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首页> 外文期刊>ICES Journal of Marine Science >Effects of population density and body size on disease ecology of the European lobster in a temperate marine conservation zone
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Effects of population density and body size on disease ecology of the European lobster in a temperate marine conservation zone

机译：温带海洋保护区种群密度和体型对欧洲龙虾疾病生态的影响

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Marine conservation zones (MCZs) are a form of spatial marine management, increasingly popular since the move towards ecosystem-based fisheries management. Implementation, however, is somewhat contentious and as a result of their short history, their effects are still widely unknown and understudied. Here, we investigate the population and health of the European lobster (Homarus gammarus) in the Lundy Island Marine Conservation Zone, Bristol Channel, UK. Using the fished refuge zone (RZ) as a control area, catch per unit effort was calculated for both the no-take zone (NTZ) and RZ and binomial logistic regression models were used to examine the effects of site, sex, landing size, and loss of chelae on the probability of shell disease and injury presence in individuals. Lobsters were also tested for the causative agent of gaffkaemia, Aerococcus viridans var. homari, and white spot syndrome virus (WSSV). The analysis revealed a higher lobster density and larger lobsters in the NTZ compared with the RZ. Shell disease was present in 24% of lobsters and the probability of shell disease occurrence increased notably for individuals over the minimum landing size (MLS) of 90 mm carapace length. Shell disease was also more prevalent in lobsters displaying injury, and in males. Injury was present in 33% of lobsters sampled and prevalence was higher in lobsters in the NTZ compared with the RZ, and in lobsters. MLS. Aerococcus viridans var. homari was detected in,1% of individuals, but WSSV was absent from all sampled lobsters. Overall, the study demonstrates both positive and potentially negative effects of NTZs, methods for effective non-lethal sampling of disease agents, and highlights the need for more comprehensive, long-term monitoring within highly protected MCZs, both before and after implementation.
机译：海洋保护区（MCZs）是空间海洋管理的一种形式，自从转向基于生态系统的渔业管理以来，它日益流行。然而，实施尚有争议，由于其历史短，其影响仍然广为人知，而且研究不足。在这里，我们调查了英国布里斯托尔海峡的伦迪岛海洋保护区中欧洲龙虾（Homarus gammarus）的种群和健康状况。使用捕捞避难区（RZ）作为控制区域，计算了非捕捞区（NTZ）和RZ的单位工作量捕获量，并使用二项式Logistic回归模型检查了场地，性别，着陆面积，以及因个体外壳疾病和受伤的可能性而导致的白斑病的丧失。还对龙虾进行了高磷血症的致病因子，即绿球菌（Aerococcus viridans var）的测试。 homari和白斑综合症病毒（WSSV）。分析显示，与RZ相比，NTZ中的龙虾密度更高，龙虾更大。在24％的龙虾中存在贝壳病，对于超过90毫米甲壳长度的最小着陆尺寸（MLS），个体发生贝壳病的可能性显着增加。贝壳病在显示受伤的龙虾和雄性中也更为普遍。采样的龙虾中有33％存在伤害，与RZ和NTZ相比，NTZ中的龙虾患病率更高。 MLS。绿气单球菌在1％的个体中检测到homari，但是所有采样龙虾中均未发现WSSV。总体而言，该研究证明了NTZ的积极作用和潜在的负面影响，这是有效的非致死性疾病病原体采样方法，并强调了在实施之前和之后，在受到高度保护的MCZ中需要进行更全面，长期的监控。

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