McNenny State Fish Hatchery, South Dakota Game, Fish and Parks, Trout Loop Spearfish, South Dakota, United States
Research Article
Micro-acoustic Transmitter Implantation Impacts Juvenile Rainbow Trout Oncorhynchus mykiss Growth, Hematocrit and Splenosomatic Index
Author(s): Alayna Wagner, Nathan Huysman*, Jeremy Kientz, Jill M. Voorhees and Michael E. Barnes
Micro-acoustic transmitters are becoming increasingly
popular in fisheries management. This study examined the
short-term effects of micro-transmitter surgical insertion on
juvenile rainbow trout Oncorhynchus mykiss (mean (SE)
initial weight=23.9 (1.8) g, length=124 (2) mm). One group
of trout were anesthetized and surgically implanted with
micro-acoustic transmitters (tag-to-body ratio=2.94 (0.07)
%). A second control group only underwent anesthesia. Ten
fish from each group were placed in one of five
experimental tanks for eight weeks, with weight, length,
hematocrit, hepatosomatic index, viscerosomatic index and
splenosomatic index data collected weekly. Survival in the
untagged control group was 100%, which was significantly
greater than 91.8% in the tagged group. Tag retention was
71%. Total lengths and weights were significantly.. View More»
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