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Body size, sexual maturity and diet in Chelidonichthys lucerna (Osteichthyes: Triglidae) from the Adriatic Sea, north eastern Mediterranean

Authors :
Maria VALLISNERI
Marco STAGIONI
Stefano MONTANINI
Stefano TOMMASINI
Source :
Acta Adriatica, Volume 52, Issue 1
Publication Year :
2011
Publisher :
Institute of Oceanography and Fisheries, 2011.

Abstract

A total of 1,114 tub gurnard (Chelidonichthys lucerna l., 1758) were caught by trawl surveys carried out between May 2005 and March 2007 in the Adriatic Sea (north eastern Mediterranean). Females ranged from 113 to 415 mm TL and males from 128 to 299 mm TL. At 50% maturity, females matured at a fork length of 270 mm, while males matured at 220 mm. The tub gurnards prey mainly crustaceans and fishes. Molluscs are also consumed. A length around 180 mm is a critical size that coincides with the slope to great depths, the migration along the Italian coast towards the Croatian coast, the start of sexual maturity and the change of their main food, from crustaceans to fish.<br />Uhvaćeno je ukupno 1.114 primjeraka lastavice balavice (Chelidonichthys lucerna L., 1758) tijekom kočarenja provedenih između svibnja 2005. i ožujka 2007. u Jadranskom moru (sjeverno istočni Mediteran). Veličina ženki je bila u rasponu od 13 do 415 mm ukupne duljine (TL ), dok je ukupna veličina mužjaka iznosila od 128 do 299 mm (TL ). Dužina pri kojoj 50% populacije dosiže spolnu zrelost, kod ženki iznosi 270 mm, a kod mužjaka 220 mm. Plijen lastavice se pretežito sastoji od rakova i riba. Također su konzumirani i mekušci. Dužina jedinki od oko 180 mm jest kritična u tom smislu jer se podudara sa prelaskom jedinki na život u većim dubinama, početkom migracije uzduž talijanske obale pa prema hrvatskoj obali, početkom spolne zrelosti te sa promjenom u njihovoj glavnoj hrani koja prelazi sa rakova na ribe.

Details

Language :
English
ISSN :
18460453 and 00015113
Volume :
52
Issue :
1
Database :
OpenAIRE
Journal :
Acta Adriatica
Accession number :
edsair.od.......951..bc2b606fc8e4c86b0dee2c0f5688b064