Sustainable aquaculture and aquatic resources management

WORLP Better-Practice Guidelines No. 8 Fry Production - Nursing Spawn

Published: 31/1/2006 | 2364 views
'Spawn' is the name for the young fish about three days old that are available from hatcheries. Sometimes these young fish are also called hatchlings. The spawn of catla, rohu and mrigal is about 6-8 mm long. At this stage, the 'yolk sac' is absorbed, the mouth opened and the fins fully developed. Spawn are reared intensively, first to the 'fry' size and then to the 'fingerling' size. All the three stages are marketed and are collectively called ?fish seed?.

This publication is also available in Oriya

What are Better-Practice Guidelines

Published: 7/3/2006 | 2762 views
STREAM Better-Practice Guidelines are an attempt to share beneficial lessons that are learnt from local practice or from research, with many more people within Asia-Pacific and to enable people, institutions and policy-makers to use new tools and mechanisms which support aquatic resources management in ways that benefit the livelihoods of people who are poor.

This Introduction to Better-Practice Guidelines is also available in Bahasa Indonesia, Bengali, Hindi, Ilonggo, Khmer, Myanmar, Nepali, Oriya, Sinhala, Urdu and Vietnamese

Self-Help Groups, Better-Practice Guideline (Version 1.0)

Published: 7/3/2006 | 2547 views
A way to start working that helps to build up the social connections which people find useful in support of their livelihoods objectives.

This document is also available in Bahasa Indonesia, Bengali, Hindi, Ilonggo, Khmer, Myanmar, Nepali, Oriya, Sinhala, Urdu and Vietnamese

STREAM Better-Practice Guidelines are an attempt to share beneficial lessons that are learnt from local practice or from research, with many more people within Asia-Pacific and to enable people, institutions and policy-makers to use new tools and mechanisms which support aquatic resources management.

Information Access Survey, Better-Practice Guideline (Version 1.0)

Published: 7/3/2006 | 2573 views
The Information Access Survey (IAS) describes how people get the information they need. This tells us how we can best communicate with stakeholders.

This document is also available in Bahasa Indonesia, Bengali, Hindi, Ilonggo, Khmer, Myanmar, Nepali, Oriya, Sinhala, Urdu and Vietnamese

STREAM Better-Practice Guidelines are an attempt to share beneficial lessons that are learnt from local practice or from research, with many more people within Asia-Pacific and to enable people, institutions and policy-makers to use new tools and mechanisms which support aquatic resources management.

Consensus-Building Process, Better-Practice Guideline (Version 1.0)

Published: 7/3/2006 | 2715 views
A way of arriving at a common decision acceptable to almost all of the people involved who have diverse views and opinions on a particular problem or subject.

This document is also available in Bahasa Indonesia, Bengali, Hindi, Ilonggo, Khmer, Myanmar, Nepali, Oriya, Sinhala, Urdu and Vietnamese

STREAM Better-Practice Guidelines are an attempt to share beneficial lessons that are learnt from local practice or from research, with many more people within Asia-Pacific and to enable people, institutions and policy-makers to use new tools and mechanisms which support aquatic resources management.

WORLP Better-Practice Guidelines No. 6 Spawn Production in Hatcheries

Published: 21/2/2006 | 2338 views
Modern hatcheries are made of permanent masonry, concrete or fiberglass.

A modern hatchery has four parts:

?breeding/spawning pool,
?hatching/incubation pool(s),
?spawn collection chamber and
?overhead storage tank or water supply system

This publication is also available in Oriya

WORLP Better-Practice Guideline No. 9 Fast Fingerling Production: Nursing Spawn in Ponds

Published: 17/1/2006 | 2379 views
It takes about 75-90 days to rear fingerlings. Growing spawn to fry takes 15-21 days and then fry to fingerling size a further 1.5 ? 2.5 months. Thus, if spawn is stocked in a nursery on 1 July the fingerlings are usually ready by the end of September.

This publication is also available in Oriya

WORLP Better-Practice Guidelines No. 10 Fingerling Production : Nursing Fry in Ponds

Published: 16/1/2006 | 2394 views
We can think of fish production as a three-stage system: (1) fry rearing, (2) production of fingerlings and (3) on-growing.

Whereas fry are raised in small and shallow ponds, fingerlings need larger-sized (0.08-0.20 ha) and slightly deeper (1.5-2.0 m) ponds. If the ponds are seasonal, only one crop of fingerlings will be possible, whereas at least four crops can be produced in perennial ponds.

WORLP Better-Practice Guidelines No. 11 Fingerling Production: Nursing Spawn and Fry in Pens

Published: 12/1/2006 | 2385 views
In watersheds, medium irrigation projects (MIPs) can be useful for aquaculture even though these water bodies are many times larger than ponds, and are basically built for irrigation or water storage. However, the full potential of these water bodies is not yet realized.

WORLP Better-Practice Guideline No. 12 Advanced Fingerling Production: Seasonal Ponds

Published: 12/1/2006 | 2171 views
It is best to stock advanced fingerlings in large ponds, tanks, and in both small and large reservoirs, since they can better escape predators and competitors. Seasonal ponds, often 0.10-0.15 ha and 1.5-1.8 m deep can be used as rearing ponds for raising advanced fingerlings. Low water levels at the end of the season will make netting and harvesting easy.

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