Influence of management on plankton communitie of Fishponds during the dry and rainy seasons

Sipabua-Tavares, Lucia Helena; Millan, Rodrigo Ney; Amaral, Atansio Alves do

doi:10.4322/actalb.02201009

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…This may be even more noticeable with fish that are not fed diets formulated according to their nutritional requirements, a common situation for the native fish species farmed in Brazil (Cyrino, Bicudo, Sado, Borghesi & Dairiki, 2010). Considering this, it is important to understand the role of natural food in the farming of a fish species, mainly the planktonic community that may be increased by pond fertilization practices (Bhakta, Sarkar, Jana & Jana, 2004;Sipa uba-Tavares, Millan & Amaral, 2010). In addition, understanding food item selectivity is important to provide guidelines for such pond fertilization practices and ultimately to increase the growth performance of the target species.…”

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Natural food intake by juvenile Arapaima gigas during the grow-out phase in earthen ponds

2018

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In carnivorous fish species, zooplankton is one of the main food items in the early life stages and some fish species continue feeding on such food items further along the life stages even in the farming environment. In this study, the intake of natural food items was assessed in juvenile pirarucu Arapaima gigas reared in earthen ponds. Juvenile pirarucu (12.2 ± 4.32 g and 12.1 ± 1.13 cm) were stocked in fertilized earthen ponds (240 m²). For the analysis of the fish stomach content and plankton in the pond water, the fish and pond water were sampled weekly for 75 days and biweekly until the fish reached a mean weight of 750 g. Although artificial feed was used, pirarucu also ingested the natural food available in the pond water. Among the zooplankton, pirarucu demonstrated feeding preference for cladocerans despite the abundance of rotifers and copepods. Cladocerans were present in more than 80% of the stomach contents of fish up to 300 g and in 65%, 45% and 17% of fish of 301–500 g, 501–700 g and 701–900 g respectively. Copepods were present only in fish up to 500 g at low abundance. High ingestion of insects and plant material was observed in the stomach content of fish of all size classes. The results demonstrate that juvenile pirarucu ingest natural food available in the farming pond and suggests that the adoption of pond fertilization practices may have positive effects on fish growth performance.

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confidence: 99%

Natural food intake by juvenile Arapaima gigas during the grow-out phase in earthen ponds

2018

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“…The demand of fish larvae by live food as the zooplanktonic organisms is influenced by environmental variables, in addition to the management practices adopted in each system (Sá-Junior and Sipaúba Tavares, 1997;Sipaúba-Tavares, 2010b). In semi-intensive aquaculture the natural food production is very important and therefore any advance in the understanding of ecological interactions and processes that can influence zooplankton community composition and production are relevant to future advances in aquaculture.…”

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confidence: 99%

Effects of liming and development of Curimbatá (Prochilodus lineatus) larvae on the abundance of zooplankton in fish ponds

Paes

Rojas

et al. 2012

Acta Limnol. Bras.

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AIM: We aimed to evaluate the influence of the correction of the water alkalinity in the fish ponds on the density of zooplankton under a period they were stocked with larvae of Prochilodus lineatus, a neotropical fish called "Curimbatá". METHODS: We used a factorial design completely randomized. In one plot (2 ponds) there was no correction of the alkalinity of the water (20 mg CaCO3.L-1) and in two others, this variable was adjusted weekly to values around 30 and 60 mg CaCO3.L-1 ¹, with two replicates each. Zooplankton was sampled weekly and the experiment lasted 63 days. RESULTS: Significant differences in the density of the zooplankton over time (F = 6.78, p < 0.05) were found and there was a sharp decrease in zooplankton density from first to second week, and successive small increases in density from the fourth week until the end of the experiment. When considering the entire study period, alkalinity correction 60 mg CaCO3.L-1 resulted in higher density of zooplankton. Great changes in zooplankton composition occurred. Rotifera were dominant at the beginning of the experiment and Cladocera and Copepoda in the later weeks possibly due to an interplay of dilution by rain and fish predation in the initial part of the experiment and due to both alkalinity correction and predation by both fish and predatory copepods from the fourth week until the end. CONCLUSION: The experiment corroborated the hypothesis that correction of water alkalinity in ponds does favor zooplankton development but also highlighted biotic and abiotic interaction of factors operating simultaneously.

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“…A common practice in aquaculture farms is the fertilization of shallow ponds to enhance algae growth and promote the production of zooplankton (Sipaúba-Tavares et al, 2010). Zooplankton is a key component of freshwater systems and it is used as a bioindicator in freshwater environment due to its short life cycle and high reproductive efficiency.…”

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confidence: 99%

Limnological Aspects of a Shallow Pond Used as Receiver Aquaculture Wastes and for Agricultural Irrigation

Sipaúba-Tavares¹,

Silva²,

Millan³

et al. 2021

Bol. Inst. Pesca

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Water samples, zooplankton community and sediment samples were analyzed at three sites in a pond receiving wastes, bi-weekly for seven months, covering the rainy and dry seasons. Water quality parameters failed to show significant differences between the sites for turbidity, total suspended solids, dissolved oxygen, transparency, conductivity, alkalinity and total phosphorous. Only temperature was different between the seasons. In the case of sediment, only aluminum (Al) was not different during the experimental period when highest calcium (Ca) concentrations were reported. The relative abundance of Rotifera during the sampling period reached 80-96% (rainy season) and 59-98% (dry season) in total zooplankton. Current study demonstrated that the water quality of shallow pond associated with allochthonous materials from aquaculture farm significantly influenced the structure of zooplankton assemblage due to high nutrient concentrations, conductivity, alkalinity and chlorophyll-a causing more fertilized water. However, heavy rains (February-April) and continuous water flow favored aeration (dissolved oxygen >5.2 ± 1 mg L-1). The use of pond water for agricultural irrigation or for other purposes, must be analyzed more effectively, avoiding problems caused by its usage.

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Influence of management on plankton communitie of Fishponds during the dry and rainy seasons

Cited by 5 publications

References 9 publications

Natural food intake by juvenile Arapaima gigas during the grow-out phase in earthen ponds

Natural food intake by juvenile Arapaima gigas during the grow-out phase in earthen ponds

Effects of liming and development of Curimbatá (Prochilodus lineatus) larvae on the abundance of zooplankton in fish ponds

Limnological Aspects of a Shallow Pond Used as Receiver Aquaculture Wastes and for Agricultural Irrigation

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