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时间:2018-04-15
《切鳍标记对唐鱼游泳能力的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、动物学杂志ChineseJournalofZoology2014,49(6):930~937DOI:10.13859/j.cjz.201406018切鳍标记对唐鱼游泳能力的影响*刘明中林小涛许忠能徐采姚达章暨南大学水生生物研究所水体富营养化与赤潮防治广东普通高校重点实验室广州510632摘要:本研究通过测定完全切除背鳍、臀鳍、尾鳍或双侧胸鳍后唐鱼(Tanichthysalbonubes)临界游泳速度来评价切鳍标记对游泳能力的影响。研究结果表明,在速度增量(ΔU)为36mm/s,持续时间(Δt)分别为5min、10min、15min、20min、25mi
2、n、30min的条件下,唐鱼临界游泳速度会随着持续时间的延长而降a低。鳍组织完整的唐鱼[体长(24±1)mm],在不同持续时间(Δt)条件下,其绝对临界游泳速度(Ucrit)为(251.98±11.04)~(333.78±12.44)mm/s;同等条件下,切除唐鱼的背鳍或臀鳍均不会对其绝对临界游泳速度造成显著影响(P>0.05),但切除尾鳍或胸鳍后其临界游泳速度与对照组相比极显著降低(P<0.01),切除尾鳍后绝对临界游泳速度平均下降47.20%,切除胸鳍后平均下降22.98%,后二者间也存在极显著的差异(P<0.01)。研究表明,背鳍切除可作为野外唐
3、鱼短期标记-重捕的手段之一。关键词:唐鱼;临界游泳速度;鳍组织切除;标记-重捕;迁移中图分类号:Q955文献标识码:A文章编号:0250-3263(2014)06-930-08InfluencesofFinsAmputationonSwimmingAbilityofTanichthysalbonubes*LIUMing-ZhongLINXiao-TaoXUZhong-NengXUCaiYAODa-ZhangKeyLaboratoryforWaterEutrophicationandRedTideControl,DepartmentofEducation
4、ofGuangdongProvince,InstituteofHydrobiology,JinanUniversity,Guangzhou510632,ChinaAbstract:ThisresearchaimedatassessingtheinfluenceoffinsamputationtothefishswimmingabilityofTanichthysalbonubes.Weamputatedthedorsalfins,analfins,caudalfinsandpectoralfinsfullyaseachtreatmenttomeasur
5、ethecriticalswimmingspeedatdurations5min,10min,15min,20min,25minand30amin(Δt)underthespeedof36mm/s.Thenwecalculatedtheabsolutecriticalswimmingspeed(Ucrit)byaequationUcrit=Umax+(t/Δt)ΔU.AlltheobservedvaluewasanalyzedwithOne-wayANOVAandTwo-wayANOVA.Thecriticalswimmingspeedsofthetr
6、eatedfishbecameslowerastheswimmingdurationbecamealonger.Thecontrolfishwithintactfins(BL=24±1mm)hadabsolutecriticalswimmingspeed(Ucrit)from251.98±11.04mm/sto333.78±12.44mm/sindifferentdurationlength.Inthesamecondition,thecriticalswimmingspeedUcritwasnotsignificantlyinfluencebythe
7、dorsalfinsoranalfinsamputation(P>0.05).However,theUcritinthefishwithoutcaudalfinsorpectoralfinswassignificantlyinfluenced(P<0.01).Theremovalofcaudalfinsandpectoralfinsdecreased47.20%and22.98%oftheabsolutecriticalswimmingspeedscomparingwithcontrolfish,respectively(P<0.01,Fig.2).T
8、heexperimentalconclusionofthisresearchisthatthe
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