The biology of desert hamster was studied in Hunshandake desert in Inner Mongolia.Results revealed that the breeding duration of this species is from April to October.The average litter size of desert hamster is about...The biology of desert hamster was studied in Hunshandake desert in Inner Mongolia.Results revealed that the breeding duration of this species is from April to October.The average litter size of desert hamster is about 6.7,with 3 and 10 litters as extremes.The birth weight of desert hamster is about 0.7~0.8 gram.Juveniles reach a steady body mass at the age about 2-month-old.The growth course can be fitted by a sigmoidal curve.The main diet of desert hamster is seeds (70~90%) and insects or worms (10%~30%) in the Hunshandake desert.展开更多
研究了上海市水源涵养林内樟颈曼盲蝽(Mansoniella cinnamomi(Zheng et Liu,1992))的生活史和生物学习性,以及若虫的龄期划分和各龄若虫的形态特征。依据樟颈曼盲蝽若虫头宽值频次和形态特征,其若虫共分5龄,1~5龄若虫的头宽值分别为(0....研究了上海市水源涵养林内樟颈曼盲蝽(Mansoniella cinnamomi(Zheng et Liu,1992))的生活史和生物学习性,以及若虫的龄期划分和各龄若虫的形态特征。依据樟颈曼盲蝽若虫头宽值频次和形态特征,其若虫共分5龄,1~5龄若虫的头宽值分别为(0.23±0.03)、(0.34±0.02)、(0.47±0.03)、(0.57±0.02)、(0.68±0.03)mm,并详细描述了各龄若虫的形态特征。该虫在上海地区一年发生4代,以卵在叶柄、叶主脉及嫩梢皮层内越冬,具有明显的世代重叠现象。确定了樟颈曼盲蝽各世代的发生历期,编制了其在上海地区的生活史表,详细观察记录了成虫的羽化、交尾、产卵等习性和若虫的活动、取食及脱皮等习性。展开更多
文摘The biology of desert hamster was studied in Hunshandake desert in Inner Mongolia.Results revealed that the breeding duration of this species is from April to October.The average litter size of desert hamster is about 6.7,with 3 and 10 litters as extremes.The birth weight of desert hamster is about 0.7~0.8 gram.Juveniles reach a steady body mass at the age about 2-month-old.The growth course can be fitted by a sigmoidal curve.The main diet of desert hamster is seeds (70~90%) and insects or worms (10%~30%) in the Hunshandake desert.
文摘研究了上海市水源涵养林内樟颈曼盲蝽(Mansoniella cinnamomi(Zheng et Liu,1992))的生活史和生物学习性,以及若虫的龄期划分和各龄若虫的形态特征。依据樟颈曼盲蝽若虫头宽值频次和形态特征,其若虫共分5龄,1~5龄若虫的头宽值分别为(0.23±0.03)、(0.34±0.02)、(0.47±0.03)、(0.57±0.02)、(0.68±0.03)mm,并详细描述了各龄若虫的形态特征。该虫在上海地区一年发生4代,以卵在叶柄、叶主脉及嫩梢皮层内越冬,具有明显的世代重叠现象。确定了樟颈曼盲蝽各世代的发生历期,编制了其在上海地区的生活史表,详细观察记录了成虫的羽化、交尾、产卵等习性和若虫的活动、取食及脱皮等习性。