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1、第31卷第4期华南农业大学学报Vo.l31,No.42010年10月JournalofSouthChinaAgriculturalUniversityOct.2010密度胁迫对桔小实蝇的行为和生物学参数的影响任璐,陆永跃,曾玲(华南农业大学资源环境学院,广东广州510642)摘要:研究了高密度胁迫对桔小实蝇Bactroceradorsalis(Hendel)成虫行为及主要生物学参数的影响.结果表明,当雌、雄虫单独存在时随着密度的增大雌虫挑衅和梳理行为逐渐增加,活动行为逐渐下降;雄虫挑衅和梳理行
2、为逐渐增加,取食、振翅和活动行为呈下降趋势.与独立存在相比,两性共存时雌、雄虫的活动次数随着性比的增大明显增多.活动频次增大是桔小实蝇成虫对性比和密度增大的有效响应.高密度下成虫寿命缩短,雌虫生殖力下降.每笼30对雌雄成虫时单雌日产卵量为4096粒,显著低于3对雌雄成虫的1079粒.由高密度幼虫发育而来的成虫寿命和雌虫生殖力也显著降低,死亡速率明显较快,日累积存活率与年龄之间符合抛物线关系,而对照符合直线方程.幼虫期高密度提高了蛹期对高温的耐受力.关键词:桔小实蝇;密度胁迫;行为;生物学参数中图分类号:S968.1文献标
3、识码:A文章编号:1001411X(2010)04002705EffectofHighDensitiesonBehaviorandBiologicalParametersofBactroceradorsalis(Hendel)RENLu,LUYongyue,ZENGLing(CollegeofResourcesandEnvironment,SouthChinaAgriculturalUniversity,Guangzhou510642,China)Abstract:Theinfluenceofhighdensities
4、onthebehaviorandbiologicalparametersoforientalfruitfly,Bactroceradorsalis(Hendel),adultswerestudied.Theresultsrevealedthattheprobabilityofaggressionandpreeningbehaviorofthefemaleandmaleincreased,whiletheactivitybehavioroffemale,andfeeding,wingfanningandactivityofmaledec
5、reased,whenthesinglesexualadultprogressed.Comparedtothesinglesexualadulttreatmen,ttheprobabilityofadultactivityincreasedobviouslywhenthefemalesandmaleswerekeptinthesamecage.Thehighdensitymadetheadultlifespanshortenedandcausedfemalefecunditydecreased.Itwasshowedthat4096e
6、ggsofthefemaleaverageeggsperdayfromthedensityof30pairsofadultswaslowerthan1079eggsfromthedensityof3pairsadultssignificantly,andthelongevityandfecundityofadultsdevelopingfromthehighdensityoflarvaealsodecreasedandtheirdeathwasdramaticallyaccelerated.Therelationshipbetwee
7、nadultsdailycumulativesurvivalcapabilityandagescouldbefittedintoaparabolaequation,whilealinearequationfittedforthecontro.lAlthoughthecrowdingdensityoflarvaecouldmakethesurvivalabilityofadultsweakened,buttheirpupaehadabetterheattolerance.Keywords:Bactroceradorsalis;densi
8、tystress;behavior;biologicalparameters桔小实蝇Bactroceradorsalis(Hendel)是亚太地年代中期以后该虫才在我国华南、西南地区种群迅区果树种植业的
