Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds

Using the common carp Cyprinus carpio L. in polyculture ponds to increase both phyto- and zooplankton availability has become a popular practice for the cultivation of planktivorous fish, such as rohu Labeo rohita Hamilton. However, the dynamics of how common carp influences the environment and ecol...

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Autor principal:	MM Rahman
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2015
Materias:	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/e1d745ab874a44bfbe2c8b733b5192ef
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spelling	oai:doaj.org-article:e1d745ab874a44bfbe2c8b733b5192ef2021-11-16T10:32:02ZEffects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds1869-215X1869-753410.3354/aei00127https://doaj.org/article/e1d745ab874a44bfbe2c8b733b5192ef2015-03-01T00:00:00Zhttps://www.int-res.com/abstracts/aei/v6/n3/p223-232/https://doaj.org/toc/1869-215Xhttps://doaj.org/toc/1869-7534Using the common carp Cyprinus carpio L. in polyculture ponds to increase both phyto- and zooplankton availability has become a popular practice for the cultivation of planktivorous fish, such as rohu Labeo rohita Hamilton. However, the dynamics of how common carp influences the environment and ecology in polyculture ponds are unclear. In the present study, the effects of various stocking densities (0, 0.5 and 1 m-2) of common carp on the dynamics of nutrients, phytoplankton, zooplankton and benthic macroinvertebrates were investigated every other week over a 137 d period in rohu (density: 1.5 m-2) ponds under fed and unfed conditions. All environmental parameters and all groups of phytoplankton, zooplankton and benthic macroinvertebrates significantly changed over time, although trends in these changes were inconsistent at different common carp densities. The correlation between phosphate-phosphorus (PO4-P) and total phytoplankton biomass indicated that the phytoplankton biomass was limited by low PO4-P concentrations in ponds without common carp. Common carp-driven resuspension increased N and P fluxes from the sediment to the water column and subsequently increased primary and secondary production. A stocking density of 0.5 common carp m-2 had strong effects on nutrients and both phyto- and zooplankton availability, with an increasing trend over time. These effects were partially lost in ponds with 1 common carp m-2, which can be considered as overstocking. This study suggests that an optimal density of common carp can be used as a management tool to manipulate the aquaculture environment for better growth and production of fish.MM RahmanInter-ResearcharticleAquaculture. Fisheries. AnglingSH1-691EcologyQH540-549.5ENAquaculture Environment Interactions, Vol 6, Iss 3, Pp 223-232 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5
spellingShingle	Aquaculture. Fisheries. Angling SH1-691 Ecology QH540-549.5 MM Rahman Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
description	Using the common carp Cyprinus carpio L. in polyculture ponds to increase both phyto- and zooplankton availability has become a popular practice for the cultivation of planktivorous fish, such as rohu Labeo rohita Hamilton. However, the dynamics of how common carp influences the environment and ecology in polyculture ponds are unclear. In the present study, the effects of various stocking densities (0, 0.5 and 1 m-2) of common carp on the dynamics of nutrients, phytoplankton, zooplankton and benthic macroinvertebrates were investigated every other week over a 137 d period in rohu (density: 1.5 m-2) ponds under fed and unfed conditions. All environmental parameters and all groups of phytoplankton, zooplankton and benthic macroinvertebrates significantly changed over time, although trends in these changes were inconsistent at different common carp densities. The correlation between phosphate-phosphorus (PO4-P) and total phytoplankton biomass indicated that the phytoplankton biomass was limited by low PO4-P concentrations in ponds without common carp. Common carp-driven resuspension increased N and P fluxes from the sediment to the water column and subsequently increased primary and secondary production. A stocking density of 0.5 common carp m-2 had strong effects on nutrients and both phyto- and zooplankton availability, with an increasing trend over time. These effects were partially lost in ponds with 1 common carp m-2, which can be considered as overstocking. This study suggests that an optimal density of common carp can be used as a management tool to manipulate the aquaculture environment for better growth and production of fish.
format	article
author	MM Rahman
author_facet	MM Rahman
author_sort	MM Rahman
title	Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
title_short	Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
title_full	Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
title_fullStr	Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
title_full_unstemmed	Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
title_sort	effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/e1d745ab874a44bfbe2c8b733b5192ef
work_keys_str_mv	AT mmrahman effectsofcoculturedcommoncarponnutrientsandfoodwebdynamicsinrohuaquacultureponds
_version_	1718426577215160320

Effects of co-cultured common carp on nutrients and food web dynamics in rohu aquaculture ponds

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