甲®¼é‍ ( 足目 )...

Download 甲®¼é‍ ( 足目 ) è„«®¼’Œˆé•·

Post on 15-Jan-2016

102 views

Category:

Documents

10 download

Embed Size (px)

DESCRIPTION

甲殼類 ( 十足目 ) 脫殼和成長. Introduction. 甲殼類在成長過程中,每隔一段時間就要脫去舊殼,使身體不斷的成長,然後重新長出新的殼,如此循環運作變化,就形成了脫殼週 ( Molt cycle ) 。甲殼類在脫殼的過程中,身體迅速吸水膨脹,再脫去舊殼,新殼層生長,然後硬化形成新殼。在這個過程中,無論對其行為、呼吸、排泄、滲透壓調節、內分泌等生理都會產生極大的變化,甚至與生殖也息息相關。 因此,本次主要針對十足目的脫殼和成長進行報告,並進一歩介紹脫殼激素的調控機制。. 一、脫殼分期. - PowerPoint PPT Presentation

TRANSCRIPT

  • ()

  • Introduction ( Molt cycle )

  • (postmolt) : A1,A2 , B

    (intermolt)C (premolt) D0 , D1 ,D1 , D1 ,D1 , D2 , D3

    (molt)E

  • S, setal shaft; SL, setal lumen; SC, setal cone ; SB, setal base; SN, setal node ; EL, epidermal line; OC,old cuticle ; NC culticle ; new setae.(penaeus mondon)

  • (molt)E

  • (postmolt) : A1,A2 , BB(endoculicle)a B c (:chitin synthesis)

  • (intermolt)C:

  • (premolt) D0 , D1 ,D1 , D1 ,D1 , D2 , D3D3:Ca2+

  • Eats old exoskeletonChanges in weight of Gecarcinus lateralis during a molt cycle. Gain in weight during proecdysis reflects uptake of water into hemolymph. Total weight includes weight of animal plus old exoskeleton,which newly emerged animal generally eats(After skinner,1996)weightintermoltpremoltecdysispostmoltintermolttotal

  • ::

  • EXTERNAL CUESNEUROSECRETORY TISSUESENDOCRINE TISSUESTARGETTISSUESNEUROTRANSMITTERSEYESTALKMIHY-organMANDIBULARORGANMFMHEpidermis AND OTHER TISSUESCHH--X-organ sinus gland -CHHMIHMolt-inhibiting hormoneMF:Methyl farnesoateMOIHMOIHMandibular organ inhibited hormone+MH: Molting hormone(ecdysone)

  • Methyl farnesoate

  • Methyl farnesoate,MFMandibular organ 1.Y-organ in vitro culture (medium:Medium199 +10%feral bovine serum+antibiotic) 2.culture mediumMF 3.culture medium 4.:MFDos Response (Tamone and chang,1995)

  • Y-organ (a) Ecdysone(E)

    (b)25-deoxyecdysone (25dE)

    (c)3-dehydroecdysone (3DE)(b)abc

  • Ecdysone(E) Ecdysone

  • Conclusions

  • The End