Two contrasting estuarine copepods, Acartia tonsa and Eurytemora carolleeae, the former a broadcast spawner latter brood spawner, were fed constant carbon-based diatom diet, but which had variable N:P content, elemental composition (C, N, P) of tissue eggs, as well changes in rates grazing, excretion, egg production viability measured. To achieve varied Thalassiosira pseudonana was grown contin...

Seasonal variations of zooplankton communities were studied in the southern Caspian Sea for 4 successive seasons and 8 transects with 5 stations from 5 to 100 m depths which sampled during 2009. The zooplankton population constituted of 73.33% copepods, 24.21% rotifers, 2.23% cladocerans and 0.23% protozoans. Copepods were dominant at all stations with a density between 1456±531 ind. m-3 (Trans...

The study of planktonic animals the Caspian Sea is topical and, during last centuries, has brought and continues to bring new results. This an inevitable process attributed introduction non-indigenous predatory representatives zooplankton by ballast water ships. During period, Middle was represented 13 taxa consisted mainly species typical Palearctic region. Native fauna three species—cladocera...

This study was conducted in the sea system of Taranto (south Italy) to explore consequences COVID-19 lockdown all human activities on zooplankton abundance and composition. Copepoda were selected as best indicators four different dates taken represent annual variability. The availability samples from past collections (15 30 years ago) allowed comparison with previous situations. community most ...

The ecosystem of the Caspian Sea have been strikingly changed by human activities. This area has undergone significant ecological alterations and serious environmental degradation since the beginning of 1990s. The impact of fish cage culture on the zooplankton community was studied in the southwestern Caspian Sea, off Jafrud during January to April 2013. A total of 12 zooplankton belonging to 9...

To understand the effects of variable water masses in northeastern East China Sea (Korea South Sea), planktonic copepods were seasonally sampled. Out a total 106 copepod species, 85 oceanic warm-water and number species varied summer, autumn, spring, winter. The study area was divided into two or three regions according to degree influence masses. Canthocalanus pauper, Clausocalanus furcatus, O...