Brown alga Cystoseira sp. (a healthy
specimen)
Brown alga Cystoseira sp. (unhealthy
specimen, covered by filamentous algae)
Polychaete Janua pagenstecheri
Polychaete Spirobranchus tiqueter
Left: a fry of grey mullets (Mugil cephalus, Liza saliens), with air sac on the dorsal
side (Zaitsev 1963). Right: A flock of grey mullets, hatched from neustonic eggs in
the open sea, and without leawing the neustal, migrating to the costs in search of
feeding grounds in shallow water bays, lagoons, limans and estuaries. The species
diversity and the number of grey mullet fry, coming to the shores, is a good
biological indicator of ecological state of the sea surface during the corresponding
spawning season
524
Y.P. Zaitsev
specimen)
Brown alga Cystoseira sp. (unhealthy
specimen, covered by filamentous algae)
Polychaete Janua pagenstecheri
Polychaete Spirobranchus tiqueter
Left: a fry of grey mullets (Mugil cephalus, Liza saliens), with air sac on the dorsal
side (Zaitsev 1963). Right: A flock of grey mullets, hatched from neustonic eggs in
the open sea, and without leawing the neustal, migrating to the costs in search of
feeding grounds in shallow water bays, lagoons, limans and estuaries. The species
diversity and the number of grey mullet fry, coming to the shores, is a good
biological indicator of ecological state of the sea surface during the corresponding
spawning season
524
Y.P. Zaitsev