Toxicity Assessment of Phenanthrene using the Survival and Population Growth Rate of the Marine Rotifer, Brachionus plicatilis

2017 ◽  
Vol 35 (4) ◽  
pp. 573-580 ◽  
Author(s):  
Un-Ki Hwang ◽  
Hoon Choi ◽  
Soo-Jung Jang ◽  
Seung Heo ◽  
Ju-Wook Lee
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Population Growth Rate ◽  
Brachionus Plicatilis ◽  
Toxicity Assessment ◽  
Rotifer Brachionus Plicatilis ◽  
Marine Rotifer

scholarly journals Population growth and cyst production of the rotifer Brachionus plicatilis (Monogonta: Brachionidae) fed with three different diets

2013 ◽  
Vol 5 (2) ◽  
pp. 195-199
Author(s):  
A.A. Ortega-Salas ◽  
C.I. Reyes ◽  
H. Reyes-Bustamante
Keyword(s):  
Population Growth ◽  
Population Growth Rate ◽  
Brachionus Plicatilis ◽  
Mean Value ◽  
Mean Values ◽  
Cyst Production ◽  
Rotifer Brachionus Plicatilis ◽  
The Mean ◽  
Cyst Hatching ◽  
Good Food

This study compares the effect of different diets on population growth, fecundity rate, production, and cyst hatching efficiency of the rotifer Brachionus plicatilis. Microalgae were cultured using filtered and sterilized seawater at 25 and 26ºC. The volume of the containers for algae, bread yeast, and rotifer was duplicated daily from 31mL to 16L in nine days. Rotifers were cultured at 25°C and 35o/oo salinity. The mean values of daily population growth rate for the rotifers fed on C. muelleri, I. galbana and bread yeast were 0,91, 0,89 and 0,87 daily counts, respectively.  After 10 cultured days, fecundity was 72%, 63% and 36% using C. muelleri, I. galbana and bread yeast, respectively. The highest mean value for cysts production was 4 064 000 cysts found from 63 243 (1,55%) rotifers fed on C. muelleri. Hatching efficiency after 36 hours of cysts from rotifers fed C. muelleri was 51 500 (94,3%) new borns, followed by 45 000 (93,3%) with I. galbana, and 31 000 (92,6%) with bread yeast. C. muelleri is a good food source for B. plicatilis.KEY WORDSFecundity, feeding, hatching, salinity, temperature

scholarly journals Cultivation of the microalgae Chaetoceros gracilis to feed the rotifer Brachionus plicatilis

2013 ◽  
Vol 5 (2) ◽  
pp. 189-193
Author(s):  
A.A. Ortega-Salas ◽  
H. Reyes-Bustamante
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Brachionus Plicatilis ◽  
Chaetoceros Gracilis ◽  
Rotifer Brachionus Plicatilis ◽  
System Volume ◽  
Exponential Population ◽  
Three Phases

The microalgae Chaetoceros gracilis was cultivated to feed the rotifer Brachionus plicatilis. Microalgae and rotifers were grown separately, each for 10 days in a growing system volume of 62,5mL to 20L (1st phase). This was followed by 10 days in 250L (2nd phase), after 10 days in 1 500L (3rd phase). The growth rate exponential population at intervals of 24h for C. gracilis was 0,72, 0,30, and 0,28cells/mL to three phases of cultivation. Within 24h the arithmetic growth rate for the population of B. plicatilis was 330, 1 858 and 13 912rotifers/day in three phases of cultivation. Twenty-four hour intervals counts from the increasing number of organisms in the cultivation of microalgae, allows the prediction of a rotifer production necessary to feed a certain number organisms.KEY WORDSRotifer culture, population growth, fecundity, Chaetoceros culture

Effect of Heavy Metals on the Survival and Population Growth Rates of Marine Rotifer, Brachionus plicatilis

2016 ◽  
Vol 34 (4) ◽  
pp. 353-360 ◽  
Author(s):  
Un-Ki Hwang ◽  
Hyang-Mi Ryu ◽  
Seung Heo ◽  
Soo-Jung Chang ◽  
Ki-Won Lee ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Population Growth ◽  
Growth Rates ◽  
Brachionus Plicatilis ◽  
Population Growth Rates ◽  
Rotifer Brachionus Plicatilis ◽  
Marine Rotifer
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