Thesis
Influence of incision location on transmitter loss, healing, incision length, suture retention, and growth of juvenile Chinook salmon
Washington State University
Master of Science (MS), Washington State University
2010
Handle:
https://hdl.handle.net/2376/103170
Abstract
Many studies in fisheries research use acoustic and radio transmitters to track fish movements and estimate survival within populations. Currently, some researchers implant transmitters through an incision anterior to the pelvic girdle on the mid-ventral line (linea alba) of the fish to avoid bisecting muscle tissue. Others make an incision 2-10 mm lateral to and parallel to the linea alba to reduce disturbance of the incision site from the river bottom or tank. In the human medical literature, there is a growing trend toward “muscle-sparing” incisions that extend parallel to the underlying muscle fibers, thus preserving muscle strength and integrity. We measured differences in survival and growth, incision openness, transmitter loss, wound healing, and erythema among abdominal incisions on the linea alba, lateral and parallel to the linea alba (muscle-cutting), and extending parallel to the underlying muscle fibers (musclesparing). A total of 936 juvenile Chinook salmon (Oncorhynchus tshawyscha) were implanted with both Juvenile Salmonid Acoustic Telemetry System (JSATS) acoustic transmitters (0.43 g dry) and passive integrated transponder (PIT) tags. Fish were held at 12°C (n=468) or 20 °C (n=468) and examined once weekly over 98 days. Survival and growth did not differ among incision groups or between temperature groups. Incisions on the linea alba had less openness than muscle-cutting and muscle-sparing incisions during the first 14 days when fish were held at 12°C or 20°C. Transmitter loss was not affected by incision location by day 28 when fish were held at 12°C or 20°C. However, incisions on the linea alba had greater transmitter loss than muscle-cutting and muscle-sparing incisions by day 98 at 12°C. Relatively more incisions on the linea alba were closed during the first 28 days than muscle-cutting or muscle-sparing incisions at 12°C or 20°C. Through day 28, erythema was less prevalent on incisions on the linea alba when fish were held at 12°C but more prevalent when fish were held at 20°C, and this difference was likely related to how erythema was recorded. Results from our study will be used to improve tagging procedures for future studies using acoustic or radio transmitters.
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Details
- Title
- Influence of incision location on transmitter loss, healing, incision length, suture retention, and growth of juvenile Chinook salmon
- Creators
- Jennifer Lynne Panther
- Contributors
- Gary H. Thorgaard (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Environment, School of the (CAHNRS)
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; Pullman, Wash. :
- Identifiers
- 99900525393601842
- Language
- English
- Resource Type
- Thesis