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首页> 外文期刊>ICES Journal of Marine Science >A full life cycle and spatially explicit individual-based model for the giant mud crab (Scylla serrata): a case study from a marine protected area
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A full life cycle and spatially explicit individual-based model for the giant mud crab (Scylla serrata): a case study from a marine protected area

机译：巨型泥蟹（Scylla serrata）的完整生命周期和空间明确的基于个体的模型：来自海洋保护区的案例研究

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The giant mud crab (Scylla serrata) is an important fisheries species throughout southeast Asia and the South Pacific. In Australia, marine protected areas (MPAs) and fish habitats have been declared specifically to protect the local populations of S. serrata. The cannibalistic behaviour of S. serrata coupled with the potential attraction of increased predators may counteract the effect of excluding fishing from these areas as a means of increasing the local crab population. The population dynamics of S. serrata could also be confounded by the spatio-temporal variability in environmental conditions (e.g. run-off and temperature). Here, we used a spatially explicit individual-based model (IBM) to explore the population dynamics of S. serrata in an MPA located in southern Moreton Bay, Queensland, Australia. This IBM simulated the life cycle dynamics of individual S. serrata and integrated the key processes affecting its population dynamics. These processes include physical transport of the planktonic life stages, movement, growth, metamorphosis, setting, reproduction, spawning, harvesting, and predation. Individual variability was built into the model to account for demographic variation. The modelled scenarios indicated that the effect of the different harvest strategies trialled on the population dynamics after 30 months and the MPA influenced the number of individuals in the creek system resulting in a partial 35% population increase. Further development and application of this model has implications for MPAs and catch limits under multiple stressors including climate change.
机译：巨型泥蟹（Scylla serrata）是整个东南亚和南太平洋的重要渔业物种。在澳大利亚，已经宣布了海洋保护区（MPA）和鱼类栖息地，专门用于保护锯齿沙门氏菌的当地居民。锯齿鲈的食人行为加上捕食者增加的潜在吸引力可能抵消了将捕鱼排除在这些区域之外的影响，以此作为增加当地螃蟹种群的手段。锯齿沙雷氏菌的种群动态还可能会因环境条件（例如径流和温度）的时空变化而混淆。在这里，我们使用空间显式的基于个体的模型（IBM）探索位于澳大利亚昆士兰州莫顿湾南部的MPA中锯齿沙门氏菌的种群动态。该IBM模拟了单个锯齿沙雷氏菌的生命周期动态，并整合了影响其种群动态的关键过程。这些过程包括浮游生物生命阶段的物理运输，运动，生长，变态，定植，繁殖，产卵，收获和捕食。该模型内置了个体差异性，以解决人口统计差异。建模的情景表明，不同的收获策略对30个月后的种群动态具有影响，MPA影响了小河系统中的个体数量，导致种群部分增加了35％。该模型的进一步开发和应用对海洋保护区和在包括气候变化在内的多种压力下的捕捞极限都有影响。

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