Accelerating pond aquaculture development and resilience beyond COVID: Ensuring food and jobs in Ghana

GIS for land evaluation of watershed aquaculture development in Thainguyen, Vietnam.

10.1079/ac.81395.20203483787 ◽

2020 ◽

Author(s):

Dao Huy Giap

Keyword(s):

Land Use ◽

Environmental Data ◽

Land Evaluation ◽

Geographical Information ◽

Land Area ◽

Soil Thickness ◽

Pond Aquaculture ◽

Strategic Plans ◽

Aquaculture Development ◽

Socio Economic Factors

Abstract This study was conducted in the Daitu district of Thainguyen, Vietnam during November 2001 to January 2003 to identify and estimate potential areas for aquaculture development in a watershed area by integrating socio-economic and environmental data into a geographical information system (GIS) database. Fourteen base layers were used for land evaluation and grouped into four main land use requirements for aquaculture namely: (1) potential for pond construction (slope, land use type, soil thickness and elevation); (2) soil quality (soil type, texture and pH); (3) water availability (distance to water, water sources and precipitation); and (4) geographical and socio-economic factors (population density, distances to roads, local markets and hatcheries). The study demonstrated the usefulness of GIS modelling to select suitable sites for the development of watershed ponds, and the importance of using the data as a tool for planners to develop strategic plans for aquaculture development. The study indicated that about 4.7% (2,725 ha) of the total land area of 57,618 ha in Daitu district was suitable for watershed pond aquaculture, compared to the existing 404 ha of watershed ponds.

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Sustainable aquaculture development in oxbow lakes with emphasis on the involvement of women.

10.1079/ac.62429.20203483182 ◽

2020 ◽

Author(s):

Md. Kibria

Keyword(s):

Fish Farming ◽

Active Participation ◽

Economic Effects ◽

Oxbow Lake ◽

General Idea ◽

Oxbow Lakes ◽

Pond Aquaculture ◽

And Gender ◽

Aquaculture Development ◽

River Bend

Abstract A total of 600 oxbow lakes are located in the southwestern part of Bangladesh, covering 5,488 ha. An oxbow lake (baor) is an old cut-off river bend, usually in the shape of a horseshoe. Pond aquaculture for women was introduced in oxbow lakes in 1995-1996 to allow their active participation in aquaculture as a livelihood activity. The shallow and silted parts of the baor were excavated into 0.5 to 1.5 ha size fishponds. This study was conducted in 1999 in two selected oxbow lakes in Jessore district to assess the technological and socio-economic effects of fish farming groups (FFGs) and pond aquaculture in oxbow lakes with emphasis on the involvement of women. Three categories of questions (socio-economic, technical and gender) were asked of FFG members. This study shows that initially when the women became involved in pond excavation and dike compaction, as members of the FFGs, most of their men members did not like this. As Bangladesh is a Muslim-dominant country, there is a general idea among men that women should not work outside together with men. However, after a few years, once the success of the women's fish farming activities and marketing became clear, their social status and respect in the society and family increased through their active participation in this process. A total of 23 oxbow lakes in five districts around Jessore, covering 1,400 ha, have been handed over from the Ministry of Land to the Department of Fisheries (DOF). Subsequently, the DoF transferred the user-rights to the beneficiaries for a period of 50 years.

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Aquaculture systems in Hanoi, Vietnam.

10.1079/ac.93328.20203483801 ◽

2020 ◽

Author(s):

Thi Dieu Phuong Nguyen

Keyword(s):

Surface Area ◽

Urban Areas ◽

Rice Fields ◽

Lowland Rice ◽

Fish Ponds ◽

Urban Lakes ◽

Pond Aquaculture ◽

The World ◽

The City ◽

Aquaculture Development

Abstract Hanoi, the capital of Vietnam, is one of the most densely populated areas in the world, with about 3,000 people km-2. Traditionally, aquaculture is practiced in ponds, reservoirs and urban lakes, rice fields, wastewater and VAC [an acronym from the Vietnamese words for garden (vuon), pond (ao) and livestock quarters (chuong)] systems. With over 5,000 ha of surface area and 3,000 ha of lowland rice fields, Hanoi has potential for further aquaculture development and tourism-entertainment services. The importance of aquaculture has long been recognized as a source of income and employment. Nowadays, pond aquaculture in peri-urban areas is decreasing due to urbanization, while in areas far from the city it is increasing through the conversion of lowland rice fields to fish ponds.

