四紋豆象(Callosobruchus maculatus)之配偶選擇、產卵決策與生活史策略
Date Issued
2002
Date
2002
Author(s)
洪淑彬
DOI
902313B002336
Abstract
The studies on animals indicated that their
life history and reproductive strategy could be
affected by some male traits, such as male body
size, when such traits actually influence female
fecundity, longevity, offspring quality or
mating behavior. Studies of seed beetle
indicated that the male transfers considerable
nutrients to the female via ejaculates. Such
nutrients are incorporated into female’s somatic
and reproductive tissues, which in turn increase
female’s longevity, fecundity and offspring
quality. Male’s nutritive contribution can vary
with male size and thus it may vary
considerably among individuals. Because the
amount of nutrient that females received may
be influenced by body size of males they mated
with, females may benefit in several ways by
discriminating different males, that is, females
may exhibit “female choice”. In this study, we
examined the influence of male body size of
adzuki seed beetle, Collosobruchus chinensis,
on mating success, mating behavior and female
fecundity. Our results showed that, female’s
body size of adzuki seed beetle represented a
major influence on lifetime fecundity, offspring
quality and mating behavior. While male body
size showed little or no effects on female
fecundity, offspring quality and mating
behavior. However, the courtship behavior
showed considerable variation among males,
and the courtship duration was positively
correlated with mating duration. This result
indicates that male behavior may influence
female fecundity by affecting the persistence of
mating. On the other hand, the analysis of
rejection behavior showed a significant
difference between mating or non-mating pairs,
which implied female choice exists in the
mating decision. The representation of female
choice was not affected by male body size,
instead, it may be influenced by other male
traits, such as male courtship ability, or other
male effects which remains to be explored.
Subjects
male body size
mating behavior
seed beetle
female choice
Publisher
臺北市：國立臺灣大學昆蟲學系暨研究所
Type
report
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