three phases of insect development - :: faperta...
TRANSCRIPT
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Anonimous, 1995. Encyclopedia of Nature. Dorling Kindersley Multimedia. CD ROM.
___________, WY. Encyclopedia of Animals. Volume 7. Insects and Spiders. VCD.
Borror, D.J. & D.M. Delong. 1971. An Introduction to the Study of Insects. Third Edition. Holt, Rinehart, and Winston INC. Printed in the United State of America. 812 pages.
Bryant, P.J., M. Filippova, & P. Havie. WY. Neuroendocrine Control of Insect Development. Developmental Biology Center. University of California. Irvine.CA 92717. USA. On-Line.
Chapman, R.F. 1982. The Insect Structure and Functions. Third Edition. Harvard University Press. Cambridge. Massachusetts. Hong Kong. 919 pages.
Farb. P. 1981. Serangga. Pustaka Alam Life. Authorized Indonesian Language Edition. Tira Pustaka. Jakarta. 192 pages.
Hallick, R.B. 2000. The Effects of Juvenile Hormone and Juvenile Hormone Mimics on Adult Development of Drosophila melanogaster. The University of Arizona. On-Line.
Hallick, R.B. 2000. Vertebrate Development: Clavage. Chapter 40: Animal Development. The University of Arizona. On-Line.
References
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Happ, G.M. Development and Reproduction. Chapter Four. In
H.E. Evans. 1984. Insect Biology. A Textbook of Entomology. Colorado
State University. Addison-Wesley Publishing Company. Massachusetts.
California. London. Amsterdam. Ontario. Sydney. Page 93-113.
Oberlander, H. Hormon Action During Insect Development. Chapter 13. In
M.S. Blum. 1985. Fundamentals of Insect Physiology. A Wiley-Interscience
Publication. John Wiley and Sons. New York. Chichester. Brisbane. Toronto.
Singapore. Page 59-90.
Powell, P.K. 1995. Insect Metamorphosis. Extension Service. West Virginia
University. On-Line.
Riddiford, L.M., T.J.W. 2000. The Origins of Insect Metamorphosis.
Departement of Zoology. University of Washington. Seattle 98195-1800.
USA. On-Line.
Stricherz, V. 1999. Researchers Say Hormones are Key to Evolution of
Insect Metamorphosis. For Intermediate Release. University of
Washington. On-Line.
Yahya, H. 2002. The Fact of Creation. Harunyahya Channel. VCD
References
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1. Apakah perbedaan yang prinsip antara ovovivipar dan
vivipar?
2. Apa yang anda ketahui tentang metamorfosis, ada berapa
macam? Sebutkan!
3. Apakah perbedaan antara hemimetabola dan
paurometabola? Berikan contoh serangganya!
QUIZ berhadiah!
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Types of Insect
Reproduction
Oviparity .
Ovoviviparity
Viviparity .
Fecundity, Fertility
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Morphology of Insect Eggs
Embryo
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Types of Insect
Reproduction Oviparity
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Oviparity
Types of Insect
Reproduction
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Types of Insect
Reproduction Oviparity
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Types of Insect
Reproduction Oviparity
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Types of Insect
Reproduction Viviparity
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Paedogenesis 3. Amphitoky
Types of Insect
Reproduction
Polyembriony
Parthenogenesis 2. Thelytoky
1. Arrhenotoky
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Three Phases of Insect
Development
Embryo
Immature
Adult / Imago
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Three Phases of Insect
Development
Embryo
Immature
Adult / Imago
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Stages in Insect
Embryology ... 1
Egg Fertilized
Cleavage nuclei migrate to egg surface
Blastoderm - a thin cellular layer
Sperm production
Fertilization
Vitellogenesis or yolk formation in egg
Formation of egg chorion or “shell”
Embryo
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Germ band forms
Germ band invaginates into yolk
Three primary tissues develop
Stages in Insect
Embryology ... 2
Embryo
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Embryonic Development
in an Insect
Embryo
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Germ band forms
Germ band invaginates into yolk
Three primary tissues develop
Stages in Insect
Embryology ... 2
Embryo
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Three Primary Tissues
Develop
Mesoderm
Endoderm
Ectoderm
Embryo
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Embryo
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Mesoderm
Inner layer
Muscles, fat bodies,
gonads
Embryo
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Endoderm
Middle layer
Gut or digestive tract
Embryo
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Ectoderm
Outer layer
Fore gut, Hind gut, Wings,
Tracheal lining
Embryo
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An Egg is Hatching
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Embryo
The Reproductive
Processes is Controlled
by Endocrine System
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The Endocrine System
A relatively fast internal communication system
related to nervous system
Chemical messengers or “hormones” in hemolymph
Hormones secreted by cells, often in the brain
