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To determine the effects of surgical implantation method and temperature on mortality and transmitter loss, we compared two antenna placements (trailing antenna versus shielded needle) and two suture materials (absorbable versus nonabsorbable) in hybrid striped bass Morone saxitilis x Morone chrysops (227-410 mm total length) that had been surgically implanted with simulated transmitters and held at high (22-29??C) and low (12-18??C) temperatures for 120 d. Fish were individually examined after 7, 30, 60. 90. and 120 d to evaluate suture and wound condition as well as transmitter loss. Neither suture material nor antenna placement affected transmitter loss, mortality, or growth at either high or low temperatures. Absorbable sutures were lost more quickly than were nonabsorbable sutures, but they persisted beyond incision closure at both high and low temperatures. At high temperatures, 50% suture loss occurred by 30 d for absorbable sutures and by 60 d for nonabsorbable sutures. Mortality occurred only at high temperatures but was delayed and was likely caused by peritoneal infection. Transmitter loss was not significant; it occurred only in the low-temperature trial and was caused by pressure necrosis at the incision rather than by suture failure. Temperature significantly affected all responses examined in this study. Significant irritation, infection, and mortality occurred in all treatment groups at high temperatures.
Additional Publication Details
Effects of implantation method and temperature on mortality and loss of simulated transmitters in hybrid striped bass