In order to characterize the zooplankton community at the Vitória Bay estuarine system (Southeastern Brazil), samples were collected in 10 sampling stations during a three-year study (1998-2000), every three months. A total of 64 taxa were identified. Copepoda contributed with the highest species number (49) in the community, especially with Acartia lilljeborgi, Acartia tonsa, Paracalanus parvu...

Kabupaten Banyuasin merupakan salah satu kabupaten yang ada di Provinsi Sumatera Selatan, memiliki potensi sumber daya perikanan dan kelautan besar, mencakup tangkap (laut perairan umum). Tujuan dari penelitian ini adalah menentukan jenis – plankton sebagian Pesisir Timur mendeteksi sebaran densitas dengan metode hidroakustik. Pengambilan analisis data telah dilaksanakan pada bulan September 20...

ZooImage, image analysis software, was evaluated to determine its ability to differentiate between zooplankton groups in preserved zooplankton samples collected in Prince William Sound, Alaska. A training set of 53 categories were established to train the software for automatic recognition. Using the Random forest algorithm, ZooImage identified particles in the training set with less than 13% e...

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 natural estrogen 17 -estradiol (E2) is responsible for the endocrine disruption and also has potential effect on the reproduction of vertebrate. However, its effect on invertebrate reproduction has scarcely been studied. The present study was conducted to determine the effect of E2 on survival, egg production and egg hatch of calanoid copepod, Acartia omorii under bath administration. Survi...

Chronic Cu toxicity was evaluated in the euryhaline copepod Acartia tonsa. Male and female copepods were exposed (6 d) separately to different combinations of Cu concentration and water salinity (5, 15, and 30 ppt) using different routes of exposure (waterborne, waterborne plus dietborne, and dietborne). After exposure, groups of one male and three female copepods were allowed to reproduce for ...