Feeding behaviour and daily ration of the spotted flounder <i>Citharus linguatula</i> (Osteichthyes: Pleuronectiformes) in the central Tyrrhenian Sea

Paolo Carpentieri; Tiziana Cantarelli; Francesco Colloca; Alessandro Criscoli; Giandomenico Ardizzone

doi:10.3989/scimar.2010.74n4659

Autores/as

Paolo Carpentieri Animal and Human Biology Department, University of Rome “La Sapienza”
Tiziana Cantarelli Animal and Human Biology Department, University of Rome “La Sapienza”
Francesco Colloca Animal and Human Biology Department, University of Rome “La Sapienza”
Alessandro Criscoli Animal and Human Biology Department, University of Rome “La Sapienza”
Giandomenico Ardizzone Animal and Human Biology Department, University of Rome “La Sapienza”

DOI:

https://doi.org/10.3989/scimar.2010.74n4659

Palabras clave:

solleta, alimentación, Mediterráneo, desarrollo ontogénico, Pleuronectiformes

Resumen

La solleta, Citharus linguatula, es una de las especies más abundantes entre las comunidades de peces de la plataforma continental (hasta los 200 m de profundidad) del Mediterráneo. A pesar de su importancia ecológica en el mar Tirreno central, muchos aspectos de la biología de C. linguatula (e.g. alimentación) continúan siendo desconocidos. Con el objetivo de investigar cómo los hábitos alimenticios están relacionados con los cambios ontogénicos en esta especie, se analizaron 2636 individuos, entre 9 y 26 cm de longitud total (LT), que fueron muestreados entre noviembre de 2000 y enero de 2002. Durante el desarrollo ontogénico C. linguatula ocupa diferentes niveles tróficos: la alimentación varía desde los misidáceos, que son predominantes para las solletas más pequeñas ( < 11 cm LT), hasta los peces, que son la presa más importante para los individuos de mayor talla ( > 19 cm LT). Antes de llegar a la fase piscívora, el régimen alimenticio es más generalista, incluyendo crustáceos decápodos (Processa sp., Alpheus glaber), moluscos (Turitella sp.) y peces bentónicos (Lesueurigobius spp., Gobius niger, Callionymus spp., Arnoglossus laterna). Los análisis estacionales de la dieta muestran un aumento de la presencia de misidáceos en verano y otoño, y un aumento de decápodos en verano y primavera. Los teleósteos están presentes todo el año sin ninguna variación significativa. Las valores de la tasa diaria de alimentación, calculados con el método de Eggers, variaron entre 1.57% y 2.83% del peso húmedo individual, con una relación negativa entre la reproducción y el consumo diario.

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