Web & Social Media Analytics Previous Year Question Paper.pdf
Importance of Fish for Nutrition and Fisheries in Bangladesh
1. COUNTRY OVERVIEW ON THE IMPORTANCE OF FISH
FOR NUTRITION AND THE CURRENT ACTIVITIES IN
FISHERIES AND AQUACULTURE
Mrityunjoy Kunda, Sarah Castine and Shakuntala Thilsted
kunda.sau@gmail.com
2. Water resources
• 0.77 million ha inland closed
• 3.93 million ha inland open
• 2.61 million ha marine
Fisheries Biodiversity
• 293 inland fish species
• 25 freshwater prawn species
• 475 marine fish species
• 37 marine shrimp species
• 25 exotic fish species
Contribution to economy
• Export earning 2.76%
• GDP 4.39%
• Agril. GDP 22.76%
3. Fish production status
Total fish production 3.262 million Mt.
Sector-wise contribution of fish to total
production in 2011-12
Sector-wise contribution of fish to total
production in 1983-84
4. Fish production status
Annual average increment for last 10 years 5.61%
Fish production status of Bangladesh over last 12 years
5. Fish consumption status
60% animal protein comes from fish
Yearly average fish intake per person 18.94 kg
Yearly requirement of fish per person 21.9 kg
7. Mola initiatives
Research started from BAU at 1991
DOF also initiated dissemination program on SIS at the same time
Afterward BFRI and other Universities have taken initiative for research
WorldFish started working on SIS during 2011 on pond aquaculture
and enhancement in floodplain.
What is now
People in many parts of the country accepted Carp-SIS polyculture technology
DoF has taken initiative for dissemination
WorldFish trying to promote small fish in pond aquaculture and floodplain in
different part of the country
BFRF, different universities also working on SIS
8. Mostafa Hossain-BAU
habitat – where one can catch mola-dhela-darkinahabitat – where one can catch mola-dhela-darkina
and other small fishand other small fish
almost all freshwater bodiesalmost all freshwater bodies
ditches, khalditches, khal
ponds and beelsponds and beels
haors and baorshaors and baors
lakeslakes
rice fields and otherrice fields and other
inundated crop fieldsinundated crop fields
rivers and streamsrivers and streams
even available in the estuarieseven available in the estuaries
10. Introduction of SIS in pond polyculture
Average aquaculture production 2.23 mt/ha
Pond aquaculture production 3.62 mt/ha
Average contribution of SIS in pond aquaculture 10-15%
Do not hamper carp production
11.
12. Introduction of SIS into floodplain
Initiated by WorldFish during 2011-12.
Stocked small qty. of mola during dry season in ditches and enforce regulation
on harvesting during breeding season.
- According to baseline survey there were no mola
- After 1st
intervention mola catch was 5% of the total production
- After 2nd
year intervention mola catch was 15% to the total production
13. Chalan Beel - the largest
watershed
Haor area – Sylhet
Mymensingh floodplain
Baor area – oxbow lake,
dead river
Kaptai Lake – the largest man-
made lake
Sundarbans – the largest
contiguous mangrove forest
of the world
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24. Pond technology is
being disseminated
in 7 districts
through 3 different
interventions
(projects)
25. 3 interventions, 3 different ways of
engaging with communities
Intervention 1
•2 year engagement
•All farmers get mola
•DoF involved
•Lead farmers selected
and trained to conduct
further training with
village farmers once
every 15 days for 17
sessions
Intervention 2
•1 year engagement
•All farmers get mola
•NGO involvement
•Demo farmers selected
and receive inputs
•During stocking or
harvesting, other
farmers are invited onto
the demo farmers plot
Intervention 3
•1 year engagement
•All farmers get mola
•NGO involvement
•Demo farmers selected
and receive inputs
•Demo farmers
encouraged to share
with other farmers
•Project staff hold
training on demo farm
26. The yield gap presents opportunity…….
*Figures have been standardized to tons per hectare per year
Small fish include: mola, punti, chela, delaha
27. The yield gap presents opportunity…….
*Figures have been standardized to tons per hectare per year
Small fish include: mola, punti, chela, delaha
28.
29. Adding small fish has big implications
for micronutrient production
Species Productiona
Protein (kg) Iron (g) Vitamin A (mg RAE)
Catla 460 68 4 101
Common carp 217 36 2 120
Silver carp 1 289 221 57 0
Mola 496 73 94 11 036
Total – intervention 3 062 500 166 11 412
Total – control 1 158 195 29 833
a
Production is adjusted using the ‘edible proportion coefficient; kg (of edible parts) per ha per season
31. Mola ranked 6th in production
volume
Species Productiona
Protein (kg) Iron (g) Vitamin A (mg RAE)
River prawn (Macrobrachium
lamarrei) 62 9.7 7.8 1.9
Meni (Nandus nandus)
40 6.6 0.3 23.8
Jat Puti (Puntius sophore)
50 7.8 1.1 27.6
Tengra (Mystus tengara)
42 6.3 1.7 5.0
Chanda spp.
32
Mola (Amblypharyngodon mola)
22 3.9 1.3 600.8
a
Production is adjusted using the ‘edible proportion coefficient; kg (of edible parts) per ha per season
Hello, I’m Sarah, based at Worldfish Penang
Over the last year I’ve been working with the different teams from WorldFish Bangladesh who have been testing and disseminating technologies to produce small fish in either wetlands or in ponds.
