Legorel Richard S, Hardin Mark P, Ter-Ghazaryan Diana
LeGore Environmental Associates, Inc., 2804 Gulf Drive N., Holmes Beach, FL 34217 USA.
Rev Biol Trop. 2005 May;53 Suppl 1:145-53.
This fishery was examined utilizing public records, stakeholder interviews, and operational site visits to describe the fishery for the Puerto Rico Coral Reef Advisory Committee as a first step toward development of policies for the effective management of these natural resources. The fishery is not large, including fewer than 20 licensed fishers operating primarily on the west end of the island. Only three operators export product, with the remaining fishers providing specimens to the exporters based upon customer orders. Most collection of coral reef species occurs over hard rubble zones mixed with relic reef structures and rock, or on the sides and frontal areas of active reefs. Other species are collected from among mangrove prop root zones, tidal flats, and seagrass beds. Collections are made using simple barrier and dip nets for fish and motile invertebrates such as shrimp. Invertebrates such as crabs, starfish, and sea cucumbers are commonly collected by overturning small rocks, gathering the specimens, and then replacing the rocks in their original positions. Specimens are carried to the boat and transferred to individual cup holders to maximize survival. Although statements concerning former use of chemicals to assist capture were noted, no evidence of current chemical use was observed. Specimens are held in re-circulating seawater systems onshore until collections are aggregated and shipped. The fishery strives to operate with mortality of<1%, as mortalities of>3% are described as unacceptable to customers. More than 100 fish species are collected in this fishery, but the top ten species account for >70% of the total numbers and >60% of the total value of the fishery, with a single species, Gramma loreto (Royal Gramma), comprising >40% of the numbers. More than 100 species of invertebrates are collected, but this fishery is also dominated by a handful of species, including anemones, hermit crabs, turbo snails, serpent starfish, and feather duster polychaetes.
为了向波多黎各珊瑚礁咨询委员会描述该渔业情况,以此作为制定有效管理这些自然资源政策的第一步,我们利用公共记录、利益相关者访谈和实地考察对该渔业进行了调查。该渔业规模不大,主要在该岛西端作业的持证渔民不到20人。只有三家经营者出口产品,其余渔民根据客户订单向出口商提供标本。大多数珊瑚礁物种的采集发生在与残余珊瑚礁结构和岩石混合的硬碎石区,或活跃珊瑚礁的侧面和正面区域。其他物种则从红树林支柱根区、潮滩和海草床中采集。采集鱼类和活动无脊椎动物(如虾)时使用简单的屏障网和抄网。螃蟹、海星和海参等无脊椎动物通常是通过翻转小石块、收集标本,然后将石块放回原位来采集的。标本被带到船上,转移到各个杯形容器中以最大限度提高存活率。虽然有关于以前使用化学物质辅助捕获的说法,但未观察到当前使用化学物质的证据。标本在岸上的循环海水系统中保存,直到收集汇总并装运。该渔业努力将死亡率控制在1%以下,因为超过3%的死亡率被客户认为是不可接受的。这个渔业采集了100多种鱼类,但前十大物种占总数的70%以上,占渔业总价值的60%以上,其中单一种类的洛氏眶锯雀鲷(皇带鱼)占总数的40%以上。采集了100多种无脊椎动物,但这个渔业也由少数几种物种主导,包括海葵、寄居蟹、陀螺螺、蛇海星和羽鳃类多毛纲动物。