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UID:29206@events.unl.edu
DTSTAMP:20080407T092854
SUMMARY:M.S. Defense Seminar
DESCRIPTION:Jennifer Hogue; Advisor, Dr. Mark Pegg\n"Oxygen Consumption Ra
 tes for Bighead and Silver Carp in Relation to Life-Stage, Temperature an
 d Activity Level"\nBighead carp Hypophthalmythys nobilis and silver carp 
 H. molitrix, collectively known as Asian carp, are fast-growing generalis
 ts, highly fecund, and are effective invaders of new ecosystems.  Recentl
 y, their populations have exploded in the central rivers of the United St
 ates and are now spreading toward the Great Lakes.  This range expansion 
 has raised concern for groups that rely on the Great Lakes for their many
  natural resources.  As part of a larger project in conjunction with the 
 Illinois Natural History Survey, oxygen consumption rates (OCR) were meas
 ured using established respirometry methods for water temperatures (5, 10
 , 15, 20, and 25°C), life stages (juvenile fish < 50-cm, and adult fish 
 >50-cm), and activity levels (0.3-m/s, and 0.6-m/s). Trials were conducte
 d over a one hour period using a static respirometer to measure resting r
 espiration rates and a swim chamber to conduct active trials.  The relati
 on between OCR and body mass for both species was allometric, with body m
 ass being strongly correlated to OCR (r=0.92 (bighead carp), r=0.63 (silv
 er carp)). The calculated b value, a coefficient used to correct mass rel
 ated bias, for bighead carp was 0.7, while the calculated b value for sil
 ver carp was 0.76. Temperature significantly affected OCR in both species
 ; while life-stage and activity level did not.  Oxygen consumption rates 
 did not differ between species (P
LOCATION:HARDIN HALL Room 901 Hardin Hall
URL:http://events.unl.edu/snr/2008/04/11/29206/
DTEND;TZID=US/Central:20080411T150000
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