SPERM COMPETITION AND MELANIC POLYMORPHISM IN THE 2-SPOT LADYBIRD, ADALIA-BIPUNCTATA (COLEOPTERA, COCCINELLIDAE)

被引：20
|
作者：
DEJONG, PW
VERHOOG, MD
BRAKEFIELD, PM
机构：
[1] Section of Evolutionary Biology, Department of Population Biology, University of Leiden, Leiden, 2313
来源：
HEREDITY | 1993年 / 70卷
关键词：
ADALIA-BIPUNCTATA; FEMALE REJECTION; SEXUAL SELECTION; SPERM COMPETITION; THERMAL MELANISM;
D O I：
10.1038/hdy.1993.26
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Sperm precedence was investigated in the 2-spot ladybird, Adalia bipunctata by utilizing a di-allelic colour marker gene. Non-melanic (homozygous recessive) virgin females were mated once with a non-melanic male and after subsequent laying of fertile eggs they were mated with a melanic male of known genotype. Frequencies of colour morphs in the offspring provided evidence for almost complete second male sperm precedence, although the data from certain matings do not completely exclude the possibility of first male sperm precedence. The results are discussed in the light of the hypothesis of thermal melanism.
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页码：172 / 178
页数：7
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