A preliminary study on the ecological culture mode of juvenile Tachypleus tridentatus
Tachypleus tridentatus is listed as the endangered(EN)on the IUCN Red List.Artificial breeding of horseshoe crabs and selection of suitable areas for multiplication and release are the effective way of restoring horseshoe crab resources.However,the survival rate of single species of juvenile hor-seshoe crabs is low.In order to explore new methods of improving the artificial breeding of juvenile horseshoe crabs,we carried out an ecological breeding experiment of juvenile T.tridentatus by using the Babylonia areolate breeding system.The results showed that the ecological breeding model of ju-venile T.tridentatus significantly improved the survival rate of juvenile horseshoe crabs and promoted the growth and development of the juvenile horseshoe crab population.After nine months of breeding,more than 90％of juvenile horseshoe crabs in ecological breeding ponds are three instars old and above while more than half of juvenile horseshoe crabs in monoculture ponds are still stagnant at one instar old.There was no significant difference in the survival rate and economic benefits of Babylonia areolate in monoculture ponds and ecological culture ponds.The experiments have shown that the ecological breeding model of juvenile T.tridentatus can effectively increase the growth rate and survival rate of juvenile horseshoe crabs without affecting the economic benefits of Babylonia areolate breeding.
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