Reproductive Variance of Brood Dams and Sires used in Restoration Enhancement of Spotted Seatrout in Texas Bays and Estuaries
| Autor: | Robert R. Vega, M. A. Renshaw, John R. Gold, D. Abrego, Jonathan B. Puritz |
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| Rok vydání: | 2014 |
| Předmět: |
geography
geography.geographical_feature_category Reproductive success urogenital system Ecology fungi Sire Cynoscion nebulosus food and beverages Estuary Aquatic Science Biology biology.organism_classification Spawn (biology) Brood Animal science Effective population size behavior and behavior mechanisms reproductive and urinary physiology |
| Zdroj: | North American Journal of Aquaculture. 76:407-414 |
| ISSN: | 1548-8454 1522-2055 |
| DOI: | 10.1080/15222055.2014.920751 |
| Popis: | Spawning patterns and reproductive variance of Spotted Seatrout Cynoscion nebulosus dams and sires at two restoration enhancement facilities in Texas were assessed across a spawning year by using parentage analysis based on 12 variable microsatellite loci. In total, 72.6% of all dams and sires contributed to at least one spawning event, although in contrasting patterns. Across all spawning events assayed, more sires contributed to each spawn, on average, than did dams; dams had considerably higher variance in reproductive success than sires. Dams alternatively had a higher average contribution to the number of progeny from a single spawn but also a much higher variance in the number of progeny produced per spawn. The variation in the number of progeny produced per dam and per sire and the number of actual mating combinations led to an average reduction of 64.3% in the genetic effective population size (Ne) per spawn relative to the maximum Ne that would be expected if (1) all possible dam × sire m... |
| Databáze: | OpenAIRE |
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