Morphometric analysis and body indexes of the catfish (Eremophilus mutisii) ; Análisis morfométrico e índices corporales del capitán de la sabana (Eremophilus mutisii)
With the aim of characterizing the morphometry and body indexes of Eremophilus mutisii,thirty-three fishes (27 females and 6 males) coming from the Bogotá river, specifically of theSuesca region, were used. The aspect ratio of the caudal fin was determined with the aid of theimage analysis software ImageJ®. Gonadosomatic and hepatosomatic indexes and carcass yieldwere determined for each fish. Correlation, regression and multivariate (canonical discriminantanalysis) techniques were used for data analysis. Results indicated that sex does not affect thebody shape of the fishes. The relationship... Mehr ...
Verfasser: | |
---|---|
Dokumenttyp: | Artikel |
Erscheinungsdatum: | 2019 |
Verlag/Hrsg.: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Medicina Veterinaria y de Zootecnia
|
Schlagwörter: | sexual dimorphism / Endemic species / vulnerable species / gonadosomatic index / carcass yield / Animal production / dimorfismo sexual / especies endémicas / especie vulnerable / índice gonadosomático / rendimiento de la canal / Producción animal |
Sprache: | Spanish |
Permalink: | https://search.fid-benelux.de/Record/base-27653282 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | https://revistas.unal.edu.co/index.php/remevez/article/view/82433 |
With the aim of characterizing the morphometry and body indexes of Eremophilus mutisii,thirty-three fishes (27 females and 6 males) coming from the Bogotá river, specifically of theSuesca region, were used. The aspect ratio of the caudal fin was determined with the aid of theimage analysis software ImageJ®. Gonadosomatic and hepatosomatic indexes and carcass yieldwere determined for each fish. Correlation, regression and multivariate (canonical discriminantanalysis) techniques were used for data analysis. Results indicated that sex does not affect thebody shape of the fishes. The relationship between length and weight was fitted for each sex.The average aspect ratio of the caudal fin was 1.57, which suggests that the species has sedentary habits or slow swimming. The gonadosomatic index of the maturing females (mean: 14.43 %; range: 8.84 % to 23.22 %) increased as a function of body weight and was greater than in males (mean: 5.32 %; range: 2.31 % to 8.29 %). Therefore, the carcass yield was lower in maturing females than in males. The mean of the hepatosomatic index for females was 0.86 % (range: 0.43 % to 1.88 %) and for males was 0.63 % (range: 0.39 % to 1.09 %). As a conclusion, Eremophilus mutisii is a sedentary fish species, and females exhibit greater gonadosomatic index and lower carcass yield than males. ; Con el objetivo de caracterizar la morfometría e índices corporales de Eremophilus mutisii, se usaron treinta y tres peces (27 hembras y 6 machos) provenientes del río Bogotá, específicamente de la región de Suesca. La relación de aspecto de la aleta caudal se determinó mediante el software de análisis de imágenes ImageJ®. Se calculó el índice gonadosomático, hepatosomático y rendimiento en canal para cada pez. Para el análisis de los datos se usaron correlaciones, regresiones y técnicas de análisis multivariado (análisis discriminante canónico). Como resultado del estudio se encontró que el sexo no afecta la forma del cuerpo de los peces. La relación entre la longitud y el peso se ajustó para cada ...