engleski

Embryonic and larval development of big-scale sand smelt Atherina boyeri (Atherinidae)

The embryonic and early larval development of the laboratory-reared sand smelt, Atherina boyeri are described. Mature unfertilized eggs were pelagic and spherical with a homogeneous and unsegmented yolk contained several oil droplets. Eggs were equiped with long hairy appendages. Fertilized eggs ranged in diameter from 1.58 to 2.05 mm, with a mean (± ; ; SD) of 1.75± ; ; 0.101 mm. Embryonic development lasted 211 h 32 min at a mean temeperature 19.20C. Newly hatched yolk-sac larvae measured 4.5 mm (± ; ; SD=0.15) total length in average (range 4.4-4.7 mm). The yolk was completely resorbed by the day 3 after hatching. Changes in length and shape of yolk-sac larvae and larvae during the first six days after hatching are also presented.

Atherinidae ; Atherina boyeri ; embryo ; larvae ; development

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