situation, the present way of feeding obviously reduced withinyear variation in accumulated body reserves; wild Atlantic herring store significant amounts of body reserves (lipids) in the summer peak feeding period for subsequent use during winter fast (Henderson and Almatar 1989). Nevertheless, for the high-ration group, weight-at-length in January was comparable with that of wild fish across the whole length range.…”

Section: Discussionmentioning

confidence: 94%

Effects of ration on the maturation and fecundity in captive Atlantic herring (<i>Clupea harengus</i>)

Ma¹,

Kjesbu²,

Jørgensen³

1998

Journal canadien des sciences halieutiques et aquatiques

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Abstract:We examined the effects of amount of food on vitellogenic oocyte size and number (fecundity) between two experimental groups of Atlantic herring (Clupea harengus) kept in separate but identical compartments of a large seawater tank. Growth and maturation were monitored for 1.5 years. Each group of 200 fish was fed exclusively on krill. At the end of the experiment, a high-ration group, fed 12 mg⋅g fish -1 ⋅day -1 , had similar weights-at-length as wild specimens of the same stock. A low-ration group fed about half the amount of the high-ration group had significantly lower weights-at-length. Ration had no effect on oocyte size and relative potential fecundity (oocytes per gram), but mean potential fecundity (oocytes per fish) of the low-ration fish was 26% lower than that of the high-ration fish. The relative intensity of early stages of atresia was quantified histologically. Atresia is a common phenomenon in Atlantic herring and increases markedly with suboptimal feeding. Mean relative atretic intensities were estimated at about 3 and 6% for the high-and low-ration groups, respectively, but with large intragroup variation. Modeled realized fecundity (spawned eggs per fish) indicated a 9 and 40% reduction compared with the measured potential fecundities, respectively.Résumé : Nous avons étudié les effets de la quantité de nourriture sur la taille et le nombre (fécondité) d'oocytes vitellogènes chez deux groupes expérimentaux de hareng (Clupea harengus) maintenus dans deux compartiments séparés mais identiques d'un grand réservoir d'eau de mer. Nous avons suivi la croissance et la maturation des poissons durant 1,5 ans. Chaque groupe de 200 poissons était nourri exclusivement de krill. À la fin de l'expérience, les poissons du groupe ayant reçu une forte ration alimentaire, soit 12 mg⋅g de poisson -1 ⋅jour -1 , avaient des poids selon la longueur similaires à ceux de poissons sauvages du même stock. Les poissons du groupe ayant reçu une ration alimentaire faible (environ la moitié moins de celle de l'autre groupe) montraient des poids selon la longueur significativement inférieurs. La ration n'a pas eu d'effet sur la taille des oocytes et la fécondité potentielle relative (oocytes par gramme), mais la fécondité potentielle moyenne (oocytes par poisson) des poissons à faible ration a été de 26% inférieure à celle des poissons à forte ration. L'intensité relative des premiers stades d'atrésie a été quantifiée de façon histologique. L'atrésie est un phénomène courant chez le hareng et son intensité s'accroît de façon marquée quand l'alimentation est sous-optimale. Les intensités relatives moyennes de l'atrésie ont été estimées à environ 3 et 6% dans les groupes à forte ration et à faible ration, respectivement, mais il y avait une grande variation intra-groupe. La fécondité réalisée modélisée (oeufs pondus par poisson) a montré une réduction de 9 et 40%, respectivement, par rapport aux fécondités potentielles mesurées. [Traduit par la Rédaction]

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

Cited by 84 publications

References 25 publications

Effect of dietary supplementation of fatty acids and vitamins on the breeding performance of the carp Catla catla

Effect of dietary supplementation of fatty acids and vitamins on the breeding performance of the carp Catla catla

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

Effects of ration on the maturation and fecundity in captive Atlantic herring (<i>Clupea harengus</i>)

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