Naslov
Embryonic and larval development of the brown wrasse Labrus merula (Pisces: Labridae)

Autori
Dulčić, Jakov ; Kožul, Valter ; Kraljević, Miro ; Skaramuca, Boško ; Glamuzina, Branko ; Re, Pedro

Izvornik
Journal of the Marine Biological Association of the United Kingdom (0025-3154) 79 (1999), 2; 327-332

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
embryo; larva; development; brown wrasse

Sažetak
In March 1997 one male and one female brown wrasse spawned spontaneously in aquaria conditions. Eggs were incubated at ambinet temperature, salinity, oxygen and pH. The developmnet of the eggs, yolk-sac larvae and larvae is described and illustrated with particular emphasis on features of practical value for identification of specimens from plankton. The ripe egg of brown wrasse is a typical labrid egg with a mean diameter of 0.93 mm. The incubation period was 106 h 45 min at a mean temperature of 14.3C. Newly hatched yolk-sac larvae were 3.8 mm, while the yolk-sac was resorbed when larvae reached 4.68 mm in total length. Some characteristics which may be useful for identification are described and compared with some labrid yolk-sac larvae and larvae. The length of newly hatched yolk-sac larvae of brown wrasse was significantly larger (t-test, P<0.05) than those of other labrid species, but it is similar to that of Labrus berglyta. During the first 16d (after resorption of yolk-sac) brown wrasse larvae does not possess a double crsecent of melanophores on top of the head, but has a few melanophores on the anal fin which is very similar to the pigmentation of Symphodus melops larvae, although there is a difference in length between them. Larvae older than 16 d have a double crescent of melanophores on the top of the head with melanophores on the anal fin-fold identical to L. berglyta larvae, but the difference in larvae length also exists.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA