نتایج جستجو برای: walking catfish

تعداد نتایج: 45925  

2008
EDWIN H. ROBINSON MENGHE H. LI Thad Cochran

Two pond experiments were conducted to evaluate cottonseed meal (CSM), distiller’s dried grains with solubles (DDGS), and supplemental lysine as replacements for soybean meal (SBM) in channel catfish diets. In Experiment 1, fish fed diets in which SBM was totally replaced with CSM gained similar weight as fish fed control diet, but fish fed CSM diet in Experiment 2 had 9.5% lower weight gain th...

2005
WILLIAM E. PINE THOMAS J. KWAK D. SCOTT WATERS JAMES A. RICE

—In two coastal North Carolina rivers (Contentnea Creek and the Northeast Cape Fear River), we found the food habits of introduced flathead catfish Pylodictis olivaris to be primarily piscivorous, which could restructure or suppress native fish communities through direct predation. Fish or crayfish contributed more than 50% of the stomach contents by percent occurrence, percent by number, and p...

Journal: :Investigative ophthalmology & visual science 1983
B L Frank S Goldberg

The retinas of certain catfish contain multiple optic discs. This report describes the patterns of optic nerve fibers and optic discs as seen in silver-stained flat mounts, in 11 different families of catfish. As many as 50 optic discs may exist in a single retina, in paired and unpaired combinations, and in slit and ring-like arrays.

Journal: :Comparative biochemistry and physiology. Part D, Genomics & proteomics 2015
Yi Tian Jun Yao Shikai Liu Chen Jiang Jiaren Zhang Yun Li Jianbin Feng Zhanjiang Liu

Receptor tyrosine kinases (RTKs) are high-affinity cell surface receptors for many polypeptide growth factors, cytokines and hormones. RTKs are not only key regulators of normal cellular processes, but are also involved in the progression of many types of tumors, and responses to various biotic and abiotic stresses. Catfish is a primary aquaculture species in the United States, while its indust...

Journal: :Tissue barriers 2015
Eric Peatman Miles Lange Honggang Zhao Benjamin H Beck

The mucosal barriers of catfish (Ictalurus spp) constitute the first line of defense against pathogen invasion while simultaneously carrying out a diverse array of other critical physiological processes, including nutrient adsorption, osmoregulation, waste excretion, and environmental sensing. Catfish depend more heavily on mucosal barriers than their terrestrial counterparts as they are contin...

2009
France Cheong

Although the Vietnamese catfish farming has grown at very high rates in recent years, the industry has also faced many problems affecting its sustainability. This paper studies the perceptions of catfish farmers regarding risk and risk management strategies in their production activities. Specifically, the study aims to measure the consequences, likelihoods, and levels of risks as well as the e...

Journal: :Vaccine 2011
Julia W Pridgeon Phillip H Klesius

The efficacy of a novel attenuated Edwardsiella ictaluri vaccine (B-50348) was determined in channel catfish (Ictalurus punctatus) by bath immersion and intraperitoneal (IP) injection. The vaccine was developed from a virulent strain of E. ictaluri (AL93-58) through selection for novobiocin resistance. When channel catfish (average weight 10 g) were IP injected with 4.2 × 10⁶ colony-forming uni...

Journal: :General and comparative endocrinology 2001
B C Small D Nonneman

In nonmammalian vertebrates, pituitary adenylate cyclase activating polypeptide (PACAP) and a putative growth hormone-releasing hormone (GHRH-like peptide) are encoded by a single mRNA transcript. Both PACAP and GHRH have been implicated in the control of fish growth. Although the gene encoding PACAP and GHRH-like peptide (GHRHLP) has been cloned in other fishes, characterization of this gene i...

Journal: :Veterinary microbiology 2013
Julia W Pridgeon Phillip H Klesius Lin Song Dunhua Zhang Kyoko Kojima James A Mobley

In West Alabama, disease outbreaks in 2009 caused by Aeromonas hydrophila have led to an estimated loss of more than $3 million. In 2010, disease outbreak occurred again in West Alabama, causing losses of hundreds of thousands of pounds of market size channel catfish. During the 2010 disease outbreak in West Alabama, four isolates of A. hydrophila were cultured from the kidney tissues of diseas...

Journal: :General and comparative endocrinology 2005
Attila Karsi Geoffrey C Waldbieser Brian C Small William R Wolters

Proopiomelanocortin (POMC) is an important gene involved in the stress response of the hypothalamic-pituitary-adrenal axis. It is a precursor of several peptide hormones including adrenocorticotropic hormone, melanocyte stimulating hormones, and beta-endorphin. Our study aims to determine genomic structure and expression of POMC gene during temporal stress in channel catfish (Ictalurus punctatu...

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