Murdoch University的研究团队追踪监测了在孟加拉国红树林地区释放的五条成年咸水鳄，发现人工饲养的鳄鱼与野生鳄鱼在释放后的行为差异显著。1该研究已发表于《Wildlife Research》期刊2026年第53卷第4期。1
三条在人工饲养中生活了8至22年的雌性咸水鳄被释放后，均未尝试返回原饲养设施，而是在小的、界定明确的区域内定居下来，逐渐适应了野生环境。1与此形成对比的是，被转移132公里的野生鳄鱼Jongra表现出明显的归巢倾向，其活动方向指向原捕获地点，单日移动距离超过30公里。1
这一发现为濒危的孢加拉国咸水鳄种群保护提供了新思路。目前孟加拉国仅存咸水鳄约140条成年个体。1研究结果表明，使用人工饲养的亚成体和成体鳄鱼可能是强化野生种群的可行策略。1
A study published in Wildlife Research reveals a striking difference in behavior between captive-bred and wild saltwater crocodiles released in Bangladesh's mangrove forests.1 Researchers at Murdoch University tracked five adult saltwater crocodiles, including three females that had spent 8 to 22 years in captivity, following their release into the Sundarbans region.1 None of the captive-bred individuals attempted to return to their former facilities; instead, they settled into small, well-defined territories.1
The findings contrast sharply with the behavior of wild crocodiles.1 One relocated wild crocodile, named Jongra, which had been moved 132 kilometers from its original capture site, displayed clear homing behavior, with movement patterns oriented toward its former location and daily travel distances exceeding 30 kilometers.1 These results suggest that using captive-reared sub-adult and adult crocodiles may be a viable strategy for bolstering wild populations, particularly given that Bangladesh's remaining saltwater crocodile population consists of only approximately 140 adult individuals.1 The research was led by Ru Somaweera and published in volume 53, issue 4 of Wildlife Research in 2026.1
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