中华蟾蜍指名亚种(Bufo gargarizan gargarizan)早期胚胎发育
The Early Embryonic Development of Bufo gargarizan gargarizan
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摘要: 2006年1—2月份对中华蟾蜍指名亚种的早期胚胎发育和产卵行为进行观察.结果表明,蟾蜍整个产卵时间为6.18±0.73 h(N=4),其中雌性产卵8.00±1.20次,雄性射精9.25±1.31次.产卵中,雌性产卵的时间间隔为0.75±0.06 h(N=39),抱对的蟾蜍要游到水面上呼吸,两次呼吸间隔为1.39±0.23 h(N=11).雌蟾蜍最后一次产卵到雌雄分开所需时间为0.96±0.19 h(N=7).从受精卵期至鳃盖完成期,胚胎发育可分为23个时期,在6℃~10℃的水温条件下,历时1111.23±21.64 h(N=7).Abstract: The early embryonic development and oviposition behavior of Bufo gargarizan gargarizan were investigated from January to February in 2006.The results showed that the whole spawning time was 6.18 ± 0.73 h(N=4).The number of lay eggs was 8.00 ± 1.20;male ejaculation was 9.25 ± 1.31.The time interval of lay eggs was 0.75±0.06 h(N=39),and 1.39 ± 0.23 h was two respiratory time interval during whole spawning.0.96 ± 0.19 h(N=7) was needed for the separation of male and female from the time when the eg...