Male’s copulation investment, including spermatophore; sperm investment were very high in the Chinese bushcricket Gampsocleis gratiosa. The effects of mating status of both males; females on male’s copulation invest...Male’s copulation investment, including spermatophore; sperm investment were very high in the Chinese bushcricket Gampsocleis gratiosa. The effects of mating status of both males; females on male’s copulation investment were examined in this study. The fresh weight of spermatophylax increased positively with the weight of males’ body. This indicated that the nutritional investment during copulation depended on male’s quality. Spermatophore investment showed insignificant differences in every copulation protocols. This finding supported the paternal investment hypothesis, that is, males contributed to their offspring with little attention to their partners. Sperm releasing per ejaculation varied significantly among the trials. Males decreased 54.19% sperm in second mating than in its first mating, demonsrated that males regarded the first mating highly,; were more prudent in subsequent mating. These males’ strategies may contribute to the viability of the offspring.展开更多
文摘Male’s copulation investment, including spermatophore; sperm investment were very high in the Chinese bushcricket Gampsocleis gratiosa. The effects of mating status of both males; females on male’s copulation investment were examined in this study. The fresh weight of spermatophylax increased positively with the weight of males’ body. This indicated that the nutritional investment during copulation depended on male’s quality. Spermatophore investment showed insignificant differences in every copulation protocols. This finding supported the paternal investment hypothesis, that is, males contributed to their offspring with little attention to their partners. Sperm releasing per ejaculation varied significantly among the trials. Males decreased 54.19% sperm in second mating than in its first mating, demonsrated that males regarded the first mating highly,; were more prudent in subsequent mating. These males’ strategies may contribute to the viability of the offspring.
