GROWTH OF SNAILS AT Thais (Stramonita) haemastoma AND Cymatium parthenopeum partenopeum AT EXRIMENTAL CULTIVATION IN ITAPOCOROY BAY (26O 47´S - 48O 36´W)(PENHA -SC)

• Published in: Brazilian Journal of Aquatic Science and Technology
• Main Authors: MANZONI, G. C., LACAVA, L. A.
• Format: Article in Journal/Newspaper
• Language: Portuguese
• Published: UNIVALI 2010
• Subjects: Crassostrea gigas
• Online Access: https://periodicos.univali.br/index.php/bjast/article/view/2445; https://doi.org/10.14210/bjast.v2n1.p167-173

Santa Catarina State, is brasilian’s first producer of cultured marine mollusks, with an estimated annual production in 1998 over 7,500 tones. The main cultured species are the mussel Perna perna, and the japanese oyster Crassostea gigas. In the fauna associated with these cultures, the snails Thais (Stramonita) haemastoma and Cymatium parthenopeum parthenopeum, were identified as the main predators. The former species has been used as food by coastal fishing communities and its commercial value is potentially high. In Santa Catarina, T. (S). haematoma meat has been princommercialized at around 7.00 US$ a kilogram, and 2.00 US$ when the snail is sold with the shell. The acceptance of this snails as a seafood product and its high value indicate that their commercial exploitation could be profitable. This perspective, however, requires a previous understanding of their basic biological parameters, such as growth and survival in experimental culture environment. The results obtained in experiments conducted during six months in Itapocoroy Bay (26o 47´S - 48O 37´W, Penha , Santa Catarina), have shown, on average, a 3.0 cm shell increase and a 30.0 g increase in weight. A similar growth rate was shown by C. p. parthenopeum, not commonly commercialized in Santa Catarina. O cultivo de moluscos marinhos em Santa Catarina, encontra-se em expansão, com uma produção projetada para 1998 superior a 7500 toneladas, consolidando para o Estado a posição de primeiro produtor nacional de moluscos marinhos. As principais espécies cultivadas são o mexilhão Perna perna e a ostra japonesa Crassostrea gigas. Entre a fauna associada aos cultivos verifica-se a presença dos gastrópodes Thais (Stramonita) haemastoma e Cymatium parthenopeum parthenopeum como principais predadores. Observa-se, também que as comunidades litorâneas apresentam o hábito de consumir estes gastrópodes como fonte de alimento, principalmente a espécie Thais (S). haemastoma. Além disso, existe uma tendência dos produtores de moluscos, como em outros países, de ...