scholarly journals Genetic diversity of the North African catfish, Clarias gariepinus (Burchell, 1822) hatchery stocks in Thailand

ScienceAsia ◽  
2019 ◽  
Vol 45 (4) ◽  
pp. 301 ◽  
Author(s):  
Anyalak Wachirachaikarn ◽  
Uthairat Na-Nakorn
Keyword(s):  
Genetic Diversity ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
North African ◽  
The North

scholarly journals An Investigation of ZZ/ZW and XX/XY Sex Determination Systems in North African Catfish (Clarias gariepinus, Burchell, 1822)

2021 ◽  
Vol 11 ◽  
Author(s):  
Dung Ho My Nguyen ◽  
Thitipong Panthum ◽  
Jatupong Ponjarat ◽  
Nararat Laopichienpong ◽  
Ekaphan Kraichak ◽  
...  
Keyword(s):  
Sex Determination ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Nucleotide Polymorphisms ◽  
North African ◽  
The North ◽  
Determination System ◽  
Commercial Breeding ◽  
Sex Determination System ◽  
Sex Determination Mechanisms

An investigation of sex-specific loci may provide important insights into fish sex determination strategies. This may be useful for biotechnological purposes, for example, to produce all-male or all-female fish for commercial breeding. The North African catfish species, Clarias gariepinus, has been widely adopted for aquaculture because its superior growth and disease resistance render the species suitable for hybridization with other catfish to improve the productivity and quality of fish meat. This species has either a ZZ/ZW or XX/XY sex determination system. Here, we investigate and characterize these systems using high-throughput genome complexity reduction sequencing as Diversity Arrays Technology. This approach was effective in identifying moderately sex-linked loci with both single-nucleotide polymorphisms (SNPs) and restriction fragment presence/absence (PA) markers in 30 perfectly sexed individuals of C. gariepinus. However, SNPs based markers were not found in this study. In total, 41 loci met the criteria for being moderately male-linked (with male vs. female ratios 80:20 and 70:30), while 25 loci were found to be moderately linked to female sex. No strictly male- or female-linked loci were detected. Seven moderately male-linked loci were partially homologous to some classes of transposable elements and three moderately male-linked loci were partially homologous to functional genes. Our data showed that the male heterogametic XX/XY sex determination system should co-exist with the ZZ/ZW system in C. gariepinus. Our finding of the co-existence of XX/XY and ZZ/ZW systems can be applied to benefit commercial breeding of this species in Thailand. This approach using moderately sex-linked loci provides a solid baseline for revealing sex determination mechanisms and identify potential sex determination regions in catfish, allowing further investigation of genetic improvements in breeding programs.

scholarly journals Genetic diversity and population structure of the African catfish, Clarias gariepinus (Burchell, 1822) in Kenya: implication for conservation and aquaculture – Corrigendum

2017 ◽  
Vol 147 (2) ◽  
Author(s):  
James E. Barasa ◽  
Sinebongo Mdyogolo ◽  
Romulus Abila ◽  
Johannes Paul Grobler ◽  
Robert A. Skilton ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Clarias Gariepinus ◽  
African Catfish

This Corrigendum does not have an abstract.

Genetic parameters of reproductive traits in male and female North African catfish, Clarias gariepinus (Burchell, 1822)

Aquaculture ◽  
2019 ◽  
Vol 513 ◽  
pp. 734431 ◽  
Author(s):  
Witsanu Srimai ◽  
Skorn Koonawootrittriron ◽  
Wiroon Manee-aphai ◽  
Prapaiphan Chaivichoo ◽  
Anake Phu-onnim ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Clarias Gariepinus ◽  
Reproductive Traits ◽  
African Catfish ◽  
North African ◽  
Male And Female

Genetic parameters and genotype-environment interaction for growth traits of North African catfish, Clarias gariepinus (Burchell, 1822)

Aquaculture ◽  
2019 ◽  
Vol 501 ◽  
pp. 104-110 ◽  
Author(s):  
Witsanu Srimai ◽  
Skorn Koonawootrittriron ◽  
Wiroon Manee-aphai ◽  
Satid Chatchaiphan ◽  
Urai Koolboon ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Growth Traits ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Environment Interaction ◽  
North African ◽  
Genotype Environment Interaction

