平潭海域海参资源分布与资源密度估算初探

Preliminary study on resource distribution and resource density of sea cucumbers in Pingtan sea area of Fujian Province

为探究福建平潭近岸海域海参资源的分布状况,2023年4月、5月、6月在平潭近岸海域开展海参资源现场调查和社会调查,鉴定海参种类,分析生物学特征,评估海参资源密度、捕捞量和捕捞产值等。结果表明:水下现场调查共采集到活体海参242头,经鉴定均为仿刺参(Apostichopus japonicus);4月、5月和6月采集到的海参平均体长分别为(131.7±44.3)、(150.1±40.6)和(114.9±28.3)mm,平均体质量分别为(52.2±41.6)、(108.3±55.9)和(56.1±32.2)g,摄食等级分别为3~4、1~4和0~3级。4月、5月和6月6艘捕捞船的平均每艘船的海参捕获量分别为1050.0、683.3和233.3 kg。本文首次报道了福建平潭海城可能存在仿刺身自繁群体,研究结果可为福建省海参资源的开发利用奠定基础。

This study was performed to explore the distribution and resources of natural sea cucumbers in the inshore aquaculture area in Pingtan District(Fujian Province,China).The study conducted surveys to collect information on species,biology,resource amount,fishing amount,and fishing output value of sea cucumbers in the coastal aquaculture area of Pingtan in April,May,and June 2023.Moreover,the samples of sea cucumbers(n=242)were sampled and used for classification.The results showed that all samples were identified as Apostichopus japonicus.Biological measurement results showed that sea cucumbers collected in April,May,and June reveal average body lengths of(131.7±44.3),(150.1±40.6)and(114.9±28.3)mm,average body weights of(52.2±41.6),(108.3±55.9),(56.1±32.2)g,feeding levels of 3~4,1~4,and 0~3,respectively.Furthermore,the questionnaire survey results of six fishing boats showed that the average sea cucumber catch per boat in April,May,and June was 1050.0,683.3,and 233.3 kg,respectively.This is the first report on the possible existence of a self-propagating population of sea cucumber in Pingtan sea area,which provides information on the resources of sea cucumber in Fujian Province.