Influence of Fat Content on Uptake and Depuration of the Off-flavor 2-Methylisoborneol by Channel Catfish (Ictalurus punctatus)

1992 ◽  
Vol 49 (11) ◽  
pp. 2406-2411 ◽  
Author(s):  
Peter B. Johnsen ◽  
Steven W. Lloyd
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Analytical Method ◽  
Free Water ◽  
Fat Content ◽  
Flavor Compound ◽  
Lean Fish ◽  
The Impact

Channel catfish (Ictalurus punctatus) of different tissue fat contents (0.5–11.0%) were held in water containing approximately 0.5 μg/L of the off-flavor compound 2-methylisoborneol (MIB) for various times. A new analytical method was developed to quantify tissue burdens of MIB. Fish showed significant bioconcentration of MIB after 2 h and equilibrium by 24 h. The fatter fish (> 2.5% muscle fat) accumulated nearly three times more MIB than lean fish (< 2%). Purging fish in MIB-free water indicated that leaner fish depurate faster (8 h) than fatter fish (48 h). Fat content had more influence in determining the time for return to acceptable flavor than initial MIB concentration. Managing catfish production to harvest leaner fish could minimize the impact of off-flavor on fish producers.

Pharmacokinetics and Tissue Disposition of the Off-Flavor Compound 2-Methylisoborneol in the Channel Catfish (Ictalurus punctatus)

1990 ◽  
Vol 47 (3) ◽  
pp. 544-547 ◽  
Author(s):  
John F. Martin ◽  
Steven M. Plakas ◽  
Janis H. Holley ◽  
Joseph V. Kitzman ◽  
Anthony M. Guarino
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Sampling Period ◽  
Flavor Compound ◽  
Body Tissues ◽  
Tissue Disposition ◽  
Microwave Distillation ◽  
Rapid Clearance ◽  
Related Compounds ◽  
Compartment Open Model

The tissue disposition of the off-flavor compound 2-methylisoborneol (MIB) was examined in market-sized channel catfish (Ictalurus punctatus). Purified MIB was intravascular administered to channel catfish at a dosage of 1 mg∙kg−1 body weight. Body tissues and fluids were collected at intervals following administration and were analyzed for MIB by microwave distillation and capillary gas chromatography. Plasma clearance of MIB was characterized by a two-compartment open model with half-lives of 0.14 and 3.62 h or distribution and elimination phases, respectively. MIB was more concentrated in peritoneal fat and subepidermal adipose tissue than in other tissues. The concentration in the edible flesh decreased from 0.107 μg∙g−1 at 2 h to 0.025 μg∙g−1 at 96 h. There was no evidence of biotransformation of MIB to the related compounds 2-rnethylenebornane and 2-methyl-2-bornene over the 96-h sampling period. The low recoveries of the administered dose in body fluids and tissues and the rapid clearance suggested significant gill excretion of this compound.

A methemoglobin reductase system in channel catfish Ictalurus punctatus

1982 ◽  
Vol 60 (6) ◽  
pp. 1511-1513 ◽  
Author(s):  
David W. Huey ◽  
Thomas L. Beitinger
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Screening Test ◽  
Free Water ◽  
Rapid Recovery ◽  
Partial Explanation

A modified spot screening test for methemoglobin reductase (MHb reductase), indicated that this enzyme occurs in channel catfish, Ictalurus punctatus. The presence of MHb reductase offers at least a partial explanation of the rapid recovery observed when catfish with profound nitrite-induced methemoglobinemia are placed in nitrite-free water.