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Pertumbuhan dan Perkembangan Eksplan Rumput Laut Gracilaria verrucosa dan Gracilaria gigas pada Aklimatisasi di Tambak

ILMU KELAUTAN Indonesian Journal of Marine Sciences ◽

10.14710/ik.ijms.20.3.135-142 ◽

2015 ◽

Vol 20 (3) ◽

pp. 135

Author(s):

Sri Redjeki Hesti Mulyaningrum ◽

Andi Parenrengi ◽

Emma Suryati

Keyword(s):

Pond Water ◽

T Test ◽

Growth Data ◽

Daily Growth ◽

Pond Aquaculture ◽

Randomized Design ◽

Completely Randomized Design ◽

Physical And Chemical ◽

Aquaculture Development ◽

Better Than

Aklimatisasi eksplan rumput laut hasil kultur jaringan merupakan proses adaptasi eksplan dengan lingkungan budidaya. Penelitian ini bertujuan untuk mengevaluasi performa pertumbuhan dan perkembangan eksplan rumput laut G. verrucosa dan G. gigas yang diaklimatisasi di tambak dan mendapatkan informasi awal mengenai prospek pengembangan budidaya rumput laut G. gigas di tambak. Eksplan rumput laut G. verrucosa dan G. gigas hasil kultur jaringan dipelihara dalam hapa berukuran 50x50x50 cm dengan berat awal 15 g.hapa-1 dan dipelihara di tambak. Desain penelitian adalah rancangan acak lengkap (RAL) dengan enam unit penelitian terdiri dari tiga ulangan untuk masing-masing spesies. Pemeliharaan eksplan dilakukan selama 60 hari dan setiap 15 hari dilakukan pengukuran bobot, panjang dan perkembangan eksplan serta monitoring terhadap kualitas air. Pengamatan histologi sel rumput laut G. verrucosa dan G. gigas dilakukan dibawah mikroskop. Analisis data pertumbuhan dilakukan dengan uji komparatif independent t-test sedangkan data perkembangan eksplan dan histologi sel rumput laut dianalisis secara deskritif. Pada pemeliharaan di tambak kedua jenis rumput laut memiliki pertumbuhan yang berbeda nyata (P<0,05). Rumput laut G. verrucosa memiliki bobot mutlak lebih tinggi (221,82 g) dari G. gigas (51,94 g) dan LPH (laju pertumbuhan harian) bobot lebih tinggi (3,27%) dari G. gigas (2%). Rumput laut G. verrucosa juga memiliki pertambahan panjang yang lebih tinggi (5,28 cm) dari G. gigas (2,71 cm) dengan LPH panjang masing-masing sebesar 3,06% dan 2,18%. Perkembangan eksplan rumput laut G. verrucosa lebih cepat daripada G. gigas karena faktor fisika dan kimia lingkungan perairan tambak yang tidak sesuai untuk pertumbuhan rumput laut G. gigas yang memiliki susunan sel korteks lebih rapat. Kata kunci: pertumbuhan, perkembangan, G. verrucosa, G. gigas, eksplan, tambak Acclimatization of tissue culture seaweed explants was an adaptation procces of explants to cultivation environment. This study aims to evaluate the growth and development of G. verrucosa dan G. gigas explants on pond acclimatization as early information of pond aquaculture development of G. gigas. Explants of G. verrucosa and G. gigas were rearing on 50x50x50 cm cage net with 15 g.cage-1 of initial weight and cutured on pond. The study was a completely randomized design with six unit experiment including three replicates for each species. Acclimation was done in 60 days then explants weight, length, development, and water quality were monitored every 15 days. G. verrucosa and G. gigas cell histology was observed under microscope. Growth data was analyzed comparatively using independent t-test then explants development and cell histology were represented descriptively. The study showed that the growth of both species was significantly different (P<0.05) on pond cultivation. G. verrucosa had higher weight (221.82 g) than G. gigas (51.94 g) also higher DGR (daily growth rate) (3.27%) than G. gigas (2%). G. verrucosa also had higher elongation (5.28 cm) than G. gigas (2.71 cm) with length DGR of 3.06% and 2.18%, respectively. The development of G. verrucosa explants was better than G. gigas, because of the physical and chemical environment of pond water was not suitable for G. gigas which had dense cortical structure. Keywords: growth, development, G. verrucosa, G. gigas, explants, pond

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