Muskellunge Esox masquinongy fisheries in Ohio are maintained through annual stocking of advanced fingerlings (25–30 cm) at nine reservoirs. Voluntary angler catch reporting is the principal method for monitoring (stocking and angling success) these fisheries. During 1960–2007, anglers reported catching over 47,000 Muskellunge by mailing catch cards to the Ohio Department of Natural Resources, Division of Wildlife. In 2008, a new online catch reporting system, the Muskie Angler Log (MAL), was launched. Designed in collaboration with anglers, the MAL provides important fishery data to biologists while also serving as a fishing resource for anglers. Anglers who use the MAL can view, summarize, and download their personal catches, review reservoir-specific stocking records and catch histories, and examine recent catch details that are voluntarily shared by other anglers. Catch data from the MAL is vital to the Ohio Department of Natural Resources, Division of Wildlife for characterizing fisheries, tracking fishery performance (numbers and sizes), leveraging Muskellunge management decisions, and supporting Muskellunge-specific research. Total reported catches in the MAL have increased over time, with most (six of nine) reservoirs showing increased or stable trends in reported catches. Despite increasing catch reports, annual angler participation in the MAL has declined, which could reduce the effectiveness of the system in monitoring these fisheries. It is not known whether this trend represents an actual decline in participation or is a function of the periodicity in catches among anglers. We modeled the change in the population size (λ) of anglers participating in the MAL using a mark–recapture method (Pradel model). Overall, the modeling indicated that the population of anglers using the MAL has declined since 2008, with the number of anglers belonging to a Muskellunge fishing club declining slower than that for nonclub members. Intervention methods promoting and incentivizing the use of the MAL will be required to assure that the MAL provides the necessary data for managing Muskellunge.

中文翻译：

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用于管理俄亥俄州 Muskellunge 渔业的在线自愿垂钓者渔获量报告计划：渔获数据和垂钓者参与的趋势

Muskellunge Esox masquinongy俄亥俄州的渔业通过每年在 9 个水库放养高级鱼种（25-30 厘米）来维持。自愿垂钓者渔获量报告是监测（放养和垂钓成功）这些渔业的主要方法。在 1960 年至 2007 年期间，垂钓者报告称，通过向俄亥俄州自然资源部野生动物部邮寄捕捞卡，捕获了 47,000 多只麝香鱼。2008 年，推出了新的在线渔获量报告系统 Muskie Angler Log (MAL)。MAL 与垂钓者合作设计，为生物学家提供重要的渔业数据，同时也为垂钓者提供捕鱼资源。使用 MAL 的垂钓者可以查看、汇总和下载他们的个人捕捞量，查看特定水库的放养记录和捕捞历史，并检查其他垂钓者自愿共享的近期捕捞详细信息。来自 MAL 的捕获数据对于俄亥俄州自然资源部野生动物司的渔业特征、跟踪渔业绩效（数量和规模）、利用 Muskellunge 管理决策和支持 Muskellunge 特定研究至关重要。MAL 报告的总捕获量随着时间的推移而增加，大多数（九个中的六个）水库报告的捕获量显示出增加或稳定的趋势。尽管渔获量报告增加，但每年垂钓者参与 MAL 的人数有所下降，这可能会降低系统监测这些渔业的有效性。目前尚不清楚这种趋势是否代表参与度的实际下降，或者是垂钓者捕获量周期性的函数。我们使用标记重新捕获方法（Pradel 模型）模拟了参与 MAL 的垂钓者的种群规模 (λ) 的变化。总体而言，模型表明使用 MAL 的垂钓者人数自 2008 年以来有所下降，属于 Muskellunge 钓鱼俱乐部的垂钓者人数下降速度低于非俱乐部会员。将需要促进和激励使用 MAL 的干预方法，以确保 MAL 提供必要的数据来管理 Muskellunge。