Variations in the Chemical Composition of Herring

Lovern, J. A.; Wood, Henry

doi:10.1017/s0025315400012017

Cited by 56 publications

(28 citation statements)

References 2 publications

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“…Based on the macroscopic appearance of the ovary and testes in the body cavity, maturity stages of females and males were classified with suitable modification as per the ICES scale described by Lovern and Wood (1937). The homogeneity of male and female distribution was determined by Chi-square test using monthly sex ratio.…”

Section: Data On C Hippurus Landed During 2013-2015mentioning

confidence: 99%

Fishery, diet composition and reproductive biology of the dolphinfish Coryphaena hippurus (Linnaeus, 1758) off Karnataka, south-west coast of India

Rajesh¹,

Rohit²,

Abdussamad³

2016

Indian J. Fish.

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Fishery, diet composition and reproductive biology of the dolphinfish Coryphaena hippurus (Linnaeus, 1758) landed along Karnataka Coast during 2013-15 were studied. The estimated average landing of the species in India during the study period was 7975 t of which Karnataka contributed 2.73% (218 t). The fish is mainly exploited by gillnet and also by troll lines operated from trawlers. A few stray specimens were also landed by purse seines. The fork length (FL) was in the range of 32-128 cm and fishes in the length range (FL) of 55-90 cm dominated the catch, contributing 79.8% of the total landings. The most dominant prey item, in terms of occurrence (70.57%) and weight (83.18%) were finfishes followed by cephalopods (19.62% by occurrence and 13.66% by weight) and crustaceans (7.01% occurrence and 1.32% by weight). The index of relative importance (IRI ) values were 85.3, 13.39 and 0.68% respectively for fish, cephalopods and crustaceans respectively. Sex ratio (1:2.05) indicated dominance of females in the fishery. Presence of mature and spent specimens throughout the year suggests that the species spawns all through the year. Peak spawning period was from June to September. This coincided with gradual increase in gonadosomatic index (GSI) values ahead of May which reached a peak during August-September.

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Section: Data On C Hippurus Landed During 2013-2015mentioning

confidence: 99%

Fishery, diet composition and reproductive biology of the dolphinfish Coryphaena hippurus (Linnaeus, 1758) off Karnataka, south-west coast of India

Rajesh¹,

Rohit²,

Abdussamad³

2016

Indian J. Fish.

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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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“…For estimating maturity and ascertaining the spawning periodicity, colour and appearance of gonads, the space occupied in the abdominal cavity and the size of ova were taken into consideration. In the present study, maturity was classified into seven distinct stages (Immature, Developing Virgin/Spent Resting, Early Maturing, Late Maturing, Mature, Running and Partially Spent/Spent) following the International Council for the Exploration of the Seas (ICES) (Lovern and Wood, 1937). Gonads were carefully dissected out from the abdominal cavity and after weighing them to the nearest 0.001 g were preserved in 5% buffered formalin for studies on fecundity and ova diameter.…”

Section: Methodsmentioning

confidence: 99%

Reproductive biology of Nemipterus japonicus (Bloch, 1791) in the trawl grounds along the north-east coast of India

Rao¹,

Ghosh²,

Sreeramulu³

et al. 2017

Indian J. Fish.

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The reproductive biology of Nemipterus japonicus (Bloch, 1791) along the north-east coast of India was studied during 2012-2015 based on samples from the trawl landings at Digha, Paradeep, Visakhapatnam and Kakinada. Adults dominated the landings. Significant contribution by females was observed in most months of the year. Size at first maturity for females was 15.1 cm. Peak spawning season was during August to February and September to March in the northern and southern regions. Maturity and gonado-somatic index (GSI) were found to correlate well with sea surface temperature (SST). Fecundity increased with length and weight and varied from 13,176 to 1,30,798. Ova diameter distribution indicated the species to be a multiple/batch spawner.

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Variations in the Chemical Composition of Herring

Cited by 56 publications

References 2 publications

Fishery, diet composition and reproductive biology of the dolphinfish Coryphaena hippurus (Linnaeus, 1758) off Karnataka, south-west coast of India

Fishery, diet composition and reproductive biology of the dolphinfish Coryphaena hippurus (Linnaeus, 1758) off Karnataka, south-west coast of India

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

Reproductive biology of Nemipterus japonicus (Bloch, 1791) in the trawl grounds along the north-east coast of India

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