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- W1481588040 abstract "The reproduction of the native penaeid shrimp, Melicertus kerathurus (Forskal, 1775) was studied along the marine belt of the southeastern coast of Italy, between the cities of Termoli and Peschici, in an area covering approximately 100 km, down to the isobath of 35 m. Sampling was carried out periodically from June 2006 to September 2007, by experimental trawl survey. The results proved that the main reproductive period of Melicertus kerathurus spans from the end of May to about mid-August, with the main peak falling in June and July. The sex ratio (males/females) averaged 1.44 (± 0.61), with oscillations between 0.61 and 2.70. The size-at-maturity was estimated at 127.56 mm Total Length (CL = 31.42 mm) in males and 175.18 mm (CL = 45.56 mm) in females. The average gonadosomatic index varied in females at stage IV of ovarian maturity from 10.7% in June to 9.69% in July, with maximum values of 7.35% and 14.35% (± 1.99%). Relative fecundity averaged 79,143 (± 19,041) mature oocytes and the main absolute fecundity resulted in 322,102 (± 100,482). The average diameter of mature oocytes was determined to be 258.70 (± 57.49) μ m. E'stato studiato il ciclo riproduttivo del gambero peneide Melicertus kerathurus (Forskal, 1775) nelle acque del Mar Adriatico, sulla costa sud orientale italiana, lungo una fascia di circa 100 km, tra le citta di Termoli e Peschici, estendentesi al largo fino all'isobata di 35 m. Sono stati effettuati periodicamente campionamenti della popolazione del peneide dal giugno 2006 al settembre 2007, mediante reti a strascico. Lo studio ha evidenziato che la specie nell'area presa in considerazione ha un periodo riproduttivo che si estende circa dalla fine di maggio alla meta di agosto, con una fase di maggiore attivita nei mesi di giugno e luglio. Il rapporto sessi (maschi/femmine) e risultato mediamente di 1,44 (± 0,61), con fluttuazioni comprese tra 0,61 e 2,70. La lunghezza totale alla quale la specie si riproduce e risultata per i maschi di 127,56 mm (lunghezza del carapace = 31,42 mm) e per le femmine di 175,18 mm (lunghezza del carapace = 45,56 mm). L'indice gonadosomatico nelle femmine al IV stadio di maturita ovarica variava da 10,7% in giugno a 9,69% in luglio, con oscillazioni comprese tra 7,35% e 14,35% (± 1,99%). La fecondita relativa e risultata mediamente pari a 79.143 (± 19.041) ovociti maturi per grammo di ovario, mentre la fecondita assoluta era in media pari a 322.102 (± 100.482) ovociti maturi per riproduttrice. Il diametro medio degli ovociti maturi misurava 258,70 (± 57,49) μ m." @default.
- W1481588040 created "2016-06-24" @default.
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- W1481588040 date "2011-01-01" @default.
- W1481588040 modified "2023-09-26" @default.
- W1481588040 title "Reproduction of the Caramote Shrimp Melicertus Kerathurus (Decapoda, Penaeidae) in the South Adriatic Sea (south-eastern Coast of Italy)" @default.
- W1481588040 doi "https://doi.org/10.1163/001121611x555426" @default.
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