Image analysis approach to estimate fecundity of live-bearer rockfishes (Sebastes spp.) along the California Coast

Mapes, Hayley; Beyer, Sabrina G.; Choi, Jessica; Saas, Emma; Alonzo, Suzanne H.; Field, John C.

doi:10.1007/s10641-023-01448-4

Environ Biol Fish

2023

DOI: 10.1007/s10641-023-01448-4

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Image analysis approach to estimate fecundity of live-bearer rockfishes (Sebastes spp.) along the California Coast

Hayley Mapes,

Sabrina G. Beyer,

Jessica Choi

et al.

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2024

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Shifting ocean conditions influence temporal variation in the fecundity of California Current rockfishes (Sebastes spp.)

Beyer,

Sogard,

Stafford

et al. 2024

Can. J. Fish. Aquat. Sci.

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Successful reproduction is critical to the growth and persistence of marine fish populations, yet how changes in the environment influence reproduction remains largely unknown. We explored how shifting ocean conditions influenced larval production in four species of long-lived, live-bearing rockfish ( Sebastes spp.) in the California Current. Brood fecundity, body size, and environmental information were analyzed from the mid-1980s through 2020. Interannual variation in brood fecundity was greater than 50% in the single-brooding yellowtail rockfish ( S. flavidus) and widow rockfish ( S. entomelas). Brood fecundity varied less in chilipepper ( S. goodei) and bocaccio ( S. paucispinis), two species capable of multiple broods per year. In these two species, interannual fecundity variability is more likely to depend on the number of broods produced than on brood size alone. In all four species, brood fecundity was positively correlated with maternal length and body condition. Variable ocean conditions influenced the strength of maternal size effects by year. These results provide evidence for reproductive plasticity and environmental effects on fecundity, with implications for changes in population reproductive potential with climate change.

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Shifting ocean conditions influence temporal variation in the fecundity of California Current rockfishes (Sebastes spp.)

Beyer,

Sogard,

Stafford

et al. 2024

Can. J. Fish. Aquat. Sci.

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show abstract

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Image analysis approach to estimate fecundity of live-bearer rockfishes (Sebastes spp.) along the California Coast

Cited by 1 publication

References 40 publications

Shifting ocean conditions influence temporal variation in the fecundity of California Current rockfishes (Sebastes spp.)

Shifting ocean conditions influence temporal variation in the fecundity of California Current rockfishes (Sebastes spp.)

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