It includes as follows:(1) That the right acceptance probability to decide the initial value temperature should be 0.6 are presented by experiment. For the first time, crossover and mutation operator are used in populations to calculate the initial value of temperature. At least the initial value of temperature is 〓.(2) Replacing random change operator with crossover and mutation operators.

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When male mated consecutively in a night, mating interval, duration for mating, each mounting, intromission and the last mount, and copulatory mass kept constant, suggesting that male possess a pattern of constant mating investment, which might result from intense sperm competition in this species.

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By the contrast between common population and inbreeding population, we know that the sameness of them are they all take the population for the synthesis of panmixia and selfing or inbreeding.

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For allopatric species, asymmetric ethological isolation was apparent in crosses between O. chinensis formosana and O. yezoensis: females of O . chinensis formosana readily accepted males of O. yezoensis, but females of O. yezoensis show reluctance to males of O. chinensis formosana; howe ver, in either reciprocal cross sperms were transferred.

分布不重疊的中華稻蝗臺灣亞種與小翅稻蝗之間，小翅稻蝗的雌蟲與中華稻蝗臺灣亞種雄蟲的交配率顯著低于種內(nèi)交配自拍日韩动漫欧美在线观看网站，反向交配時則和種內(nèi)交配率無顯著差異久久精品推油按摩；正反交配都能完成精子傳送，顯示出不對稱91亚洲精品视频、不完全的行為隔離色色色网址免费，而無機械隔離的存在。

When mating virgin females, males decreased investment in the form of copulatory plug, but increased investment in the form of behaviors, such as increased mating duration, shorten mating interval, longer duration for mountings and intromissions.

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Uses giemsa's dye and microscope observe bursa copulatrix sperm of silkworm directly, artificial insemination using the sperm, the studies shows: The seminal fluid is similar in the male moth seminal vesicle and in the female bursa copulatrix after mating 20 to 30 minute, and the seminal fluid is contains large number of eupyrene sperm bundles and not be activated.

采用姬姆薩染色及顯微鏡下直接觀察家蠶交配囊中精液，并用交配囊精液進行人工授精99re视频在线蜜，研究發(fā)現(xiàn)：交配20~30 min雌蛾交配囊中精液與雄蛾儲精囊中精液一樣黄色视频99精品视黄色小说频，精液未被活化，含有大量有核精子束亚洲欧美日韩中文视频在线观看。

The mate choice of Brandt′s voles Microtus brandti was investigated in the laboratory to study the mating system of this species. It was found that the female voles spent significantly more time visiting the partners than the strange males, but the male voles did not show any preference of the partners to the strange females. A female vole showed no difference in the copulatory behavior between an unfamiliar male and a familiar male which had copulated with her for 15 minutes, but she visited and fought the unfamiliar male significantly more than the familiar male. A male vole significantly preferred visiting and mating with an unfamiliar oestrous female to a familiar female which had copulated with him for 15 minutes.

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Cotton bollwormis a polyandrous insect, and it can carry out the seconcd mating after 1d post-first-mating, and the loss substance in MAG can be compoletely supplemented with24-36hrs after mating.

棉鈴蟲蟲是一種多次交配的昆蟲，雄蛾交配后一天即可進行二次交配全国免费人人干，交配后的棉鈴蟲雄蛾MAG腔內(nèi)損失的物質(zhì)只需24-36小時即可補充完畢高清三级黄色淫妇。

The calling and copulation behaviour of Ancylis sativa Liu had a dielperiodicity.The female moths began to calling at the first day and increasedto 100% at the second day,then the percentage of calling decreasedgradually from the third day to the fifth day,only 16.7% of females showingcalling behaviour at the sixth day.The effect of environmentaltemperature on calling behaviour of Ancylis sativa Liu was studied duringadult life at 16℃,21℃,26℃ and 31℃.The result showed differenttemperature during adult life affected significantly the calling behaviour ofvirgin females.There was considerable variability in the calling patternsamong the different temperature groups,the higher the temperature was,thelater females called,the shorter the calling behaviour lasted.The copulationbehaviour of Ancylis sativa Liu can be divided into following squence:female calling,male responsing,male approaching female,hairpencil displayingand copulating.

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The fertile ratio of isolates from Jiangsu was 22.77%on average. Among them only 23 crosses produced ascospores and the ratio was 7.1%. But the fertile ratio showed great variation annually, 26.61%in 1997, 8.26%in 1998 and 33.64%in 1999 respectively. In addition, the fertile ratio of tested isolates collected from different areas was also dissimiar., 26.15%and 25.42%from Tongzhou and Ganyu, and only 15.38%from Yixing.

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