Isolation and characterization of prolactin from the grey mullet, Mugil cephalus

1976 ◽  
Vol 53 (1) ◽  
pp. 133-137 ◽  
Author(s):  
J.T. Woosley ◽  
J.R. Linton
Keyword(s):  
Mugil Cephalus ◽  
Grey Mullet ◽  
Isolation And Characterization

scholarly journals Isolation and characterization of a novel phytosphingosine-containing GM2 ganglioside from mullet roe (Mugil cephalus).

1984 ◽  
Vol 259 (14) ◽  
pp. 8980-8985 ◽  
Author(s):  
Y T Li ◽  
Y Hirabayashi ◽  
R DeGasperi ◽  
R K Yu ◽  
T Ariga ◽  
...  
Keyword(s):  
Mugil Cephalus ◽  
Gm2 Ganglioside ◽  
Isolation And Characterization

scholarly journals Isolation and characterization of an activator protein for the hydrolysis of ganglioside GM2 from the roe of striped mullet (Mugil cephalus)

1989 ◽  
Vol 260 (3) ◽  
pp. 777-783 ◽  
Author(s):  
R DeGasperi ◽  
Y T Li ◽  
S C Li
Keyword(s):  
Mugil Cephalus ◽  
Striped Mullet ◽  
Activator Protein ◽  
Isolation And Characterization ◽  
Mammalian Tissues ◽  
Hexosaminidase A ◽  
Ammonium Sulphate Fractionation ◽  
Gm2 Activator ◽  
Hydrolysis Of

After the revelation of the presence of ganglioside GM2 as the major ganglioside in the roe of striped mullet, Mugil cephalus [Li, Hirabayashi, DeGasperi, Yu, Ariga, Koerner & Li (1984) J. Biol. Chem. 259, 8980-8985], we have continued to investigate the catabolism of GM2 in this tissue. We have found that mullet roe contains a specific activator protein which stimulates the hydrolysis of GM2 carried out by the beta-hexosaminidase isolated from the same tissue. This activator has been purified by using conventional procedures including ammonium sulphate fractionation and chromatography on Sepharose 6B, DEAE-Sephadex A-50, octyl-Sepharose and Matrex Gel Blue A columns. This activator protein is also able to stimulate the hydrolysis of GM2 carried out by human beta-hexosaminidase A. Unlike human GM2-activator, the roe activator protein does not stimulate the hydrolysis of GgOse3Cer or GbOse4Cer. The molecular mass (18 kDa) of the roe activator protein was found to be similar to that of human GM2-activator; however, the pI (pH 4.1) was found to be lower than that of human GM2-activator. This is the first report on the presence of a GM2-activator protein in a source other than mammalian tissues.

Isolation and Characterization of an Anaerobic Bacterium, Eubacterium tarantellus sp.nov., Associated with Striped Mullet (Mugil cephalus) Mortality in Biscayne Bay, Florida

1977 ◽  
Vol 34 (3) ◽  
pp. 402-409 ◽  
Author(s):  
Lanny R. Udey ◽  
Elaine Young ◽  
Bennett Sallman
Keyword(s):  
Ictalurus Punctatus ◽  
Anaerobic Bacterium ◽  
Biochemical Characterization ◽  
Anaerobic Bacteria ◽  
Mugil Cephalus ◽  
Estuarine Fish ◽  
Biscayne Bay ◽  
Striped Mullet ◽  
Isolation And Characterization

An asporogenous, gram-positive, anaerobic bacterium was isolated in pure culture from the brains of numerous dead and moribund striped mullet (Mugil cephalus) from Biscayne Bay, Florida. Biochemical characterization confirmed that it was a new species and has been named Eubacterium tarantellus (ATCC 29255). All isolates produced lecithinase and deoxyribonuclease, were beta hemolytic, but only weakly fermented selected carbohydrates. This anaerobe was pathogenic for channel catfish (Ictalurus punctatus) but not for white mice or guinea pigs.More recently E. tarantellus has been isolated from 10 additional fish species. This and other anaerobic bacteria may be significant pathogens of estuarine fish. Key words: Anaerobic bacteria, Eubacterium, Mugil cephalus, and fish diseases.

scholarly journals Characterization of the different behaviours exhibited by juvenile grey mullet (Mugil cephalus) under rearing conditions

2021 ◽  
Author(s):  
Jessica A. Jimenez-Rivera ◽  
Anaïs Boglino ◽  
Joel F. Linares-Cordova ◽  
Neil J. Duncan ◽  
María de Lourdes Ruiz-Gómez ◽  
...  
Keyword(s):  
Mugil Cephalus ◽  
Grey Mullet ◽  
Video Recordings ◽  
Variable Bottom ◽  
Rearing Conditions ◽  
The Common ◽  
Common Behaviour ◽  
Rearing Techniques ◽  
Adaptation To Captivity

AbstractThis research described the common behaviour of grey mullet (Mugil cephalus) under rearing conditions. The different behaviours exhibited by mullets were videorecorded with submersible cameras installed inside of three tanks. A total of 690 minutes per day (07:30 - 18:30 hours) were recorded per tank during a week. Afterwards, an ethogram was elaborated to organize the different behaviours exhibited by juvenile M. cephalus, with two general categories: a) locomotion, including three different observed behaviours (resting, swimming and fast swimming) b) feeding, including three behaviours (surface feeding, bottom feeding and rubbing). The video recordings showed that M. cephalus is a species with a constant locomotion associated to feeding, since they showed constantly movement during most of day light period the opposite to dark periods. Mullets were observed to be a non-aggressive fish species, due to the absence of dominance and aggression towards conspecifics, resulting in a high predisposition for adaptation to captivity. Finally, behavioural frequencies of grey mullet’s juveniles were not significantly different among the three tanks for most of the behavioural variables analysed (p>0.05) except for the variable bottom feeding (p=0.02). Results from this study could be of interest to the aquaculture industry to implement protocols and to optimize rearing techniques for the production of grey mullet.

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