How can the stock recruitment relationship of the Barents Sea capelin (Mallotus villosus) be improved by incorporating biotic and abiotic factors?

Mikkelsen, Nina; Pedersen, Torstein

doi:10.3402/polar.v23i1.6262

Cited by 7 publications

(9 citation statements)

References 19 publications

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“…Ottersen & Loeng (2000) also suggested that high temperatures caused increased prey production in the Barents Sea, which led to higher growth rates and higher survival through the vulnerable larval and juvenile stages. Mikkelsen & Pedersen (2004) showed that capelin recruitment in the Barents Sea is positively correlated with higher water temperatures, whereas Stocker et al (1985) found a dome-shaped relationship between temperature and spawning success with an optimal temperature during larval stages resulting in maximum production of recruits in the Strait of Georgia. Several field and experimental studies have shown that Baltic herring egg mortality may increase for very high values of water temperature that can cause abnormalities to the embryos and larvae (Raid 1991), inhibit herring spawning (Parmanne et al 1997 and references therein), and increase the risk of bacterial and fungal infections (Rajasilta et al 1993).…”

Section: Discussionmentioning

confidence: 98%

Effect of environmental variability and spawner characteristics on the recruitment of Baltic herring Clupea harengus populations

Cardinale¹,

Möllmann²,

Bartolino³

et al. 2009

Mar. Ecol. Prog. Ser.

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We analyzed recruitment -environment relationships for 5 distinct Baltic Sea herring stocks inhabiting the areas of the Western Baltic (WBH), the Main Basin (MBH), the Gulf of Riga (GRH), the Bothnian Sea (BSH) and the Bothnian Bay (BBH). A number of hydro-climatic and biological predictors were tested for their effect on recruitment. Temperature was determined to be an important predictor for 3 of the stocks (MBH, GRH and BSH). However, spawning stock biomass was the major factor explaining recruitment for GRH and weight-at-age of the spawners was an important predictor of MBH recruitment. For 2 out of 4 stocks for which complete zooplankton data were available (BSH and MBH), food supply was also a significant predictor, suggesting that changes in climate and/or food web structure may indirectly affect herring recruitment via prey availability for the recruits or spawners. Our results emphasize both similarities and differences in the main regulators of recruitment dynamics for the 5 stocks that should be taken into consideration in the development of area-specific management strategies throughout the Baltic Sea basin.

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Section: Discussionmentioning

confidence: 98%

Effect of environmental variability and spawner characteristics on the recruitment of Baltic herring Clupea harengus populations

Cardinale¹,

Möllmann²,

Bartolino³

et al. 2009

Mar. Ecol. Prog. Ser.

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“…The alternative Ricker model (Ricker, 1954; Bjorkstedt, 2000) is assumed to describe the stock‐recruitment relationship better than the Beverton‐Holt given significant cannibalism. When modified Beverton‐Holt and Ricker stock‐recruitment models were fitted to time series, however, the Beverton‐Holt model was superior to the Ricker model in explaining recruitment variation in the Barents Sea capelin (Mikkelsen & Pedersen, 2004), indicating that cannibalism is not a significant factor regulating recruitment.…”

Section: Possible Implications For Stock Recruitment and Assessmentmentioning

confidence: 98%

Egg cannibalism in Barents Sea capelin in relation to a narrow spawning distribution

Slotte

Mikkelsen

Gjøsæter

2006

Journal of Fish Biology

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The spawning distribution of Barents Sea capelin Mallotus villosus off northern Norway in 2002 was restricted to a narrow area at the easternmost spawning grounds. There was an increase in abundance and a marked shift in aggregation area from east towards west during 11 March to 4 April, as the capelin went from prespawning through spawning to spent stages. The capelin stomachs were either empty or contained capelin eggs, often mixed with sand. Both the occurrence of cannibals and stomach fullness increased with stage of maturity, being highest in spent fish, and higher in males than in females. No differences were found between cannibals and non-cannibals of the same sex when adjusted for total length (L T ), age, L T at age and condition factor. At similar stomach fullness, the females had consumed more eggs than the males. This was attributed to a higher proportion of empty and broken eggs and less sand in females compared to males. In the full stomachs, the mean consumption in females and males was 623 and 334 eggs, respectively, whereas the respective maximum egg consumption was 871 and 683 eggs. The minimum estimates (given no digestion) of mean AE 95% CL egg consumption in spent females and males were 75Á4 AE 6Á9 and 58Á4 AE 12Á0 eggs, respectively, implying a minimum mortality of 1-2% of the total egg production caused by cannibalism.

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“…Relatively simple linear or non-linear statistical models based on time series analysis of recruitment in relation to stock size and environmental factors, such as food availability, predation, turbulence and temperature, have been developed for some species (e.g. van Deurs et al 2009;Fiksen and Slotte 2002;Lindegren et al 2012;Mikkelsen and Pedersen 2004;Wilderbuer et al 2013). Causality may be discovered during modelling, but cannot be inferred from correlations alone.…”

Section: Introductionmentioning

confidence: 99%

First‐year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey

Jansen

2016

Fisheries Oceanography

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Mackerel (Scomber scombrus) is one of the ecologically and economically most important fish species in the Atlantic. Its recruitment has, for unknown reasons, been exceptional from 1998 to 2012. The majority (75%) of the survivors in the first winter were found north of an oceanographic division at approximately 52°N, despite the fact that mackerel spawns over a wide range of latitudes. Multivariate time series modelling of survivor abundance in the north revealed a significant correlation with the abundance of copepodites (stage I–IV) of Calanus sp. in the spawning season (April to June). The copepodites were a mix of C. helgolandicus (dominating) and C. finmarchicus. The growth of mackerel larvae is known to be positively related to the availability of nauplii and copopodites of preferred prey species, namely, large calanoid copepod species such as Calanus. The statistical relationship between mackerel survivors and abundance of Calanus, therefore, most likely, reflected a causal relationship: high availability of Calanus probably reduced starvation, stage‐specific predation and cannibalism (owing to prey switching). The effects of other abundant, but less preferred zooplankton taxa, (Acartia sp., Branchiopoda spp. and Echinodermata spp. larvae), as well as stock size, temperature and wind‐induced turbulence were not found to be significant. However, stock size was retained in the final model because of a significant interaction with Calanus in oceanic areas west of the North European continental shelf. This was suggested to be a consequence of a density driven expansion of the spawning area that increased the overlap between early life stages of mackerel and food (Calanus) in new areas.

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How can the stock recruitment relationship of the Barents Sea capelin (Mallotus villosus) be improved by incorporating biotic and abiotic factors?

Cited by 7 publications

References 19 publications

Effect of environmental variability and spawner characteristics on the recruitment of Baltic herring Clupea harengus populations

Effect of environmental variability and spawner characteristics on the recruitment of Baltic herring Clupea harengus populations

Egg cannibalism in Barents Sea capelin in relation to a narrow spawning distribution

First‐year survival of North East Atlantic mackerel (Scomber scombrus) from 1998 to 2012 appears to be driven by availability of Calanus, a preferred copepod prey

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