Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires

Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires

The objective of the present work was to determine the age that reaches Cheirodon interruptus (Jenyns, 1842) in the Sauce Grande river basin, and to estimate its growth parameters. Sampling was performed seasonally by electrofishing, in three sites along the main river. A total of 164 individuals were caught, and total length (TL, mm) and weight (W, g) were recorded. The age was determined over a sub-sample of 154 fish, by means of scale reading. The growth parameters of von Bertalanffy’s equation were estimated using Least Squares method. Fish size ranged between 29 - 62 mm, with a mean of 44.73 mm (± 7.46). Mean TL by season was 38.17 mm (± 5.47) in summer, 43.25 mm (± 9.00) in autumn, 45.00 mm (± 5.10) in winter and 47.73 mm (± 6.45) in spring. Length-weight relationship for the total population was W = 6 x 10 -5 TL 2.61 (R 2 = 0.88). One annulus formation occurred yearly, at the end of autumn, assigning one year to each mark. Three age classes were determined (0 – 2), being age 0 the most abundant (84 %). The growth parameters for the total population were : L∞ = 57.63 mm; k = 0.69 y t 0 = -1.72.

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Main Authors: López Cazorla, Andrea, Sidorkewicj, N. S., Forte, Silvina
Format: Digital revista
Language:spa
Published: Instituto de Limnología "Raúl A. Ringuelet", Facultad de Ciencias Naturales y Museo (UNLP) 2005
Online Access:https://revistas.unlp.edu.ar/bacuatica/article/view/6815
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spelling rev-bacuatica-ar-article-68152021-09-09T16:32:05Z Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires López Cazorla, Andrea Sidorkewicj, N. S. Forte, Silvina Cheirodon interruptus edad peces crecimiento Argentina río Sauce Grande Cheirodon interruptus age fish growth Argentina Sauce Grande river The objective of the present work was to determine the age that reaches Cheirodon interruptus (Jenyns, 1842) in the Sauce Grande river basin, and to estimate its growth parameters. Sampling was performed seasonally by electrofishing, in three sites along the main river. A total of 164 individuals were caught, and total length (TL, mm) and weight (W, g) were recorded. The age was determined over a sub-sample of 154 fish, by means of scale reading. The growth parameters of von Bertalanffy’s equation were estimated using Least Squares method. Fish size ranged between 29 - 62 mm, with a mean of 44.73 mm (± 7.46). Mean TL by season was 38.17 mm (± 5.47) in summer, 43.25 mm (± 9.00) in autumn, 45.00 mm (± 5.10) in winter and 47.73 mm (± 6.45) in spring. Length-weight relationship for the total population was W = 6 x 10 -5 TL 2.61 (R 2 = 0.88). One annulus formation occurred yearly, at the end of autumn, assigning one year to each mark. Three age classes were determined (0 – 2), being age 0 the most abundant (84 %). The growth parameters for the total population were : L∞ = 57.63 mm; k = 0.69 y t 0 = -1.72. The objective of the present work was to determine the age that reaches Cheirodon interruptus (Jenyns, 1842) in the Sauce Grande river basin, and to estimate its growth parameters. Sampling was performed seasonally by electrofishing, in three sites along the main river. A total of 164 individuals were caught, and total length (TL, mm) and weight (W, g) were recorded. The age was determined over a sub-sample of 154 fish, by means of scale reading. The growth parameters of von Bertalanffy’s equation were estimated using Least Squares method. Fish size ranged between 29 - 62 mm, with a mean of 44.73 mm (± 7.46). Mean TL by season was 38.17 mm (± 5.47) in summer, 43.25 mm (± 9.00) in autumn, 45.00 mm (± 5.10) in winter and 47.73 mm (± 6.45) in spring. Length-weight relationship for the total population was W = 6 x 10 -5 TL 2.61 (R 2 = 0.88). One annulus formation occurred yearly, at the end of autumn, assigning one year to each