通过迭代释放实验确定了常见的snook种群增强的最佳实践

IF 2.3 2区 农林科学 Q2 FISHERIES
Ryan W. Schloesser, Nathan P. Brennan, Paula Caldentey, Kenneth M. Leber
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引用次数: 0

摘要

最近,在美国佛罗里达州西南部进行的一项关于非齿鲷(Common Snook Centropomus decimalis)种群增加的研究中,优先考虑使用被动集成应答器(PIT)标签来监测放鱼。在放生地点周围部署的自主天线阵列允许对PIT标记的鱼进行连续采样,增加放生后的观察,以估计存活率并建立最佳实践。从2015年到2023年,一系列25个迭代放养实验产生了333个独特放养组(平均大小= 112-287 mm FL)的数据,涵盖了一系列放养时间、地点和协议。对45,958只幼鱼进行放养实验,约65% %进行PIT标记(100 %用于重复研究,10 %用于较大的一次性放生)。标记-再捕获模型通常表明,在释放后35天左右,存活率很高且恒定,为评估实验影响提供了一致的时间点。放养努力的多样性导致个体的存活率在0 %至50.9 %之间。逐步建模方法检查了每个独特的释放组的空间、时间和程序因素,以确定最佳实践的目标>; 20 %的存活率到第35天,这发生在68个释放组中。虽然低存活率的群体(<10 %)在任何时候都可能发生,但很多都与高处理或压力环境下的实验设计有关。我们确定了在佛罗里达州西南部放养斯努克的最佳做法,即在5月、6月或9月将大型幼鱼放养在河口、下游或潮汐小溪的中游,在被认为是高捕食风险或环境压力的地方放养时使用驯化笼,并在高存活率放养事件之后再等待一年放养。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Best practices for common snook stock enhancement identified through iterative release experiments
Research on stock enhancement of Common Snook Centropomus undecimalis in southwest Florida has recently prioritized using passive integrated transponder (PIT) tags to monitor released fish. Autonomous antenna arrays deployed around release sites allowed for continuous sampling of PIT tagged fish, increasing post-release observations to estimate survival and establish best practices. A series of 25 iterative stocking experiments from 2015 to 2023 have generated data on 333 unique release groups (mean sizes = 112–287 mm FL) spanning a suite of stocking times, locations, and protocols. Stocking experiments were conducted with 45,958 juveniles, with ∼65 % being PIT tagged (100 % tagged for replicated studies and 10 % for larger, one-time releases). Mark-recapture models regularly indicated that survival is high and constant around 35 days post-release, providing a consistent point in time to assess experimental impacts. The diversity of stocking efforts resulted in survival rates to day 35 ranging from 0 % to 50.9 % of individuals. A step-wise modeling approach examined the spatial, temporal, and procedural factors for each unique release group to identify best practices with the goal of > 20 % survival to day 35, which occurred for 68 release groups. Although low-surviving groups (<10 %) can occur at any time, many were anecdotally associated with experimental designs with high-handling or stressful environmental times. We determined best practices for stocking Snook in southwest Florida to be releasing large juveniles into the mouth, lower, or middle reaches of tidal creeks in May, June, or September, using acclimation cages when stocking into locations considered to be high predation risk or environmentally stressful, and waiting an additional year between releases following a high-survival stocking event.
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来源期刊
Fisheries Research
Fisheries Research 农林科学-渔业
CiteScore
4.50
自引率
16.70%
发文量
294
审稿时长
15 weeks
期刊介绍: This journal provides an international forum for the publication of papers in the areas of fisheries science, fishing technology, fisheries management and relevant socio-economics. The scope covers fisheries in salt, brackish and freshwater systems, and all aspects of associated ecology, environmental aspects of fisheries, and economics. Both theoretical and practical papers are acceptable, including laboratory and field experimental studies relevant to fisheries. Papers on the conservation of exploitable living resources are welcome. Review and Viewpoint articles are also published. As the specified areas inevitably impinge on and interrelate with each other, the approach of the journal is multidisciplinary, and authors are encouraged to emphasise the relevance of their own work to that of other disciplines. The journal is intended for fisheries scientists, biological oceanographers, gear technologists, economists, managers, administrators, policy makers and legislators.
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