摘要
对小翅稻蝗翅型构成的季节变化 ,长翅型、短翅型产卵前期间的差异及光周期对翅型分化的影响进行了调查 ,结果表明 ,小翅稻蝗存在着明显的翅多型现象 ,相对翅长 (前翅长 /后足腿节长 )最长可达 1 .4 9,最短只有 0 .50 ,翅长呈连续性双模态分布。早期羽化的个体大多为长翅型 ,随着季节的推移 ,羽化成虫短翅率逐渐增加。长翅型雌成虫的产卵前期间为4 2 .7± 1 3.1日 ,短翅型为 1 5.3± 6.4日 ,短翅型雌成虫的产卵前期间显著短于长翅型。不同的光周期短翅成虫出现的比例不同 ,光照短于 LD1 2 :1 2时 ,几乎全为短翅型 ,LD1 4 :1 0短翅率为 66.8% ,LD1 6:8则长翅率达 62 .1 % ,光照长于LD1 8:6时 ,几乎全为长翅型。
The seasonal change of wing form and effect of different photoperiod of rice grasshopper,Oxya yezoensis Shiraki were investigated in the field and in the laboratory.The frequency distribution of relative wing length of adults showed a continuous bimodality with brachypterous and macropterous forms.There was large variation in each morph and only the latter types can fly.On July 28 most adults were in brachypterous form,afterwards the percentage of macropters gradually increased and then most adults were found in macropterous form on October.The preoviposition period of brachypterous females were 42.7 ±13.1 days and macropterous females were 15.3±6.4 days.It was significantly different between brachypters and macropters.Most adults were macropters under photoperiod shorter than LD 12∶12,with a percentage of macropters 66.8% under LD 14∶10 and 37.9% under LD 16∶8.Most adults were brachypters under photoperiod longer than LD 18∶6.
出处
《生态学报》
CAS
CSCD
北大核心
2001年第4期624-628,共5页
Acta Ecologica Sinica
基金
日本弘前大学攻读博士学位时研究内容的一部分
关键词
翅多型现象
小翅稻蝗
产卵前
光周期
水稻害虫
wing polymorphism
Oxya yezoensis
rice grasshopper
preoviposition photoperiod
