scholarly journals Seasonal Dynamics of Biological Indicators of the European Flounder Platichthys flesus Linnaeus, 1758 in the Central Part of the Kola Bay in 2018

2020 ◽  
Author(s):  
Oleg Bondarev
Keyword(s):  
Body Weight ◽  
Seasonal Dynamics ◽  
Distribution Density ◽  
Biological Indicators ◽  
Coastal Ecosystems ◽  
Fish Growth ◽  
Platichthys Flesus ◽  
Power Equation ◽  
Sexual Structure ◽  
European Flounder

The data on the seasonal dynamics of biological indicators of European flounder are presented for the central part of the Kola Bay for the year of 2018. In particular, the size-age and population sexual structure, feeding, and distribution density of European flounder were considered. The constants of the power equation of the dependence of the fish body weight on its length were obtained, the peculiarities of the fish growth were revealed. It is assumed that European flounder is one of the important components of the coastal ecosystems of the Kola Bay.

scholarly journals Response of Clarias gariepinus to Allium sativum-based diet on growth performance and Staphylococcus aureus challenge infection

2020 ◽  
Vol 24 (5) ◽  
pp. 755-759
Author(s):  
A.A. Nwabueze ◽  
J.K. Ekelemu ◽  
O.A. Owe
Keyword(s):  
Staphylococcus Aureus ◽  
Body Weight ◽  
Growth Performance ◽  
Allium Sativum ◽  
Clarias Gariepinus ◽  
Challenge Infection ◽  
Fish Growth ◽  
Fish Diet ◽  
Feed Conversion ◽  
Fish Samples

The response of Clarias gariepinus to Allium sativum on growth performance and as anti-bacterial agent in Staphylococcus aureus challenge infection was evaluated. A. sativum was included at 0% (control), 1.5%, 3.0%, and 4.5% in fish diet. Twenty fish samples each were randomly distributed into four tanks (T1, T2, T3 and T4). Fish were fed twice daily at 5% body weight for twelve weeks. All fish were challenged with 0.5ml of pure culture of S. aureus. A significant (P<0.05) increase in body weight, total length and standard length was observed. A. sativum at 3.0% inclusion promoted highest growth with feed conversion ratio (1.25-1.41), protein efficiency ratio (1.72-0.56), specific growth rate (1.92-2.09), condition factor (0.83-1.99) and survival rate (60-95). Fish-fed A. sativum diet showed that 4.5% inclusion had the least S. aureus activity. Bacteria load significantly (P<0.05) decrease at week 12. Culture water had dissolved oxygen of 4.0 - 4.2 mg/L, pH 6.0 - 7.0 and temperature of 26.0-28.0oC. This study has shown that A. sativum supplemented diets enhanced growth of C. gariepinus and functioned as antibacterial agent against S. aureus. A. sativum at 3.0% inclusion in diet is recommended for better fish growth and 4.5% A. sativum for antibacterial action. Keywords: Fish, herb, growth, infection

Sex-related responses to oxidative stress in primary cultured hepatocytes of European flounder (Platichthys flesus L.)

2001 ◽  
Vol 52 (2) ◽  
pp. 143-155 ◽  
Author(s):  
Katja Winzer ◽  
Gary W Winston ◽  
Wilhelm Becker ◽  
Cornelis J.F Van Noorden ◽  
Angela Köehler
Keyword(s):  
Oxidative Stress ◽  
Cultured Hepatocytes ◽  
Platichthys Flesus ◽  
Primary Cultured Hepatocytes ◽  
European Flounder

scholarly journals Seasonal dynamics of phytoplankton in response to environmental variables in contrasting coastal ecosystems

2019 ◽  
Vol 26 (12) ◽  
pp. 12025-12041 ◽  
Author(s):  
Suchismita Srichandan ◽  
Sanjiba Kumar Baliarsingh ◽  
Satya Prakash ◽  
Aneesh A. Lotliker ◽  
Chandanlal Parida ◽  
...  
Keyword(s):  
Seasonal Dynamics ◽  
Environmental Variables ◽  
Coastal Ecosystems

Seasonal Dynamics of Algal Biodiversity and Water Quality Assessment of Jiangsu Shilianghe Reservoir in China

2013 ◽  
Vol 807-809 ◽  
pp. 61-65
Author(s):  
Yuan Gao
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Cell Density ◽  
Seasonal Dynamics ◽  
Algal Cell ◽  
Water Quality Assessment ◽  
Wiener Index ◽  
Biological Indicators ◽  
Sand Mining ◽  
Rivers And Lakes

Analysis of 4 sampling surveys on Jiangsu Shilianghe reservoir in May, July and October of 2011 and January of 2012, 109 species of algae belonging to 7 divisions were totally identified. The green algae and diatoms were the main species while Euglena and Cryptomonas were rare. The algal cell density in each season was compared as follows: summer (63.77 × 1000000 / L) > autumn (61.87 ×1000000 / L) > spring (43.31 ×1000000 / L) > winter (37.922 ×1000000 / L). Algae Shannon-Wiener index and Pielou indexes of each season were compared and described as follows: summer (2.71, 0.41) > winter (2.09, 0.32) > autumn (2.05, 0.31) > spring (1.85, 0.28). The Margalef indexes of each season were compared as follows: summer (1.51) > spring (1.38) > autumn (1.19) > winter (0.86). The water quality was assessed as α-medium pollution according to biological indicators. Sand mining, cages and obstruction between rivers and lakes may be the main reasons that lead to high algal cell density and low index of species diversity.

“Right” or “wrong”? insights into the ecology of sidedness in european flounder, Platichthys flesus

2011 ◽  
Vol 273 (3) ◽  
pp. 337-346 ◽  
Author(s):  
Tommaso Russo ◽  
Domitilla Pulcini ◽  
Daniele Costantini ◽  
Debbi Pedreschi ◽  
Elisa Palamara ◽  
...  
Keyword(s):  
Platichthys Flesus ◽  
European Flounder
Sign in / Sign up

Export Citation Format

Share Document