This incubation adjustment of parents makes the synchrony in hatching and the hatching intervals of nestlings shorter than the laying intervals of eggs. this phenomenon was perhaps resulted from the incubating behavior difference of parents in laying time and incubating time. the research also found that the growth rate and survival rate in the latest hatched nestlings in little egret were lower than the earlier hatched ones
卵的
孵化時間與產卵順序呈負相關性,先產的卵比后產的卵所需
孵化時間相對較長,此現象產生是由於親鳥在產卵期和產卵后的
孵化行為不一致造成的,這種
孵化調節使同一窩雛鳥
孵出時間具有相對集中的趨勢,雛鳥
出殼的時間間隔比產卵的時間間隔短;另一方面,在白鷺雛鳥的生長過程中,最晚
出殼的雛鳥生長水平和成活率明顯落後于早
出殼的雛鳥,而池鷺由於窩卵數和窩雛數為5的數量相對較少,雛鳥生長均衡。
Don ' t count your chickens before they are hatched
小雞還沒
孵出來,先別忙著數有幾只。
The father then looks after the eggs for about two months, until they hatch and leave the pouch
海馬爸爸大約要照看這些受精卵兩個月的時間,直至小海馬
孵出,離開育兒袋為止。
Chicks are hatching from the eggs
小雞正從蛋殼里
孵出來。
Don ' t count your chickens before they ' re hatched
雞蛋未
孵出,先別數小雞。 (不要過早樂觀。 )
However, this fur - covered mammal lays eggs from which the babies are hatched
但是,這種全身毛皮的哺乳動物卻是通過產卵
孵出小鴨嘴獸的。
Don ' t countyour chickends before the are hat
小雞未
孵出前,數也沒用;別打如意算盤。
So for some special patients, zona drilling or local zona thinning with increased z ptv may help embryo hatching. at the same time, different types of assisted hatching have been developed, such as mechanical tearing, chemical digesting and laser burning
因此,對一些特殊病人進行透明帶打孔或局部減薄提高zptv或許有助於胚胎
孵出及種植;與此同時,多種輔助
孵出方法也在被人們嘗試使用,如機械切割法、酸化學溶解法和新近使用的激光燒灼法。
" if a kangaroo laid an egg from which an ostrich hatched, that would surely be an ostrich egg, not a kangaroo egg.
「如果袋鼠生的蛋
孵出了鴕鳥,那應當說它是一隻鴕鳥蛋,而非袋鼠蛋。 」
Egg-bore diseases are those which are transmitted from the infected dam to the newly hatched offspring by means of the fertile egg.
凡能從感染母雞通過受精蛋傳給所
孵出後代的疾病,稱為蛋媒疾病。
Surprisingly, heterogeneous sperm from other species of fish, besides stimulating and activating development of the egg, are able to contribute to the phenotype of gynogenetic offspring, that is allgynogenesis. the patterns of expressions in five isozymes ( est, mdh, me, sod and ldh ) were investigated in the embryogenetic stages of gynogenetic crucian carp ( carassius auratus of pengze ) activated by homogenous and heterogeneous sperms
Mdh的差異有兩點,在同源精子激發的胚胎中, mdh6 』表達至心博期后消失,但在異源精子激發的胚胎中, mdh6 』持續表達至
孵出期;在
孵出期,異源精子激發的胚胎比同源精子激發的胚胎多
出兩條帶mdh4 』和mdh5 』 。
Effect of temperature on incubation and thermal tolerance of the chinese forest frog
溫度對中國林蛙卵孵化和孵出熱耐受性的影響