نتایج جستجو برای: walking catfish

تعداد نتایج: 45925  

Journal: :Journal of neurophysiology 2006
Paul Witkovsky William K Stell Andrew T Ishida

This essay looks at the historical significance of three APS classic papers that are freely available online: Naka K-I and Nye PW. Role of horizontal cells in organization of the catfish retinal receptive field. J. Neurophysiol 34:785-801, 1971. Marmarelis PZ and Naka K-I. Nonlinear analysis and synthesis of receptive-field responses in the catfish retina. II. One-input white-noise analysis. J....

2011
Jessica R. Baumann Thomas J. Kwak

The flathead catfish Pylodictis olivaris is a large piscivore that is native to the Mississippi and Rio Grande river drainages but that has been widely introduced across the United States. River ecologists and fisheries managers are concerned about introduced flathead catfish populations because of the negative impacts on native fish communities or imperiled species associated with direct preda...

Journal: :Diseases of aquatic organisms 2011
De-fang Chen Kai-yu Wang Yi Geng Jun Wang Xiao-li Huang Ming He

The pathological changes present in channel catfish Ictalurus punctatus spontaneously infected by Streptococcus iniae are described. The most consistent gross findings were marked petechial hemorrhages of the skin and congestion of internal organs, particularly the liver, spleen and kidneys. Other features included color fading at the edge of fin rays, enteritis and ascites. Histological examin...

Journal: :Pest management science 2004
Kumudini M Meepagala George Sturtz Charles C Mischke David Wise Stephen O Duke

The ram's horn snail (Planorbella trivolvis (Say)) is an intermediate host for a digenetic trematode (Bolbophorus confusus (Krause) Dubois) that has recently been discovered to be a significant problem in commercial channel catfish (Ictalurus punctatus Raf) production ponds in the Mississippi Delta region in the USA. In these catfish ponds, the digenetic life cycle of this parasitic trematode i...

Journal: :Archives of environmental contamination and toxicology 2009
Jim R Kuykendall Kyle L Miller Kristen M Mellinger Andrew J Cain Michael W Perry Michael Bradley Eric J Jarvi Dennis J Paustenbach

DNA-protein cross-links (DPXs) in fish erythrocytes represent a potential biomarker for exposure to metal cations, such as hexavalent chromium (Cr[VI]) and divalent nickel (Ni[II]). Species-specific sensitivities to DPX formation were studied by coexposure of juvenile specimens of rainbow trout, hybrid bluegill, and channel catfish to waterborne metals, such as Cr(VI) and Ni(II). In a species c...

Journal: :Biochimica et biophysica acta 2005
Latonya A Clay Shiao Y Wang William R Wolters Brian C Peterson Geoffrey C Waldbieser

The insulin-like growth factor I (IGF-I) gene was characterized in channel catfish. Partial cDNA sequence, missing exon 1 and part of exon 2, was obtained in 5'- and 3'-RACE experiments. Direct sequencing of two bacterial artificial chromosome clones revealed gene structure and provided sequence from 640 bp upstream of the initiator methionine to 136 bp beyond the polyadenylation site. Genomic ...

2006
HAROLD L. SCHRAMM MICHAEL A. EGGLETON

Annual growth increments were calculated for blue catfish (Ictalurus furcatus) and flathead catfish (Pylodictis olivaris) from the lower Mississippi River (LMR) to assess hypothesized relationships between fish growth and floodplain inundation as predicted by the Flood-Pulse Concept. Variation in catfish growth increment was high for all age classes of both species, and growth increments were n...

2015
Pradipta Paul Harresh Adikesavalu Sayani Banerjee Thangapalam Jawahar Abraham

Philippine catfish, Clarias batrachus farming is receiving much attention in recent years so also the diseases in catfish aquaculture. During the disease surveillance in catfish farms, mortalities were observed in C. batrachus fingerlings in a nursery and this report describes the bacteriological and histopathological observations made on the diseased catfish. The gross and clinical signs obser...

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