Sharks play important functional roles in coral reef ecosystems. Studying reef shark populations’ spatial ecology also contributes important data for effective conservation planning. The purpose of this study was to define the home range of neonatal blacktip reef sharks (Carcharhinus melanopterus) around Moorea, French Polynesia, and compare estimates using both mark-recapture surveys and active acoustic telemetry. Mark-recapture surveys produced a minimum convex polygon (MCP) of 0.07 km2 that was significantly larger than the MCP derived from acoustic telemetry (0.02 km2). Acoustic telemetry produced 50 and 95% kernel utilization densities that were smaller (0.02 km2) and larger (0.14 km2) than home range estimates from mark-recapture surveys, respectively. Home range estimates from this study are the smallest that have been documented for neonatal blacktip reef sharks, possibly owing to the study sites’ proximity to deep channels. Mark-recapture and active acoustic telemetry are complementary approaches worthy of consideration where passive telemetry is impractical.

中文翻译：

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新生黑鳍礁鲨（Carcharhinus melanopterus）的栖息地，根据标记重捕和声学遥测估计

鲨鱼在珊瑚礁生态系统中发挥着重要的功能作用。研究礁鲨种群的空间生态学也为有效的保护规划提供了重要的数据。本研究的目的是确定法属波利尼西亚莫雷阿岛周围的新生黑鳍礁鲨 (Carcharhinus melanopterus) 的栖息范围，并使用标记重新捕获调查和主动声学遥测来比较估计值。标记重新捕获调查产生了 0.07 平方公里的最小凸多边形 (MCP)，它明显大于声学遥测 (0.02 平方公里) 的 MCP。声学遥测产生了 50% 和 95% 的内核利用密度，分别比标记重新捕获调查的家庭范围估计值小 (0.02 平方公里) 和大 (0.14 平方公里)。这项研究的家庭范围估计是有记录的新生黑鳍礁鲨的最小栖息地，这可能是由于研究地点靠近深水道。标记重新捕获和主动声学遥测是在被动遥测不切实际的情况下值得考虑的互补方法。