Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil
This article concerns an inventory of the ichthyofauna from the main channel of the mid-Tocantins River and studies on fisheries in this region including an evaluation of activities from Colônia de Pesca Z-35 of Estreito and Carolina in Tocantins and Maranhão States, Brazil, during 1999 and 2000. Th...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Instituto Internacional de Ecologia
|
| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842010000300014&lng=en&tlng=en |
| _version_ | 1818541797614288896 |
|---|---|
| author | JC. Garavello JP. Garavello AK. Oliveira |
| author_facet | JC. Garavello JP. Garavello AK. Oliveira |
| author_sort | JC. Garavello |
| collection | DOAJ |
| description | This article concerns an inventory of the ichthyofauna from the main channel of the mid-Tocantins River and studies on fisheries in this region including an evaluation of activities from Colônia de Pesca Z-35 of Estreito and Carolina in Tocantins and Maranhão States, Brazil, during 1999 and 2000. This study includes taxonomy and fishery data obtained from field collections and from interviews with the fishermen, carried out in March and July of 2001. The systematic record and fishery data were obtained from the most common species of the ichthyofauna of the mid-Tocantins River. A critical examination of fish resources from this area allows us to conclude that the large commercial species have decreased in number and are qualitatively reduced in that area of Tocantins. This fact may be a result of breaking the main channel of Tocantins, first by the hydroelectric power dam of Tucurui, twenty years ago, followed by the formation of the hydroelectric reservoirs of Lageado, Peixe Angical and Serra da Mesa, that transformed the main channel of Tocantins into a successive cascade of reservoirs. Those events may perhaps modify the profile of the fish community in that area. The obtained data also permit an examination of fisheries in the area, providing an appraisal on forthcoming problems that will be faced by fishermen of Colônia de Pesca Z-35. |
| first_indexed | 2024-12-11T22:13:53Z |
| format | Article |
| id | doaj.art-9526fc424a3d4d77a70387e5e681ac43 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-11T22:13:53Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-9526fc424a3d4d77a70387e5e681ac432022-12-22T00:48:41ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437570357558510.1590/S1519-69842010000300014S1519-69842010000300014Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, BrazilJC. Garavello0JP. Garavello1AK. Oliveira2Universidade Federal de São CarlosUniversidade Federal de São CarlosUniversidade Federal de São CarlosThis article concerns an inventory of the ichthyofauna from the main channel of the mid-Tocantins River and studies on fisheries in this region including an evaluation of activities from Colônia de Pesca Z-35 of Estreito and Carolina in Tocantins and Maranhão States, Brazil, during 1999 and 2000. This study includes taxonomy and fishery data obtained from field collections and from interviews with the fishermen, carried out in March and July of 2001. The systematic record and fishery data were obtained from the most common species of the ichthyofauna of the mid-Tocantins River. A critical examination of fish resources from this area allows us to conclude that the large commercial species have decreased in number and are qualitatively reduced in that area of Tocantins. This fact may be a result of breaking the main channel of Tocantins, first by the hydroelectric power dam of Tucurui, twenty years ago, followed by the formation of the hydroelectric reservoirs of Lageado, Peixe Angical and Serra da Mesa, that transformed the main channel of Tocantins into a successive cascade of reservoirs. Those events may perhaps modify the profile of the fish community in that area. The obtained data also permit an examination of fisheries in the area, providing an appraisal on forthcoming problems that will be faced by fishermen of Colônia de Pesca Z-35.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842010000300014&lng=en&tlng=enneotropicalfreshwater fishesfishery and fishermenTocantinsMaranhãoBrazil |
| spellingShingle | JC. Garavello JP. Garavello AK. Oliveira Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil Brazilian Journal of Biology neotropical freshwater fishes fishery and fishermen Tocantins Maranhão Brazil |
| title | Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil |
| title_full | Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil |
| title_fullStr | Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil |
| title_full_unstemmed | Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil |
| title_short | Ichthyofauna, fish supply and fishermen activities on the mid-Tocantins River, Maranhão State, Brazil |
| title_sort | ichthyofauna fish supply and fishermen activities on the mid tocantins river maranhao state brazil |
| topic | neotropical freshwater fishes fishery and fishermen Tocantins Maranhão Brazil |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842010000300014&lng=en&tlng=en |
| work_keys_str_mv | AT jcgaravello ichthyofaunafishsupplyandfishermenactivitiesonthemidtocantinsrivermaranhaostatebrazil AT jpgaravello ichthyofaunafishsupplyandfishermenactivitiesonthemidtocantinsrivermaranhaostatebrazil AT akoliveira ichthyofaunafishsupplyandfishermenactivitiesonthemidtocantinsrivermaranhaostatebrazil |