Preprints

Filtering by Subject: Aquaculture and Fisheries Life Sciences

Japanese mayfly family classification with a vision transformer model

Yuichi Iwasaki, Hiroko Arai, Akihiro Tamada, et al.

Published: 2024-02-10
Subjects: Aquaculture and Fisheries Life Sciences, Artificial Intelligence and Robotics, Biodiversity, Civil and Environmental Engineering, Computer Sciences, Databases and Information Systems, Engineering, Environmental Health and Protection, Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Terrestrial and Aquatic Ecology

Benthic macroinvertebrates are a frequently used indicator group for biomonitoring and biological assessment of river ecosystems. However, their taxonomic identification is laborious and requires special expertise. In this study, we aimed to assess the capability of a vision transformer (ViT) model for family-level identification of mayflies (order Ephemeroptera). Specifically, we focused on [...]

Hybridization potential of brown trout, with particular reference to invaded environments

Craig F Purchase, Connor Hanley, Tyler H. Lantiegne, et al.

Published: 2024-01-25
Subjects: Aquaculture and Fisheries Life Sciences, Biodiversity, Ecology and Evolutionary Biology, Evolution, Life Sciences, Marine Biology, Population Biology

Hybridization is a complex process beginning with the mating of two species. However, hybrid offspring frequency does not predict hetero-specific mating frequency, as post-mating, both pre-zygotic and post-zygotic barriers influence their occurrence. Post-zygotic outbreeding depression usually results in poor embryo-juvenile survival or the production of sterile hybrid offspring. Females have [...]

Quantifying clearance rates of restored shellfish reefs using modular baskets

Maja Paulina Andersson, Karen L Cheney, Robbie Porter, et al.

Published: 2023-12-08
Subjects: Animal Experimentation and Research, Aquaculture and Fisheries Life Sciences, Biology, Ecology and Evolutionary Biology, Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Life Sciences, Marine Biology, Oceanography and Atmospheric Sciences and Meteorology, Research Methods in Life Sciences, Terrestrial and Aquatic Ecology, Water Resource Management, Zoology

Shellfish reefs are one of the most degraded marine ecosystems, prompting substantial efforts to restore them. While biodiversity gains of restored reefs are well documented, other ecosystem services such as water filtration remain overlooked. We tested whether modular baskets could provide a practical way to measure water filtration by invertebrate communities on restored reefs and assess [...]

Historical dataset details the distribution, extent and form of lost Ostrea edulis reef ecosystems.

Ruth H. Thurstan, Hannah McCormick, Joanne Preston, et al.

Published: 2023-12-07
Subjects: Aquaculture and Fisheries Life Sciences, Biodiversity, Marine Biology, Terrestrial and Aquatic Ecology

Ocean ecosystems have been subjected to anthropogenic influences for centuries, but the scale of past ecosystem changes is often unknown. For centuries, the European flat oyster (Ostrea edulis), an ecosystem engineer providing biogenic reef habitats, was a culturally and economically significant source of food and trade. These reef habitats are now functionally extinct, and almost no memory of [...]

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: 2022-03-02
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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