| （摘要内容经过系统自动伪原创处理以避免复制，下载原文正常，内容请直接查看目录。） 本文经由过程德国小蠊Blattella germanica对各类光周期及温度的反响，商量了其生涯史战略及其掌握机理。光周期对德国小蠊若虫发育的作用。德国小蠊不管是低温30℃，照样高温20℃，短日前提(LD 1212h)都能引诱其若虫发生滞育。德国小蠊的光周期反响形式属于永日型反响，永日前提(LD 168h)下疾速发育，短日前提下进入滞育状况。孵化后30日，从永日前提转移至短日前提若虫发育变缓，反之则加速。光周期、温度对若虫龄数发育的作用。成虫成仙时，LD 168h的前提下若虫阅历7个龄期，德语论文网站，LD 1410h为8龄，而LD 1212h为9龄。短日前提下，不只若虫发育较慢，若虫龄数也随之增多。30℃和25℃完成若虫发育阅历7个龄期，而20℃的温度前提下需阅历9个龄期。光周期和温度对德国小蠊滋生的作用。成虫成仙后，于25℃分歧光周期的前提下豢养，产卵后期间、产卵距离及每一个卵鞘的若虫孵化数目无明显差别，解释德国小蠊的卵不存在滞育景象。而在短日前提下，每一个卵鞘的孵化若虫数以25℃为最高，其次是20℃，30℃前提下最低。解释25℃是德国小蠊滋生的最合适温度，低温和高温对其滋生都邑发生晦气作用。温度对德国小蠊存活率的作用。不管是永日前提照样短日前提下，25℃的卵鞘存活率最高，分离为78%(LD 168h)和100%(LD 1212h)；其次为20℃，分离为25%(LD 168h)和73%(LD 1212h)在30℃的温度前提下卵鞘的存活率最低，德语专业论文，永日前提全体卵鞘逝世亡，短日前提下仅为18%。解释温度对卵鞘存活率有显作品用。若虫期的发育终点温度在10一13℃之间，成虫滋生发育终点温度为8。3℃，比若虫发育终点温度低2℃以上。德国小蠊在株洲地域1年产生1代，以若虫越冬。全部生涯史构成了以滞育、蜕皮和卵存活率为重要手腕的季候顺应战略，而这些战略又要遭到光周期和温度的掌握，从而其使生涯史与季候坚持同步，使其种群获得很好的繁衍。 Abstract: Through the process of Blattella germanica rising up recent years on all kinds of photoperiod and temperature response, to discuss the life history strategy and control mechanism. Effect of photoperiod on nymphal development of Blattella germanica. The German cockroach is low temperature of 30 DEG C no matter, still a high temperature of 20 DEG C (LD 1212h) on the premise of short can lure the nymphal diapause. Blattella germanica photoperiodic response pattern belongs to the permanent, type of response, permanent on the premise of 168h (LD) under rapid development, under the premise of short day enter diapause status. After 30 days of incubation, from the permanent transfer to short day on the premise of nymphs development premise becomes slow and accelerated. Effect of photoperiod and temperature on nymphal instars. The immortal, LD 168h under the premise of the 7 instar nymph experience, LD 1410h is at the age of 8, while LD 1212h is at the age of 9. Short day under the premise of not only the slow development of nymphal instar number also increased. 30 degrees and 25 degrees to complete the 7 instar nymph development experience, and the temperature is 20 DEG C under the premise to experience 9 age. Effects of photoperiod and temperature on Breeding of Blattella germanica. Adult immortal, in under the premise of 25 DEG C different photoperiod captive, post spawning period, spawning number of nymphs hatch distance and each egg scabbard had no significant difference, explain the German cockroach egg diapause phenomenon does not exist. In short, under the premise of each egg hatching nymphs of over 25 DEG C sheath was the highest, followed by 20 DEG, 30 DEG C under the premise of the minimum. Explain the 25 C is the German cockroach infested the most suitable temperature, low temperature and high temperature on the occurrence of adverse effects will breed. The effect of temperature on the survival rate of Blattella germanica. Whether it is permanent, the premise still short on the premise that 25 DEG C ootheca survival rate is the highest, the separation for 78% 168h (LD) and 100% (LD) 1212h; secondly 20 DEG C, separation for 168h (LD) 25% and 73% (LD) 1212h in 30 DEG C temperature under the premise of ootheca survival rate was the lowest, permanent on the premise of all the ootheca death, under the premise of short day is only 18%. There was a significant effect of the temperature on the survival rate of eggs. The development of the end temperature of nymphal stage between 10 and 13 DEG C, end temperature of 8 breeding adult development. 3 C, development end temperature above 2 degrees lower than the nymphs. The German cockroach in Zhuzhou region in 1 years to produce the 1 generation, the nymph overwintering. All life history constitute to diapause, molting and egg survival rate for season of an important means of adaptation strategies, and these strategies also was master of photoperiod and temperature, thus it causes the life history and the seasons to synchronize, enable the population to obtain good reproduction. 目录: |
