EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER
The purpose of this study was to produce Daphnia magna in wastewater from Tilapia farmed in a biofloc system, to evaluate three different carbohydrate:nitrogen ratios. The experiment was conducted for 30 days following a completely randomized experimental design, with the three treatments: C:N 10:1,...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto de Pesca
2019-09-01
|
| Series: | Boletim do Instituto de Pesca |
| Subjects: | |
| Online Access: | https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1444/1395 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849700942723678208 |
|---|---|
| author | Géssica Cavalcanti Pereira MOTA Clarissa Vilela Figueiredo da Silva CAMPOS Laenne Barbara Silva de MORAES David Nunes Aguiar BRUZACA Luís Otávio BRITO Alfredo Olivera GÁLVEZ |
| author_facet | Géssica Cavalcanti Pereira MOTA Clarissa Vilela Figueiredo da Silva CAMPOS Laenne Barbara Silva de MORAES David Nunes Aguiar BRUZACA Luís Otávio BRITO Alfredo Olivera GÁLVEZ |
| author_sort | Géssica Cavalcanti Pereira MOTA |
| collection | DOAJ |
| description | The purpose of this study was to produce Daphnia magna in wastewater from Tilapia farmed in a biofloc system, to evaluate three different carbohydrate:nitrogen ratios. The experiment was conducted for 30 days following a completely randomized experimental design, with the three treatments: C:N 10:1, C:N 15:1 and C:N 20:1, all fed with Chlorella vulgaris. The physical-chemical variables of the water analyzed were: temperature, dissolved oxygen (DO), pH, TAN, NO2 , hardness and alkalinity. The following growth variables of the Daphnia were also evaluated: Maximum average density (MAD), Maximum density day (MDD), Specific growth rate (SGR), Doubling time (DT) and yield (Y). The water quality variables remained in the range of ideal conditions for the species, presenting significant differences (p <0.05) among the treatments for: pH, DO, hardness and alkalinity. Regarding the growth variables, significant differences (p <0.05) were observed, with higher MAD, Y and SGR values for the 10:1 treatment (3,433 ± 267 ind L-1, 245 ± 19 ind L-1 day- 1 and 45.3 ± 0.6% day-1, respectively) and lower for the 20:1 (1,011 ± 283 ind L-1, 55 ± 15 ind L-1 day-1 and 28.3 ± 1.6% day-1, respectively). The MDD occurred on day 12 for the 10:1 treatment and on day 18 for the 15:1 and 20:1 treatments. Alkalinity and hardness had stronger influence on the growth variables, which was also indicated by the simple linear regression. The principal component analysis (PCA), with 80% of explanation, identified high values of SGR, density and Y for the 10:1 and high values of alkalinity, hardness, DT and NO2 for the 20:1. Thus, the use of effluent from Tilapia farming in a biofloc system with a C:N ratio of 10:1 provided better production results for D. magna, demonstrating that it is an option for the production of live feed for aquaculture. |
| format | Article |
| id | doaj-art-534ee606c3024311a32af9c9022fa8bb |
| institution | DOAJ |
| issn | 1678-2305 |
| language | English |
| publishDate | 2019-09-01 |
| publisher | Instituto de Pesca |
| record_format | Article |
| series | Boletim do Instituto de Pesca |
| spelling | doaj-art-534ee606c3024311a32af9c9022fa8bb2025-08-20T03:18:06ZengInstituto de PescaBoletim do Instituto de Pesca1678-23052019-09-014531910.20950/1678-2305.2019.45.3.463EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATERGéssica Cavalcanti Pereira MOTA0Clarissa Vilela Figueiredo da Silva CAMPOS1Laenne Barbara Silva de MORAES2David Nunes Aguiar BRUZACA3Luís Otávio BRITO4Alfredo Olivera GÁLVEZ5Universidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Laboratório de Produção de Alimento VivoUniversidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Laboratório de Produção de Alimento VivoUniversidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Laboratório de Produção de Alimento VivoUniversidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Laboratório de Produção de Alimento VivoUniversidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Laboratório de Carcinicultura Universidade Federal Rural de Pernambuco - UFRPE, Departamento de Pesca e Aquicultura, Laboratório de Produção de Alimento VivoThe purpose of this study was to produce Daphnia magna in wastewater from Tilapia farmed in a biofloc system, to evaluate three different carbohydrate:nitrogen ratios. The experiment was conducted for 30 days following a completely randomized experimental design, with the three treatments: C:N 10:1, C:N 15:1 and C:N 20:1, all fed with Chlorella vulgaris. The physical-chemical variables of the water analyzed were: temperature, dissolved oxygen (DO), pH, TAN, NO2 , hardness and alkalinity. The following growth variables of the Daphnia were also evaluated: Maximum average density (MAD), Maximum density day (MDD), Specific growth rate (SGR), Doubling time (DT) and yield (Y). The water quality variables remained in the range of ideal conditions for the species, presenting significant differences (p <0.05) among the treatments for: pH, DO, hardness and alkalinity. Regarding the growth variables, significant differences (p <0.05) were observed, with higher MAD, Y and SGR values for the 10:1 treatment (3,433 ± 267 ind L-1, 245 ± 19 ind L-1 day- 1 and 45.3 ± 0.6% day-1, respectively) and lower for the 20:1 (1,011 ± 283 ind L-1, 55 ± 15 ind L-1 day-1 and 28.3 ± 1.6% day-1, respectively). The MDD occurred on day 12 for the 10:1 treatment and on day 18 for the 15:1 and 20:1 treatments. Alkalinity and hardness had stronger influence on the growth variables, which was also indicated by the simple linear regression. The principal component analysis (PCA), with 80% of explanation, identified high values of SGR, density and Y for the 10:1 and high values of alkalinity, hardness, DT and NO2 for the 20:1. Thus, the use of effluent from Tilapia farming in a biofloc system with a C:N ratio of 10:1 provided better production results for D. magna, demonstrating that it is an option for the production of live feed for aquaculture.https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1444/1395cladocerabiorremediationbioflocmicroalgae |
| spellingShingle | Géssica Cavalcanti Pereira MOTA Clarissa Vilela Figueiredo da Silva CAMPOS Laenne Barbara Silva de MORAES David Nunes Aguiar BRUZACA Luís Otávio BRITO Alfredo Olivera GÁLVEZ EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER Boletim do Instituto de Pesca cladocera biorremediation biofloc microalgae |
| title | EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER |
| title_full | EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER |
| title_fullStr | EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER |
| title_full_unstemmed | EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER |
| title_short | EFFECT OF THE C:N RATIO ON Daphnia magna (Straus, 1820) PRODUCTION USING TILAPIA FARMING WASTEWATER |
| title_sort | effect of the c n ratio on daphnia magna straus 1820 production using tilapia farming wastewater |
| topic | cladocera biorremediation biofloc microalgae |
| url | https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1444/1395 |
| work_keys_str_mv | AT gessicacavalcantipereiramota effectofthecnratioondaphniamagnastraus1820productionusingtilapiafarmingwastewater AT clarissavilelafigueiredodasilvacampos effectofthecnratioondaphniamagnastraus1820productionusingtilapiafarmingwastewater AT laennebarbarasilvademoraes effectofthecnratioondaphniamagnastraus1820productionusingtilapiafarmingwastewater AT davidnunesaguiarbruzaca effectofthecnratioondaphniamagnastraus1820productionusingtilapiafarmingwastewater AT luisotaviobrito effectofthecnratioondaphniamagnastraus1820productionusingtilapiafarmingwastewater AT alfredooliveragalvez effectofthecnratioondaphniamagnastraus1820productionusingtilapiafarmingwastewater |