Preprints

Filtering by Subject: Aquaculture and Fisheries Life Sciences

Industrial fishing compliance with a new marine corridor near the Galapagos Islands

Easton R White, Alex Hearn, Nicolas Moity, et al.

Published: 2023-10-30
Subjects: Agricultural and Resource Economics, Aquaculture and Fisheries Life Sciences, Life Sciences, Marine Biology

Examining fishing pressure in under-resourced marine regions still presents a challenge to understanding patterns of fishing pressure. These issues are compounded in areas with complex marine zoning regulations or those that have changed over time. Satellite-based positioning tracking of fishing vessels has helped identify ocean-wide fishing effort distribution and potential encroachments into [...]

What acoustic telemetry can and can’t tell us about fish biology

David M.P. Jacoby, Adam T Piper

Published: 2023-02-07
Subjects: Animal Sciences, Aquaculture and Fisheries Life Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Marine Biology, Zoology

Acoustic telemetry (AT) has become ubiquitous in aquatic monitoring and fish biology, conservation and management. Since the early use of active ultrasonic tracking that required researchers to follow at a distance their species of interest, the field has diversified considerably with exciting advances in both hydrophone and transmitter technology. Once a highly specialised methodology however, [...]

Evaluating top-down, bottom-up, and environmental drivers of pelagic food web dynamics along an estuarine gradient

Tanya L Rogers, Samuel M Bashevkin, Christina E Burdi, et al.

Published: 2022-12-15
Subjects: Aquaculture and Fisheries Life Sciences, Ecology and Evolutionary Biology, Life Sciences, Terrestrial and Aquatic Ecology

Identification of the key biotic and abiotic drivers within food webs is important for understanding species abundance changes in ecosystems, particularly across ecotones where there may be strong variation in interaction strengths. Using structural equation models and four decades of integrated data from the San Francisco Estuary, we investigated the relative effects of top-down, bottom-up, and [...]

Long-term trends in seasonality and abundance of three key zooplankters in the upper San Francisco Estuary

Samuel M Bashevkin, Christina E Burdi, Rosemary Hartman, et al.

Published: 2022-03-01
Subjects: Animal Sciences, Aquaculture and Fisheries Life Sciences, Biodiversity, Ecology and Evolutionary Biology, Life Sciences, Population Biology, Terrestrial and Aquatic Ecology, Zoology

Zooplankton provide critical food for threatened and endangered fish species in the San Francisco Estuary (estuary). Reduced food supply has been implicated in the Pelagic Organism Decline of the early 2000s and further changes in zooplankton abundance, seasonality, and distribution may continue to threaten declining fishes. While we have a wealth of monitoring data, we know little about the [...]

Spearing into the future: a global review of marine recreational spearfishing

Valerio Sbragaglia, Robert Arlinghaus, Daniel T. Blumstein, et al.

Published: 2021-11-23
Subjects: Animal Sciences, Aquaculture and Fisheries Life Sciences, Life Sciences

Spearfishing is practiced by a small fraction of younger recreational fishers and has received considerably less scientific attention than angling. This knowledge gap may negatively affect the ability for developing sustainable marine recreational fisheries. We address this through a global systematic review of the literature pertaining to marine spearfishing (both recreational and otherwise) and [...]

Post-release exploration and diel activity of hatchery, wild and crossbred strain brown trout in semi-natural streams

Nico Alioravainen, Jenni M. Prokkola, Alexandre Lemopoulos, et al.

Published: 2019-12-11
Subjects: Animal Sciences, Aquaculture and Fisheries Life Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences

Behaviours that are adaptive in captivity may be maladaptive in the wild and hence compromise after-release survival of hatchery fish. Understanding behavioural differences displayed straight after the release could help improving hatchery protocols and developing behavioural tests for assessing the fitness of fish reared for releases. We characterized the post-release behaviour in two [...]

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