The Duration of Maturation Stages in Herring

Iles, T. D.

doi:10.1093/icesjms/29.2.166

Cited by 52 publications

(32 citation statements)

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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 Strayingsupporting

confidence: 73%

“…Paper I demonstrated that the herring, with few exceptions, did not feed during the wintering and spawning season 1994-95 and 1995-96, as also shown elsewhere (ILES 1964;PARSONS & HODDER 1975;CRAWFORD 1980;BRADFORD 1993a). Instead the energy utilised for gonad development and metabolism was drawn from reserves stored during the summer feeding period.…”

Section: Synopsis Energy Utilisation During Wintering and Spawning MImentioning

confidence: 55%

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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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Section: Relations Between Stock Size and Strayingsupporting

confidence: 73%

Section: Synopsis Energy Utilisation During Wintering and Spawning MImentioning

confidence: 55%

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

Slotte¹

1999

Sarsia

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“…During the late maturity stages (February 1994), GSI of males was significantly higher than that of females. Testes growth precedes ovary growth and males mature earlier than females (Iles 1964;Ware and Tanasichuk 1989). In contrast with our observations, Gillis et al (1990) found that the mean GSI values for males were always lower than those for females from the time of population ovulation until the end of the spawning season.…”

Section: Figcontrasting

confidence: 99%

“…The length of the overwinter period differs among stocks. Besides, herring have been shown to be able to hold off spawning for several days, perhaps awaiting environmental cues (Iles 1964;Ware and Tanasichuk 1989). Thus, the present oocyte growth curve might fail to determine the exact spawning time.…”

Section: Figmentioning

confidence: 98%

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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“…The allocation of energy into male reproductive tissue (primarily sperm production) varies among species, populations, individuals and time (seasonally and annually) (Sorokin 1960;Iles 1964;Burton and Idler, 1984;Berner, 1985;Rijnsdorp, 1990;Tomkiewicz and Köster, MS 1999;. Given this variability, and that it may have some bearing on recruitment, it is noteworthy to establish procedures for measuring energetic investment in spermatogenesis.…”

Section: Sex Ratio Maturity Stage Of Spawning and Gonadosomatic Indexmentioning

confidence: 99%

Estimation of Male Reproductive Success of Marine Fisheries

Trippel¹

2003

J. Northw. Atl. Fish. Sci.

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The subject of reproductive potential of fish populations is dominated by studies on the female gender. Studies on male reproduction are relatively few, but have increased in number during the previous decade. The objectives of this contribution were to describe and quantify the reproductive traits that make up the viable sperm production of a population. Some of these reproductive traits were easily measured from wild fish (e.g., mature testes weight), and others were more easily measured on captive fish (e.g., fertilization potential and sperm motility). Results of laboratory and field studies were then integrated to generate estimates of viable sperm production of a fish stock. A number of experimental protocols have been employed over the years to assess male fertility. The strengths and weaknesses of the different experimental approaches were reviewed and appropriate recommendations given towards establishing standardized protocols. Although the review is broad in nature, and includes references to a number of marine fishes, it concentrated on exploited species that occur in the North Atlantic and Baltic Sea within the taxonomic groups gadoidae, pleuronectoidae and clupeidae (Clupeiformes). In addition, published data on male reproductive traits of species in these taxa were tabulated and summarized. The terms of interest included sex ratio, maturity state, testes weight, sperm fertilization potential (artificial fertilization and paired mating), sperm density, sperm motility and paternal effects on early life history traits.An equation for determinate spawners was described that quantifies a population's viable sperm production using data on adult body characteristics and associated quantity and quality of sperm. The equation was used to establish time series of viable sperm production for Atlantic cod (Gadus morhua) of Newfoundland and Labrador. Results indicated on average 1 600 billion viable sperm were released to produce one recruit at age 3 years but with substantial variation among years in relation to changes in stock composition and growth as well as stock size. Distinct peaks in the number of viable sperm in 1981 and 1986 corresponded to distinct peaks in the number of age 3 recruits in those same years.

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The Duration of Maturation Stages in Herring

Cited by 52 publications

References 0 publications

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

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>)

Estimation of Male Reproductive Success of Marine Fisheries

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