Effect of three food types on the population growth of Brachionus calyciflorus and Brachionus patulus< (Rotifera: Brachionidae)

Sarma, S. S. S.; Larios Jurado, Paula Susana; Nandini, S.

Effect of three food types on the population growth of Brachionus calyciflorus and Brachionus patulus (Rotifera: Brachionidae)

dc.creator	Sarma, S. S. S.
dc.creator	Larios Jurado, Paula Susana
dc.creator	Nandini, S.
dc.date	2014-11-24
dc.date.accessioned	2016-05-03T15:26:04Z
dc.date.available	2016-05-03T15:26:04Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/16755
dc.identifier.uri	https://hdl.handle.net/10669/25815
dc.description	We compared the population growth of B. calyciflorus and B. patulus using the green alga Chlorella vulgaris, baker’s yeast Saccharomyces cerevisiae or their mixture in equal proportions as food. Food was offered once every 24 h in two concentrations (low: 1x106 and high: 3x106 cells ml-1) separately for each species. The experiments were terminated after 15 days. In general, at any food type or concentration, B. patulus reached a higher population density. A diet of Chlorella alone supported a higher population growth of both rotifer species than yeast alone. B. calyciflorus and B. patulus achieved highest population densities (103±8 ind. ml-1 and 296±20 ind. ml-1, respectively) on a diet of Chlorella at 3x106 cells ml-1. When cultured using the mixture of Chlorella and yeast, the maximal population densities of B. calyciflorus were lower than those grown on Chlorella. Under similar conditions, the maximal abundance values of B. patulus were comparable in both food types. Regardless of food type and density the rate of population increase per day (r) for B. calyciflorus varied from 0.13±0.03 to 0.63±0.04. These values for B. patulus ranged from 0.19±0.01 to 0.37±0.01. The results indicated that even though Chlorella was a superior food for the tested rotifers, yeast can be effectively used at low concentrations to supplement algal requirements in rotifer culture systems.	en-US
dc.description	We compared the population growth of B. calyciflorus and B. patulus using the green alga Chlorella vulgaris, baker’s yeast Saccharomyces cerevisiae or their mixture in equal proportions as food. Food was offered once every 24 h in two concentrations (low: 1x106 and high: 3x106 cells ml-1) separately for each species. The experiments were terminated after 15 days. In general, at any food type or concentration, B. patulus reached a higher population density. A diet of Chlorella alone supported a higher population growth of both rotifer species than yeast alone. B. calyciflorus and B. patulus achieved highest population densities (103±8 ind. ml-1 and 296±20 ind. ml-1, respectively) on a diet of Chlorella at 3x106 cells ml-1. When cultured using the mixture of Chlorella and yeast, the maximal population densities of B. calyciflorus were lower than those grown on Chlorella. Under similar conditions, the maximal abundance values of B. patulus were comparable in both food types. Regardless of food type and density the rate of population increase per day (r) for B. calyciflorus varied from 0.13±0.03 to 0.63±0.04. These values for B. patulus ranged from 0.19±0.01 to 0.37±0.01. The results indicated that even though Chlorella was a superior food for the tested rotifers, yeast can be effectively used at low concentrations to supplement algal requirements in rotifer culture systems.	es-ES
dc.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica	en-US
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 49 (1) March 2001; 77-84	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 49 (1) March 2001; 77-84	es-ES
dc.source	Revista Biología Tropical; Vol. 49 (1) March 2001; 77-84	pt-PT
dc.source	2215-2075
dc.source	0034-7744
dc.subject	population growth	en-US
dc.subject	alga	en-US
dc.subject	yeast	en-US
dc.subject	rotifera	en-US
dc.title	Effect of three food types on the population growth of Brachionus calyciflorus and Brachionus patulus< (Rotifera: Brachionidae)	en-US
dc.title	Effect of three food types on the population growth of Brachionus calyciflorus and Brachionus patulus (Rotifera: Brachionidae)	es-ES
dc.type	artículo original

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