Urban and Community Fisheries Programs: Development, Management, and Evaluation

2008 ◽  
Keyword(s):  
High Risk ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Development Management ◽  
Before And After ◽  
History Of ◽  
Community Fisheries ◽  
The Impact ◽  
Fish Commission ◽  
A Current

<em>Abstract.-</em>The Arkansas Game and Fish Commission currently supports fishing derbies, which are special fishing events for youth, senior, and disabled anglers, by stocking channel catfish <em>Ictalurus punctatus </em>for derby events. This study evaluated angling activity at derby locations before and after the events and whether these effects were influenced by type (urban or rural; open or closed). Angler effort, demographics, license history of adults accompanying youth anglers, advertising, and angler satisfaction ratings were analyzed for derby events. Creel surveys were conducted the week before, during, and the week after 32 derby events stratified into derby types from 2005 to 2007. Angling effort and channel catfish catch were both significantly higher following derbies for all types, indicating the impact of derby stocking extends beyond the event itself. Participants were generally satisfied with both their angling success and the overall derby experience. Seventy-five percent of derby chaperones possessed a current fishing license, although about one-half fished five or fewer times per year, indicating a high risk of attrition. Derbies promote near-home fishing opportunities for these anglers, likely improving retention while providing a potential recruitment mechanism for new anglers.

scholarly journals Seasonal Sampling Influence on Population Dynamics and Yield of Channel Catfish and Walleye in a large Great Plains Reservoir

2020 ◽  
Author(s):  
Benjamin J Schall ◽  
Casey W. Schoenebeck ◽  
Keith D. Koupal
Keyword(s):  
Population Dynamics ◽  
Great Plains ◽  
Age Structure ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Survey Methodology ◽  
Growth Curves ◽  
Gill Net ◽  
Fish Samples ◽  
The Impact

Fish samples collected during different times of the year can be subject to various biases, but the influence of sampling during different seasons on population dynamics and yield metrics in large reservoirs is not well reported. This study compared the age structure, growth, mortality, and yield estimates of Channel Catfish Ictalurus punctatus and Walleye Sander vitreus collected during spring and fall with standardized gill netting in a large Nebraska reservoir. Fish were sampled using the Nebraska Game and Parks Commission standardized gill net survey methodology. Ages were estimated from pectoral spines of Channel Catfish and sagittal otoliths of Walleye, age-length keys were derived, and mean spring and fall ages were compared with t -tests. Spring and fall von Bertalanffy growth curves were compared with likelihood-ratio tests, and mortality estimates from weighted catch curves were compared with an analysis of variance. Spring and fall yield estimates derived from yield-per-recruit models were visually compared to assess the impact of variable population dynamics estimates. Estimates of mean age, growth coefficient ( K ), mean asymptotic length ( L ∞ ), total annual mortality ( A ), and yield of Channel Catfish did not differ between spring and fall. Conversely, older age structure of Walleye in spring resulted in lower estimates of A and higher yield than in fall. Estimates of L ∞ and K differed between spring and fall for female Walleye, and L ∞ , K , and t 0 estimates varied between spring and fall for male Walleye. Fall yield estimates were substantially lower than spring estimates for both male and female Walleye. These results demonstrate that the season when samples are collected can impact population dynamics estimates for certain species while others remain relatively unaffected.

Chlordane and Toxaphene Residues following Cooking of Treated Channel Catfish Fillets

2000 ◽  
Vol 63 (6) ◽  
pp. 763-767 ◽  
Author(s):  
C. R. SANTERRE ◽  
R. INGRAM ◽  
D. H. XU ◽  
G. W. LEWIS ◽  
L. G. LANE
Keyword(s):  
Moisture Content ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Fat Content ◽  
Catfish Fillets

The reduction in residues of chlordane and toxaphene following cooking (frying, baking, and smoking) of fillets obtained from treated Channel catfish (Ictalurus punctatus) was determined. On average, cooking reduced moisture content by 17% and increased fat content by 28 to 274%. Frying reduced chlordane residues by 56 to 86% on a dry basis (db) or 84 to 92% on a percent fat basis (fb) when raw fillets were compared to cooked fillets. Baking and smoking reduced chlordane significantly less (P &lt; 0.05) than frying with reductions in residues of 12% and 9% (db) or 30% and 33% (fb), respectively. Frying reduced toxaphene residues by 40 to 49% (db) or 65 to 77% (fb), while baking and smoking reduced toxaphene by 35% and 24% (db) or 51% and 59% (fb), respectively.

