Corley J C, Capurro A F, Bernstein C
Laboratorio de Ecología de Insectos, INTA EEA Bariloche, CC 277, (8400) SC de Bariloche Río Negro Bariloche, Argentina.
Theor Popul Biol. 2004 Mar;65(2):193-203. doi: 10.1016/j.tpb.2003.09.005.
We investigated the effect on host-parasitoid dynamics of prolonged diapause, a feature of the life history of many animals living in unpredictable environments, by modifying the classical May (J. Anim. Ecol. 47 (1978) 833) host-parasitoid model. We considered three patterns of development of host and parasitoid: (a) prolonged parasitoid diapause controlled by host physiology, (b) parasitoid interference in host development, preventing parasitized hosts from prolonging diapause, and (c) host diapause independent of parasitoid attack. We found that single-year prolonged diapause shifted the boundaries of the May model towards a slight increase in stability. Longer periods of diapause prolongation had a stronger influence, but this influence remained modest if we considered realistic parameter values. In contrast to other recent studies, our results suggest that prolonged diapause does not necessarily compensate for the destabilizing effects of time lags on the influence of parasitoids on population dynamics.
我们通过修改经典的梅（《动物生态学杂志》47卷（1978年）833页）宿主 - 寄生蜂模型，研究了长期滞育（许多生活在不可预测环境中的动物生活史的一个特征）对宿主 - 寄生蜂动态的影响。我们考虑了宿主和寄生蜂的三种发育模式：（a）由宿主生理控制的寄生蜂长期滞育，（b）寄生蜂对宿主发育的干扰，阻止被寄生的宿主延长滞育，以及（c）宿主滞育独立于寄生蜂攻击。我们发现，单年度的长期滞育使梅模型的边界向稳定性略有增加的方向移动。更长时间的滞育延长具有更强的影响，但如果我们考虑现实的参数值，这种影响仍然较小。与其他近期研究不同，我们的结果表明，长期滞育不一定能补偿时间滞后对寄生蜂对种群动态影响的不稳定作用。
