Fish reproduction razia 2

[object Object],[object Object],[object Object],[object Object],Reproduction, Early Life Stages, Growth (Chapter 6 and additional material)

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reproduction, Early Life Stages, Growth

Reproduction – general environmental regulation Reproduction, Early Life Stages, Growth brain gonad Fish pituitary steroid hormones Environment seasonal photoperiod profile seasonal temperature profile food availability contaminants other liver LH FSH • androgens • estrogens Vg gonadal development • progestins

Reproduction – hormones that control release of gametes Reproduction, Early Life Stages, Growth Brain Pit Gonad dopamine - LHRH + LH Gametes

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reproduction, Early Life Stages, Growth

Reproduction – captive natural spawning Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],spawning containers fish in spawning containers

Reproduction – captive induced spawning Reproduction, Early Life Stages, Growth MIH MIH R.W. Rottmann et al. 1991 LHRH = GnRH

Reproduction – captive induced spawning Reproduction, Early Life Stages, Growth R.W. Rottmann et al. 1991 MIH hCG = human chorionic gonadotropin

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reproduction, Early Life Stages, Growth

Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Embryo-larva transition

Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Inflexion point

Reproduction, Early Life Stages, Growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],Reproduction, Early Life Stages, Growth

Fish reproduction razia 2

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