Results 211 to 220 of about 41,711 (253)
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Ontogeny of channel catfish lymphoid organs
Veterinary Immunology and Immunopathology, 2001Previously, we showed that catfish could not mount a detectable antibody response after bacterial exposure until 21 days post-hatch (ph). In order to evaluate the changes associated with the development of a functional humoral response, we evaluated the temporal and spatial distribution of immune cell populations in developing catfish.
L, Petrie-Hanson, A J, Ainsworth
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A Review of Marking and Tagging Methods for Blue Catfish, Channel Catfish, and Flathead Catfish
North American Journal of Fisheries Management, 2021Abstract Catfishes (Ictaluridae) are among North America’s most important ichthyofauna for human consumption and recreation. As such, research on Blue Catfish Ictalurus furcatus, Channel Catfish I. punctatus, and Flathead Catfish Pylodictis olivaris has been abundant in historic and contemporary literature.
Ben C. Neely +2 more
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Thiamin Requirement of Channel Catfish Fingerlings
The Journal of Nutrition, 1978In separate 20 and 12 week feeding studies, channel catfish fingerlings were fed semipurified diets containing five levels (0, 2.5, 5.0, 10.0 and 15.0 mg/kg) and six levels (0, 0.5, 1.0, 2.5, 5.0 and 10.0 mg/kg) of supplemented thiamin hydrochloride respectively.
T, Murai, J W, Andrews
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Diencephalic gustatory connections in the channel catfish
Journal of Comparative Neurology, 1993AbstractVertebrate gustatory systems include a tertiary ascending pathway from a secondary gustatory nucleus in the hindbrain to several forebrain nuclei. This connection is prominent in catfish, corresponding to their highly developed sense of taste. Iontophoretic injections of horseradish peroxidase were used to identify the specific target nuclei of
C F, Lamb, J, Caprio
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Riboflavin Requirement of Channel Catfish Fingerlings
The Journal of Nutrition, 1978Channel catfish fingerlings were fed purified diets containing five levels (0, 20, 40, 80, and 120 mg/kg) and six levels (0, 3, 8, 20, 40, and 80 mg/kg) of riboflavin in separate 20 and 12 week feeding studies. The dietary riboflavin level required to provide maximal growth in channel catfish fingerlings was found to be approximately 9 mg/kg of diet ...
T, Murai, J W, Andrews
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Seasonal Variation in Channel Catfish Virus Antibody Titers in Adult Channel Catfish
The Progressive Fish-Culturist, 1986Abstract Serum antibody titers for channel catfish virus (CCV) were measured in adult channel catfish (Ictalurus punctatus) that had survived an epizootic of channel catfish virus disease (CCVD) as fingerlings. Serum antibody titer data were grouped into four categories for statistical analysis based on the following titer levels: 30, high ...
Paul R. Browser, Alexander D. Munson
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Microsomal estrogen metabolism in channel catfish
Marine Environmental Research, 2004Our goal was to study the involvement of cytochrome P450 genes in estrogen metabolism and the extent to which the potentially carcinogenic 4-hydroxyestradiol metabolite is formed by channel catfish (Ictalurus punctatus; CC). Estradiol metabolism and ethoxyresorufin-O-deethylase (EROD) activity were assessed in several tissues from fish collected from ...
Harshala, Butala +3 more
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Proteolytic fragmentation of channel catfish antibodies
Developmental & Comparative Immunology, 1991Specifically purified anti-DNP antibodies from channel catfish were digested with pepsin or trypsin under various conditions and the resultant fragments analyzed in terms of their physico- and immunochemical properties. The results indicated that pepsinolysis of channel catfish antibodies to small peptides was exceedingly rapid and failed to yield ...
F W, van Ginkel, D W, Pascual, L W, Clem
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Channel catfish immunoglobulins: Repertoire and expression
Developmental & Comparative Immunology, 2006The channel catfish, Ictalurus punctatus, is widely recognized as an important model for studying immune responses in ectothermic vertebrates. It is one of the few fish species for which defined viable in vitro culture systems have been established and is currently the only fish species from which a variety of functionally distinct clonal leukocyte ...
Eva, Bengtén +4 more
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Vertical transmission of channel catfish virus
American Journal of Veterinary Research, 1988SUMMARY Channel catfish broodfish were examined nondestructively for the presence of channel catfish virus (ccv), using a nucleic acid-probing technique. A dot blot assay was tested and shown to be accurate and rapid in the diagnosis of ccv. Two ccv-positive fish were successfully mated, and fertilized eggs were collected.
J A, Wise +3 more
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