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Endocrine Control of:
Reproductive processes, development,
breaking diapause,
Behavior-Migration, mating, egg laying,
Homeostasis-sugar, fat and protein
production and use
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Endocrine Control of:
Reproductive processes, development,
breaking diapause,
Behavior-Migration, mating, egg laying,
Homeostasis-sugar, fat and protein
production and use
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Three Phases of Insect
Development
Embryo
Immature
Adult / Imago
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Three Phases of Insect
Development
Embryo
Immature
Adult / Imago
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Types of Larvae
Immature - Adult
Scarabaeiform
Vermiform
Elateriform
Eruciform
Leg:• Polypod
• Oligopod
• Apodous
Form:• Eruciform
• Flatyform
• Scarabaeiform
• Campodeiform
• Elateriform
• Vermiform
Oligopod
Apodous
Polypod
Campodeiform
Flatyform
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Types of Pupae
Immature - Adult
CoarctateExarate Obtect
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How Insects Grow
METAMORPHOSIS
Immature
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Types of Metamorphosis
Simple Metamorphosis– No Metamorphosis (ametabolous development)
– Incomplete Metamorphosis (hemimetabolous development)
– Gradual Metamorphosis (paurometabolous development)
Complete Metamorphosis– (holometabolous development)
Intermadiate Metamorphosis– (paurometabolous & holometabolous development)
Immature - Adult
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Simple MetamorphosisNo Metamorphosis
Immature - Adult
THYSANURA
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Simple MetamorphosisIncomplete Metamorphosis
Immature - Adult
ODONATA, EMPHEMEROPTERA
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Simple Metamorphosis
Immature - Adult
Gradual Metamorphosis
ORTHOPTERA
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Complete Metamorphosis
Immature - Adult
LEPIDOPTERA
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Intermadiate Metamorphosis
Immature - Adult
HOMOPTERA
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How Insects Grow
METAMORPHOSIS
Molting or “ecdysis”Shedding the old skin or“exuvium”
Immature
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How Insects Grow
METAMORPHOSIS
Molting or “ecdysis”Shedding the old skin or“exuvium”
Immature
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Immature
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1
Stages in Molting
Apolysiscuticle separates from
epidermal layer and molting
gel deposited
Immature
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Immature
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2
Stages in Molting
New epicuticle forms
below molting gel
Immature
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Immature
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PTTH “prothoracicotropic hormone”
stimulates the prothoracic gland to
release molting hormone (ecdysone)
Ecdysone activates
- Apolysis
- New epicuticle and procuticle
deposition
Endocrine Control of Molting
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3
Stages in Molting
Molting gel is activated
and digests old
procuticle
Immature
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Immature
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New soft procuticle
forms under new
epicuticle
Immature
4
Stages in Molting
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Immature
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Ecdysis
”old skin is shed”
Immature
5
Stages in Molting
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Immature
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Immature
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Larvae of Lepidoptera
(Molting Process)
Immature
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Eclosion hormone from brain
stored in corpora cardiaca,
when released, acts on the
ventral nerve cord
Eclosion hormone activates :
- Ecdysis
“Shedding the old skin”
Endocrine Control of Molting
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Expansion
“growth occurs”
New procuticle
Immature
6
Stages in Molting
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Three Phases of Insect
Development
Embryo
Immature
Adult / Imago
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Three Phases of Insect
Development
Embryo
Immature
Adult / Imago
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Hardening and Tanning
Endocuticle deposition
7
Stages in Molting
Immature - Adult
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Cicada (Molting Process)
Immature to Adult
Immature to Adult
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Bursicon, also released from
the brain, stimulates :
– Cuticle expansion
– Hardening and darkening
– Endocuticle deposition
Endocrine Control of
Molting
Immature - Adult
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SUMMARY
1. Apolysis
2. Epicuticle deposition
3. Procuticle deposition
Molting Event
Bursicon
Eclosion Hormone
Ecdysone
PTTH
4. Ecdysis
5. Cuticle Expansion
6. Hardening & Darkening
7. Endocuticle deposition
Hormonal Signal
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