An update on induced breeding methods in fish aquaculture and scope for new potential techniques

Chaube, Radha

doi:10.1016/b978-0-323-91240-2.00006-3

Cited by 3 publications

(4 citation statements)

References 76 publications

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“…However, minimal or absent regulatory frameworks to control indiscriminate breeding and require confinement pose significant threats to wild populations and can compromise one of the crucial aspects of the breeding objectives, which is to preserve the genetic resources within the species/breed (Farstad, 2018). Farmed tilapias and catfishes are produced in sub-Saharan Africa by very different methods in terms of the techniques involved, hatchery facilities required and levels of investment required (Chaube, 2023). If these processes are unregulated or unsupervised, fish breeders who lack basic genetic knowledge are at risk of making poor breeding decisions that may harm their production stock, as well as native populations and species if the cultured fish escape to the wild.…”

Section: Fish Breedingmentioning

confidence: 99%

The potential impact of aquaculture on the genetic diversity and conservation of wild fish in sub‐Saharan Africa

Sanda,

Metcalfe,

Mable

2024

Aquatic Conservation

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An increasing focus on aquaculture using introduced strains or species poses a serious threat to native wild species in sub‐Saharan Africa, yet almost no policies have been enacted or regulations put in place to address this environmental challenge. Aquaculture in these regions has traditionally been conducted on a relatively small scale but is currently expanding rapidly and is projected to continue increasing in the coming decades, with increasing use of genetically improved strains. This expansion is occurring in a region known for its high biodiversity, creating challenges for increasing fish production without damaging wild fish populations. However, few studies have yet assessed the impacts of changes in aquaculture practice on the genetic composition and diversity of wild populations. The use of non‐native improved strains for aquaculture could cause competition, gene introgression when there is interbreeding with native populations or species, displacement of species and possible extinction of the native wild populations. After providing historical context on African aquaculture, this review describes the current methods of fish breeding and genetic improvement programmes for the main species of cultured fishes, focusing on the potential conservation impacts of the use of introduced (and selectively bred) farmed species. Existing aquaculture policies, legislation and regulations regarding the import and farming of fish are then compared across the main fish‐producing countries. We recommend a regional policy framework considering fish introduction, risk analysis and risk management, human resources development and genetic monitoring that could be drafted into the existing policies to strengthen conservation efforts. We conclude by making recommendations for refining existing regulations and for future research aimed at minimizing the impacts of aquaculture on wild fish populations in sub‐Saharan Africa. Aquaculture in this region needs implementation of responsible guidelines to avoid genetic impacts on native populations of high conservation value.

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Section: Fish Breedingmentioning

confidence: 99%

The potential impact of aquaculture on the genetic diversity and conservation of wild fish in sub‐Saharan Africa

Sanda,

Metcalfe,

Mable

2024

Aquatic Conservation

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“…Teknik hipofisis (pembiakan yang diinduksi melalui kelenjar pituitari) dipraktikkan di seluruh negeri guna merangsang pemijahan ikan dalam proses budidaya (Alam et al, 2022;Chaube, 2023;Khan et al, 2023). Tujuan dari pelatihan ini adalah untuk mensosialisasikan bagaimana cara membudidayakan ikan lele dengan penerapan teknik pemijahan Hipofisasi dan hormon ovaprim untuk menghasilkan bibit ikan lele berkualitas yang akan disebarkan ke dalam kolam pemeliharaan.…”

Section: Pelatihan Pemijahan Teknik Hipofisasiunclassified

Pelatihan Peningkatan Kompetensi Siswa SMKN 1 Watulimo Prigi Dalam Mendukung Lomba Keterampilan Siswa (LKS) 2022

