• Marine fauna of county Wexford, Ireland: The fauna of rocky shores and sandy beaches

      Healy, B.; McGrath, D. (Marine Institute, 1998)
      Information accumulated during 20 years of investigations on the coast of County Wexford is summarised. Topics include shore descriptions, faunal records, transectal surveys on rocky shores and sandy beaches, cryptofaunal studies on rocky shores, and ecology, reproduction and population dynamics of many of the dominant species. Studies were mainly carried out on exposed and sheltered rocky shores in the region of Camsore Point, Forlorn Point and Hook Head, and sandy beaches at Kilmore Quay, Camsore, Came, Rosslare Harbour and Rosslare Point, but some collections were made in a wide range of habitats throughout the county. A total of 484 taxa were recorded. Carnsore is the type locality for four species of oligochaete and two more are yet to be described. The fauna lacks some of the elements of west Irish coasts but is richer than on the mid-eastern coast owing to the presence of southern species. Differences in species abundance and population structure on south and east coasts are described, and possible reasons for the differences are discussed.
    • Population dynamics, age, growth and maturity of lemon sole Microstomus kitt (Walbaum 1792) sampled between 2000-2002 off the west coast of Ireland.

      King, P. A.; Hannan, J. F.; McGrath, D.; Veldon, M. (Marine Institute, 2006)
      The age, growth, maturity and population dynamics of lemon sale (Microstomus kin), from commercial catches off the west coast of Ireland (ICES division Vllb), was determined for the period November 2000 to February 2002. The maximum age recorded was 14 years. Males of the population were dominated by 4 year olds, while females were dominated by 5 year olds. Females dominated the sex ratio in the overall sample, by month sampled, by age class and by size (from 22cm in total length onwards. when N > 20). Mature male and female lemon sale were encountered at age 2 and above. Von Bertalanffy growth parameters were estimated using the method of Rafail (1973). In recent years, the lemon sale has exhibited a smaller asymptotic length (L∞ = 34.47cm), faster growth rate (K = 0.1955) and younger age at first maturity than in the same area in 1978-1979. These changes are indicative of a decrease in population size following exploitation.