交配

The most recent sighting of the surviving Manyeleti was in Buffelshoek on the morning of March 2nd, 2009. He was mating with Snaggletooth from the Nkuhuma Pride once again.

2009年3月2日的一个早上，我们在Buffelshoek地区又看到这只Manyeleti联盟的幸存者，那是目前为止我们最后一次看到他了，他又在和那只来自Nkuhuma狮群叫暴牙的雌狮交配了。

A mating dance has a female bird recovering from injuries after the couple slammed into a snowbank.

在这对夫妇猛烈撞击了一个雪堤后，交配出一只从受伤中复原的雌鸟。

MethodsNeural tubes isolated from the region between midotic placode and third somite of mouse embryo at ED 8.5d were cultured in DMEM/F12 serum-free medium containing basic fibroblast growth factor and epidermal growth factor. The cell cycle of CNCCs was analyzed with flow cytometry, the proliferation capability was determined by MTT method, AP-2α expression was detected by immunocytochemistry as a biological marker of cardiac neural crest cells. The features of migration, multi-directional differentiation were observed as well.

材料与方法成年2月龄C57／BL6小鼠交配，取ED8.5d小鼠胚胎枕中部至第3体节神经管，应用包含碱性纤维生长因子和表皮细胞生长因子的无血清培养基培养，利用MTT法检测细胞增殖能力，利用流式细胞仪检测细胞周期，采用转录激活因子2α(AP-2α，Activator protein-2α)作为其生物学标记物，观察其增殖状况、细胞周期、迁移、分化等生物学特性。

There's a good chance the two will mate next year, Spelman said.

斯佩尔曼认为，明年是两只熊猫交配的绝佳时机。

Methods: Adult mice of Kunming variety were used as experiment animals. After judgement of oestrus, the oestrus period and oestrus stage were determined, and then those mouse were grouped depending on oestrus stage. The mice were dealed with diferrent dosage of PMSG and HCG to make them superovulation, afterwords were mated individually with the male mouse together at same cage. The embryoes were rinsed out and evaluated after 3.5 days when the plug had been seen. The transplant mice were born after the high-quality embryoes were transferred into the receptors mouse uterus at the same oestrus stage which was stimulated by mating with the male mouse which spermaduct had been ligated previously.

以昆明系小白鼠为实验动物，取性成熟个体，先进行发情鉴定，确定其发情周期及不同的阶段，然后按发情阶段分组，分别用不同剂量的孕马血清促性腺激素和人绒毛膜促性腺激素进行超排处理并与公鼠合笼，在见栓后的第3.5天冲胚，对所得胚胎进行鉴定；将质量较好的胚胎选出，移入同期发情并经结扎公鼠交配刺激后见栓的受体小鼠子宫内，得到移植小鼠。

Near the female spider, spider hung in the distance waving constantly have to foot, if fixed Fuzhao female and male spider can be carried out close to the female mating, the male semen to be with their feet into the female spermatheca in .

在靠近雌蛛前，雄蛛在远处不断地挥舞脚须，若雌蛛伏着不动，雄蛛才得以靠近雌蛛进行交配，雄蛛用脚须把精液送进雌蛛的受精囊中。

The spermatozoa are embeded in a extracellalar matrix composed of high dense fibrils matrix and flocculent and concentric vesicles similar to that in the primary spermatophore layer, but the later lack of spermotozoa. The flocculent and concentric vesicles are often seen to release their contents around the main body of spermatozoa. The spermatozoa may absorb the contents to form vesicular zone and membrane zone in sperm nucleu. The secondary spermatophore layer is distinctly subdivided into inner region and outer region. The loose outer region consists of canaliculated reticulum and large flocculent vesicles.

输精管内的精荚为管状，由精子群、精荚基质及初级精荚壁和次级精荚壁组成，初级精荚壁与精荚基质是相连续的，它们之间无明显界限，两者均由电子密度较高的纤丝状基质和絮状泡和同心圆泡组成，但后者不含精子，后者中的絮状泡和同心圆泡常在精子主体部周围释放内含物，可能与形成精子细胞核中的泡状带和膜状带有关，在交配后的雌虾，其头胸部腹面上粘着的精荚中，其基质内已不见絮状和同心圆泡，仅见稀疏的纤丝。

To create a perfect Red Turquoise with brilliant red body wide and paralled striation of turquoise, red eyes and perfect finnage is still the most difficult task for any breeder in the world.

用绿松石的精采红色身体宽和paralled线状要创造一块完善的红色绿松石，红色眼睛和完善的finnage仍然是所有交配动物者的难题在世界上。

If you're lucky, you will get that perfect blend from a stud dog.

如果你够幸运，你可以通过与一只异系种公的交配，得到理想中的？？

This suggests that assortative mating has been enhanced in sympatry.

这表明选型交配在在同一个区域生存却不杂交而形成混合物种的动物之中增强了。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。