Fecundity, atresia, and spawning strategies of Atlantic herring (Clupea harengus)

2009 ◽  
Vol 66 (12) ◽  
pp. 2130-2141 ◽  
Author(s):  
Cindy J.G. van Damme ◽  
Mark Dickey-Collas ◽  
Adriaan D. Rijnsdorp ◽  
Olav S. Kjesbu
Keyword(s):  
Energy Content ◽  
The Body ◽  
Clupea Harengus ◽  
Oocyte Development ◽  
Atlantic Herring ◽  
Down Regulation ◽  
The North ◽  
Spawning Areas ◽  
High Level ◽  
Autumn And Winter

Atlantic herring ( Clupea harengus ) have contrasting spawning strategies, with apparently genetically similar fish “choosing” different spawning seasons, different egg sizes, and different spawning areas. In the North Sea, both autumn- and winter-spawning herring share the same summer feeding area but have different spawning areas. Females of both spawning types start their oocyte development in April–May. Oocyte development is influenced by the body energy content; during the maturation cycle, fecundity is down-regulated through atresia in relation to the actual body condition. Hence, fecundity estimates must account for the relative time of sampling. The down-regulation over the whole maturation period is approximately 20% in autumn- and 50% in winter-spawning herring. The development of the oocytes is the same for both spawning strategies until autumn when autumn spawners spawn a larger number of small eggs. In winter spawners, oocyte development and down-regulation of fecundity continues, resulting in larger eggs and lower number spawned. In theory, autumn and winter spawners could therefore switch spawning strategies, indicating a high level of reproductive plasticity.

Spawning of Herring in Milford Haven

1985 ◽  
Vol 65 (3) ◽  
pp. 629-639 ◽  
Author(s):  
D. R. Clarke ◽  
P. E. King
Keyword(s):  
Clupea Harengus ◽  
Atlantic Herring ◽  
Spawning Grounds ◽  
North East ◽  
The North ◽  
Quantitative Studies ◽  
Spawning Areas ◽  
Newly Hatched Larvae ◽  
Selection Of ◽  
Made In

Information regarding spawning grounds of the Atlantic herring Clupea harengus Linnaeus has been based mainly on the collection of spawning fish, newly hatched larvae, or the presence of eggs within the stomachs of predators (Postuma, Saville & Wood, 1977). This type of evidence indicates general areas of spawning, rather than accurately delineating the spawning grounds. Though samples of spawn have been obtained from several localities in the North-East Atlantic (Ewart, 1884; Runnström, 1941; Fridriksson & Timmerman, 1951; Bolster & Bridger, 1957; Parrish et al. 1959; Hemmings, 1965; Bowers, 1969; Anthony, Sauskan & Sigaer, 1970), few quantitative studies of individual grounds have been made. In consequence, little is known of the factors influencing the selection of grounds by Atlantic herring, the shape of these grounds and egg distribution within spawning areas.

scholarly journals Spatial and temporal variation in body mass and the blubber, muscle and visceral fat content of North Atlantic common minke whales

2020 ◽  
Vol 21 (1) ◽  
pp. 59-70
Author(s):  
Thorvaldur Gunnlaugsson
Keyword(s):  
Body Mass ◽  
North Atlantic ◽  
Visceral Fat ◽  
Energy Content ◽  
Posterior Part ◽  
The Body ◽  
Spatial And Temporal Variation ◽  
Total Body Mass ◽  
The North ◽  
Minke Whales

The exponent for predicting total body mass from length has been studied in many species and here data on common minke whales from areas in the North Atlantic is added from both Icelandic and Norwegian research catches. The exponent was found to be not significantly different from 3. In addition seasonal changes in body mass and in the parts of blubber, muscle and visceral fat are reported. The exponent for how blubber mass increases with length is lower than 3. In all cases a significant increase over the season was detected, in particular for the mature animals, and also in girth measurements, particularly at the posterior part of the body. Pregnant females had significantly more blubber than other whales. These results agree with studies on blubber thickness measurements and tissue energy content of Icelandic baleen whales and observed changes in the ecosystem around Iceland during the research period.

scholarly journals Reconstruction of Atlantic herring ( Clupea harengus ) recruitment in the North Sea for the past 455 years based on the δ 13 C from annual shell increments of the ocean quahog ( Arctica islandica )

2019 ◽  
Vol 20 (3) ◽  
pp. 537-551 ◽  
Author(s):  
Juan Estrella‐Martínez ◽  
Bernd R. Schöne ◽  
Ruth H. Thurstan ◽  
Elisa Capuzzo ◽  
James D. Scourse ◽  
...  
Keyword(s):  
North Sea ◽  
Clupea Harengus ◽  
Atlantic Herring ◽  
Arctica Islandica ◽  
The Past ◽  
The North ◽  
The North Sea

