SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL
This study analysed the commercial fishing for peacock bass (Cichla spp.) and its variation according to the river regime and the fishing environments, based on landing data in Manaus. The landing data were provided by the Z-12 Fishermen's Association and the monthly quotas (m) of Rio Negro by...
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Instituto de Pesca
2020-12-01
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| Series: | Boletim do Instituto de Pesca |
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| Online Access: | https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1554/1475 |
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| author | Glenda Katherine de Souza DIAS Lucirene Aguiar de SOUZA Carlos Edwar de Carvalho FREITAS |
| author_facet | Glenda Katherine de Souza DIAS Lucirene Aguiar de SOUZA Carlos Edwar de Carvalho FREITAS |
| author_sort | Glenda Katherine de Souza DIAS |
| collection | DOAJ |
| description | This study analysed the commercial fishing for peacock bass (Cichla spp.) and its variation according to the river regime and the fishing environments, based on landing data in Manaus. The landing data were provided by the Z-12 Fishermen's Association and the monthly quotas (m) of Rio Negro by the National Water Agency, corresponding to the years 2012 and 2013. The Catch per Unit of Effort (CPUE) was obtained by dividing the total catch and the number of boats. A Generalized Linear Model was used to analyse the relationship between CPUE and the river level. Through the Analysis of Variance we compared the averages of capture between the fishing areas and Fisher's LSD test revealed which environments had different capture averages. Student's t-test was used to compare the mean of capture between white and black water environments. The largest catches and CPUEs occurred during receding water, and the relationship between CPUE and river level was inverse. Black water environments obtained the highest CPUEs, as well as the highest capture averages. There were differences in the average catches between fishing areas, but not between water types. This study shows how peacock bass exploitation occurs and can assist in management measures for this species. |
| format | Article |
| id | doaj-art-fc15a541e1f04a90b2ddf5934fc739c0 |
| institution | Kabale University |
| issn | 0046-9939 1678-2305 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Instituto de Pesca |
| record_format | Article |
| series | Boletim do Instituto de Pesca |
| spelling | doaj-art-fc15a541e1f04a90b2ddf5934fc739c02025-08-20T03:25:33ZengInstituto de PescaBoletim do Instituto de Pesca0046-99391678-23052020-12-014631910.20950/1678-2305.2020.46.3.595SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZILGlenda Katherine de Souza DIAS0https://orcid.org/0000-0003-0327-1685Lucirene Aguiar de SOUZA1https://orcid.org/0000-0001-5832-8023Carlos Edwar de Carvalho FREITAS2https://orcid.org/0000-0001-5406-0998Instituto Nacional de Pesquisas da Amazônia – INPA, Programa de Pós-graduação em Biologia de Água Doce e Pesca InteriorUniversidade Federal do Amazonas – UFAM, Faculdade de Ciências Agrárias, Departamento de Ciências PesqueirasUniversidade Federal do Amazonas – UFAM, Faculdade de Ciências Agrárias, Departamento de Ciências PesqueirasThis study analysed the commercial fishing for peacock bass (Cichla spp.) and its variation according to the river regime and the fishing environments, based on landing data in Manaus. The landing data were provided by the Z-12 Fishermen's Association and the monthly quotas (m) of Rio Negro by the National Water Agency, corresponding to the years 2012 and 2013. The Catch per Unit of Effort (CPUE) was obtained by dividing the total catch and the number of boats. A Generalized Linear Model was used to analyse the relationship between CPUE and the river level. Through the Analysis of Variance we compared the averages of capture between the fishing areas and Fisher's LSD test revealed which environments had different capture averages. Student's t-test was used to compare the mean of capture between white and black water environments. The largest catches and CPUEs occurred during receding water, and the relationship between CPUE and river level was inverse. Black water environments obtained the highest CPUEs, as well as the highest capture averages. There were differences in the average catches between fishing areas, but not between water types. This study shows how peacock bass exploitation occurs and can assist in management measures for this species.https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1554/1475fishing productionriver regimecpuefreshwater fishery |
| spellingShingle | Glenda Katherine de Souza DIAS Lucirene Aguiar de SOUZA Carlos Edwar de Carvalho FREITAS SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL Boletim do Instituto de Pesca fishing production river regime cpue freshwater fishery |
| title | SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL |
| title_full | SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL |
| title_fullStr | SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL |
| title_full_unstemmed | SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL |
| title_short | SPATIAL AND SEASONAL VARIATION OF PEACOCK BASS (Cichla spp.) FISHERY: AN ANALYSIS OF CATCHES LANDED IN MANAUS, AMAZONAS STATE, BRAZIL |
| title_sort | spatial and seasonal variation of peacock bass cichla spp fishery an analysis of catches landed in manaus amazonas state brazil |
| topic | fishing production river regime cpue freshwater fishery |
| url | https://www.pesca.sp.gov.br/boletim/index.php/bip/article/view/1554/1475 |
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