Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia
The present study describes ecological aspects of Lebiasina erythrinoides; 200 individuals were sampled throughout an annual hydrological cycle from October 2008 to September 2009 in La Calaboza stream, a Piedmont tributary of the Rio Cravo Sur. The studied population had more females than males (1....
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Pontificia Universidad Javeriana
2016-03-01
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| Online Access: | http://revistas.javeriana.edu.co/index.php/scientarium/article/view/13202 |
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| author | Javier Alejandro Maldonado Ocampo Alexander Urbano Bonilla Jhon Zamudio |
| author_facet | Javier Alejandro Maldonado Ocampo Alexander Urbano Bonilla Jhon Zamudio |
| author_sort | Javier Alejandro Maldonado Ocampo |
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| description | The present study describes ecological aspects of Lebiasina erythrinoides; 200 individuals were sampled throughout an annual hydrological cycle from October 2008 to September 2009 in La Calaboza stream, a Piedmont tributary of the Rio Cravo Sur. The studied population had more females than males (1.5:1) and preferred habitats dominated by shoreline vegetation and rocky substrates. Prior to reproductive events, individuals presented an increase in the condition factor (K) and the gonosomatic index (GSI). On average, 648.8 oocytes are discharged twice a year: at the beginning of the rainy season, and during falling water phase. The mean sizes at sexual maturity found for females were 73.5 mm standard length (SL) and for males 70 mm SL. Rounding up, an average minimum size of capture of 75 mm SL is proposed. Most specimens of the population (65 %) were found to be maturing or mature (stages II and III), 28.5 % immature (stage I), 5.0 % in post reproduction stage V, and 1.5 % in reproductive phase (IV). Results suggest this species is omnivorous with a preference for invertebrates (IRI = 41.2 %) and vegetal material (IRI = 27.8 %), but also includes a variety of other items. The values of the diet are correlated with hydrological cycle and size. |
| format | Article |
| id | doaj-art-04468fb21e0540f4b83b73fd32ece966 |
| institution | OA Journals |
| issn | 0122-7483 2027-1352 |
| language | English |
| publishDate | 2016-03-01 |
| publisher | Pontificia Universidad Javeriana |
| record_format | Article |
| series | Universitas Scientiarum |
| spelling | doaj-art-04468fb21e0540f4b83b73fd32ece9662025-08-20T02:03:07ZengPontificia Universidad JaverianaUniversitas Scientiarum0122-74832027-13522016-03-01211839710.11144/Javeriana.SC21-1.eaolEcological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in ColombiaJavier Alejandro Maldonado Ocampo0Alexander Urbano Bonilla1Jhon Zamudio2 Laboratorio de Ictiología, Unidad de Ecología y Sistemática (UNESIS), Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 N° 43-82, Bogotá D.C., Colombia. Laboratorio de Ictiología, Unidad de Ecología y Sistemática (UNESIS), Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 N° 43-82, Bogotá D.C., Colombia. Laboratorio de Ictiología, Unidad de Ecología y Sistemática (UNESIS), Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 N° 43-82, Bogotá D.C., Colombia.The present study describes ecological aspects of Lebiasina erythrinoides; 200 individuals were sampled throughout an annual hydrological cycle from October 2008 to September 2009 in La Calaboza stream, a Piedmont tributary of the Rio Cravo Sur. The studied population had more females than males (1.5:1) and preferred habitats dominated by shoreline vegetation and rocky substrates. Prior to reproductive events, individuals presented an increase in the condition factor (K) and the gonosomatic index (GSI). On average, 648.8 oocytes are discharged twice a year: at the beginning of the rainy season, and during falling water phase. The mean sizes at sexual maturity found for females were 73.5 mm standard length (SL) and for males 70 mm SL. Rounding up, an average minimum size of capture of 75 mm SL is proposed. Most specimens of the population (65 %) were found to be maturing or mature (stages II and III), 28.5 % immature (stage I), 5.0 % in post reproduction stage V, and 1.5 % in reproductive phase (IV). Results suggest this species is omnivorous with a preference for invertebrates (IRI = 41.2 %) and vegetal material (IRI = 27.8 %), but also includes a variety of other items. The values of the diet are correlated with hydrological cycle and size.http://revistas.javeriana.edu.co/index.php/scientarium/article/view/13202Lebiasininidietreproductionhydrological cycleOrinoco basin |
| spellingShingle | Javier Alejandro Maldonado Ocampo Alexander Urbano Bonilla Jhon Zamudio Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia Universitas Scientiarum Lebiasinini diet reproduction hydrological cycle Orinoco basin |
| title | Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia |
| title_full | Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia |
| title_fullStr | Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia |
| title_full_unstemmed | Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia |
| title_short | Ecological aspects of Lebiasina erythrinoides (Characiformes: Lebiasinidae) from an andean piedmont stream in Colombia |
| title_sort | ecological aspects of lebiasina erythrinoides characiformes lebiasinidae from an andean piedmont stream in colombia |
| topic | Lebiasinini diet reproduction hydrological cycle Orinoco basin |
| url | http://revistas.javeriana.edu.co/index.php/scientarium/article/view/13202 |
| work_keys_str_mv | AT javieralejandromaldonadoocampo ecologicalaspectsoflebiasinaerythrinoidescharaciformeslebiasinidaefromanandeanpiedmontstreamincolombia AT alexanderurbanobonilla ecologicalaspectsoflebiasinaerythrinoidescharaciformeslebiasinidaefromanandeanpiedmontstreamincolombia AT jhonzamudio ecologicalaspectsoflebiasinaerythrinoidescharaciformeslebiasinidaefromanandeanpiedmontstreamincolombia |