Effects of Temperature on Mortality of Fingerling Channel Catfish (Ictalurus punctatus) Experimentally Infected with Channel Catfish Virus

1973 ◽  
Vol 30 (4) ◽  
pp. 568-570 ◽  
Author(s):  
John A. Plumb
Keyword(s):  
Water Temperature ◽  
Temperature Change ◽  
Constant Temperature ◽  
Ictalurus Punctatus ◽  
Salt Solution ◽  
Channel Catfish ◽  
Channel Catfish Virus ◽  
Potential Value ◽  
Cultural Conditions ◽  
Effects Of Temperature

When water temperature was reduced from 28 to 19 C for channel catfish (Ictalurus punctatus) fingerlings 24 hr after injection with channel catfish virus (CCV), 24% mortality occurred. In comparison, fish held at a constant temperature of 28 C had a mortality of 94% and those held in 19 C water had 14% mortality. Reducing the temperature to 19 C when the first deaths occurred at 28 C (64–72 hr after injection) resulted in 78% mortality. Insignificant mortality occurred in fish injected with Hanks’ balanced salt solution. Results of temperature change are discussed as to their potential value in reducing the effects of CCV disease under cultural conditions.

Isolation of channel catfish virus from channel catfish, Ictalurus punctatus (Rafinesque), broodstock*

1985 ◽  
Vol 8 (6) ◽  
pp. 557-561 ◽  
Author(s):  
P. R. BOWSER ◽  
A. D. MUNSON ◽  
H. H. JARBOE ◽  
R. FRANCIS-FLOYD ◽  
P. R. WATERSTRAT
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Channel Catfish Virus

Establishment of Walking Catfish (Clarias batrachus) Cell Lines and Development of a Channel Catfish (Ictalurus punctatus) Virus Vaccine

1981 ◽  
Vol 38 (8) ◽  
pp. 925-930 ◽  
Author(s):  
Edward J. Noga ◽  
James X. Hartmann
Keyword(s):  
Cell Lines ◽  
Cell Cultures ◽  
Vaccine Strain ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Kidney Cell ◽  
Clarias Batrachus ◽  
Fish Cell ◽  
Wild Type ◽  
Channel Catfish Virus

Cell lines from apparently normal gill, gonad, and kidney tissue of adult walking catfish (Clarias batrachus) were established and have been subcultured 75, 80, and 95 times, respectively. The cells were propagated in a modified Ham's F-12 medium at 25 °C but are capable of growth at 37 °C. The gill and kidney cells are the first to have been established from these tissues in fish. The kidney cell line is fibroblastic, the gonad is a mixed epithelioid–fibroblastic type, and the gill is pleomorphic. All three cell lines are susceptible to channel catfish virus (CCV), exhibiting cell fusion and other marked cytopathic effects. A live attenuated vaccine strain of CCV was produced by repeated passage of a virulent strain of CCV in kidney cell cultures. The vaccine strain is less virulent than the wild-type CCV and protects fingerling catfish against challenge with wild-type virus.Key words: channel catfish virus, Clarias batrachus, fish cell cultures, vaccine

Characteristics of a Previously Unidentified Virus from Channel Catfish (Ictalurus punctatus)

1984 ◽  
Vol 41 (5) ◽  
pp. 807-811 ◽  
Author(s):  
Donald F. Amend ◽  
Terry McDowell ◽  
Ronald P. Hedrick
Keyword(s):  
Cell Lines ◽  
Crassostrea Virginica ◽  
Virus Replication ◽  
Virus Strain ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Average Diameter ◽  
Virus Infectivity ◽  
Channel Catfish Virus ◽  
The Family

A virus (strain F82-34) was isolated from channel catfish (Ictalurus punctatus) that was clearly distinct from channel catfish virus (CCV). The virus induced extensive syncytia in channel catfish ovary (CCO) cells incubated at 26 °C. The BB and CHSE-214 cell lines supported virus replication but the FHM line was refractory. Virus replication was optimal at 25 °C where, after 96 h, approximately 50% of the virus was found to be released from CCO cells. Virus infectivity was stable for 1 mo at4, 16, and 23 °C and for 5 mo at −20 and −8Q °C but was lost after 7 d at45 °C. Partially purified virions are double-shelled hexagonal capsids characteristic of reoviruses and have an average diameter of 75 nm. F82-34 was related to but distinct from two other reoviruses from fish in neutralization studies; these three viruses, and possibly a fourth from American oysters (Crassostrea virginica), appear to represent a new taxonomic group within the family Reoviridae. We therefore propose that this new virus be tentatively designated catfish reovirus (CRV).

