Journal of Aquaculture Research & Development

Joaquim Reis

Publications

• Research Article
  Effect of Diet and Stocking Densities on Life History Traits of Clea helena (Philippi 1847) Reared in Captivity
  Author(s): Ana Rita Coelho *,Maria Teresa Dinis ,Joaquim Reis Ana Rita Coelho *,Maria Teresa Dinis ,Joaquim Reis
  
  The freshwater gastropod Clea helena has recently been targeted by the freshwater ornamental industry due to its predation abilities on other snail species. This work describes for the first time some life history traits of this species, including reproduction, growth and development under laboratory conditions. Additionally, appropriate stocking densities were studied in order to assess the production viability of healthy snails in close-circuits systems. The species is dioecious and breeds under laboratory conditions but fertility rates presented were low. Hatching occur 52 ± 6 days after oviposition, at 25.0°C. Development is direct and juveniles hatch at shell length SL=3.1 ± 0.3mm (n=20) and resemble the adults in shell shape and color. Growth rates during a maximum period of 60 days were compared between snails fed on three dif.. View More»
  DOI: 10.4172/2155-9546.1000187

  Abstract PDF