Pre-settlement processes of northern rock sole (Lepidopsetta polyxystra) in relation to interannual variability in the Gulf of Alaska

Fedewa, Erin J.; Miller, Jessica A.; Hurst, Thomas P.

doi:10.1016/j.seares.2015.11.008

Cited by 6 publications

(3 citation statements)

References 51 publications

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“…Other environmental variables are also known to impact larval dynamics. For example, in both laboratory experiments and field studies, the time required for rock sole larvae to reach metamorphosis and settle to demersal juvenile habitats has been shown to be affected by water temperature (Laurel et al ., ; Fedewa et al ., ). These results suggest that for some species, factors other than the direct, energetic effects of acidification are most likely to determine population productivity under future climate conditions.…”

Section: Discussionmentioning

confidence: 97%

Elevated CO₂ does not exacerbate nutritional stress in larvae of a Pacific flatfish

Hurst

Laurel

Hanneman

et al. 2017

Fisheries Oceanography

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Multiple aspects of climate change are expected to co‐occur such that ocean acidification will take place in conjunction with warming and a range of trophic changes. Previous studies have demonstrated that nutritional condition plays a significant role in the responses of invertebrates to ocean acidification, but similar studies have yet to be conducted with marine fishes. In this study, we examined the potential interactive effects of elevated CO2 levels and nutritional stress on the growth and development of northern rock sole (Lepidopsetta polyxystra). Separate experiments examined the effects of these two environmental stressors during the pre‐flexion (3–31 days) and post‐flexion (31–87 days) larval stages. In both stages, the larval feeding regime has a much larger impact on growth rates than did the CO2 level, and there was no observed interaction between stressors. By 31 days post‐hatch, larvae in the high‐feeding treatment were 84.2% heavier than the fish in the low‐feeding treatments, but there was no significant effect of CO2 level on body size or condition. While overall growth rates were faster during the pre‐flexion stage, the effects of food limitation were greater for post‐flexion larvae undergoing metamorphosis, with the high‐feeding treatment fish being 3.3 times as heavy as fish in the low‐feeding treatments. These results have important implications for understanding the impacts of the multi‐faceted nature of climate change on population productivity of commercial fish species in the North Pacific.

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Section: Discussionmentioning

confidence: 97%

Elevated CO₂ does not exacerbate nutritional stress in larvae of a Pacific flatfish

Hurst

Laurel

Hanneman

et al. 2017

Fisheries Oceanography

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“…This has led researchers to value otolith examinations as a reliable tool for estimating fish growth rates (Campana, 1992). In the present study, upon verifying a robust relationship between otolith radius (OR) and SL (Pearson's r ≥ 0.94, p < 0.001) the width of daily increments in the otolith was utilized as a proxy for the daily somatic growth of juveniles (Fedewa et al, 2016; Oshima et al, 2010).…”

Section: Methodsmentioning

confidence: 93%

Post‐settlement dynamics of Japanese flounder Paralichthys olivaceus in Tango Bay: Seasonal patterns in growth, mortality, and recruitment potential

Bhandare,

Suzuki,

Masuda

et al. 2024

Journal of Fish Biology

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Japanese flounder Paralichthys olivaceus is one of the most valuable coastal flatfish species in East Asia. To investigate post‐settlement growth and mortality, juveniles were sampled in Tango Bay (Japan) weekly throughout the settlement period in 2007 and 2008. Otolith (lapillus) microstructure analysis enabled the categorization of juveniles into six biweekly cohorts each year. Later cohorts exhibited higher growth rates possibly because of higher water temperatures. A key observation was the direct relationship between high mortality and high density in mid‐season cohorts in both years, pointing to density‐dependent mortality. This increased mortality may be attributed to predation, including cannibalism by earlier cohorts. Furthermore, growth‐selective mortality was evident soon after settlement, underscoring the vulnerability of slow growers to predation during the early juvenile stage. Although earlier and later cohorts were less abundant but showed promising recruitment potential, the prospective contribution of mid‐season cohorts to the adult population remained uncertain. The results clearly highlight the importance of density‐dependent mortality in population regulation in post‐settlement Japanese flounder.

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“…The unique chronological property of the daily increments and checks allows to precisely constrain the age of the fish at different early life history stages, i.e. the pelagic larval phase, the metamorphosis phase, the settlement event and the early juvenile phase, subsequently followed by yearly growth rings in the later juvenile and adult stages [ 23 – 25 ]. Otolith growth is linked to somatic growth [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Validating a biophysical dispersal model with the early life-history traits of common sole (Solea solea L.)

et al. 2021

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Larval dispersal and juvenile survival are crucial in determining variation in recruitment, stock size and adult distribution of commercially important fish. This study investigates the dispersal of early-life stages of common sole (Solea solea L.) in the southern North Sea, both empirically and through modeling. Age at different life-history events of juvenile flatfish sampled along the coasts of Belgium, the Netherlands and the United Kingdom in 2013, 2014 and 2016, was determined through the counting of daily growth rings in the otoliths. Juveniles captured between August and October were estimated to be on average 140 days old with an average pelagic larval duration of 34 days. The hatching period was estimated between early April and mid-May followed by arrival and settlement in the nurseries between May and mid-June. Growth rates were higher off the Belgian coast than in the other nursery areas, especially in 2013, possibly due to a post-settlement differentiation. Empirical pelagic larval duration and settlement distributions were compared with the Larvae&Co larval dispersal model, which combines local hydrodynamics in the North Sea with sole larval behavior. Yearly predicted and observed settlement matched partially, but the model estimated a longer pelagic phase. The observations fitted even better with the modelled average (1995–2015) distribution curves. Aberrant results for the small juvenile sole sampled along the UK coast in March 2016, led to the hypothesis of a winter disruption in the deposition of daily growth rings, potentially related to starvation and lower food availability. The similarities between measured and modelled distribution curves cross-validated both types of estimations and accredited daily ageing of juveniles as a useful method to calibrate biophysical models and to understand early-life history of fish, both important tools in support of efficient fisheries management strategies.

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Pre-settlement processes of northern rock sole (Lepidopsetta polyxystra) in relation to interannual variability in the Gulf of Alaska

Cited by 6 publications

References 51 publications

Elevated CO₂ does not exacerbate nutritional stress in larvae of a Pacific flatfish

Elevated CO₂ does not exacerbate nutritional stress in larvae of a Pacific flatfish

Post‐settlement dynamics of Japanese flounder Paralichthys olivaceus in Tango Bay: Seasonal patterns in growth, mortality, and recruitment potential

Validating a biophysical dispersal model with the early life-history traits of common sole (Solea solea L.)

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Pre-settlement processes of northern rock sole (Lepidopsetta polyxystra) in relation to interannual variability in the Gulf of Alaska

Cited by 6 publications

References 51 publications

Elevated CO2 does not exacerbate nutritional stress in larvae of a Pacific flatfish

Elevated CO2 does not exacerbate nutritional stress in larvae of a Pacific flatfish

Post‐settlement dynamics of Japanese flounder Paralichthys olivaceus in Tango Bay: Seasonal patterns in growth, mortality, and recruitment potential

Validating a biophysical dispersal model with the early life-history traits of common sole (Solea solea L.)

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Elevated CO₂ does not exacerbate nutritional stress in larvae of a Pacific flatfish

Elevated CO₂ does not exacerbate nutritional stress in larvae of a Pacific flatfish