There is a dearth of knowledge of the ecology and population status of horseshoe crabs in Indonesia. To avoid the high costs of sampling and monitoring horseshoe crabs, a questionnaire-based survey was designed and administered to local people to collect local knowledge on the population status, distribution, and potential threats that horseshoe crabs face at 35 sites in Indonesia. The results from 237 interviewees showed that horseshoe crabs were observed in 62 districts, including 114 local areas in Java, Sumatra, Kalimantan, and Sulawesi Island. Approximately 70.5% of interviewees suggested that populations of horseshoe crabs in these districts are declining. The two most cited reasons for the decline included the habit of discarding horseshoe crab bycatch in locations where horseshoe crabs are unable to survive, such as river banks and trash piles (27.7%) and beach litter (19.8%). gillnetting (48.3%) and bottom trawling (42.4%) were the main types of fishing gear responsible for the capture of horseshoe crabs. Due to the common practice of consuming adult crabs in these areas (90.0%), mass harvesting of adult horseshoe crabs was also mentioned by respondents (29.3%). Local knowledge obtained in this study has provided critical information on the distribution, threats, and causes of the decline in horseshoe crab populations. The results of this study therefore suggest that there is an urgent need for a sound management strategy to effectively aid in the conservation of horseshoe crabs.

印度尼西亚对horse的生态和种群状况缺乏了解。为了避免对and进行抽样和监测的高昂成本，设计了基于问卷的调查并向当地居民进行了调查，以收集有关印尼35个地点的crab的种群状况，分布和潜在威胁的本地知识。237名受访者的结果表明，在62个地区观察到了horse，其中包括爪哇，苏门答腊，加里曼丹和苏拉威西岛的114个地区。大约70.5％的受访者表示，这些地区的horse蟹数量正在减少。导致数量下降的两个最常被提及的原因包括习惯，即在无法生存的地方丢弃by的兼捕物，例如河岸和垃圾堆（27.7％）和沙滩垃圾（19.8％）。刺网（48.3％）和底拖网（42.4％）是负责捕获horse的主要渔具类型。由于在这些地区食用成年螃蟹的普遍做法（90.0％），受访者还提到成年horse的大规模收获（29.3％）。在这项研究中获得的当地知识已经提供了有关horse的分布，威胁和减少原因的重要信息。因此，这项研究的结果表明，迫切需要一种有效的管理策略，以有效地保护crab。由于在这些地区食用成年螃蟹的普遍做法（90.0％），受访者还提到成年horse的大规模收获（29.3％）。在这项研究中获得的当地知识已经提供了有关horse的分布，威胁和减少原因的重要信息。因此，这项研究的结果表明，迫切需要一种有效的管理策略，以有效地保护crab。由于在这些地区食用成年螃蟹的普遍做法（90.0％），受访者还提到成年horse的大规模收获（29.3％）。在这项研究中获得的当地知识已提供了有关horse的分布，威胁和减少原因的重要信息。因此，这项研究的结果表明，迫切需要一种有效的管理策略，以有效地保护crab。