ニホンヒキガエルBufo japonicus japonicusの自然誌的研究 : X 抱接と産卵

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タイトル別名
  • STUDIES ON THE NATURAL HISTORY OF THE JAPANESE TOAD, BUFO JAPONICUS : JAPONICUS. X. MATING AND SPAWNING BEHAVIORS
  • ニホンヒキガエルBufo japonicus japonicusの自然誌的研究-10-抱接と産卵
  • ニホンヒキガエル Bufo japonicus japonicus ノ シゼン

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抄録

During the breeding season nearly all matings of the Japanese toad Bufo japonicus japonicus occurred at night on land around the spawning pond. When a male caught a female, neighbouring unpaired males gathered and tried to mate with the pair. Many males (maximum 8) hugged each other tightly, forming a large ball of toads. Mated females generally spawned during this night or the next daytime, returning to their residental places immediately after spawning. However, a few pairs maintained amplexus for as long as 39 days. Females spawned only once each breeding season, but males were able to successfully copulate at least 3 times.

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