Izvorni znanstveni članak
REPRODUCTION CYCLE OF THE Chlamys varia L. AND LARVAE MONITORING OF THE Pectinidae IN PLANKTON OF THE MOUTH OF THE RIVER KRKA
Drago Marguš
; Institut "Ruđer Bošković", Centar za istraživanje mora Zagreb, Laboratorij za istraživanje i razvoj akvakulture, Bijenička 54, Zagreb, Hrvatska
Emin Teskeredžić
; Institut "Ruđer Bošković", Centar za istraživanje mora Zagreb, Laboratorij za istraživanje i razvoj akvakulture, Bijenička 54, Zagreb, Hrvatska
Zlatica Teskeredžić
; Institut "Ruđer Bošković", Centar za istraživanje mora Zagreb, Laboratorij za istraživanje i razvoj akvakulture, Bijenička 54, Zagreb, Hrvatska
Marija Tomec
; Institut "Ruđer Bošković", Centar za istraživanje mora Zagreb, Laboratorij za istraživanje i razvoj akvakulture, Bijenička 54, Zagreb, Hrvatska
Sažetak
The development of aquaculture and the rich population of Chlamys varia L. Š Pectinidae in the mouth of the river Krka prompted investigations carried out on the condition indexes and the occurrence and distribution of larvae in the plankton of the rivers mouth, to find out more about its reproductive cycle and to determine the possibility to collect young for use in controlled culture. Results of the investigations showed that spawing of the Chlamys varia L. is of a dual type, with a primary maximum in spring and a secondary maximum in autumn. The most intensive occurrence of the larvae Pectinidae in plankton was recorded in temperatures of from 18 to 20 ºC and at a salinity of above 30 x 10-3. The optimal time for collecting young Chlamys varia L. in the mouth of the river Krka, for use in controlled culture, is the period between June and September, and the most satisfactory depth for placing the collectors is at a depth beetwen 10 and 15 m.
Ključne riječi
Hrčak ID:
70478
URI
Datum izdavanja:
30.12.1993.
Posjeta: 866 *