Pelagios Kakunjá, La Paz, Baja California Sur, Mexico.
Orgcas, La Paz, Baja California Sur, Mexico.
PeerJ. 2024 May 16;12:e17192. doi: 10.7717/peerj.17192. eCollection 2024.
Studying how the bull sharks aggregate and how they can be driven by life history traits such as reproduction, prey availability, predator avoidance and social interaction in a National Park such as Cabo Pulmo, is key to understand and protect the species.
The occurrence variability of 32 bull sharks tracked with passive acoustic telemetry were investigated via a hierarchical logistic regression model, with inference conducted in a Bayesian framework, comparing sex, and their response to temperature and chlorophyll.
Based on the fitted model, occurrence probability varied by sex and length. Juvenile females had the highest values, whereas adult males the lowest. A strong seasonality or day of the year was recorded, where sharks were generally absent during September-November. However, some sharks did not show the common pattern, being detected just for a short period. This is one of the first studies where the Bayesian framework is used to study passive acoustic telemetry proving the potential to be used in further studies.
研究牛鲨如何聚集，以及它们如何通过生活史特征（如繁殖、猎物可用性、避免捕食者和社会互动）在卡波普尔莫这样的国家公园中被驱动，对于了解和保护该物种至关重要。
通过层次逻辑回归模型研究了 32 条使用被动声学遥测技术跟踪的牛鲨的出现变异性，在贝叶斯框架中进行推断，比较了性别以及它们对温度和叶绿素的反应。
根据拟合模型，出现概率因性别和长度而异。幼年雌性的数值最高，而成年雄性的数值最低。记录到很强的季节性或一年中的某一天，鲨鱼通常在 9 月至 11 月期间不存在。然而，有些鲨鱼并没有表现出常见的模式，只是在很短的时间内被检测到。这是首次使用贝叶斯框架研究被动声学遥测的研究之一，证明了在进一步研究中使用的潜力。
