Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem
ABSTRACT Alterations in natural landscapes, mainly caused by anthropic pressures, have been threatening the world’s biomes, including aquatic environments and its biota. This study describes the diet of Bryconamericus iheringii, and how its body shape relates to environmental variables in population...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2018-10-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400202&lng=en&tlng=en |
| _version_ | 1818146770515918848 |
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| author | Érika Endo Kokubun Karine Orlandi Bonato Edward D. Burress Clarice Bernhardt Fialho |
| author_facet | Érika Endo Kokubun Karine Orlandi Bonato Edward D. Burress Clarice Bernhardt Fialho |
| author_sort | Érika Endo Kokubun |
| collection | DOAJ |
| description | ABSTRACT Alterations in natural landscapes, mainly caused by anthropic pressures, have been threatening the world’s biomes, including aquatic environments and its biota. This study describes the diet of Bryconamericus iheringii, and how its body shape relates to environmental variables in populations of 22 streams. A wide array of food items were found, mainly composed of allochthonous plants (50.5%) and autochthonous invertebrates (25.2%). Even though food items remained almost the same, the predominant food group significantly differed among streams, mainly in relation to environmental characteristics. There was variation in body shape primarily associated with body depth and length of the pre-dorsal region; however, these differences did not correspond with streams. PLS-CA analyses indicated that environmental characteristics, such as substrate type, percentage of marginal vegetation have some influence over food items availability but not on body shape. This may be because B. iheringii is a non-specialist species capable of prey switching based on availability due to an intermediate body shape suited for generalist feeding habits. |
| first_indexed | 2024-12-11T12:24:38Z |
| format | Article |
| id | doaj.art-b0c7dac1fe704d0f99d13a60e483dad4 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-11T12:24:38Z |
| publishDate | 2018-10-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-b0c7dac1fe704d0f99d13a60e483dad42022-12-22T01:07:26ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242018-10-0116410.1590/1982-0224-20170167S1679-62252018000400202Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystemÉrika Endo KokubunKarine Orlandi BonatoEdward D. BurressClarice Bernhardt FialhoABSTRACT Alterations in natural landscapes, mainly caused by anthropic pressures, have been threatening the world’s biomes, including aquatic environments and its biota. This study describes the diet of Bryconamericus iheringii, and how its body shape relates to environmental variables in populations of 22 streams. A wide array of food items were found, mainly composed of allochthonous plants (50.5%) and autochthonous invertebrates (25.2%). Even though food items remained almost the same, the predominant food group significantly differed among streams, mainly in relation to environmental characteristics. There was variation in body shape primarily associated with body depth and length of the pre-dorsal region; however, these differences did not correspond with streams. PLS-CA analyses indicated that environmental characteristics, such as substrate type, percentage of marginal vegetation have some influence over food items availability but not on body shape. This may be because B. iheringii is a non-specialist species capable of prey switching based on availability due to an intermediate body shape suited for generalist feeding habits.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400202&lng=en&tlng=enDieta generalistaEcomorfologiaEcossistema de pastagemRiachos |
| spellingShingle | Érika Endo Kokubun Karine Orlandi Bonato Edward D. Burress Clarice Bernhardt Fialho Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem Neotropical Ichthyology Dieta generalista Ecomorfologia Ecossistema de pastagem Riachos |
| title | Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem |
| title_full | Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem |
| title_fullStr | Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem |
| title_full_unstemmed | Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem |
| title_short | Diet and body shape among populations of Bryconamericus iheringii (Otophysi: Characidae) across the Campos Sulinos ecosystem |
| title_sort | diet and body shape among populations of bryconamericus iheringii otophysi characidae across the campos sulinos ecosystem |
| topic | Dieta generalista Ecomorfologia Ecossistema de pastagem Riachos |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400202&lng=en&tlng=en |
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