Balta, F.

Ipek, Z. Z.

Kayis, S.

English

A.O. Kovalevsky Institute of Marine Biological Research Open access repository

Национальная академия наук Украины
Институт биологии южных морей им. А.О. Ковалевского
Тезисы VII Международной
научно-практической конференции
Pontus Euxinus 2011
по проблемам водных экосистем,
посвящённой 140-летию Института биологии южных морей
Национальной академии наук Украины
Севастополь
2011
PONTUS EUXINUS – 2011
267
Sevki Kayis, *Zeynep Zehra Ipek, Fikri Balta
Rize University Fisheries Faculty, 53100, Rize, Turkey,
zeynep_zehra_ipek@hotmail.com
ICHTHYOPHTHIRIUS MULTIFILIIS INFESTATION IN BROOK
TROUT (SALVELINUS FONTINALIS, MITCHILL 1814) AT LOW 
WATER TEMPERATURES
Water temperature is very important factor for parasitic infestation in 
fish. Therefore, between the water temperature and parasitic damages in cultured
fish species was commonly investigated in all aquatic systems. In the present
study, “white spot disease” caused by Ichthyophthirius multifiliis of brook trout,
(Salvelinus fontinalis), at low water temperatures was determined. While
optimum water temperatures for Ichthyophthirius multifiliis infestation were
stated as 20-250C, in the present study, Ichthyophthirius multifiliis, caused 15%
fish mortalities at 110C.
Ulgen Kopuz, Ali Muzaffer Feyzioglu, Ertugrul Agirbas
Karadeniz Technical University, Faculty of Marine Sciences, 61530, Sürmene,
Trabzon/ Turke, ulgenkopuz@yahoo.com
ABUNDANCE AND BIOMASS OF CYANOBACTERIA
SYNECHOCOCCUS SPP. IN SOUTH EASTERN BLACK SEA DURING
LATE SPRING 2010
Synechococcus spp. are known to be major contributors to primary
production in the world’s ocean. However, knowledge of the Synechococcus 
spp. distribution and biomass is quite restricted, and consequently, little is
known about the carbon cycling of the Black Sea ecosystem. The aim of this
study is to understand the distribution and relative contribution of 
Synechococcus spp. to the carbon cycle and how they relate to nutrients, light
and temperature. The relationships among environmental conditions and
cyanobacteria Synechococcus spp. abundance were characterized during late
Spring 2010 in the South Eastern Black Sea shelf waters. Seawater samples
were taken 10 meter intervals from surface to 60 meter depths in two stations.
Epiflourescence microscope and the image analysis system were used to 
estimated abundance and biomass of Synechococcus spp. Abundance range from
0,03x104 cells ml-1- 65,77x104 cells ml-1 whereas biomass range from 0,015 µg 
C l-1 - 23,87 µg C l-1. During sampling period maximum abundance and biomass
of Synechococcus spp. were found at 1% light level at June 2010. No direct
correlations were found between Synechococcus spp. abundance and nitrate,
nitrite, phosphate, and silicate.


Ichthyophthirius multifiliis infestation in brook trout (Salvelinus fontinalis, Mitchill 1814) at low water temperatures

https://repository.marine-research.org/bitstream/299011/2575/1/267-267.pdf

Ichthyophthirius multifiliis infestation in brook trout (Salvelinus fontinalis, Mitchill 1814) at low water temperatures

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A.O. Kovalevsky Institute of Marine Biological Research Open access repository