Internal and external factors controlling reproduction in the African catfish,<i>Clarias gariepinus</i>

Goos, H.J.Th.; Richter, C.J.J.

doi:10.1051/alr:1996041

Cited by 29 publications

(14 citation statements)

References 50 publications

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“…In the present study, physicochemical parameters including water temperature, pH, and dissolved oxygen were within the acceptable range for fish growth and health as recommended by Boyd (1979) and Goos and Richter (1996). This indicates that the growth, survival, fecundity, and gonad development of the experimental fishes were not affected by physicochemical parameters of the culture tanks.…”

Section: Discussionsupporting

confidence: 81%

The effects of Brazilian tea (Stachytarpheta jamaicensis) and Bitter kola (Garcinia kola) seed meal on the growth and gonad development of the African catfish Clarias gariepinus (Burchell, 1822)

Ekanem¹,

Eyo²,

Okon³

2017

EgeJFAS

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Section: Discussionsupporting

confidence: 81%

The effects of Brazilian tea (Stachytarpheta jamaicensis) and Bitter kola (Garcinia kola) seed meal on the growth and gonad development of the African catfish Clarias gariepinus (Burchell, 1822)

Ekanem¹,

Eyo²,

Okon³

2017

EgeJFAS

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“…From many studies, we know that diet has an important role on the reproductive response of aquatic organisms (Goos & Richter 1996; Cavalli et al. 1999; Wouters et al.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of practical diets containing different protein levels on gonad development of female redclaw crayfishCherax quadricarinatus

Rodríguez‐González

Villarreal

García-Ulloa

et al. 2009

Aquaculture Nutrition

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The effect of five experimental diets with different crude protein content (220, 270, 330, 390 and 450 g kg )1 ) on gonad development of female Cherax quadricarinatus was tested under laboratory conditions. After 70 days, a significant linear relationship indicated that higher concentrations of protein and carbohydrates in the hepatopancreas were produced as the dietary crude protein increased (P < 0.05). There were significant responses of the gonadosomatic index, hepatosomatic index, biochemical composition of the gonad (protein, lipids, carbohydrates and energy) and frequency of secondary vitellogenic oocytes to dietary protein level, as indicated by significant fits of the quadratic equation to the observed experimental data. The optimal response of the criteria parameters corresponded to levels of crude protein in the range 284-355 g kg )1 . Overall, 330 g kg )1 crude protein with a protein : energy ratio of 15.6 mg kJ -1 was considered the most adequate concentration of dietary protein for gonad development and biochemical composition in female redclaw crayfish. KEY WORDS

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“…The environmental cue ensures increase in hypophysial gonadotropin secretion through a positive feedback action ofthe gonadal steroids to induce the hypothalamus-pituitary system to reach higher activity levels. Goos and Richter (1996) reported that the gonadotropin surge induces the conversion of 17a OH-progesterone into 17a hydroxy-20-Pdihydroprogesterone which is the final maturation inducing substance in C. gariepinus. In the absence of gonadotropin surge, the event behind the process that lead to oocyte maturation, ovulation or spermiation does not occur (Jalabert, 1976;Goetz, 1983).…”

Section: Reproductive Physiology Of the African Catfish (A) Natural Reproductive Behaviour And Gonadal Maturation Rhythmmentioning

confidence: 99%

A Review Of Reproduction And Gamete Management In The African Catfish <i>Clarias Gariepinus</i> (Burchell)

Olaleye

2005

Ife Journal of Science

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Information on the current status of reproduction and gamete management of the African Catfish, Clarias gariepinus (Burchell) a highly appreciated culturable fish species in Nigeria were reviewed. Natural and artificial reproductive behaviour as well as gonadal maturation rhythm in the highly fecund fish were documented. Various artificial reproductive techniques utilized for induced breeding in captivity and the attendant limitation were highlighted to facilitate understanding of the fish reproductive behaviour. In nature. C. gariepinus has a discontinuous reproductive cycle regulated by cyclically active gonad tropes. A gonadotropin surge trigger off by environmental cues usually facilitates spontaneous oocyte maturation, ovulation or spermiation. Under captive condition, the fish spawn easily with hormonal induction using either homoplastic pituitary gland suspension or synthetic hormonal preparations. The Nigerian clariid farming communities however prefer the use of homoplastic pituitary gland suspensions instead of synthetic hormonal preparations to induce spawning in fish farms because of the very expensive nature of the imported synthetic hormonal preparations.

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Internal and external factors controlling reproduction in the African catfish,Clarias gariepinus

Cited by 29 publications

References 50 publications

The effects of Brazilian tea (Stachytarpheta jamaicensis) and Bitter kola (Garcinia kola) seed meal on the growth and gonad development of the African catfish Clarias gariepinus (Burchell, 1822)

The effects of Brazilian tea (Stachytarpheta jamaicensis) and Bitter kola (Garcinia kola) seed meal on the growth and gonad development of the African catfish Clarias gariepinus (Burchell, 1822)

Evaluation of practical diets containing different protein levels on gonad development of female redclaw crayfishCherax quadricarinatus

A Review Of Reproduction And Gamete Management In The African Catfish <i>Clarias Gariepinus</i> (Burchell)

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