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Author SK Wagle |
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Refine your searchChanges In Zooplanktons Community And Density With Reference To Nutrients In A Subtropical Lake Begnas, Pokhara Valley / MA. Husen ; RP Dhakal ; SK Wagle ; JD Bista
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Title : Changes In Zooplanktons Community And Density With Reference To Nutrients In A Subtropical Lake Begnas, Pokhara Valley Material Type: printed text Authors: MA. Husen, Author ; RP Dhakal, Author ; SK Wagle, Author ; JD Bista, Author Pagination: 54-58 p. Languages : English (eng) Abstract: Several species of zooplankton are used as indicators to identify different physico-chemical advection ?r
eutrophic changes in lake. Seasonal variation of zooplanktons and nutrients plays an important role m
ecosystem alteration of aquatic environment. Knowledge on nutrients and plankton dynamic of the lake
provide basis for modality and extent of exploitation of fishery resources of the lakes. Therefore, monthly
zooplankton and nutrients data collected from five different depth gradients of Lake Begnas for year 1995
and 2005 were analyzed and compared to investigate changes in zooplankton community and density.Link for e-copy: http://elibrary.narc.gov.np/?r=276 Changes In Zooplanktons Community And Density With Reference To Nutrients In A Subtropical Lake Begnas, Pokhara Valley [printed text] / MA. Husen, Author ; RP Dhakal, Author ; SK Wagle, Author ; JD Bista, Author . - [s.d.] . - 54-58 p.
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Languages : English (eng)
Abstract: Several species of zooplankton are used as indicators to identify different physico-chemical advection ?r
eutrophic changes in lake. Seasonal variation of zooplanktons and nutrients plays an important role m
ecosystem alteration of aquatic environment. Knowledge on nutrients and plankton dynamic of the lake
provide basis for modality and extent of exploitation of fishery resources of the lakes. Therefore, monthly
zooplankton and nutrients data collected from five different depth gradients of Lake Begnas for year 1995
and 2005 were analyzed and compared to investigate changes in zooplankton community and density.Link for e-copy: http://elibrary.narc.gov.np/?r=276 E-copies
http://nkcs.org.np/narc/dl/?r=276URL
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Title : Effect Of Different Starter Feed On The Survival Rate And Growth Of African Catfish (Clarias Garjepinus) Fry Material Type: printed text Authors: RK. Shrestha, Author ; MA. Husen, Author ; Shrestha, B., Author ; SK Wagle, Author Pagination: 86-90 p. Languages : English (eng) Abstract: Formulation of the most desirable feed which satisfy the nutritional requirement of catfish ( Clarias gariepinus)
larvae is one of major task in development of aquaculture packages of practices of the catfish. To evaluate the
effect of live food organisms and several feed formulation on the survival and growth of catfish larvae
experiments were carried out. Treatments for starter feed includes zooplankton and artemia naupli as live food
organisms and carp micro-feed (formulated ration) were fed to the experimental catfish larvae.
The growth of catfish larvae was significantly (P<0.05) higher in zooplankton fed condition. The mean final
weight attained by catfish larvae was 197.3 mg and 126.7 mg, respectively, feeding with zooplankton and
artemia naupli. The mean survival rate for C. gariepinus fry fed on zooplankton and artemia naupli at the end of
4 weeks experiment was 53.3% and 56.8%, respectively. Absolute mortality was evidenced for larvae fed under
carp micro-feed. An increased zooplankton density in nursing water (423 to 1268/L) did not influence (P>0.05)
the growth of larvae. Larval growth was significantly (P<0.05) increased at increasing density ( 604 to 1813/L of
artemia naupli in nursing water. Survival rate of larvae was found to decrease as the feeding rate of artemia
naupli increased while zooplankton fed larvae showed increased survival rate (77.0 to 82.0%) in response to
increase in feeding rate.Link for e-copy: http://elibrary.narc.gov.np/?r=281 Effect Of Different Starter Feed On The Survival Rate And Growth Of African Catfish (Clarias Garjepinus) Fry [printed text] / RK. Shrestha, Author ; MA. Husen, Author ; Shrestha, B., Author ; SK Wagle, Author . - [s.d.] . - 86-90 p.
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Languages : English (eng)
Abstract: Formulation of the most desirable feed which satisfy the nutritional requirement of catfish ( Clarias gariepinus)
larvae is one of major task in development of aquaculture packages of practices of the catfish. To evaluate the
effect of live food organisms and several feed formulation on the survival and growth of catfish larvae
experiments were carried out. Treatments for starter feed includes zooplankton and artemia naupli as live food
organisms and carp micro-feed (formulated ration) were fed to the experimental catfish larvae.