Genetic components of growth traits of the hybrid between ♂North African catfish (Clarias gariepinus Burchell, 1822) and ♀bighead catfish (C. macrocephalus Günther, 1864)

Aquaculture ◽  
2020 ◽  
Vol 521 ◽  
pp. 735082
Author(s):  
Prapaiphan Chaivichoo ◽  
Skorn Koonawootrittriron ◽  
Satid Chatchaiphan ◽  
Witsanu Srimai ◽  
Uthairat Na-Nakorn
Keyword(s):  
Growth Traits ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
North African ◽  
Genetic Components

scholarly journals Female maturation and rematuration acceleration of Mutiara strain catfish (Clarias gariepinus) using combination of oocyte developer hormone and astaxanthin addition diet

2019 ◽  
Vol 18 (1) ◽  
pp. 23-32
Author(s):  
Fatahillah Maulana Jufri ◽  
Agus Oman Sudrajat ◽  
Mia Setiawati
Keyword(s):  
Clarias Gariepinus ◽  
Reproductive Organs ◽  
African Catfish ◽  
North African ◽  
Environmental Signals ◽  
Gonadal Maturation ◽  
Gonadal Maturity ◽  
Research Designs ◽  
Broodstock Diet ◽  
Female Maturation

ABSTRACT Reproductive design for gonadal maturation process mostly related with some factors such as environmental signals, reproductive organs, hormonal and nutrition. This research was conducted on female Mutiara strain of North African Catfish, Clarias gariepinus by combining two kinds of materials administered to broodstock diet, namely oocyte developer (Oodev) which contains of PMSG hormone and antidopamin, and astaxanthin carotenoid. Research designs were divided into C (Control), A50 (astaxanthin 50 mg/kg feed), A100 (astaxanthin 100 mg/kg feed), Od0.5 (Oodev 0.5 mL/kg fish for two weeks), Od1 (1 mL/kg fish for 2 weeks), Od0.5A50 (combined Od0.5 with A50), Od1A50 (combined Od1 with A50), Od0.5A100 (combined Od0.5 with A100), and Od1A100 (combined Od1 with A100). This research was performed during twelve weeks of feeding. The Od1A100 treatment showed the best reproduction performance result compared to other treatment with highest hepatosomatic (HSI) and gonadosomatic (HSI) indexes (P<0.05), also fastest increase in egg diameters (P<0.05), shorter rematuration periods and highest proportion of mature broodstock. These results indicated that Oodev and astaxanthin could accelerate gonadal maturity in female broodstock of Mutiara catfish.Keywords: Broodstock, hormonal, reproduction, oocyte developer, astaxanthin  ABSTRAK Rekayasa reproduksi untuk proses pematangan gonad sebagian besar terkait dengan beberapa faktor seperti sinyal lingkungan, organ reproduksi, hormonal dan nutrisi. Penelitian ini dilakukan terhadap strain ikan lele Mutiara (Clarias gariepinus) betina menggunakan dua bahan yang dicampur pada pakan induk, yaitu oocyte developer (Oodev) yang mengandung hormon PMSG dan antidopamin, dan karotenoid astaxanthin. Eksperimen yang dirancang adalah K (Kontrol), A50 (Astaxanthin 50 mg/kg pakan), A100 (Astaxanthin 100 mg/kg pakan), Od0.5 (Oodev 0,5 mL/kg induk untuk 2 minggu), Od1 (Oodev 1 mL/kg induk untuk 2 minggu), Od0.5A50 (kombinasi Od0.5 dan A50), Od1A50 (kombinasi Od1 dan A50), Od0.5A100 (kombinasi Od0.5 dan A100), dan Od1A100 (kombinasi Od1 dan A100). Penelitian ini dilakukan dengan memberi makan dua belas minggu. Performa reproduksi terbaik didapat pada perlakuan Od1A100. Od1A100 memiliki indeks hepatosomatik (HSI) dan gonadosomatik (HSI) tertinggi (P <0,05), juga diameter telur paling cepat besar (p <0,05), periode rematurasi terpendek, dan proporsi induk matang gonad tertinggi. Hasil ini menunjukkan bahwa Oodev dan astaxanthin dapat mempercepat kematangan gonad pada induk betina ikah lele Mutiara. Keyword: Induk, hormon, reproduksi, oocyte developer, astaxanthin 

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