My work comprised both a review of the literature and an analysis of some of the over arching trends emerging from the datasets produced by these teams
Today I will focus mainly on the data resulting from the work in ponds and touch on wetland systems for my last slides
Regarding the pond technology the three teams in Bangladesh have been working under the bilaterals IFAD, FtF and CSISA
These are represented by the three interventions shown here in different colours
These teams have been working in 7 districts across Bangladesh;
Dinajpur, Rangpur, Mymensingh, Faridpur, Jessor, Khulna and Barisal
Collectively they’ve reached over 8000 (IFAD = 1590 + AIN = 4615, CSISA = 2325) households
Each intervention used slightly different techniques to engage with communities
Each intervention ran for multiple years but they differed in the length of time that they engaged with any one household.
In intervention 1 farmers were engaged for two years and in the other two interventions farmers were engaged for one year
All farmers in all interventions received mola broodstock
And demo farmers in intervention 2 and 3 also received additional inputs and training
In intervention one lead farmers were selected and they were trained with the skills necessary to them train other farmers
And likewise the demo farmers in intervention 2 and 3 were tasked with sharing their skills and knowledge with surrounding farmers,
Especially during critical stages of the production cycle such as stocking and harvesting
Int. 1 = IFAD
Int. 2 = AIN
Int. 3 = CSISA
The mean yields achieved under each interventions are presented in this table with the ranges presented in the brackets.
The units are in tons per ha per season.
The mean productivity of all of these ponds are similar and confirm Mrityunjoy’s statement earlier, small fish comprise between 10-15% of total production
Looking now at the numbers inside the brackets - the huge range between the lowest yielding and highest yielding ponds is notable.
For example, under intervention 1 the lowest yielding ponds were producing only 300 kg per ha per season whereas the highest yielding ponds were producing 4 t per ha per season.
These differences are also reflected in the literature with quite a large range found even under the reasonably controlled conditions of experimental plots or intensively managed or supported farmers plots.
These differences could be driven by a number of factors including differences in management practices, differences in the size and condition of the pond, differences in the connectivity of the pond to surrounding canals, water bodies or rice fields or even differences in the training or way that extension or project staff engage with farmers in different villages and under different interventions
These factors are being explored in more detail by some of the individual teams under each intervention but the take home message here is that there really is a lot of opportunity to bring some of the poorer performing households up to speed in terms of the productivity of their ponds,
To do this we really need to elucidate the factors driving these differences in productivity and work with farmers to find ways to overcome some of the barriers currently hindering productivity, whether they are social, economic or technical barriers.
We can also dive a bit deeper into these production figures and look at the seasonality of production
Both the production of large fish and small fish tend smooth the seasonal trends which are seen in production of wetlands.
However, there are slight seasonal trends, especially for large fish
Households are able to start harvesting mola about a month after stocking and their productivity remains relatively stable throughout the year,
Producing around 10 kg per ha per month
Whereas large fish can first be harvested after about 5 months and their
productivity climbs steadily over the course of a production cycle and not surprisingly peaks early in the new year when most of the harvesting takes place.
This steady supply of small amounts of mola could potentially make a valuable contribution to household nutrition provided those that need them most are consuming them regularly.
We’re also looking at ways to link this production data potential contribution to household nutrition.
This table shows a selection, just 4 species out of the possible 9-10 species cultured in carp-small fish polyculture ponds and their respective micronutrient contributions.
Production here is in kg of edible parts per ha per season
Different species have different micronutrient profiles so some species are more ‘valuable’ nutritionally, than others.
For example for similar quantities of the large fish catla, mola offers over 100 x the vitamin A content, 23 x the iron content
There are even differences within the large fish species. For example, over 1000 kg of silver carp doesn’t provide any vitamin A whereas just 200 kg of common carp offers 120 mg of vitamin A
On these last two rows I’ve totaled up the production figures from the intervention or trained farmers verses those farmers who did not receive any training or mola broodstock.
These numbers tell a clear story – overall production is higher, protein and iron are higher and the production of vitamin A is 14 times that of the control farmers.
RAE = retinol activity equivalents
Ok so that’s the overall picture when producing small fish in ponds but what is the effect of producing small fish in wetlands?
Again here’s our map of Bangladesh
All of these smaller dots represent interventions or projects under which community based fisheries management has been established
As part of these some of these CBFM projects, mola fisheries have been enhanced through a once off stocking of about 100 g mola per ha
The areas where this is occurring are represented by the larger circles.
And I will present some data from the Sunamganj region
Rajsahaha – raj-sha-hee
This table shows the top 6 species by volume which were caught from the water body Soma Nodi, in the Sunamganj area in 2013
As a side note I want to draw your attention to the fact that these are the top 6 species out of 66 species that were caught that year in this water body in 2013. Now compare this to a possible 9-10 species that are grown in aquaculture ponds and consider the biodiversity in micronutrients that this contributes towards household nutrition!
In this water body mola were stocked in 2012
And subsequently ranked 6th in terms of production quantity in 2013.
I’ve also looked at production data from approximately 60 other water bodies from the wider Sunamganj area between 2008 and 2013
And the only other time that mola featured in the top ranking species was in 2010 when it came in at number 11
Mola has only been stocked in Soma Nodi.
In 2013 in Soma Nodi mola contributed 21 x more vitamin A than punti, which was the “runner up” species in terms of vitamin A contribution
By conducting a one off stocking of between 100-200 g per ha mola appear to thrive in community managed fisheries systems and have the potential to significantly contribute towards household nutrition
But some questions still remain that we need to address…
One of them being, what do we need to do to take this to scale?
What sort of barriers do we need to overcome to ensure this goes to scale, are these market barriers? Social barriers? Technical barriers –
More advanced systems to transport mola?
Are there any ecological impacts of stocking mola into wetland fisheries? Are mola populations sustained after stocking or do they decline again?
In some water bodies mola flourish but what are the ecological drivers of this?
And what do we still need to understand better? Who is actually eating the fish coming out of these systems and how much do they eat?
Do the most undernourished people actually eat these highly nutritious fish?