The acid-base responses of gills and kidneys to infused acid and base loads in the channel catfish, Ictalurus punctatus.

Short Communication:Effects of the addition of a marigold extract to diets fed to channel catfish (Ictalurus punctatus) on growth parameters

Short Communication:Effects of the addition of a marigold extract to diets fed to channel catfish (Ictalurus punctatus) on growth parameters

Molecular characterization and differential expression of the myostatin gene in channel catfish (Ictalurus punctatus).

Myostatin is a recently discovered gene that inhibits muscle growth. In the present study, we characterized the myostatin locus and its expression in channel catfish (Ictalurus punctatus). The genomic DNA and cDNA encoding the channel catfish myostatin were cloned and sequenced. The myostatin gene has three exons encoding a protein of 389 amino acids. Comparison of the genomic sequences with th...

The distribution of branchial carbonic anhydrase and the effects of gill and erythrocyte carbonic anhydrase inhibition in the channel catfish Ictalurus punctatus.

Carbonic anhydrase (CA) activity was assayed in lysed erythrocytes and in branchial cytoplasm, mitochondria and microsomes of the channel catfish, Ictalurus punctatus. Branchial CA activity was highest in the cytoplasmic fraction, but activity was very low in mitochondria and microsomes. Erythrocyte CA activity was over four-fold greater than that in the gills. Intact animals were injected with...

Short-Term Feed Deprivation Alters Immune Status of Surface Mucosa in Channel Catfish (Ictalurus punctatus)

Short-term feed deprivation (or fasting) is a common occurrence in aquacultured fish species whether due to season, production strategies, or disease. In channel catfish (Ictalurus punctatus) fasting impacts susceptibility to several bacterial pathogens including Flavobacterium columnare, the causative agent of columnaris disease. As columnaris gains entry through the gills and skin of fish, we...