【摘要】 森林革蜱Dermacentor silvarum Olenev吸血后的体重在15.3毫克至800毫克的个体皆可产卵。不同体重各组产卵前期所需的日数无显著区别,但在体重最轻者(15.3—35.5毫克)产卵前期延长。产卵日数、产卵量与体重有关,体重重者产卵期延长,产卵量多;反之,则产卵期短,产卵量少。饱食雌虫单位体重的产卵能力为8.5。更多还原

【Abstract】 The egg production by Dermacentor gilvarum Olenev. of different post-meal body weights has been studied. The 44 ticks with body weights ranging from 15.3 to 800.0 mg can all lay eggs. Their pre-ovipositional periods show no difference except the lightest ticks (15.3 to 35.5 mg) whose pre-ovipositional periods are prolonged. During the ovipositional periods the percentages and accumulated percentages of eggs laid by the different body weight groups on different days are shown in Fig. 1-5. The duration of oviposition and the total number of eggs laid are related to the body weight of the engorged female. The smaller ticks lay less eggs than those of optimal body weights ranging from 400 to 800 mg.更多还原