LIFE LIFE LIFE LIFE CYCLE OF CYCLE OF CYCLE OF CYCLE OF BOMBYX MORI BOMBYX MORI BOMBYX MORI BOMBYX MORI

AND AND AND AND

MORPHOLOGY MORPHOLOGY MORPHOLOGY MORPHOLOGY MORPHOLOGY MORPHOLOGY MORPHOLOGY MORPHOLOGY

OF OF OF OF OF OF OF OF

EGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULT

Dr. Mahesha H BAssociate Professor

Department of SericultureYuvaraja’s College,

University of Mysore, Mysore, India

12 September 2013 1

LIFE CYCLE OF BOMBYX MORI

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LIFE CYCLE OF BOMBYX MORI

SEASONS OF TEMPERATE ZONESEASONS OF TEMPERATE ZONESEASONS OF TEMPERATE ZONESEASONS OF TEMPERATE ZONE

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MV: EggMV: Egg--99--1212LarvaLarva-- 2020--2424PupaPupa-- 1010--1212MothMoth-- 33--6 6

BV: EggBV: Egg--1111--1414LarvaLarva-- 2424--2828PupaPupa-- 1212--1515MothMoth-- 66--10 10

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UniUni -- 1 gen/yr1 gen/yrBi Bi –– 2 gen/yr2 gen/yrMvMv –– 66--8 gen/yr8 gen/yr

Larval StageLarval StageMoultingMoultingMature WormMature WormSpinning of the cocoonSpinning of the cocoon

Morphology Morphology of of

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of of EGG, LARVA, PUPA & ADULTEGG, LARVA, PUPA & ADULT

11--1.3 mm1.3 mm0.550.55--0.6mg0.6mgOvaoidOvaoid//

0.90.9--1.2 mm1.2 mm

One Laying

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OvaoidOvaoid//SphericalSphericalFlat at ventral sideFlat at ventral sideMicropyleMicropyleRespiratory channelsRespiratory channels

3mm3mm

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10cm10cm

AbdomenAbdomenElevenEleven

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Thorax Thorax Three Three

Head Head Six Six

HeadHeadHypognathous Hypognathous

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Coloured scanning electron micrograph (SEM)of the head of a silkworm moth caterpillar(Bombyx mori).

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ThoraxThorax

Silkworm pro leg

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Abdomen

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Sexual Marking at larval stageSexual Marking at larval stage

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PUPA

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Sexual Marking at Sexual Marking at PupalPupal stagestage

MothMoth

Female and Male mothsFemale and Male mothsPaired Female Paired Female and Male mothsand Male moths

Female and Male mothsFemale and Male moths

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Female Female mothmoth Egg laying Female mothsEgg laying Female moths

Sexing at Moth stageSexing at Moth stage

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Acknowledgements

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PICTURES and PHOTOGRAPHS

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