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The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry

A Iimnological study was conducted in a tropical nursery pond used for fry production of Helostoma temmincki. Water temperature, light, dissolved oxygen, conductivity, total alkalinity, pH, nitrates, phosphates, phytoplankton density and biomass, zooplankton density, benthos and fish were sampled an...

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Main Authors: Cheah, Sin Hock, Abd. Satar, Mustafa Kamal, Md. Yusoff, Fatimah
Format: Article
Language:English
Published: Malaysian Society of Applied Biology 1988
Online Access:http://psasir.upm.edu.my/id/eprint/39941/1/31%20-%20The%20limnological%20conditions%20of%20a%20tropical%20nursery%20pond%20used%20for%20production%20of%20helostoma%20temmincki%20fry.pdf
http://psasir.upm.edu.my/id/eprint/39941/
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spelling my.upm.eprints.399412015-09-23T03:58:02Z http://psasir.upm.edu.my/id/eprint/39941/ The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry Cheah, Sin Hock Abd. Satar, Mustafa Kamal Md. Yusoff, Fatimah A Iimnological study was conducted in a tropical nursery pond used for fry production of Helostoma temmincki. Water temperature, light, dissolved oxygen, conductivity, total alkalinity, pH, nitrates, phosphates, phytoplankton density and biomass, zooplankton density, benthos and fish were sampled and analyzed weekly during the 4 week study period. Oxygen concentrations were low (2.42-4.28 mg/l), The water was acidic (pH: 5.78-6.64) with low alkalinity (14.89-28.40 mg CaC03/l)· Inorganic nitrogen values were relatively low (0.051-0.092 rng N/1) in relation to orthophosphate concentration (0.030-0.064 mg/l) for balanced phytoplankton uptake. Phytoplankton density and biomass were low with ranges of 413-3046 cells/ml and 12.05-27.88 mg Chlorophyll a mg/m3 respectively. Zooplankton density was also low (44.8-460 organisms/l). The water was clear with light penetration reaching pond bottom. Chironomus formed 77% of the total benthos which comprised of 8 species. Two mollusc species Gyraulus convexciusculus and Melanoides tuberculata formed the next abundant group. H. temmincki fry had an average growth of 1.5 mm/day and 46.4 mg/day and a survival rate of 16.4%. Improvements in nursery pond management to enhance fry production are discussed Malaysian Society of Applied Biology 1988 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/39941/1/31%20-%20The%20limnological%20conditions%20of%20a%20tropical%20nursery%20pond%20used%20for%20production%20of%20helostoma%20temmincki%20fry.pdf Cheah, Sin Hock and Abd. Satar, Mustafa Kamal and Md. Yusoff, Fatimah (1988) The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry. Malaysian Applied Biology, 17 (2). pp. 65-75. ISSN 0126-8643
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A Iimnological study was conducted in a tropical nursery pond used for fry production of Helostoma temmincki. Water temperature, light, dissolved oxygen, conductivity, total alkalinity, pH, nitrates, phosphates, phytoplankton density and biomass, zooplankton density, benthos and fish were sampled and analyzed weekly during the 4 week study period. Oxygen concentrations were low (2.42-4.28 mg/l), The water was acidic (pH: 5.78-6.64) with low alkalinity (14.89-28.40 mg CaC03/l)· Inorganic nitrogen values were relatively low (0.051-0.092 rng N/1) in relation to orthophosphate concentration (0.030-0.064 mg/l) for balanced phytoplankton uptake. Phytoplankton density and biomass were low with ranges of 413-3046 cells/ml and 12.05-27.88 mg Chlorophyll a mg/m3 respectively. Zooplankton density was also low (44.8-460 organisms/l). The water was clear with light penetration reaching pond bottom. Chironomus formed 77% of the total benthos which comprised of 8 species. Two mollusc species Gyraulus convexciusculus and Melanoides tuberculata formed the next abundant group. H. temmincki fry had an average growth of 1.5 mm/day and 46.4 mg/day and a survival rate of 16.4%. Improvements in nursery pond management to enhance fry production are discussed
format Article
author Cheah, Sin Hock
Abd. Satar, Mustafa Kamal
Md. Yusoff, Fatimah
spellingShingle Cheah, Sin Hock
Abd. Satar, Mustafa Kamal
Md. Yusoff, Fatimah
The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
author_facet Cheah, Sin Hock
Abd. Satar, Mustafa Kamal
Md. Yusoff, Fatimah
author_sort Cheah, Sin Hock
title The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
title_short The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
title_full The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
title_fullStr The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
title_full_unstemmed The limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
title_sort limnological conditions of a tropical nursery pond used for production of helostoma temmincki fry
publisher Malaysian Society of Applied Biology
publishDate 1988
url http://psasir.upm.edu.my/id/eprint/39941/1/31%20-%20The%20limnological%20conditions%20of%20a%20tropical%20nursery%20pond%20used%20for%20production%20of%20helostoma%20temmincki%20fry.pdf
http://psasir.upm.edu.my/id/eprint/39941/
_version_ 1643832569543786496
score 13.211869

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