A comparative analysis of lethal and non-lethal fish sampling techniques
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Date
2020-07
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FERGUSON, RACHEL. A comparative analysis of lethal and non-lethal fish sampling techniques.
(Under the direction of Dr. Tamara Pandolfo.)
Muscle tissue samples from fish have long been used to analyze the presence of contaminants
in fish populations. However, muscle tissue collection is a lethal sampling technique. The use of
lethal methods has caused concerns over collecting samples from endangered species as well
as having a negative impact on ecosystems. The purpose of this literature review was to
summarize the current knowledge of non-lethal fish sampling methods and to determine how
they compare to the traditional lethal methods of sampling. Most studies used fin clips as the
non-lethal sampling method, however, other studies utilized mucus swabs, scales, and blood
samples. The use of non-lethal methods has proven to be a useful alternative to lethal
methods, and results of published studies indicate that non-lethal and lethal sampling methods
are generally comparable. Fin clipping is the most preferable non-lethal method due to minimal
harm to the organism and the regeneration of clipped fins. More research needs to be done in
order to provide further information on the efficacy legitimacy of non-lethal sampling
techniques.
