Exploitation of the volute snail Zidona dufresnei (Donovan, 1823) in Argentine waters, South western Atlantic ocean.

JULIANA GIMÉNEZ , MARIO LASTA, GREGORIO BIGATTI & PABLO E. PENCHASZADEH

Journal of Shellfish Research

Año: 2005 vol. 24

ABSTRACT Zidona dufresnei (fine snail) is a common gastropod species in the Southwestern Atlantic Ocean, which ha9 been exported to Asian countries for human cons~tmptions ince 1988. Landings of 2. dujresnei increased from 1974 to a maximum record of 1,300 mt (whole shelled animal) in 1997. followed by a steady decline through 2002. No resource management effort have been applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from of 1,300 mt (whole shelled animal) in 1997. followed by a steady decline through 2002. No resource management effort have been applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from exported to Asian countries for human cons~tmptions ince 1988. Landings of 2. dujresnei increased from 1974 to a maximum record of 1,300 mt (whole shelled animal) in 1997. followed by a steady decline through 2002. No resource management effort have been applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from of 1,300 mt (whole shelled animal) in 1997. followed by a steady decline through 2002. No resource management effort have been applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from Zidonu dufresnei (fine snail) is a common gastropod species in the Southwestern Atlantic Ocean, which ha9 been exported to Asian countries for human cons~tmptions ince 1988. Landings of 2. dujresnei increased from 1974 to a maximum record of 1,300 mt (whole shelled animal) in 1997. followed by a steady decline through 2002. No resource management effort have been applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from to manage this resource. We suggest that Z dufresnei is in a phase of over-exploitation since 1988 until present, we propose a rational management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from management as size selectivity, with a minimum capture size of 16 cm, closure of the fishery during the reproductive season, from applied to this specics since the beginning of its catch history, about 30 y ago. Information provided in this work. together with previous studies on the reproductive biology and population dynamics of Z dtrfresnei, will contribute to establish effectwe precautionary polices to manage this resource. W