Toward responsible stock enhancement: broadcast spawning dynamics and adaptive genetic management in white seabass aquaculture

Toward responsible stock enhancement: broadcast spawning dynamics and adaptive genetic management in white seabass aquaculture

The evolutionary effects captive-bred individuals that can have on wild conspecifics are necessary considerations for stock enhancement programs, but breeding protocols are often developed without the knowledge of realized reproductive behavior. To help fill that gap, parentage was assigned to offspring produced by a freely mating group of 50 white seabass (Atractoscion nobilis), a representati...

Gamete Release and Spawning Behavior in Broadcast Spawning Marine Invertebrates

The release of eggs and sperm into the environment for external fertilization is common (Giese & Kanatani 1987) and thought to be the ancestral mating strategy (Wray 1995). Most phyla have at least some species that release sperm into the environment (free spawning or spermcasting) and a majority have representatives that also release eggs (broadcast spawning) for external fertilization (Levita...

Tunneling dynamics and spawning with adaptive semi-classical wave-packets Tunneling dynamics and spawning with adaptive semi-classical wave-packets

Tunneling dynamics and spawning with adaptive semi-classical wave-packets V. Gradinaru, G.A. Hagedorn, and A. Joye Seminar for Applied Mathematics, ETH Zürich, CH-8092 Zürich, Switzerland. Department of Mathematics and Center for Statistical Mechanics, Mathematical Physics, and Theoretical Chemistry, Virginia Tech, Blacksburg, Virginia 24061-0123, USA. Institut Fourier, Université de Grenoble 1...

Spawning frequency of brood dams and sires in a marine fish stock-enhancement hatchery.

Parentage analysis, employing five hypervariable microsatellite markers, was used to follow spawning patterns of red drum Sciaenops ocellatus broodfish in two spawning tanks through most of a calendar year in a marine fish hatchery dedicated to stock enhancement. Five of six dams and all four sires spawned at least once during the year. Variation in dam and sire spawning incidence and in number...

Tunneling dynamics and spawning with adaptive semi-classical wave-packets