第1个回答 2011-05-20
（不知道对不对）
This paper HuaiHua institute of farmland spots around Pelophylax nigromaculata side plait frog early embryonic development is studied. Through the field of frogs catch hold back feeding, collecting eggs in laboratory petri dishes, add water under 18 to 25 ℃ in training. To embryonic form the main physiological changes and characteristic as the foundation, will appear dark spots side plait frog early embryonic development is divided into 26 times, use photography stered microscope observation and measurement, and the results show that: the fertilized egg to the gills cover from the whole complete period so far 202.87 lasted (for embryonic development plus or minus 5.36) h (n = 9); This paper describes the various periods of morphological characteristics, discusses the formation of chuch embryologically with degradation, HuaiHua region has reported with other areas of dark spots side plait frog the similarities and differences among the embryonic development
本文对怀化学院周围农田黑斑侧褶蛙(Pelophylax nigromaculata)的早期胚胎发育进行了研究。通过野外捕捉抱对蛙带回实验室饲养，采集受精卵置于培养皿中，加泉水在18～25℃下培养。以胚胎形态变化和主要生理特征的出现为基础，将黑斑侧褶蛙的早期胚胎发育划分为26个时期，用摄影体视显微镜进行观察和测量，结果表明：从受精卵开始至鳃盖完成期为止的整个胚胎发育历时(202.87±5.36)h (n=9)；本文描述了各个时期的形态特征，讨论了胚胎发育中吸盘的形成与退化、怀化地区已报道的与其他地区黑斑侧褶蛙胚胎发育的异同点。
第2个回答 2011-05-20
本文对怀化学院周围农田黑斑侧褶蛙(Pelophylax nigromaculata)的早期胚胎发育进行了研究。通过野外捕捉抱对蛙带回实验室饲养，采集受精卵置于培养皿中，加泉水在18～25℃下培养。以胚胎形态变化和主要生理特征的出现为基础，将黑斑侧褶蛙的早期胚胎发育划分为26个时期，用摄影体视显微镜进行观察和测量，结果表明：从受精卵开始至鳃盖完成期为止的整个胚胎发育历时(202.87±5.36)h (n=9)；本文描述了各个时期的形态特征，讨论了胚胎发育中吸盘的形成与退化、怀化地区已报道的与其他地区黑斑侧褶蛙胚胎发育的异同点。
This paper HuaiHua institute of farmland spots around Pelophylax nigromaculata side plait frog (early embryonic development is studied. Through the field of frogs catch hold back feeding, collecting eggs in laboratory petri dishes, add water under 18 to 25 ℃ in training. To embryonic form the main physiological changes and characteristic as the foundation, will appear dark spots side plait frog early embryonic development is divided into 26 times, use photography stered microscope observation and measurement, and the results show that: the fertilized egg to the gills cover from the whole complete period so far 202.87 lasted (for embryonic development plus or minus 5.36) h (n = 9); This paper describes the various periods of morphological characteristics, discusses the formation of chuch embryologically with degradation, HuaiHua region has reported with other areas of dark spots side plait frog the similarities and differences among the embryonic development
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第3个回答 2011-05-23
This article publishes the investigation that that has been done on the farmland closes to Huaihua University. The development of early embryo of Pelophylax nigromaculata has been researched. By collecting the 抱对蛙 from the open field, and feed in the lab. The embryo has been breed in the Petri dishes by using fountain water under 18～25℃. Through the change of the shape of the embryo and the characteristics of physical development as the database, we has categorized the growth of the Pelophylax nigromaculata embryo to 26 phases. This significant investigation is done through observations and measurement by using a photographic stereomicroscope. The result is the following: From the zygote to the complete devolopment of the operculum , the whole process used (202.87±5.36)h (n=9)；Further details of each phase are being described in the article. Nevertheless, the discussion to the formation and degeneration of the acetabula during the growth of the embryo has also been written in the paper. Furthermore, HuaiHua region has also reported g the similarities and differences among the embryonic development of Pelophylax nigromaculata among other districts.
第4个回答 2011-05-21
This paper HuaiHua institute of farmland spots around Pelophylax nigromaculata side plait frog (early embryonic development is studied. Through the field of frogs catch hold back feeding, collecting eggs in laboratory petri dishes, add water under 18 to 25 ℃ in training. To embryonic form the main physiological changes and characteristic as the foundation, will appear dark spots side plait frog early embryonic development is divided into 26 times, use photography stered microscope observation and measurement, and the results show that: the fertilized egg to the gills cover from the whole complete period so far 202.87 lasted (for embryonic development plus or minus 5.36) h (n = 9); This paper describes the various periods of morphological characteristics, discusses the formation of chuch embryologically with degradation, HuaiHua region has reported with other areas of dark spots side plait frog the similarities and differences among the embryonic development.
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第5个回答 2011-05-20
In this paper, Huaihua surrounding farmland Pelophylax frog (Pelophylax nigromaculata) in early embryonic development were studied. By wild caught hold of the frog back to the laboratory rearing, collecting eggs placed in a Petri dish, add spring water in the 18 ~ 25 ℃ incubation. To embryo morphology and the emergence of the main physiological characteristics based on the Pelophylax early embryonic development of frog is divided into 26 stages, a stereomicroscope with photographic observation and measurements, the results showed that: starting from the fertilized egg to the completion of the gill cover the entire period of embryonic development until the last (202.87 ± 5.36) h (n = 9); This paper describes the morphological characteristics of each period to discuss the formation of embryonic development and degeneration sucker, Huaihua region and other areas that have been reported side spots fold similarities and differences between the embryonic development of frogs.