Author:
Koeberle Alexander L.,Pearsall Webster,Hammers Brad E.,Mulhall Daniel,McKenna James E.,Chalupnicki Marc,Sethi Suresh A.
Abstract
AbstractEstimates of juvenile survival are critical for informing population dynamics and the ecology of fish, yet these demographic parameters are difficult to measure. Here, we demonstrate that advances in animal tracking technology provide opportunities to evaluate survival of juvenile tagged fish. We implemented a whole-lake telemetry array in conjunction with small acoustic tags (including tags < 1.0 g) to track the fate of stocked juvenile cisco (Coregonus artedi) as part of a native species restoration effort in the Finger Lakes region of New York, USA. We used time-to-event modeling to characterize the survival function of stocked fish, where we infer mortality as the cessation of tag detections. Survival estimates revealed distinct stages of juvenile cisco mortality including high immediate post-release mortality, followed by a period of elevated mortality during an acclimation period. By characterizing mortality over time, the whole-lake biotelemetry effort provided information useful for adapting stocking practices that may improve survival of stocked fish, and ultimately the success of the species reintroduction effort. The combination of acoustic technology and time-to-event modeling to inform fish survival may have wide applicability across waterbodies where receiver arrays can be deployed at scale and where basic assumptions about population closure can be satisfied.
Publisher
Springer Science and Business Media LLC
Reference66 articles.
1. Brown, C. & Day, R. L. The future of stock enhancements: lessons for hatchery practice from conservation biology. Fish Fish. 3, 79–94 (2002).
2. Hilborn, R. & Walters, C. J. Quantitative fisheries stock assessment: Choice, dynamics, and uncertainty (Springer Science & Business Media, 2013).
3. Pine, W. E., Pollock, K. H., Hightower, J. E., Kwak, T. J. & Rice, J. A. A review of tagging methods for estimating fish population size and components of mortality. Fisheries. 28, 10 (2003).
4. Sandford, M., Castillo, G. & Hung, T. C. A review of fish identification methods applied on small fish. Rev. Aquac. 12, 542–554 (2020).
5. Beamish, R. J. & Mahnken, C. A critical size and period hypothesis to explain natural regulation of salmon abundance and the linkage to climate and climate change. Prog. Oceanogr. 49(1–4), 423–437 (2001).