The growth of catfish larvae was significantly (P<0.05) higher in zooplankton fed condition. The mean final
weight attained by catfish larvae was 197.3 mg and 126.7 mg, respectively, feeding with zooplankton and
artemia naupli. The mean survival rate for C. gariepinus fry fed on zooplankton and artemia naupli at the end of
4 weeks experiment was 53.3% and 56.8%, respectively. Absolute mortality was evidenced for larvae fed under
carp micro-feed. An increased zooplankton density in nursing water (423 to 1268/L) did not influence (P>0.05)
the growth of larvae. Larval growth was significantly (P<0.05) increased at increasing density ( 604 to 1813/L of
artemia naupli in nursing water. Survival rate of larvae was found to decrease as the feeding rate of artemia
naupli increased while zooplankton fed larvae showed increased survival rate (77.0 to 82.0%) in response to
increase in feeding rate.Link for e-copy: http://elibrary.narc.gov.np/?r=281 E-copies
http://nkcs.org.np/narc/dl/?r=281URL
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Title : Evaluating Growth Performance Of Himalayan Sahar (Tor Putitora) For Aquaculture Development In Mid Idlls And Southern Plain Nepal Material Type: printed text Authors: JD Bista, Author ; SK Wagle, Author ; MK Shrestha, Author ; AB Thapa, Author Pagination: 49-53 p. Languages : English (eng) Abstract: Promotion of indigenous species in aquaculture is imperative for sustainable aquaculture production and
conservation of aquatic biodiversity. Indigenous sahar (Tor putitora) constituted substantial natural fishery
in major riverine and lacustrine ecosystem of Nepal in past. Presently their diversity has been threatened by
various anthropogenic activities. With the conservation and aquaculture ·point of view, considerable
development has been achieved on artificial propagation of this species. Performance ofT. putitora on its
growth and yield in different eco-region are under evaluation.
Growth experiment of sahar with different age cohort was conducted in ponds at Pokhara valley and
Tarahara, representing northern mid hill and southern plain, respectively during February 2005 to July 2005.
The growth of sahar was faster in warmer environment as evidenced by significant different (P<0.05) in
body weight gain was found between Tarahara (66.5 g) and Pokhara (52.8 g) after 120 days of rearing of
small size (3.5-4.0 g) sahar at mean water temperature of 26.3 and 29.1 °C, respectively. Differences in
initial stocking size were also found to affect growth rate of sahar. Sahar stocked with initial average weight
of 4.0 g grew at the rate of 0.40 g.day-1 while the growth rate of large size (24.9 g) sahar was 0.49 g.day-1
during February to June in Pokhara and the differences were significant (P<0.05). One-year old fingerling of
sahar (50.9 g) grew much faster (1.12 g.day- 1) and attained final weight of 219.4 g within 150 days in
Tarahara. These results indicate that sahar has a growth potential comparable to that of slow growing
aquacultured species (viz. rohu), but comparatively fetch a very high market price and is of high cultural
value.Link for e-copy: http://elibrary.narc.gov.np/?r=275 Evaluating Growth Performance Of Himalayan Sahar (Tor Putitora) For Aquaculture Development In Mid Idlls And Southern Plain Nepal [printed text] / JD Bista, Author ; SK Wagle, Author ; MK Shrestha, Author ; AB Thapa, Author . - [s.d.] . - 49-53 p.
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Languages : English (eng)
Abstract: Promotion of indigenous species in aquaculture is imperative for sustainable aquaculture production and
conservation of aquatic biodiversity. Indigenous sahar (Tor putitora) constituted substantial natural fishery
in major riverine and lacustrine ecosystem of Nepal in past. Presently their diversity has been threatened by
various anthropogenic activities. With the conservation and aquaculture ·point of view, considerable
development has been achieved on artificial propagation of this species. Performance ofT. putitora on its
growth and yield in different eco-region are under evaluation.
Growth experiment of sahar with different age cohort was conducted in ponds at Pokhara valley and
Tarahara, representing northern mid hill and southern plain, respectively during February 2005 to July 2005.