Storm-Induced Atlantic Herring (Clupea harengus) Egg Mortality in Baltic Sea Inshore Spawning Areas

2017 ◽  
Vol 41 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Dorothee Moll ◽  
Paul Kotterba ◽  
Lena von Nordheim ◽  
Patrick Polte
Keyword(s):  
Baltic Sea ◽  
Clupea Harengus ◽  
Atlantic Herring ◽  
Egg Mortality ◽  
Spawning Areas

The content of mercury and lead in the feed base of valuable fish species of the Caspian Sea

Fisheries ◽  
2021 ◽  
Vol 2021 (4) ◽  
pp. 10-14
Author(s):  
Tatiana Ershova ◽  
Vladimir Chaplygin ◽  
Vyacheslav Zaitsev ◽  
Alisher Khursanov ◽  
Natalia Shaboyants
Keyword(s):  
Caspian Sea ◽  
Chemical Elements ◽  
Essential Elements ◽  
The Body ◽  
The Caspian Sea ◽  
Rhithropanopeus Harrisii ◽  
The North ◽  
Living Organisms ◽  
Taxonomic Groups ◽  
High Level

Mercury and lead are not essential elements and have a high degree of toxicity to all groups of living organisms, including hydrobionts. In turn, the accumulation of dangerous chemical elements in the primary trophic units of marine ecosystems is also reflected in the high level of accumulation and toxication of fish-valuable objects of fishing. As part of the study of the ecological state of the biota of the Volga-Caspian basin, there is a need to study the concentrations of heavy metals such as mercury and lead. The aim of the work is to study the content of mercury and lead in some invertebrate species of the Caspian Sea. The main source of mercury and lead in the body of the studied species is the water of the north-western part of the Caspian Sea. Among the studied taxonomic groups of organisms, mercury accumulators were all species of mollusks, as well as Balanus improvises and Rhithropanopeus harrisii. The lead concentrating organisms were Cerastoderma lamarcki and Mytilaster lineatus, Rhithropanopeus harrisii, and Balanus improvises.

Anisakis simplex (Nematoda: Anisakidae) Infection of the Musculature and Body Cavity of Atlantic Herring (Clupea harengus harengus)

1986 ◽  
Vol 43 (7) ◽  
pp. 1312-1317 ◽  
Author(s):  
S. E. McGladdery
Keyword(s):  
Acid Solution ◽  
East Coast ◽  
Body Cavity ◽  
The Body ◽  
Anisakis Simplex ◽  
Clupea Harengus ◽  
The Other ◽  
Fluorescent Light ◽  
Atlantic Herring ◽  
Clupea Harengus Harengus

The fillets and body cavities of the 305 Atlantic herring (Clupea harengus harengus) collected from six locations around the east coast of Canada were examined for Anisakis simplex larvae. The fillets were checked by candling over a fluorescent light and by digestion in a pepsin – HCl acid solution. The results demonstrated the inaccuracy of candling as a technique for detecting A. simplex larvae in the musculature of herring. Anisakis simplex larvae were found in the muscle of 7.9% of the herring examined, and all herring with fillet infections were from one sample collected from southern Newfoundland in February 1983. All had over 15 larvae in the body cavity. Since none of the other herring examined had over eight larvae in the body cavity, I concluded that most Canadian Atlantic herring are safe for consumption raw, salted, smoked, or pickled. The results from Canadian Atlantic herring were compared with those from herring collected by Smith and Wootten from around Britain. The only Canadian Atlantic herring found with a similar level of infection to those were from southern Newfoundland.

scholarly journals Dynamics of changes in protein metabolism rates in cows depending on the season of the year and the location of the farm

2019 ◽  
Vol 21 (93) ◽  
pp. 164-168
Author(s):  
U. M. Vus ◽  
O. V. Kozenko
Keyword(s):  
Total Protein ◽  
Protein Metabolism ◽  
Ecological Status ◽  
The State ◽  
The Body ◽  
State Chemical ◽  
High Level ◽  
And Function ◽  
Internal And External Factors ◽  
Autumn And Winter

