Validation of Endoscopy for Determination of Maturity in Small Salmonids and Sex of Mature Individuals
作者： Erica A. Swenson , Amanda E. Rosenberger , Philip J. Howell
DOI: 10.1577/T06-193.1
关键词: Anatomy 、 Sex ratio 、 Biology 、 Endoscopy 、 Population 、 Maturity (psychological) 、 Physiology 、 Fish measurement 、 Trout 、 Salvelinus 、 Electrofishing
摘要: Abstract Fish maturity status, sex ratio, and age size at first are important parameters in population assessments life history studies. In most empirical studies of these variables, fish sacrificed dissected to obtain data. However, status the mature individuals can be determined by inserting an endoscope through a small incision body cavity wall viewing gonads. The objective this study was evaluate endoscopy field setting for gonadal assessment stream-resident forms salmonids that sizes. Ninety-one brook trout Salvelinus fontinalis (60–210 mm fork length [FL]) were obtained via electrofishing anesthetized. Maturity with endoscope. After recovery, euthanized anesthetic validate endoscopic classification. Endoscopy correctly 96% tr...
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