The growth of sahar was faster in warmer environment as evidenced by significant different (P<0.05) in
body weight gain was found between Tarahara (66.5 g) and Pokhara (52.8 g) after 120 days of rearing of
small size (3.5-4.0 g) sahar at mean water temperature of 26.3 and 29.1 °C, respectively. Differences in
initial stocking size were also found to affect growth rate of sahar. Sahar stocked with initial average weight
of 4.0 g grew at the rate of 0.40 g.day-1 while the growth rate of large size (24.9 g) sahar was 0.49 g.day-1
during February to June in Pokhara and the differences were significant (P<0.05). One-year old fingerling of
sahar (50.9 g) grew much faster (1.12 g.day- 1) and attained final weight of 219.4 g within 150 days in
Tarahara. These results indicate that sahar has a growth potential comparable to that of slow growing
aquacultured species (viz. rohu), but comparatively fetch a very high market price and is of high cultural
value.Link for e-copy: http://elibrary.narc.gov.np/?r=275 E-copies
http://nkcs.org.np/narc/dl/?r=275URL
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Title : Preliminary Results On The Hybridization Between African Catfish (Clarias Gariepinus) And Asian Catfish (Clarias Batrachus) Material Type: printed text Authors: SK Wagle, Author ; AP Baidya, Author ; B Shrestha, Author ; MA. Husen, Author Pagination: 27-35 p. Languages : English (eng) Abstract: Hybrid was produced through cross breeding between native Asian catfish (C. batrachus) male and African
C. gariepinus. Heterosis could not be compared between Fl hybrids because of poor gametic viability ofthe
cross between C. batrachusC¥ and C. gariepinus (). Hybrid was compared at different stages from larval to
market size with its respective control sibs. The average performance traits (viz. fertility, hatching rate,
growth and survival) of individuals derived from cross between C. gariepinus~ and C. batrachus c3 was
significantly better than its one of the control sib (C. batraclms). Hybrid showed high rate (31.5%) of
deformity and abnormality in larval stage before the start of exogenous feeding and deformity extend until
maturity. Significant divergence in morph type resembling to both of their parents and corresponding growth
was found in hybrid population. In this preliminary study, hybrid showed heterotic in growth performance
trait which might have important implication for the aquaculture industry.Preliminary Results On The Hybridization Between African Catfish (Clarias Gariepinus) And Asian Catfish (Clarias Batrachus) [printed text] / SK Wagle, Author ; AP Baidya, Author ; B Shrestha, Author ; MA. Husen, Author . - [s.d.] . - 27-35 p.
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Languages : English (eng)
Abstract: Hybrid was produced through cross breeding between native Asian catfish (C. batrachus) male and African
C. gariepinus. Heterosis could not be compared between Fl hybrids because of poor gametic viability ofthe
cross between C. batrachusC¥ and C. gariepinus (). Hybrid was compared at different stages from larval to
market size with its respective control sibs. The average performance traits (viz. fertility, hatching rate,
growth and survival) of individuals derived from cross between C. gariepinus~ and C. batrachus c3 was
significantly better than its one of the control sib (C. batraclms). Hybrid showed high rate (31.5%) of
deformity and abnormality in larval stage before the start of exogenous feeding and deformity extend until
maturity. Significant divergence in morph type resembling to both of their parents and corresponding growth
was found in hybrid population. In this preliminary study, hybrid showed heterotic in growth performance
trait which might have important implication for the aquaculture industry.
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Title : Preliminary Results On The Hybridization Between African Catfish (Clarias Gariepinus) And Asian Catfish (Clarias Batrachus) Material Type: printed text Authors: SK Wagle, Author ; AP Baidya, Author ; B Shrestha, Author ; MA. Husen, Author Pagination: 27-35 p. Languages : English (eng) Abstract: Hybrid was produced through cross breeding between native Asian catfish (C. batrachus) male and African
C. gariepinus. Heterosis could not be compared between Fl hybrids because of poor gametic viability ofthe
cross between C. batrachusC¥ and C. gariepinus (). Hybrid was compared at different stages from larval to
market size with its respective control sibs. The average performance traits (viz. fertility, hatching rate,
growth and survival) of individuals derived from cross between C. gariepinus~ and C. batrachus c3 was
significantly better than its one of the control sib (C. batraclms). Hybrid showed high rate (31.5%) of
deformity and abnormality in larval stage before the start of exogenous feeding and deformity extend until
maturity. Significant divergence in morph type resembling to both of their parents and corresponding growth
was found in hybrid population. In this preliminary study, hybrid showed heterotic in growth performance
trait which might have important implication for the aquaculture industry.Link for e-copy: http://elibrary.narc.gov.np/?r=272 Preliminary Results On The Hybridization Between African Catfish (Clarias Gariepinus) And Asian Catfish (Clarias Batrachus) [printed text] / SK Wagle, Author ; AP Baidya, Author ; B Shrestha, Author ; MA. Husen, Author . - [s.d.] . - 27-35 p.
in Proceedings of the 7th (seventh) National Workshop on Livestock and Fisheries Research, June 22-27, 2007 / Shrestha, B.S.
Languages : English (eng)
Abstract: Hybrid was produced through cross breeding between native Asian catfish (C. batrachus) male and African
C. gariepinus. Heterosis could not be compared between Fl hybrids because of poor gametic viability ofthe
cross between C. batrachusC¥ and C. gariepinus (). Hybrid was compared at different stages from larval to
market size with its respective control sibs. The average performance traits (viz. fertility, hatching rate,
growth and survival) of individuals derived from cross between C. gariepinus~ and C. batrachus c3 was
significantly better than its one of the control sib (C. batraclms). Hybrid showed high rate (31.5%) of
deformity and abnormality in larval stage before the start of exogenous feeding and deformity extend until
maturity. Significant divergence in morph type resembling to both of their parents and corresponding growth
was found in hybrid population. In this preliminary study, hybrid showed heterotic in growth performance
trait which might have important implication for the aquaculture industry.Link for e-copy: http://elibrary.narc.gov.np/?r=272 E-copies
http://nkcs.org.np/narc/dl/?r=272URL
