Diet and dental development of three species of Roeboides (Characiformes: Characidae)
Lepidophagy has been recorded in various species of Roeboides. In this study we analyzed ontogenetic variation in diet and dental development of three Roeboides species (R. paranensis, R. prognathus and R. microlepis). Roeboides paranensis consumed mainly insects, scales and microcrustaceans, and th...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
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| Series: | Neotropical Ichthyology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300008&lng=en&tlng=en |
| _version_ | 1818299087854764032 |
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| author | Gisele Caroline Novakowski Rosemara Fugi Norma Segatti Hahn |
| author_facet | Gisele Caroline Novakowski Rosemara Fugi Norma Segatti Hahn |
| author_sort | Gisele Caroline Novakowski |
| collection | DOAJ |
| description | Lepidophagy has been recorded in various species of Roeboides. In this study we analyzed ontogenetic variation in diet and dental development of three Roeboides species (R. paranensis, R. prognathus and R. microlepis). Roeboides paranensis consumed mainly insects, scales and microcrustaceans, and the smaller individuals (<3.4 cm - SL) consumed mostly insects. Scale were only consumed by individuals greater than 3.4 cm. Scales were the dominant item in the diet in all sizes of R. prognathus. The diet of R. microlepis was composed primarily of whole fishes, however, the smaller individuals (<5.4 cm) consumed only insects. During ontogeny, exterior migration of teeth in the mouth started at 3.7 cm in R. paranensis and 6.5 cm in R. microlepis. As body length increased more teeth migrated exteriorly. This leads to greater consumption of scales by three species. Roeboides prognathus appeared to be most specialized on scales, since they composed 80% of the diet, and was the species with the highest number of external teeth and the most developed. |
| first_indexed | 2024-12-13T04:45:39Z |
| format | Article |
| id | doaj.art-f80dd9f6ced9401a8f96484fe602cc42 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-13T04:45:39Z |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-f80dd9f6ced9401a8f96484fe602cc422022-12-21T23:59:09ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242315716210.1590/S1679-62252004000300008S1679-62252004000300008Diet and dental development of three species of Roeboides (Characiformes: Characidae)Gisele Caroline Novakowski0Rosemara Fugi1Norma Segatti Hahn2Universidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáLepidophagy has been recorded in various species of Roeboides. In this study we analyzed ontogenetic variation in diet and dental development of three Roeboides species (R. paranensis, R. prognathus and R. microlepis). Roeboides paranensis consumed mainly insects, scales and microcrustaceans, and the smaller individuals (<3.4 cm - SL) consumed mostly insects. Scale were only consumed by individuals greater than 3.4 cm. Scales were the dominant item in the diet in all sizes of R. prognathus. The diet of R. microlepis was composed primarily of whole fishes, however, the smaller individuals (<5.4 cm) consumed only insects. During ontogeny, exterior migration of teeth in the mouth started at 3.7 cm in R. paranensis and 6.5 cm in R. microlepis. As body length increased more teeth migrated exteriorly. This leads to greater consumption of scales by three species. Roeboides prognathus appeared to be most specialized on scales, since they composed 80% of the diet, and was the species with the highest number of external teeth and the most developed.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300008&lng=en&tlng=enRoeboideslepidophagyfreshwaterreservoir |
| spellingShingle | Gisele Caroline Novakowski Rosemara Fugi Norma Segatti Hahn Diet and dental development of three species of Roeboides (Characiformes: Characidae) Neotropical Ichthyology Roeboides lepidophagy freshwater reservoir |
| title | Diet and dental development of three species of Roeboides (Characiformes: Characidae) |
| title_full | Diet and dental development of three species of Roeboides (Characiformes: Characidae) |
| title_fullStr | Diet and dental development of three species of Roeboides (Characiformes: Characidae) |
| title_full_unstemmed | Diet and dental development of three species of Roeboides (Characiformes: Characidae) |
| title_short | Diet and dental development of three species of Roeboides (Characiformes: Characidae) |
| title_sort | diet and dental development of three species of roeboides characiformes characidae |
| topic | Roeboides lepidophagy freshwater reservoir |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300008&lng=en&tlng=en |
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