First detection of channel catfish virus associated with mortality of cultured catfish (Ictalurus punctatus, Rafinesque) in Mexico

2007 ◽  
Vol 38 (13) ◽  
pp. 1428-1431 ◽  
Author(s):  
Jesús Genaro Sánchez-Martínez ◽  
Gabriel Aguirre-Guzmán ◽  
Ned Ivan de la Cruz-Hernández ◽  
Julio Martínez-Burnes ◽  
Roberto Pérez-Castañeda ◽  
...  
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Channel Catfish Virus

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
Water Temperature ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Natural Habitat ◽  
Climatic Conditions ◽  
Water Bodies ◽  
The Soviet Union ◽  
Private Entrepreneurs ◽  
Marine Lagoon ◽  
Local Water

<em>Abstract</em>.—The channel catfish <em>Ictalurus punctatus</em> was first introduced from the United States to the Soviet Union in 1972–1979. From the Krasnodar region of Russia, it was introduced into Georgia during 1976–1978. Ecological studies of channel catfish were initiated along with the naturalization of this new species. Channel catfish were initially reproduced and reared in aquaculture ponds, and offspring from these ponds were used to stock natural water bodies, in particular lakes, where natural populations were formed. The climatic conditions of Georgia are close to the natural habitat of channel catfish. The number of days with water temperature higher than 20°C is about 120–140, and the accumulated heat reaches up to 2,400–2,792 degrees/d. They were also introduced into Lake Paliastomi (open marine lagoon) where the salinity fluctuates up to 8–14‰. These fish were caught in areas with salinity up to 14‰ and were often encountered in waters of 4–5‰ salinity or greater. Channel catfish grew well in the low-lying warm water bodies: they reached, on average, 19 g at age 1, 310 g at age 2, 1,300 g at age 3, 2,900 g at age 4, and 4,600 g at age 5. The fish became sexually mature in 3 years. Spawning occurred from May to June, when water temperature reached 24°C or higher. Channel catfish fed on a variety of insects, crustaceans, other bottom-dwelling arthropods, and fishes, especially crucian carp <em>Carassius carassius</em>, which is a strong competitor and is widely spread in the local water bodies. Channel catfish were considered a valuable introduction because they grew well, were adaptable to a wide range of conditions, were highly palatable, and provided important recreational sport fisheries, commercial fisheries, and aquaculture industries. There was concern that channel catfish were being overharvested, and consequently, in 2005, Georgia passed a bill that provided for more restrictive fishing regulations to protect this species from overharvest. The role of society and private entrepreneurs in the protection of channel catfish and regulation of its fisheries is important.

Growth Rates of a New Cell Line from Channel Catfish Ovary and Channel Catfish Virus Replication at Different Temperatures

1980 ◽  
Vol 37 (5) ◽  
pp. 871-873 ◽  
Author(s):  
P. R. Bowser ◽  
J. A. Plumb
Keyword(s):  
Cell Line ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Growth Rates ◽  
Frozen Storage ◽  
Population Doubling ◽  
Population Doubling Time ◽  
Fish Cell ◽  
Channel Catfish Virus ◽  
New Cell Line

Growth rates of a new cell line from the channel catfish, Ictalurus punctatus, were determined at temperatures from 10 to 35 °C. Growth was more rapid at 35 °C with the cells having a population doubling time of 12 h, and cell numbers declined at 10 °C. The cells survived frozen storage at −70 °C for up to 6 mo. Replication of channel catfish virus occurred from 10 to 35 °C. Although it was most rapid at 35 °C, maximum replication occurred at 30 °C.Key words: fish viruses, channel catfish virus, herpesvirus, fish cell cultures, fish diseases, cell growth rates

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