Freshwater snail Pomacea bridgesii (Gastropoda: Ampullariidae), life history traits and aquaculture potential
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2012, Vol 5, Issue 3
Abstract
Investigations on the reproductive biology, life cycle and feeding habits of Pomacea bridgesii have been undertaken to assess its potential as a cultured species for the ornamental trade. The species is dioecious and, under optimal culture conditions of temperature and food supply, it can breed all year round. The total developmental period at 23±1ºC varied from 15 to 24 days after oviposition. Hatching can last for up to 20 hours in the same egg cluster. Hatching success was very high (mean 94.56±0.62%) and no significant differences were observed in hatching rates between different clutch sizes. Development is direct and juveniles hatch at shell length (SL) = 2.4±0.25 mm. Maturity is reached 192±1.5 days after hatching and at SL = 32.80±2.03 mm. Two feeding experiments were undertaken to assess the impact of food type on juvenile survival during the first 8 days post-hatching and subsequent growth until 90 days post-hatching. Compatibility between other fish and plants fresh water aquarium species were performed. A combination of environmental tolerance, moderately amphibious behavior, fast growth, short development and hatching at an advanced stage, compatibility with other aquarium species (fishes or other invertebrates), and simple low cost diet, make P. bridgesii highly suitable for intensive culture for the ornamental trade.
Authors and Affiliations
Ana Coelho, Gonçalo Calado, Maria Dinis
Keywords
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