Documented predation of pallid sturgeon Scaphirhynchus albus (Forbes & Richardson, 1905) by flathead catfish Pylodictis olivaris (Rafinesque, 1818)

2015 ◽  
Vol 31 (5) ◽  
pp. 843-845 ◽  
Author(s):  
K. D. Steffensen ◽  
S. A. Lundgren ◽  
T. W. Huenemann
Keyword(s):  
Pylodictis Olivaris ◽  
Flathead Catfish ◽  
Pallid Sturgeon ◽  
Scaphirhynchus Albus

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
International Symposium ◽  
Size Structure ◽  
Pylodictis Olivaris ◽  
Social Event ◽  
Conservation Ecology ◽  
Party Size ◽  
Catch And Release ◽  
Flathead Catfish ◽  
Creel Survey ◽  
Total Effort

<em>Abstract</em>.—Hand grabbing for catfish has been practiced in Mississippi for many years; however, few studies have addressed this fishing technique. Ross Barnett Reservoir is a<em> Abstract</em>.—Hand grabbing for catfish has been practiced in Mississippi for many years; however, few studies have addressed this fishing technique. Ross Barnett Reservoir is a 13,360-ha impoundment located in central Mississippi that supports a substantial hand grabbing fishery. A roving creel survey was conducted during the 2007 and 2008 Mississippi hand grabbing season (May 1–July 15). Objectives were to estimate catch, harvest, and effort of hand grabbers and to solicit information concerning techniques used by these anglers. A total of 37 parties was interviewed, consisting of 150 total anglers. Seventy percent of the parties interviewed targeted flathead catfish <em>Pylodictis olivaris</em>. Ninety-five percent of the parties used a probe, and all parties fished boxes located at depths of 1–2 m. Average party size was four anglers, indicating that hand grabbing is a social event. For 2007 and 2008, anglers spent an estimated 4,424 and 5,259 h hand grabbing, respectively. An estimated 3,313 and 2,589 catfish were harvested in 2007 and 2008, respectively. Based on size structure of harvested catfish, hand grabbing anglers at Ross Barnett Reservoir do not appear to be size-selective. Most anglers were harvest-oriented, with catch-and-release estimates making up only 12% and 9%, respectively. Future creel surveys should be directed at the total effort allocated toward catfishing, in an effort to determine the effect of hand grabbing on Ross Barnett Reservoir.

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
International Symposium ◽  
Body Condition ◽  
Relative Abundance ◽  
Habitat Restoration ◽  
Missouri River ◽  
Natural State ◽  
Pylodictis Olivaris ◽  
Conservation Ecology ◽  
Flathead Catfish ◽  
Growth Increments

<em>Abstract</em>.—An assessment of the flathead catfish <em>Pylodictis olivaris</em> population in the Missouri River bordering Nebraska was conducted between 1997 through 2008. The Missouri River was divided into four sections based on physical and geomorphologic uniqueness (upper unchannelized, lower unchannelized, upper channelized, and lower channelized). Two sections were sampled annually, and each section was sampled on alternate years. Boat electrofishing collected 12,846 fish in 83.5 h from 701 sampling stations. Most flathead catfish sampled (98%) were less than 510 mm total length (quality length), with significantly more fish captured in channelized than unchannelized reach. Fish from channelized sections also had higher mean total lengths and larger growth increments but were in poorer body condition than those from unchannelized sections. Low relative abundance of flathead catfish in the upper unchannelized section and scarcity of large individuals were attributed to poor habitat conditions. Habitat restoration along with restoring natural riverine processes would return the river to a more natural state and would not only benefit flathead catfish, but other native Missouri River fishes as well.

The effect of diet on growth and survival of first feeding pallid sturgeon Scaphirhynchus albus

2011 ◽  
Vol 27 (2) ◽  
pp. 755-760 ◽  
Author(s):  
K. M. Kappenman ◽  
M. Toner ◽  
J. Illgen ◽  
F. T. Barrows
Keyword(s):  
Growth And Survival ◽  
First Feeding ◽  
Pallid Sturgeon ◽  
Scaphirhynchus Albus

Gastroenteropancreatic Hormones (Insulin, Glucagon, Somatostatin, and Multiple Forms of PYY) from the Pallid Sturgeon, Scaphirhynchus albus (Acipenseriformes)

2000 ◽  
Vol 120 (3) ◽  
pp. 353-363 ◽  
Author(s):  
Joseph B. Kim ◽  
Vibeke Gadsbøll ◽  
Jonathan Whittaker ◽  
Bruce A. Barton ◽  
J.Michael Conlon
Keyword(s):  
Multiple Forms ◽  
Pallid Sturgeon ◽  
Scaphirhynchus Albus
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