mark. Three age classes were determined (0 – 2), being age 0 the most abundant (84 %). The growth parameters for the total population were : L∞ = 57.63 mm; k = 0.69 y t 0 = -1.72. Instituto de Limnología "Raúl A. Ringuelet", Facultad de Ciencias Naturales y Museo (UNLP) 2005-11-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unlp.edu.ar/bacuatica/article/view/6815 Biología Acuática; Núm. 22 (2005): Trabajos completos del III Congreso de Ecología y Manejo de Ecosistemas Acuáticos Pampeanos (EMEAP); 189-196 Biología Acuática; No. 22 (2005): Trabajos completos del III Congreso de Ecología y Manejo de Ecosistemas Acuáticos Pampeanos (EMEAP); 189-196 Biología Acuática; No. 22 (2005): Trabajos completos del III Congreso de Ecología y Manejo de Ecosistemas Acuáticos Pampeanos (EMEAP); 189-196 Biología Acuática; n. 22 (2005): Trabajos completos del III Congreso de Ecología y Manejo de Ecosistemas Acuáticos Pampeanos (EMEAP); 189-196 1668-4869 spa https://revistas.unlp.edu.ar/bacuatica/article/view/6815/6059
institution UNLP AR
collection OJS
country Argentina
countrycode AR
component Revista
access En linea
databasecode rev-bacuatica-ar
tag revista
region America del Sur
libraryname Biblioteca de la Facultad de Ciencias Naturales y Museo de la UNLP Argentina
language spa
format Digital
author López Cazorla, Andrea
Sidorkewicj, N. S.
Forte, Silvina
spellingShingle López Cazorla, Andrea
Sidorkewicj, N. S.
Forte, Silvina
Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires
author_facet López Cazorla, Andrea
Sidorkewicj, N. S.
Forte, Silvina
author_sort López Cazorla, Andrea
title Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires
title_short Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires
title_full Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires
title_fullStr Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires
title_full_unstemmed Edad y crecimiento de Cheirodon interruptus (Characiformes: Tetragonopteridae) en la cuenca alta del río Sauce Grande, provincia de Buenos Aires
title_sort edad y crecimiento de cheirodon interruptus (characiformes: tetragonopteridae) en la cuenca alta del río sauce grande, provincia de buenos aires
description The objective of the present work was to determine the age that reaches Cheirodon interruptus (Jenyns, 1842) in the Sauce Grande river basin, and to estimate its growth parameters. Sampling was performed seasonally by electrofishing, in three sites along the main river. A total of 164 individuals were caught, and total length (TL, mm) and weight (W, g) were recorded. The age was determined over a sub-sample of 154 fish, by means of scale reading. The growth parameters of von Bertalanffy’s equation were estimated using Least Squares method. Fish size ranged between 29 - 62 mm, with a mean of 44.73 mm (± 7.46). Mean TL by season was 38.17 mm (± 5.47) in summer, 43.25 mm (± 9.00) in autumn, 45.00 mm (± 5.10) in winter and 47.73 mm (± 6.45) in spring. Length-weight relationship for the total population was W = 6 x 10 -5 TL 2.61 (R 2 = 0.88). One annulus formation occurred yearly, at the end of autumn, assigning one year to each mark. Three age classes were determined (0 – 2), being age 0 the most abundant (84 %). The growth parameters for the total population were : L∞ = 57.63 mm; k = 0.69 y t 0 = -1.72.
publisher Instituto de Limnología "Raúl A. Ringuelet", Facultad de Ciencias Naturales y Museo (UNLP)
publishDate 2005
url https://revistas.unlp.edu.ar/bacuatica/article/view/6815
work_keys_str_mv AT lopezcazorlaandrea edadycrecimientodecheirodoninterruptuscharaciformestetragonopteridaeenlacuencaaltadelriosaucegrandeprovinciadebuenosaires
AT sidorkewicjns edadycrecimientodecheirodoninterruptuscharaciformestetragonopteridaeenlacuencaaltadelriosaucegrandeprovinciadebuenosaires
AT fortesilvina edadycrecimientodecheirodoninterruptuscharaciformestetragonopteridaeenlacuencaaltadelriosaucegrandeprovinciadebuenosaires
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