Ammonia-Caused Gill Damage in Channel Catfish (Ictalurus punctatus): Confounding Effects of Residual Chlorine

1983 ◽  
Vol 40 (2) ◽  
pp. 242-247 ◽  
Author(s):  
Stephen J. Mitchell ◽  
Joseph J. Cech Jr.
Keyword(s):  
Water Quality ◽  
Causative Agent ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Free Water ◽  
Gill Tissue ◽  
Residual Chlorine ◽  
Sewage Effluent ◽  
Histological Evidence ◽  
Municipal Water

Histological evidence failed to confirm that ammonia is a direct causative agent of gill hyperplasia, as previously believed, in channel catfish, Ictalurus punctatus. Levels of residual chlorine compounds, which are typical of charcoal-filtered municipal water or chlorinated sewage effluent, together with moderate ammonia levels caused severe gill hyperplasia. These results both question the validity of attributing gill tissue hyperplasia to ammonia alone by past investigations and emphasize the serious problem of obtaining contaminant-free water for aquatic toxicological studies.Key words: Ictalurus punctatus, channel catfish; ammonia, gills, chloramine, hyperplasia, water quality

scholarly journals Chronic effects of a monogenean Ligictaluridus floridanus (Ancyrocephalidae) infection on channel catfish (Ictalurus punctatus) growth performance

2014 ◽  
Vol 83 (2) ◽  
pp. 83-87 ◽  
Author(s):  
Jaime Luis Rábago-Castro ◽  
Jesús Genaro Sánchez-Martínez ◽  
Roberto Pérez-Castañeda ◽  
María de la Luz Vázquez-Sauceda ◽  
Gonzálo Ruiz-Orozco
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Growth Performance ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Specific Growth ◽  
Fork Length ◽  
The Other ◽  
Chronic Effects ◽  
The Impact

In aquaculture, acute infections may result in fish mortality, but in many cases the chronic effects of infections are not readily detected, and may result in a decrease in fish growth. Ligictaluridus floridanus is a gill monogenean parasite prevalent on channel catfish (Ictalurus punctatus) farms in Northeastern Mexico. In order to assess and evaluate the impact of the chronic infection with this monogenean, 400 six-month-old catfish fingerlings from a hatchery, with a fork length of 10–15 cm were used in this study. Catfish naturally infected with L. floridanus (parasite abundance was 18) were divided in two groups of 200 fish. One group was treated with formalin, and infection was eliminated during a week, while the other group was not treated, and was used as a control. In total, 111 fish of each group were selected, placed into aquaria, and observed for 12 weeks. Indicators of growth such as fork length, mean weight, condition index, specific growth rate, feed conversion index and feed consumed were assessed. Significant differences (P < 0.05) between the treated group and control were found in the mean weight (127.85 g and 107.63 g) and specific growth rate (1.79 and 1.58), respectively. No significant differences were found in the other growth indicators assessed. We proved that growth performance of channel catfish is affected by infection with L. floridanus, which influence the farm economy. This is the first report on the effect of L. floridanus on the growth performance of channel catfish.

Dietary calcium requirement of channel catfish Ictalurus punctatus, reared in calcium-free water

Aquaculture ◽  
1986 ◽  
Vol 53 (3-4) ◽  
pp. 263-270 ◽  
Author(s):  
Edwin H. Robinson ◽  
Steven D. Rawles ◽  
Paul B. Brown ◽  
Harold E. Yette ◽  
L.Wayne Greene
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Free Water ◽  
Dietary Calcium ◽  
Calcium Requirement

Preparation and characterization of collagen polypeptide chelated calcium from fish bone powder of channel catfish(Ictalurus punctatus)

2012 ◽  
Vol 36 (2) ◽  
pp. 314
Author(s):  
Jian-feng LU ◽  
Chang-wei MENG ◽  
Jin LI ◽  
Zi-hui GONG ◽  
Lin LIN ◽  
...  
Keyword(s):  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Fish Bone ◽  
Bone Powder
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