1994
DOI: 10.3354/meps108021
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Timing of cod reproduction: interannual variability and the influence of temperature

Abstract: We examined interannual variability in the timing of spawning of female cod Gadus rnorhua from 1947 to 1992 in 3 regions off Newfoundland, Canada, in the northwest Atlantic. Maturity data, assessed by visual examination of dissected gonads of cod collected by research trawls, were analysed with probit regressions to identify the day of each year on which 50% of females had ceased spawnlng (which we refer to as spawning time) on northern [Northwest Atlantic Fisheries Organisation (NAFO) Division 3L] and souther… Show more

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Cited by 104 publications
(70 citation statements)
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“…In addition, factors not considered here may also play an important role. Among such factors are spawning stock size, reproduction, including spawning location and time (Ellertsen et al 1989, Hutchings & Myers 1994, transport of eggs and larvae outside their spawning/nursery grounds (Hinrichsen et al 2001, Ottersen et al 2004a), predation on eggs and larvae (Bailey & Houde 1989, Kempf et al 2009) and competition between species for limited food resources (Kane 1984). These results further illustrate the complexity of the mechanisms involved in the appearance and survival of fish larvae.…”
Section: Predicting Species-specific Response From Climate Variabilitymentioning
confidence: 88%
“…In addition, factors not considered here may also play an important role. Among such factors are spawning stock size, reproduction, including spawning location and time (Ellertsen et al 1989, Hutchings & Myers 1994, transport of eggs and larvae outside their spawning/nursery grounds (Hinrichsen et al 2001, Ottersen et al 2004a), predation on eggs and larvae (Bailey & Houde 1989, Kempf et al 2009) and competition between species for limited food resources (Kane 1984). These results further illustrate the complexity of the mechanisms involved in the appearance and survival of fish larvae.…”
Section: Predicting Species-specific Response From Climate Variabilitymentioning
confidence: 88%
“…metabolic rates, growth rates, swimming rates, oxygen consumption and spawning (Brown et al, 1989;Blaxter, 1992;Hutchings and Myers, 1994;Brander, 1995;Rideout et al, 2000), and at the community level, e.g. geographical distributions and predation rates (Heessen and Daan, 1994;Ottersen et al, 1998;van der Veer and Witte, 1999).…”
Section: Discussionmentioning
confidence: 99%
“…Even though some interannual variability has been reported in the spawning time of cod (Hutchings and Myers 1994;Morgan et al 2013), this variability seems to be captured by the various individual characteristics (e.g., relative liver index) or sampling characteristics (e.g., longitude) we have considered. As a consequence, the interaction between sampling day and CIL area or water temperature anomaly appears not to bring any additional information, and hence, has never been retained in any of the 12 best models.…”
Section: Baulier Et Almentioning
confidence: 99%
“…However, in Subdivision 3Ps, CIL area has a positive effect on the gonadal investment of females, which suggests a different mechanism linking oceanographic conditions and reproductive investment. For example, Hutchings and Myers (1994) found a positive effect of cold water on spawning time and attributed this to cold on-shelf conditions in the area forcing the fish to stay in deeper warmer waters. Water temperature anomaly and CIL area do not have a large influence on our results.…”
Section: Baulier Et Almentioning
confidence: 99%