Andriawan,

Prasetyo,

Putra

2024

J-SOLID

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Lomba Keterampilan Siswa (LKS) tidak hanya menuntut keterampilan praktik, tetapi juga memerlukan pemahaman yang kuat tentang teori yang mendasarinya. Penelitian ini mengungkap permasalahan kurangnya keterampilan praktik dan teori di kalangan siswa SMKN 1 Watulimo dalam persiapan untuk LKS yang meliputi teknik hipofisa, enkapsulasi artemia dan penelitian sederhana. Melalui metode penelitian observasi partisipan, wawancara, dan survei, hasil menunjukkan sebagian besar siswa mengalami kesulitan dalam menghubungkan teori dengan praktik, serta keterbatasan fasilitas dan bahan ajar yang relevan. Dengan melibatkan siswa dalam workshop interaktif, pelatihan langsung di lapangan (laboratorium Perikanan, Universitas Muhammadiyah Malang), dan penugasan proyek, pengetahuan dan keterampilan siswa berhasil ditingkatkan. Pengadaan fasilitas dan bahan ajar yang lebih baik juga memberikan kesempatan bagi siswa untuk lebih berlatih. Hasilnya, siswa medapatkan pengalaman nyata dalam mempersiapkan LKS secara terstruktur sehingga tingkat pengetahuan siswa secara teori dan praktik meningkat serta terjadi peningkatan partisipasi dan kinerja siswa dalam kompetisi LKS. Temuan ini menekankan pentingnya pendekatan holistik dalam pendidikan keterampilan, yang mengintegrasikan teori dan praktek secara efektif. Implikasinya adalah perlunya pengembangan kurikulum yang memperkuat integrasi antara teori dan praktik, serta alokasi sumber daya yang memadai untuk mendukung pembelajaran siswa dalam persiapan menghadapi kompetisi LKS.

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“…This is primarily attributed to the absence of environmental cues necessary for initiating the reproductive process in breeding conditions. In this context, natural or synthetic hormones are commonly used to overcome this issue and produce high-quality gametes [2].…”

Section: Introductionmentioning

confidence: 99%

“…According to Lange et al [3], natural and synthetic steroids have differing effects on ovarian tissue, growth, and maturation. Synthetic steroids tend to have greater efficacy due to their resistance to degradation during digestion, which slows down their excretion compared to natural hormones [2,4].…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Effects of Fennel (Foeniculum vulgare) Seed Essential Oil as a Diet Supplement on the Biochemical Parameters and Reproductive Function in Female Common Carps (Cyprinus carpio)

Ahmadniaye Motlagh,

Horie,

Rashid

et al. 2023

Water

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The present study aimed to investigate the effect of Foeniculum vulgare essential oil on the health of the common carp (Cyprinus carpio). A total of 120 healthy fish were provided with feed containing 200, 400, and 600 mg/kg of F. vulgare oil for 60 days. Findings revealed that the oral administration of 200 mg/kg of F. vulgare oil significantly increased final weight, weight gain, and specific growth rate compared to the control group (p < 0.05). Plasma biochemical enzyme levels remained unchanged in 200 and 400 mg/kg treatments, whereas they were found to be significantly increased in treatments with 600 mg/kg. Although no significant alterations in glucose, triglyceride, and cholesterol levels were observed, the treated groups exhibited significant increases in total protein, albumin, globulin, and creatinine levels. Results also indicated significantly decreasing levels of glutathione peroxidase, whereas superoxide dismutase activity increased. The gonadosomatic index showed notable improvement in the 200 and 400 mg/kg groups. Furthermore, plasma concentrations of estradiol and testosterone were significantly affected by doses of 400 and 200 mg/kg. Findings suggest that, following the administration of F. vulgare extract, the reproductive and general health of the fish appears to be improved. Nevertheless, it is recommended to supplement fish diets with up to 200 mg/kg of F. vulgare extract to improve their reproductive and general health. Concentrations above this limit can potentially cause harm.

show abstract

An update on induced breeding methods in fish aquaculture and scope for new potential techniques

Cited by 3 publications

References 76 publications

The potential impact of aquaculture on the genetic diversity and conservation of wild fish in sub‐Saharan Africa

The potential impact of aquaculture on the genetic diversity and conservation of wild fish in sub‐Saharan Africa

Pelatihan Peningkatan Kompetensi Siswa SMKN 1 Watulimo Prigi Dalam Mendukung Lomba Keterampilan Siswa (LKS) 2022

Unveiling the Effects of Fennel (Foeniculum vulgare) Seed Essential Oil as a Diet Supplement on the Biochemical Parameters and Reproductive Function in Female Common Carps (Cyprinus carpio)

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