Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil
With the purpose of determining the principal food resources responsible for maintaining the fishery yield in a section of the São Francisco River, 6 sampling of the fish fauna were made downstream from the Três Marias Dam, from September 1996 to July 1997. A total of 1,127 individuals of 35 species...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842004000200003&lng=en&tlng=en |
| _version_ | 1811263130841382912 |
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| author | M. C. C. Alvim A. C. Peret |
| author_facet | M. C. C. Alvim A. C. Peret |
| author_sort | M. C. C. Alvim |
| collection | DOAJ |
| description | With the purpose of determining the principal food resources responsible for maintaining the fishery yield in a section of the São Francisco River, 6 sampling of the fish fauna were made downstream from the Três Marias Dam, from September 1996 to July 1997. A total of 1,127 individuals of 35 species were captured, using gillnets with mesh sizes varying from 3 to 16 cm. The stomach contents of 33 species were examined in order to determine their diets. Five trophic guilds were established, in the following order of importance: ilyophagous, herbivorous, piscivorous, terrestrial invertebrates feeders, and aquatic invertebrates feeders. The resources sustaining the fish fauna were mainly of allochthonous origin. The ichthyonenosis appears to be mainly dependent on the detritus chain. The ciliary forest and seasonal flooding pulses are the main suppliers of food for the fish fauna. |
| first_indexed | 2024-04-12T19:39:10Z |
| format | Article |
| id | doaj.art-d309a13bbec0437dbe22dab3f57f86df |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-04-12T19:39:10Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-d309a13bbec0437dbe22dab3f57f86df2022-12-22T03:19:08ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437564219520210.1590/S1519-69842004000200003S1519-69842004000200003Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, BrazilM. C. C. Alvim0A. C. Peret1Universidade Federal de São CarlosUniversidade Federal de São CarlosWith the purpose of determining the principal food resources responsible for maintaining the fishery yield in a section of the São Francisco River, 6 sampling of the fish fauna were made downstream from the Três Marias Dam, from September 1996 to July 1997. A total of 1,127 individuals of 35 species were captured, using gillnets with mesh sizes varying from 3 to 16 cm. The stomach contents of 33 species were examined in order to determine their diets. Five trophic guilds were established, in the following order of importance: ilyophagous, herbivorous, piscivorous, terrestrial invertebrates feeders, and aquatic invertebrates feeders. The resources sustaining the fish fauna were mainly of allochthonous origin. The ichthyonenosis appears to be mainly dependent on the detritus chain. The ciliary forest and seasonal flooding pulses are the main suppliers of food for the fish fauna.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842004000200003&lng=en&tlng=entrophic ecology of fishesfeeding habitsresources partitioningSão Francisco River |
| spellingShingle | M. C. C. Alvim A. C. Peret Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil Brazilian Journal of Biology trophic ecology of fishes feeding habits resources partitioning São Francisco River |
| title | Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil |
| title_full | Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil |
| title_fullStr | Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil |
| title_full_unstemmed | Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil |
| title_short | Food resources sustaining the fish fauna in a section of the upper São Francisco River in Três Marias, MG, Brazil |
| title_sort | food resources sustaining the fish fauna in a section of the upper sao francisco river in tres marias mg brazil |
| topic | trophic ecology of fishes feeding habits resources partitioning São Francisco River |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842004000200003&lng=en&tlng=en |
| work_keys_str_mv | AT mccalvim foodresourcessustainingthefishfaunainasectionoftheuppersaofranciscoriverintresmariasmgbrazil AT acperet foodresourcessustainingthefishfaunainasectionoftheuppersaofranciscoriverintresmariasmgbrazil |