Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf
The feeding habits of five species of teleosts in the southern coast of Brazil were analyzed comparatively between estuary and continental shelf. The displacement between the two sites caused expressive qualitative alterations, the proportion of different items varying from 50% in the diet of Microp...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Instituto de Tecnologia do Paraná (Tecpar)
2003-01-01
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| Series: | Brazilian Archives of Biology and Technology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100007 |
| _version_ | 1818505678539456512 |
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| author | Paulo T. C. Chaves Simone C. Umbria |
| author_facet | Paulo T. C. Chaves Simone C. Umbria |
| author_sort | Paulo T. C. Chaves |
| collection | DOAJ |
| description | The feeding habits of five species of teleosts in the southern coast of Brazil were analyzed comparatively between estuary and continental shelf. The displacement between the two sites caused expressive qualitative alterations, the proportion of different items varying from 50% in the diet of Micropogonias furnieri to 89% in Isopisthus parvipinnis. In the group of species, 57% of the items were exclusive to one of the environments and, within the three most common items in the estuary - fish, Polychaeta and plants, only the former was also among the most common items in the shelf. In spite of these differences, the high spectrum of items in both environments and the nature of the item that was most consumed in each one, indicate that there was a certain similarity of patterns between estuary and shelf: Chloroscombrus chrysurus had a carnivorous diet, with a predominance of copepods; M. furnieri and Menticirrhus americanus showed a tendency towards an omnivorous diet; and Cynoscion leiarchus and I. parvipinnis showed a tendency towards ichthyophagy.<br>A alimentação de cinco espécies de teleósteos do litoral sul do Brasil foi analisada comparativamente entre estuário e plataforma continental. Constatou-se que o deslocamento entre os locais acarreta expressivas alterações qualitativas, a proporção de itens diferentes variando de 50% em Micropogonias furnieri a 89% em Isopisthus parvipinnis. No conjunto das espécies, 57% dos itens foram exclusivos de um ambiente ou de outro, e dentre os três mais comuns no estuário - peixes, Polychaeta e vegetais superiores, apenas o primeiro também esteve entre os mais comuns na plataforma. Apesar dessas diferenças, o grande espectro de itens em ambos os ambientes e a natureza daquele mais consumido em cada um indicam que há uma certa similaridade de padrões entre estuário e plataforma: em Chloroscombrus chrysurus, dieta carnívora, com predomínio de copépodos; em M. furnieri e Menticirrhus americanus, tendência à onivoria; e em Cynoscion leiarchus e I. parvipinnis, tendência à ictiofagia. |
| first_indexed | 2024-12-10T21:54:09Z |
| format | Article |
| id | doaj.art-baa513c27fe34c54b20bf69264a5a343 |
| institution | Directory Open Access Journal |
| issn | 1516-8913 1678-4324 |
| language | English |
| last_indexed | 2024-12-10T21:54:09Z |
| publishDate | 2003-01-01 |
| publisher | Instituto de Tecnologia do Paraná (Tecpar) |
| record_format | Article |
| series | Brazilian Archives of Biology and Technology |
| spelling | doaj.art-baa513c27fe34c54b20bf69264a5a3432022-12-22T01:32:06ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242003-01-01461414610.1590/S1516-89132003000100007Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelfPaulo T. C. ChavesSimone C. UmbriaThe feeding habits of five species of teleosts in the southern coast of Brazil were analyzed comparatively between estuary and continental shelf. The displacement between the two sites caused expressive qualitative alterations, the proportion of different items varying from 50% in the diet of Micropogonias furnieri to 89% in Isopisthus parvipinnis. In the group of species, 57% of the items were exclusive to one of the environments and, within the three most common items in the estuary - fish, Polychaeta and plants, only the former was also among the most common items in the shelf. In spite of these differences, the high spectrum of items in both environments and the nature of the item that was most consumed in each one, indicate that there was a certain similarity of patterns between estuary and shelf: Chloroscombrus chrysurus had a carnivorous diet, with a predominance of copepods; M. furnieri and Menticirrhus americanus showed a tendency towards an omnivorous diet; and Cynoscion leiarchus and I. parvipinnis showed a tendency towards ichthyophagy.<br>A alimentação de cinco espécies de teleósteos do litoral sul do Brasil foi analisada comparativamente entre estuário e plataforma continental. Constatou-se que o deslocamento entre os locais acarreta expressivas alterações qualitativas, a proporção de itens diferentes variando de 50% em Micropogonias furnieri a 89% em Isopisthus parvipinnis. No conjunto das espécies, 57% dos itens foram exclusivos de um ambiente ou de outro, e dentre os três mais comuns no estuário - peixes, Polychaeta e vegetais superiores, apenas o primeiro também esteve entre os mais comuns na plataforma. Apesar dessas diferenças, o grande espectro de itens em ambos os ambientes e a natureza daquele mais consumido em cada um indicam que há uma certa similaridade de padrões entre estuário e plataforma: em Chloroscombrus chrysurus, dieta carnívora, com predomínio de copépodos; em M. furnieri e Menticirrhus americanus, tendência à onivoria; e em Cynoscion leiarchus e I. parvipinnis, tendência à ictiofagia.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100007DietFishEstuaryContinental ShelfBrazil |
| spellingShingle | Paulo T. C. Chaves Simone C. Umbria Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf Brazilian Archives of Biology and Technology Diet Fish Estuary Continental Shelf Brazil |
| title | Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf |
| title_full | Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf |
| title_fullStr | Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf |
| title_full_unstemmed | Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf |
| title_short | Changes in the diet composition of transitory fishes in coastal systems, estuary and continental shelf |
| title_sort | changes in the diet composition of transitory fishes in coastal systems estuary and continental shelf |
| topic | Diet Fish Estuary Continental Shelf Brazil |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100007 |
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