Dipartimento di Medicina Veterinaria, Università degli Studi di Bari, 70010, Valenzano, Bari, Italy.
Parasitol Res. 2013 Apr;112(4):1795-7. doi: 10.1007/s00436-012-3229-7. Epub 2012 Dec 20.
Several biological aspects of Rhipicephalus sanguineus have been studied, but scant information is available on the effect of egg clustering on incubation period and larval survival. Herein, R. sanguineus eggs were separated in groups composed by 1 (GI), 10 (GII), 50 (GIII), 100 (GIV), 500 (GV) and 1,000 (GVI) eggs (10 replicates), and incubation and larval survival period were recorded. No correlation was observed between the amount of egg batches and hatching percentage. Larvae from GI hatched in a longer time (mean 17 days), than those of other groups (mean 14.9 days). This difference was significant in eggs from group GI vs. GV and GI vs. GVI (P<0.05). Conversely, GI displayed a shorter survival period (mean 28.7 days) compared with other groups (P<0.01). The maximum survival time was recorded in GV (mean 49.8 days). Data suggest that R. sanguineus egg clustering affects incubation period and larval survival.
已对拉氏锐缘蜱的几个生物学方面进行了研究，但关于卵聚集对孵化期和幼虫存活率的影响的信息很少。在此，将拉氏锐缘蜱的卵分为 1（GI）、10（GII）、50（GIII）、100（GIV）、500（GV）和 1000 个卵（GVI）（10 个重复）的组，并记录孵化和幼虫存活时间。卵批量与孵化百分比之间没有相关性。GI 组的幼虫孵化时间较长（平均 17 天），而其他组的幼虫孵化时间较短（平均 14.9 天）。GI 组与 GV 和 GI 组与 GVI 组之间的差异具有统计学意义（P<0.05）。相反，GI 组的幼虫存活率（平均 28.7 天）较其他组（P<0.01）短。GV 组的最大存活时间最长（平均 49.8 天）。数据表明，拉氏锐缘蜱的卵聚集会影响孵化期和幼虫存活率。
