Based on the data of releasing and enhancement of Tianjin Bohai Sea Fisheries Research Institute,this study has entirely summarized the experiences and achievements on releasing and enhancement works in Tianjin since ...Based on the data of releasing and enhancement of Tianjin Bohai Sea Fisheries Research Institute,this study has entirely summarized the experiences and achievements on releasing and enhancement works in Tianjin since 2006.Since 2006,Tianjin has launched the first multi-proliferation and release activity with"Fenneropenaeus chinensis"as the leader.So far,more than 22 varieties have been proliferated,among which crustaceans are dominant.There are significant ecological,economic and social benefits.Both national and international development trends of releasing and enhancement are summarized,and demands and objective of industrial development are proposed.展开更多
[ Objective] The paper was to prove the feasibility of using visible implant elastomer （VIE） tags to mark Chinese shrimp of about 1 em in length. [Method] In June 2014, 2 856 Chinese shrimps with an average length o...[ Objective] The paper was to prove the feasibility of using visible implant elastomer （VIE） tags to mark Chinese shrimp of about 1 em in length. [Method] In June 2014, 2 856 Chinese shrimps with an average length of 1.14 cm were tagged with red VIE. After temporary rearing for one day, 2 321 tagged shrimps were cultured in the same pond with 60 000 untagged shrimps in this experiment. In predation test, spottedtail gobies （Synechogobius ommaturus） were se- lected as the predator, and the predation rate of spottedtail gobies on small-sized Chinese shrimps was measured. [ Result] On September 21,2014, 206 kg of Chi- nese shrimp was harvested in the pond. There were 389 tagged shrimps, with an average body weight of 16.84 g, and an average length of 11.15 cm. The untagged shrimps had an average body weight of 17.08 g, and average length of 11.23 cm. The results indicated that there was no significant difference in growth between the tagged and untagged shrimps. The survival rate of the tagged shrimps was 2.7% lower than the untagged ones. Mthough the fluorescent tag dispersed and the posi- tion changed, the tag was still distinct both under ultraviolet light and to the naked eye. The predation test revealed that the fluorescent tag of shrimps did not in- crease the predation rate by spottedtail gobies. [ Conclusion] Red VIE tagging is feasible in Chinese shrimps. There was no significant difference in predation rate between untagged and VIE tagged shrimps.展开更多
文摘Based on the data of releasing and enhancement of Tianjin Bohai Sea Fisheries Research Institute,this study has entirely summarized the experiences and achievements on releasing and enhancement works in Tianjin since 2006.Since 2006,Tianjin has launched the first multi-proliferation and release activity with"Fenneropenaeus chinensis"as the leader.So far,more than 22 varieties have been proliferated,among which crustaceans are dominant.There are significant ecological,economic and social benefits.Both national and international development trends of releasing and enhancement are summarized,and demands and objective of industrial development are proposed.
基金Supported by the Scientific and Technological Research Program of Department of Education of Liaoning Province in 2016(L201623)Species Conservation Fund of Ministry of Agriculture of China(17162130135252096)
文摘[ Objective] The paper was to prove the feasibility of using visible implant elastomer （VIE） tags to mark Chinese shrimp of about 1 em in length. [Method] In June 2014, 2 856 Chinese shrimps with an average length of 1.14 cm were tagged with red VIE. After temporary rearing for one day, 2 321 tagged shrimps were cultured in the same pond with 60 000 untagged shrimps in this experiment. In predation test, spottedtail gobies （Synechogobius ommaturus） were se- lected as the predator, and the predation rate of spottedtail gobies on small-sized Chinese shrimps was measured. [ Result] On September 21,2014, 206 kg of Chi- nese shrimp was harvested in the pond. There were 389 tagged shrimps, with an average body weight of 16.84 g, and an average length of 11.15 cm. The untagged shrimps had an average body weight of 17.08 g, and average length of 11.23 cm. The results indicated that there was no significant difference in growth between the tagged and untagged shrimps. The survival rate of the tagged shrimps was 2.7% lower than the untagged ones. Mthough the fluorescent tag dispersed and the posi- tion changed, the tag was still distinct both under ultraviolet light and to the naked eye. The predation test revealed that the fluorescent tag of shrimps did not in- crease the predation rate by spottedtail gobies. [ Conclusion] Red VIE tagging is feasible in Chinese shrimps. There was no significant difference in predation rate between untagged and VIE tagged shrimps.
