Transcript Factors Affecting on Sex Reversal of Fishes

Factors Affecting on
Sex Reversal of Fishes
Miss Rattanasuda Chaiyachate
Miss Sirorat Seebancham
Introduction

Hermaphrodite
1. Synchronous hermaphrodite
 Male + female
2. Consecutive hermaphrodite
2.1 protogenous type ….. Female  male
2.2 protandrous type ….. Male  female
Synchronous hermaphrodite
Peppered moray
Hamlet
Twinspot bass
Protogenous
Angelfish
Red grouper
Protandrous
Anemone
Blue ribbon eel
Sex Determination
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
Genetics
 Chromosome  XX-XY , ZW-ZZ, XX-XO
 DNA
Environment
 Social and Behavior
 Temperature
 Hormone manipulation
 Genetic manipulation
 Operation
Social and Behavior

Family Pomacentridae
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Anemene
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Family Serranidae
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Wrasses
Wrasses
Temperature
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Sockeye salmon
Temperature
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Mangrove rivulus
Temperature

Atlantic silverside
Hormone manipulation
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Male hormone
 Methyltestosterone
 Fluoxymesterone
 Androsterone
 17-ethyltestosterone
 Androstenedione
 Dihydroepiandrosterone
 methylandrostenediol
Hormone manipulation
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
Tilapia
Aquarium fishes
Guppy
 Siam fighting fish
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Hormone manipulation
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Female hormone
17-beta Estradiol (EST)
 ethynylestradiol (EE)
 Diethylstilbestrol (DES)
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Hormone manipulation
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Walking catfish
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Climbing perch
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Snake skin gourami
Hormone manipulation
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Sea bass
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Black bream
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Rainbow trout
Hormone manipulation
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Sturgeon
Genetic manipulation

Gynogenisis
Walking catfish
 Sturgeon
 Silver barb
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Androgenesis

Common carp
Genetic manipulation

Selection
X
Tilapia nilotica x T. variabilis  male
Operation

Betta splendens