Resource Allocation, Metabolic Rate and Hormonal Control of the Reproductive Organs and Flight Muscle in Male Adults of a Wing Dimorphic Cricket, Modicogryllus confirmatus

概要

論文の詳細を見る
The temporal changes in mass of the testis, accessory gland and flight muscle were compared between short-winged (SW) and long-winged (LW) male adults of a wing-dimorphic cricket, Modicogryllus confirmatus, to investigate the presence or absence of morph-specific resource allocation or a trade-off. No significant morph-specific difference was found in mass of the testis or the reproductive accessory gland at adult emergence. However, both organs were significantly heavier in SW morphs than in LW morphs on days 5 and 10. Mean testis weight increased slightly during the first 5 days, but decreased by one-third by day 20. The accessory gland grew bigger continuously and, by day 20, became 7.6 and 6.3 fold heavier than the weight at adult emergence in SW and LW morphs, respectively. LW males from which the hindwings were artificially de-alated at adult emergence to induce flight muscle histolysis (DLW) showed a pattern similar to that of SW ones. By limiting the food ration, it was found that LW morphs allocating energy resource to development of the flight muscle had smaller testes and accessory glands than SW or DLW males at day 5. This indicates the presence of a trade-off between flight capability and reproduction in males. Administration of a juvenile hormone analog, methoprene, stimulated the development of the testis but not the accessory gland. 20-hydroxyecdysone had no influence on either reproductive organ. Weight-specific oxygen consumption was inversely correlated to body size and age, but not influenced by the presence or absence or the physiological state of the functional flight muscle.
日本昆虫学会の論文
1999-09-25

Resource Allocation, Metabolic Rate and Hormonal Control of the Reproductive Organs and Flight Muscle in Male Adults of a Wing Dimorphic Cricket, Modicogryllus confirmatus

スポンサーリンク

概要

著者

関連論文

スポンサーリンク