Madder M, Torreele G, Berkvens D
Department of Animal Health, Institute of Tropical Medicine, Antwerpen, Belgium.
Exp Appl Acarol. 1996 Nov;20(11):659-65. doi: 10.1007/BF00053329.
A selection of the 10% lightest and 10% heaviest males and females of a population of individually weighed Rhipicephalus appendiculatus Neumann adults was made in two experiments. The offspring of homologous pairs were followed until the next adult stage (light x light, control x control and heavy x heavy). The engorged nymphal weights, unfed adult weights, engorged female weights of the parents, egg mass weights, egg weights, larval scutal lengths, engorged larval weights, unfed nymphal weights, engorged nymphal weights and adult weights of the progeny were determined. No significant differences could be demonstrated between the two lines for egg weight, larval scutal length, engorged larval weight and unfed nymphal weight. Significant differences were found between the egg masses, engorged nymphal weights and adult weights of the two lines. The heritability coefficients of body weight determined from adult to adult were 0.14 and 0.10, respectively, during the first and second experiments. Considering females and males separately, the coefficients were 0.10 and 0.18 during the first experiment and 0.12 and 0.09 during the repeat experiment respectively.
在两项实验中，从单独称重的成年纽氏扇头蜱种群中挑选出体重最轻的10%和最重的10%的雄性和雌性个体。对同源配对的后代进行跟踪，直至其进入下一个成年阶段（轻×轻、对照×对照和重×重）。测定了亲代饱血若虫体重、未进食成虫体重、饱血雌虫体重、卵块重量、卵重、幼虫盾板长度、饱血幼虫体重、未进食若虫体重、饱血若虫体重以及子代成虫体重。在卵重、幼虫盾板长度、饱血幼虫体重和未进食若虫体重方面，两条品系之间未显示出显著差异。在卵块、饱血若虫体重和成虫体重方面，两条品系之间存在显著差异。在第一次和第二次实验中，从成虫到成虫测定的体重遗传力系数分别为0.14和0.10。分别考虑雌性和雄性时，第一次实验中的系数分别为0.10和0.18，重复实验中的系数分别为0.12和0.09。
