Effect of temperature on the development and mortality of European hake (Merluccius merluccius L.) eggs from southern stock under laboratory conditions

Fletcher, Carlos Eduardo Guevara; Álvarez, Paula; Sánchez, Juana; Iglesias, J.

doi:10.1016/j.jembe.2015.11.018

Cited by 14 publications

(11 citation statements)

References 29 publications

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“…The spawning activity of the brown meagre is triggered when temperatures exceed 18 °C 34 , the approximate temperature at which the thermocline occurs in our study site. This suggests that the thermocline might represent the depth limit at which fish have to remain to attain a successful reproduction by increasing, for instance, egg quality 78 and/or the probability of egg survival 79 , 80 . In the light of the expected extension of summer conditions in the Mediterranean Sea 81 , it is possible that the reproductive behaviour of this species might be affected by the forecasted climate change.…”

Section: Discussionmentioning

confidence: 99%

Seasonal influence on the bathymetric distribution of an endangered fish within a marine protected area

Brazo

Marques

Zimmermann

et al. 2021

Sci Rep

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The spatio-temporal variability of fish distribution is important to better manage and protect the populations of endangered species. In this sense, the vertical movements of a vulnerable and protected species, Sciaena umbra, were assessed in a marine protected area (the Réserve Naturelle Marine de Cerbère-Banyuls, south of France) to study the variability of their bathymetric distribution at different time scales. Twenty adults were marked with acoustic transmitters and acoustically monitored over 2.5 years. This revealed that some individuals remained at shallow waters (< 8 m) all year round, while others presented vertical segregation at deeper waters during the cold months (mean depth of 22.5 ± 0.04 m) and all aggregated in shallow waters during the warm months. The brown meagre was more active during the night, except in June and July when peaks of activity were observed at dusk. These patterns are likely associated with foraging and reproductive behavior during the cold and warm periods, respectively, and likely regulated by water temperature and the depth of the thermocline. Here, we provide valuable information on when and where in the water column critical periods of S. umbra life cycle are expected to occur, which should be considered in management and protection plans.

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Section: Discussionmentioning

confidence: 99%

Seasonal influence on the bathymetric distribution of an endangered fish within a marine protected area

Brazo

Marques

Zimmermann

et al. 2021

Sci Rep

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“…Furthermore, summer SST in the area exceeded the optimal global temperature range recorded for this species in Aquamaps (see, Electronic supplements, Table S3 and S4) (Kaschner et al, 2013). High temperatures also seem to influence hake's reproduction (Guevara-Fletcher et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Main drivers of spatial change in the biomass of commercial species between summer and winter in the NW Mediterranean Sea

Lloret-Lloret

Pennino

Vilas

et al. 2021

Marine Environmental Research

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“…The early development stages of marine fish are usually sensitive to temperature variation (Guevara‐Fletcher et al., ). The adaptability of fish to temperature variation is species‐specific (Wen et al., ).…”

Section: Discussionmentioning

confidence: 99%

Use of response surface methodology to study the combined effects of temperature and salinity on hatching and deformity of the hybrid grouper,Epinephelus fuscoguttatus(♀) × Epinephelus polyphekadion(♂)

et al. 2018

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This study seeks to identify the optimal combination of temperature and salinity for the embryo development of the hybrid groupers, Epinephelus fuscoguttatus (♀) × Epinephelus polyphekadion (♂), using the central composite design and response surface methodology. Results have shown that the low hatching rates of fertilized eggs and high deformity rates of larvae were the result of lower or higher temperature/salinity levels. The linear effects of temperature and salinity were significant in both hatching rates and deformity rates (p < .01). Similar results were observed in the quadratic effects of temperature and salinity (p < .01). Effects of temperature were positively related to salinity effects (p < .05). Salinity effects were more remarkable than temperature on hatching rates, but not the same on deformity rates. Model equations were established for temperature and salinity effects on hatching rates and deformity rates. A high coefficient of determination (R2 > .97) was found for the adequacy and predictive capability of model equations, indicating that these models can be applied to prediction. The optimal combination of temperature and salinity was 27.58°C/30.94, which was derived from the statistical optimization approach. In this condition, the hatching rate was the highest at 85.73%, and the deformity rate was the lowest at 5.96%, with a high desirability function of 0.957. The results of this study can be applied to improve hatching and decrease deformity in future cultures of hybrid groupers.

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Effect of temperature on the development and mortality of European hake (Merluccius merluccius L.) eggs from southern stock under laboratory conditions

Cited by 14 publications

References 29 publications

Seasonal influence on the bathymetric distribution of an endangered fish within a marine protected area

Seasonal influence on the bathymetric distribution of an endangered fish within a marine protected area

Main drivers of spatial change in the biomass of commercial species between summer and winter in the NW Mediterranean Sea

Use of response surface methodology to study the combined effects of temperature and salinity on hatching and deformity of the hybrid grouper,Epinephelus fuscoguttatus(♀) × Epinephelus polyphekadion(♂)

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