Inbreeding depression and maternal effects on early performance of Pacific abalone

Yuewen Deng, Xiao Liu, Guofan Zhang, Ximing Guo

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Effects of inbreeding and maternity on early performance were studied in the Pacific abalone Haliotis discus hannai using two sets of 2 x 2 factorial crosses involving sister-brother mating. Parents from three full-sib families produced from two wild abalone populations (Japan and China) were used for the study. Metamorphic success and larval growth in four inbred (F = 0.25) and four outbred families were evaluated to 20 d postfertilization. In set I, inbreeding depression was 8.65% for metamorphic success, and -1.06, 3.25, and 4.98% for larval size at days 6, 10, and 20, respectively. In set II, inbreeding depression was 39.3% for metamorphic success, and 1.92, 4.99, and 3.37% for size at days 6, 10, and 20, respectively. Additionally, there were significant maternal effects on metamorphosis and larval size on day 6 (P < 0.01) in set I, which became insignificant at days 10 and 20. Maternal effects were absent in set II. The results of this study suggest that inbreeding at F = 0.25 significantly affects larval growth and greatly reduces metamorphic success in the Pacific abalone.

Original languageEnglish (US)
Pages (from-to)231-236
Number of pages6
JournalNorth American Journal of Aquaculture
Volume67
Issue number3
DOIs
StatePublished - Jul 2005

All Science Journal Classification (ASJC) codes

  • Aquatic Science

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