Males and females only commingle during mating season, otherwise they live solitary existences.
公兽和母兽只有在配季节才混到一起,否则他们分开独自居住。
Cranes take from four to seven years to mature before they pair up.
鹤要四至七岁才成熟配。
The mating rituals of the cubera snappers have nothing, though, on squid.
古布拉金线配仪式没有什么看头,但鱿就不同。
Polyandrous - A mating system in which females mate multiple males.
Polyandrous -一种配系统,其中女性队友多男性。
Birds pair and build nests in spring.
鸟在春天配、筑窝。
The queen bee is likely to mate with two or three drones.
后蜂可能会与两三只蜂配。
It is often difficult to get animals to mate in captivity.
常常很难使被关物配。
The hybrid from a donkey and a horse is called a mule.
驴和马配生出杂种叫骡子。
A tigon is a cross between a tiger and a lion.
虎狮是老虎和狮子配产品。
Many birds mate in the springtime.
许多鸟在春天配。
90. The mating system can be changed in a quick and simple manner, from monoecy to dioecy.
用较快而简洁方法使配系统从雌同变成雌。
Birds mate in spring.
鸟在春天配。
The male shows elongated rays in its anal fin and yellow pearl organs on the jaws and opercula during breeding season.
臀鳍鳍条特长,配季节两颌和鳃盖会长出黄色珠星。
Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.
大多数关于种子园理论,是以假定能发生随机配和自花受精而不会成为严重问题为依据。
After mating and oviposition, statistics showed that the higher of the percentage of small eggs is, the more of the unlaid eggs is.
配产卵后,初步统计发现小卵百分率越大,则遗腹卵有越多倾向。
The grass grows and the horse is ruttish, how reasonable the natural is in turn. The copulation in mule market has become the common thing.
草长马发情,这种自然界替是多么合乎情理。骡马市上配也就成了情理之事。
Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.
摘要同型孢子蕨类孢子体可经由同配子体自、配子体配两类配育系统或以无配生殖方式产生,配子体配又可分为配子体自和配子体两种方式。
Q.I have a soft-drink bottle cap with a trivia item printed inside that says that if a sheep and a goat mate, the offspring is a geep.
我有一个内印有琐事条目软饮料瓶帽,上面写着,如果一只绵羊与一只山羊配,其后代即是一只山绵羊(吉普羊)。
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When he finds one, he alights and mates.
当它找着了,就降落下来。
There's not an animal on this planet that will copulate with anything that comes along.
世界上任何一种动物都不会饥不择食地寻找活物进行。
It's the mating season and male paddy frogs are competing for the attention of females.
现在是的季节,雄禾田蛙们为了吸引异性而卖力高鸣。
But for male birds, music is actually part of a testosterone-fueled mating ritual.
但是对于雄鸟而言,歌声实际上只是由雄性激素引发式的一部分内容。
Mayflies come out of rivers or streams where they develop to mate.
蜉蝣从河流或溪流出来进行。
No one has reported seeing narwhals eat or mate underwater.
从来没有人目睹独角鲸在水下进食或。
It is presumed that early males and females had sex with many partners.
据推测,早期的人类会与许多异性。
Inbreeding is when a young animal is born from closely related parents.
近亲是指幼仔由亲缘关系密切的父母繁殖而来。
They come together to mate in spring and early summer.
他们在春天和初夏才聚在一起进行。
At mating time the males are noisy and quarrelsome.
在季节,雄性考拉会变的很吵且好斗。
From an evolutionary perspective getting out there and mating would increase the odds of predation.
从进的角度来看,外出会增加被捕食的几率。
And it is an important factor in their mating decisions.
这也是它们的抉择的重要考量因素。
So that was an advertisement call from the peak of the mating season.
这是季节正盛时的求偶声。
They mate, they lay eggs and they die.
它们、产卵,然后死亡。
And that's the sound of the mating call so they can respond to us.
这是的声音信号,这样它们就会对我们做出回应。
Hares have long been thought to behave excitedly in March, which is their mating season.
人们一直认为野兔在三月会变得兴奋异常,因为三月是它们的季。
Laysan albatrosses mate for life. They lay one egg a year.
黑背信天翁一生只与一名伴侣。每只产一枚蛋。
The Gordian worm needs water to mate, but the cricket prefers dry land.
蠕虫需要水 但蟋蟀喜欢乾燥的土地。
They use vocalizations for mating and territorial displays and to coordinate group movements.
它们利用发声来进行和领地捍卫,还有协调群体行动。
And for a successfully mated female, her work is only beginning.
而对成功的雌蚁而言,她的工作才刚拉开序幕。
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