Filtration and clearance rates of Anadara grandis juveniles (Pelecypoda, Arcidae) with different temperatures and suspended matter concentrations
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad de Costa Rica
2006
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| _version_ | 1876430343087587328 |
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| author | Anselmo Miranda-Baeza |
| author_facet | Anselmo Miranda-Baeza |
| contents | Filtration and clearance rates of Anadara grandis juveniles (Pelecypoda, Arcidae) with different temperatures and suspended matter concentrations Anselmo Miranda-Baeza Beatriz Cordero-Esquivel Domenico Voltolina Biología temperature clearance rate Anadara grandis filtration rate suspended matter The mangrove cockle Anadara grandis (Broderip and Sowerby, 1829) is a potential candidate for aquaculture and for bioremediation of aquaculture effluents in the tropical and subtropical coastal areas of the eastern Pacific Ocean. Laboratory-produced spat are available, but there is no information on their responses to the range of environmental conditions to which they might be subject during the growth cycle. The aim of this study was to evaluate the filtration and clearance rates of A. grandis spat (shell length 9.50±0.37 mm) with a food concentration (7.5mg·l(7.5 mg∙l-1) at four different temperatures(22,25,28 and 31ºC, with ph = 7.5±0.2 and at four different temperatures (22, 25, 28 and 31ºC with pH= 0.2 and O2 concentration of 6.4±0.5 mg·l-1; experiment one); and with a temperature (25°C) and five concentrations of suspended matter (from 7.5 to 29 mg·l-1 and pH and O2 values of 7.9±0.2 and 6.8± 0.4 mg·l-1; experiment two). Filtration and clearance rates were highest at 25ºC and significantly different (p<.05) from those obtained at 22, 28 and 31ºC; the clearance rates had the same tendency but the differences were not significant (p>.05). In the second experiment filtration increased according to the amount of food available, but there were no significant differences (p>.05) between 7.5 and 11 mg·l-1 and from 22.4 to 29 mg·l-1. The trend was similar for clearance, and in this case significant differences were found (p<.05) between 7.5, 22.4 and 29 mg·l-1. Filtration at 31°C was close to 80% at the optimum temperature of 25°C, which indicates that A. grandis is a good candidate for tropical aquaculture. Clearance increased with high concentrations of suspended solids, but the production of biodeposits could be a source of environmental concern. There fore, the possibility of using this species for bioremediationof aquaculture effluents should be studied with larger specimens and at higher seston concentrations 2006 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44954309 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.54 |
| format | Artículo científico |
| id | redalyc_44954309 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Filtration and clearance rates of Anadara grandis juveniles (Pelecypoda, Arcidae) with different temperatures and suspended matter concentrations Anselmo Miranda-Baeza Biología temperature clearance rate Anadara grandis filtration rate suspended matter Filtration and clearance rates of Anadara grandis juveniles (Pelecypoda, Arcidae) with different temperatures and suspended matter concentrations Anselmo Miranda-Baeza Beatriz Cordero-Esquivel Domenico Voltolina Biología temperature clearance rate Anadara grandis filtration rate suspended matter The mangrove cockle Anadara grandis (Broderip and Sowerby, 1829) is a potential candidate for aquaculture and for bioremediation of aquaculture effluents in the tropical and subtropical coastal areas of the eastern Pacific Ocean. Laboratory-produced spat are available, but there is no information on their responses to the range of environmental conditions to which they might be subject during the growth cycle. The aim of this study was to evaluate the filtration and clearance rates of A. grandis spat (shell length 9.50±0.37 mm) with a food concentration (7.5mg·l(7.5 mg∙l-1) at four different temperatures(22,25,28 and 31ºC, with ph = 7.5±0.2 and at four different temperatures (22, 25, 28 and 31ºC with pH= 0.2 and O2 concentration of 6.4±0.5 mg·l-1; experiment one); and with a temperature (25°C) and five concentrations of suspended matter (from 7.5 to 29 mg·l-1 and pH and O2 values of 7.9±0.2 and 6.8± 0.4 mg·l-1; experiment two). Filtration and clearance rates were highest at 25ºC and significantly different (p<.05) from those obtained at 22, 28 and 31ºC; the clearance rates had the same tendency but the differences were not significant (p>.05). In the second experiment filtration increased according to the amount of food available, but there were no significant differences (p>.05) between 7.5 and 11 mg·l-1 and from 22.4 to 29 mg·l-1. The trend was similar for clearance, and in this case significant differences were found (p<.05) between 7.5, 22.4 and 29 mg·l-1. Filtration at 31°C was close to 80% at the optimum temperature of 25°C, which indicates that A. grandis is a good candidate for tropical aquaculture. Clearance increased with high concentrations of suspended solids, but the production of biodeposits could be a source of environmental concern. There fore, the possibility of using this species for bioremediationof aquaculture effluents should be studied with larger specimens and at higher seston concentrations 2006 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44954309 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.54 |
| title | Filtration and clearance rates of Anadara grandis juveniles (Pelecypoda, Arcidae) with different temperatures and suspended matter concentrations |
| topic | Biología temperature clearance rate Anadara grandis filtration rate suspended matter |
| url | https://www.redalyc.org/articulo.oa?id=44954309 |