Some constraints on reproduction for male bushcrickets, Requena verticalis (Orthoptera : Tettigoniidae) diet, size and parasite load
Some constraints on reproduction for male bushcrickets, Requena verticalis (Orthoptera : Tettigoniidae) diet, size and parasite load
复制标题
对雄性蟋蟀、Requena Verticalis（直翅目：Tettigoniidae）的饮食、体型和寄生虫负载的繁殖的一些限制
DOI：
10.1007/bf00164046
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发表时间：
1993
影响因子：
2.3
通讯作者：
L. Simmons
中科院分区：
文献类型：
--
作者：
L. Simmons
雄性蟋蟀的繁殖在能量上是昂贵的。MaleRequena verticalis每天投入70%的能量储备来吸引雌性并为她提供营养的精荚。因此，雄性的交配频率可能会受到限制。我调查的限制生殖身体大小和原生动物肠道寄生虫的水平时，男性喂养的饮食，不同的营养价值。男性遭受的繁殖成本方面的增加交配之间的间隔是独立的饮食和寄生虫感染。连续三次交配后，男性降低了求爱喂养时，饲料中的蛋白质含量低的投资幅度。此外，这些男性遭受的次数减少，他们能够交配相对于男性喂养的饮食富含蛋白质。男性的大小限制交配频率丰富和贫穷的饮食，小男性能够交配频率低于大男性。饲料和寄生虫感染对雄性交配频率的影响存在交互作用。严重感染的男性交配频率低于未感染的个体时，喂养穷人的饮食。然而，喂食丰富饮食的雄性能够克服寄生虫感染带来的限制。生殖的限制进行了讨论，生殖成本及其对求偶角色的影响。
Reproduction for male bushcrickets is energetically expensive. MaleRequena verticalisinvest 70% of their daily energy reserves in calling to attract a female and providing her with a nutritious spermatophore. Males are thereby likely to be constrained in their mating frequency. I investigated constraints on reproduction imposed by body size and the levels of a protozoan gut parasite when males were fed diets that differed in their nutritional value. Males suffered a cost of reproduction in terms of an increasing interval between matings that was independent of diet and parasitic infection. After three successive matings, males decreased the magnitude of investment in courtship feeding when fed a diet poor in protein. Furthermore, these males suffered a reduction in the number of times they were capable of mating relative to males fed a diet rich in protein. Male size constrained mating frequency on both rich and poor diets; small males were able to mate less frequently than large males. There was an interaction between the effects of diet and parasitic infection on male mating frequency. Heavily infected males mated less frequently than uninfected individuals when fed the poor diet. However, males fed the rich diet were able to overcome the constraints imposed by parasitic infection. Reproductive constraints are discussed in relation to the costs of reproduction and their effects on courtship roles.