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JD’Arcy

JD’Arcy

Ireland

Publications
  • Research Article
    Development of Labrus Bergylta (Ascanius 1767) Larvae from Hatching to Metamorphosis
    Author(s): OH Ottesen, E Dunaevskaya and JD’ArcyOH Ottesen, E Dunaevskaya and JD’Arcy

    Ballan wrasse, Labrus bergylta (Ascanius, 1767), has commercial interest as a cleaner fish in aquaculture, and culture of juveniles may be a good alternative to catching wild fish. However, basic knowledge of early development is limited. To study hatching and larvae ontogenesis, eggs were collected from a broodstock of wild caught ballan wrasse held in captivity. Larvae were fed rotifers for 27 days; Artemia was introduced at day 20 and fed larvae to day 49 after hatching. Age at hatching, and larval ontogenesis based on external morphological features were linked to the chronological age of larvae as days post hatching (DPH) and physiological age as degree day (°C.day) and standard length (SL). The ballan wrasse egg diameter was 1.05 ± 0.04 mm and 0.87 ± 0.05 mm with and without the gelatinous layer, respectively, and hatched at a SL of 3.64 ± 0.0.. View More»
    DOI: 10.4172/2155-9546.1000127

    Abstract PDF