高温抑制白斑综合征病毒的机制与应用研究进展

Mechanisms and application progress of thermal suppression against white spot syndrome virus (WSSV)

  • 摘要: 系统梳理了升温干预相关研究,比较温度窗口、干预时点与维持时长等策略差异,结合水质背景与常用评价指标(病毒载量、死亡率/存活率、组织病理及免疫/应激指标),归纳、综述了高温抑制白斑综合征病毒(WSSV)的证据进展,厘清机制证据等级、关键参数与应用边界。目前多数研究在32~33℃观察到病毒复制受抑与宿主存活改善,受宿主规格与生理阶段、温度与时间组合、控温精度以及水质条件影响;现有证据更支持高温作为抑制WSSV复制和降低该病暴发风险的管理策略,仍需通过关键节点干预与过程测量进一步完善机制证据链。该策略在可控或半可控养殖系统中具有明确应用潜力,但其最佳温度–时间窗口、水质耦合边界与关键机制链条仍需通过标准化模型、关键节点干预与接近生产条件的实验验证进一步量化与完善。建议在标准化感染模型下建立多指标联合评价与可复制的流程验证,推动形成“监测触发-升温维持-复温复检”的操作框架,为养殖健康管理与生物安保提供参考。

     

    Abstract: White spot syndrome virus (WSSV) remains a major constraint to shrimp aquaculture, and water temperature can substantially affect infection outcomes. This review synthesizes experimental and application-oriented evidence on thermal intervention, with emphasis on mechanistic support levels, operational parameters, and practical boundaries across farming systems. We compared temperature setpoints, intervention timing and holding duration, heating patterns, water-quality context, and outcome metrics including viral load, survival/mortality, histopathology, and stress/immune indicators. Overall, a thermal window of 32-33 °C is most frequently associated with suppressed viral amplification and improved survival, yet the effects are strongly condition-dependent, being sensitive to host species and stage, temperature-time combinations, oxygen and nitrogenous wastes, and system controllability. Mechanistically, the most consistent causal support centers on host stress-associated factors (e.g., HSF1-HSP70-linked signaling) coupled with antiviral outcomes, whereas broader pathway-level claims require further validation under standardized heating protocols. Heating intervention should therefore be framed as a risk-management tool for replication suppression, viral-load reduction, and outbreak delay rather than assured pathogen eradication. Standardized infection models and multi-metric evaluation are recommended to define safe operable ranges and triggers and to support an operational workflow of monitoring-triggered heating, holding, recovery, and re-testing for practical biosecurity and health management.

     

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