Geographic variation in the maturity and growth schedules of English sole along the U.S. West Coast

D. B. Sampson, S. M. Al-Jufaily

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Logistic regression analyses showed that the maturity v. length relationship for female English sole Pleuronectes vetulus varied significantly among sampling locations from California to British Columbia in June-September. Stepwise analyses found that latitude, bottom gradient, bottom temperature and sediment type were all significant factors. Regression analyses of age at length from subsamples indicated that latitude, maturity and bottom sediment had significant effects on growth. Data from the aged subsamples showed significant differences among age classes in the length v. maturity relationship with older fish attaining maturity at smaller sizes than younger fish. On a coastwide basis the length and age at 50% maturity were c. 230 mm and 4.7 years respectively. Growth rate and length at 50% maturity have decreased substantially relative to observatons from the 1950s, but age at 50% maturity has increased.

Original languageEnglish
Pages (from-to)1-17
Number of pages17
JournalJournal of Fish Biology
Volume54
Issue number1
DOIs
Publication statusPublished - 1999

Keywords

  • Flatfish
  • Geographic variation
  • Growth
  • Maturity schedule

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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