A laboratory evaluation of tagging-related mortality and tag loss in juvenile humpback chub
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Abstract
We quantified tag retention, survival, and growth in juvenile, captive-reared Humpback Chub Gila cypha marked with three different tag types: (1) Biomark 12.5-mm, 134.2-kHz, full duplex PIT tags injected into the body cavity with a 12-gauge needle; (2) Biomark 8.4-mm, 134.2-kHz, full duplex PIT tags injected with a 16-gauge needle; and (3) Northwest Marine Technology visible implant elastomer (VIE) tags injected under the skin with a 29-gauge needle. Estimates of tag loss, tagging-induced mortality, and growth were evaluated for 60 d with each tag type for four different size-groups of fish: 40–49 mm, 50–59 mm, 60–69 mm, and 70–79 mm TL. Total length was a significant predictor of the probability of PIT tag retention and mortality for both 8-mm and 12-mm PIT tags, and the smallest fish had the highest rates of tag loss (12.5–30.0%) and mortality (7.5–20.0%). Humpback Chub of sizes 40–49 mm TL and tagged with VIE tags had no mortality but did have a 17.5% tag loss. Growth rates of all tagged fish were similar to controls. Our data indicate Humpback Chub can be effectively tagged using either 8-mm or 12-mm PIT tags with little tag loss or mortality at sizes as low as 65 mm TL.
Suggested Citation
Ward, D.L., Persons, W.R., Young, K., Stone, D.M., Van Haverbeke, R., Knight, W.R., 2015, A laboratory evaluation of tagging-related mortality and tag loss in juvenile humpback chub: North American Journal of Fisheries Management, v. 35, no. 1, p. 135-140, https://doi.org/10.1080/02755947.2014.986345.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A laboratory evaluation of tagging-related mortality and tag loss in juvenile humpback chub |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1080/02755947.2014.986345 |
| Volume | 35 |
| Issue | 1 |
| Publication Date | February 05, 2015 |
| Year Published | 2015 |
| Language | English |
| Publisher | American Fisheries Society |
| Publisher location | Lawrence, KS |
| Contributing office(s) | Southwest Biological Science Center |
| Description | 6 p. |
| First page | 135 |
| Last page | 140 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |