Journal article
A Comparison of Nonlethal Methods for Evaluating the Reproductive Status of Female Coastal Cutthroat Trout
Journal of fish and wildlife management, Vol.5(1), pp.183-190
06/01/2014
Handle:
https://hdl.handle.net/2376/107358
Abstract
Knowledge of the state of sexual development is important for management of coastal cutthroat trout Oncorhynchus clarkii clarkii, a fish species targeted for sport fishing throughout its range along the Pacific coast of North America. The purpose of this study was to compare the nonlethal methods of ultrasound imaging, body lipid content, and the measurement of plasma vitellogenin and estradiol levels for assessing the reproductive status of female coastal cutthroat trout. This was examined in a population living in Florence Lake, Alaska, during the spring–early autumn period of the annual reproductive cycle. All methods, except body lipid content, were effective at determining maturity status in either the spring (ultrasound imaging), or spring and autumn (plasma vitellogenin and estradiol). These approaches could be useful for conducting nonlethal assessments of length- or age-at-maturity on populations of coastal cutthroat trout that are small, have conservation concerns, or are heavily utilized by anglers.
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Details
- Title
- A Comparison of Nonlethal Methods for Evaluating the Reproductive Status of Female Coastal Cutthroat Trout
- Creators
- Peter D BangsJames J Nagler - University of Idaho
- Publication Details
- Journal of fish and wildlife management, Vol.5(1), pp.183-190
- Academic Unit
- School of Biological Sciences
- Identifiers
- 99900546856701842
- Language
- English
- Resource Type
- Journal article