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copulatory pattern and behavior in a semi-captive population of Eld＇s deer

Current Zoology 2011年第3期57卷 284-292页

作者： Zhigao ZENG Yan-Ling SONG Qiong ZHANG Institute of Zoology Chinese Academy of Sciences Beijing 100101 China

Male copulatory patterns, female multiple copulation and male post-copulatory guarding were studied in Eld＇s deer Cervus eldi in Datian National Nature Reserve, China. Mating behavior in 18 females and 11 males from a group of 61 semi-captive Eld＇s deer were observed. The majority （55.8%） of copulations occurred between 15：00-19：00 h. The ejaculatory mount was preceded by an average of 5.1 prior mounts. Successful copulation consisted of a single thrust with ejaculation during one intromission, with no lock. This copulatory pattern is classified as pattern No. 15 （no lock, no intravaginal thrusting, single intromission, and multiple ejaculation） and No. 16 （no lock, no intravaginal thrusting, single intromission, and single ejaculation） under Dewsbury＇s scheme （1972） and as No. 16 （no lock, no thrusting, single and brief intromission） under Dixson＇s classification （1998）. Copulation frequency was 1.5 ± 0.9 times for males/females with the same female/male per day. The duration of the final mount, which included ejaculation, was brief （3.4±1.3 s）, and ejaculation usually terminated copulation. Eleven females copulated more than once in this study： three of them copulated with several males （multi-male copulations） and the remainder copulated with a single male （repeated copulations）. Our results indicate that some female Eld＇s deer may seek multiple copulations to be a strategy to improve the genetic quality of their offspring or to avoid harassment. post-copulatory guarding of females by males followed all copulations, with dominant males guarding for significantly longer than subordinate males. Dominant males appear to be more effective at post-copulatory guarding than subordinate males. Subordinate males engaged in a quicker pre-copulatory phase to improve their chances of finishing copulation before being forced to accede to dominant males [Current Zoology 57 （3）： 284-292, 2011].

关键词： Cervus eldi copulatory pattern Female multiple copulation post-copulatory guarding Dominant male Subordinate male

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copulatory pattern and behavior in a semi-captive population of Eld's deer

Copulatory pattern and behavior in a semi-captive population...

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第七届全国野生动物生态与资源保护学术研讨会

作者： Zhi-Gao ZENG Yan-Ling SONG and Qiong ZHANG (Key Laboratory of Animal Ecology and Conservation Biology,Institute of Zoology,Chinese Academy of Sciences,Beijing 100101,China)

Male copulatory patterns,female multiple copulation and male post-copulatory guarding were studied in Eld’s deer Cervus eldi in Datian National Nature Reserve,*** behavior in 18 females and 11 males from a group of 61 semi-captive Eld’s deer were *** majority(55.8%) of copulations occurred between 15:00-19:00 *** ejaculatory mount was preceded by an average of 5.1 prior *** copulation consisted of a single thrust with ejaculation during one intromission,with no *** copulatory pattern is classified as pattern No.15(no lock,no intravaginal thrusting,single intromission,and multiple ejaculation)and No.16(no lock,no intravaginal thrusting,single intromission,and single ejaculation)under Dewsbury’s scheme(1972)and as No.16 (no lock,no thrusting,single and brief intromission)under Dixson’s classification(1998).Copulation frequency was 1.5±0.9 times for males/ females with the same female/male per *** duration of the final mount,which included ejaculation,was brief(3.4±1.3 s),and ejaculation usually terminated *** females copulated more than once in this study:three of them copulated with several males(multi-male copulations)and the remainder copulated with a single male(repeated copulations). Our results indicate that some female Eld’s deer may seek multiple copulations to be a strategy to improve the genetic quality of their offspring or to avoid ***-copulatory guarding of females by males followed all copulations,with dominant males guarding for significantly longer than subordinate *** males appear to be more effective at post-copulatory guarding than subordinate *** males engaged in a quicker pre-copulatory phase to improve their chances of finishing copulation before being forced to accede to dominant males.

关键词： Cervus eldi copulatory pattern female multiple copulation post-copulatory guarding dominant male subordinate male

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