Protein metabolism in animals is perhaps the most informative indicator of anthropogenic environmental pollution, because it provides an opportunity to characterize metabolic processes in the body. They are of the utmost importance for the structure and function of all cells, tissues and organs. Proteins reflect the state of the organism, as well as those changes that occur in it under the influence of internal and external factors. We studied the dynamics of changes in indicators in protein metabolism in cows depending on the season of the year and the location of a farm. The research was carried out in two farms of the Lviv region: the Danylo Halytskyj LLC, near the State Mining and Chemical Enterprise “Sirka”, and FE “Lelyk” of Zhovkva district, in spring, summer, autumn and winter periods of keeping. The object of research was the blood of 20 cows of Ukrainian Black-Spotted breed. According to the results of the research, a reduction in total protein, relative to the physiological norm of 0.45 g/l. in spring, and by 0.64 g/l in the summer, dysproteinemia, a high level of gamma globulin fraction (50.30%) in cows from the Danylo Halytskyj farm, located in the zone of influence of the State Chemical Medicine Plant “Sirka”. In animals FE Lelyk, located in the conventionally clean zone, this indicator was significantly higher, and was 76.14 g/l in spring, and 78.17 g/l in summer, and also in animals of this farm dysproteinemia was not observed. In the autumn, at the end of the summer grazing period of the keeping, the index of total protein tended to decrease in the animals of the Danylo Halytsky's Ltd., and in winter it was normalized and invested in the limits of the physiological norm. Albumin fraction of protein in this group of animals, throughout the search period, had a tendency to increase. In the cows of the FE “Lelyk”, the indices of protein metabolism were within the limits of the physiological norm in all periods of research, with the inherent fluctuations in the season of the year. The obtained results due to the content of total protein and protein fractions in the plasma of blood of cows kept in territories with different ecological status indicate that the effect of the activity of the State Chemical Medicine Plant “Sirka” is sufficiently strong on the organism of animals.

scholarly journals Using long and linked reads to improve an Atlantic herring (Clupea harengus) genome assembly

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sunnvør í Kongsstovu ◽  
Svein-Ole Mikalsen ◽  
Eydna í Homrum ◽  
Jan Arge Jacobsen ◽  
Paul Flicek ◽  
...  
Keyword(s):  
North Atlantic ◽  
Genome Assembly ◽  
De Novo ◽  
Clupea Harengus ◽  
Atlantic Herring ◽  
The North ◽  
Long Reads ◽  
Mate Pair ◽  
The World ◽  
Crucial Part

AbstractAtlantic herring (Clupea harengus) is one of the most abundant fish species in the world. It is an important economical and nutritional resource, as well as a crucial part of the North Atlantic ecosystem. In 2016, a draft herring genome assembly was published. Being a species of such importance, we sought to independently verify and potentially improve the herring genome assembly. We sequenced the herring genome generating paired-end, mate-pair, linked and long reads. Three assembly versions of the herring genome were generated based on a de novo assembly (A1), which was scaffolded using linked and long reads (A2) and then merged with the previously published assembly (A3). The resulting assemblies were compared using parameters describing the size, fragmentation, correctness, and completeness of the assemblies. Results showed that the A2 assembly was less fragmented, more complete and more correct than A1. A3 showed improvement in fragmentation and correctness compared with A2 and the published assembly but was slightly less complete than the published assembly. Thus, we here confirmed the previously published herring assembly, and made improvements by further scaffolding the assembly and removing low-quality sequences using linked and long reads and merging of assemblies.

Hyponeustonic Fish Larvae in the Northumberland Strait During Summer 1962

1976 ◽  
Vol 33 (5) ◽  
pp. 1167-1174 ◽  
Author(s):  
Daniel J. Faber
Keyword(s):  
Surface Waters ◽  
Fish Larvae ◽  
Clupea Harengus ◽  
Atlantic Herring ◽  
Tautogolabrus Adspersus ◽  
Sand Lance ◽  
Atlantic Mackerel ◽  
Cyclopterus Lumpus ◽  
The North ◽  
Clupea Harengus Harengus

A neuston net with mesh openings of 1.3 mm was towed in the surface waters of the north basin of the Northumberland Strait at irregular intervals from mid-June to mid-September 1962. Fifteen genera of teleost larvae belonging to 11 families were collected. Of these, the following eight species occurred in regular abundance and were termed "abundant larvae": sand lance, Ammodytes americanus; radiated shanny, Ulvaria subbifurcata; lumpfish, Cyclopterus lumpus; fourbeard rockling, Enchelyopus cimbrius; Atlantic mackerel, Scomber scombrus; cunner, Tautogolabrus adspersus; white hake, Urophycis tenuis; and Atlantic herring, Clupea harengus harengus. Larvae were collected in variable numbers, with the sampling data suggesting they were aggregated in the water. The total abundance of all larvae was about 50 larvae per tow except for a peak in July. The regular appearance of the "abundant larvae" resulted in unique combinations of spawning and hatching times for each species. The larvae of spring-spawners were present in June and were gradually replaced by the larvae of summer-spawners.

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