Multiple-brooding rockfishes (Sebastes spp.) can utilize stored sperm from individual sires to fertilize consecutive broods.

Autor: Kashef NS; Fisheries Collaborative Program, Institute of Marine Sciences, University of California, Santa Cruz, Santa Cruz, California, USA.; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, California, USA., Stafford DM; Fisheries Collaborative Program, Institute of Marine Sciences, University of California, Santa Cruz, Santa Cruz, California, USA.; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, California, USA., Sogard SM; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, California, USA., Garza JC; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, California, USA.; Department of Ocean Sciences, University of California, Santa Cruz, Santa Cruz, California, USA., Field JC; Fisheries Collaborative Program, Institute of Marine Sciences, University of California, Santa Cruz, Santa Cruz, California, USA.; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, California, USA., Gilbert-Horvath EA; Fisheries Collaborative Program, Institute of Marine Sciences, University of California, Santa Cruz, Santa Cruz, California, USA.; Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Santa Cruz, California, USA.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2023 Apr; Vol. 102 (4), pp. 952-961. Date of Electronic Publication: 2023 Feb 22.
DOI: 10.1111/jfb.15341
Abstrakt: Viviparous rockfishes (Sebastes spp., family Scorpaenidae) mate and store sperm in the ovaries for several months prior to fertilization, as oocytes develop for the parturition season. Although multiple paternity has been documented in single-brooding rockfishes, paternity in consecutive broods of multiple-brooding species has not been studied. Analyses of multilocus microsatellite genotypes in both residual larvae left in the ovary from a previous parturition and upcoming fertilized broods in the same ovary demonstrated evidence of the same sires in consecutive broods in chilipepper (Sebastes goodei) and speckled (Sebastes ovalis) rockfishes. One S. goodei mother showed evidence of multiple paternity from the same two sires in both consecutive broods. The ability to retain sperm, even after a parturition event, for use in subsequent broods, confers an advantage to ensure fertilization and allows for extension of the parturition season. This life-history strategy provides a bet-hedging advantage in the California Current system, an environmentally dynamic ecosystem where larval survivorship and subsequent recruitment to adult populations can vary temporally by orders of magnitude.
(© 2023 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
Databáze: MEDLINE
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