Preprints
Filtering by Subject: Aquaculture and Fisheries Life Sciences
Behavioural tactics across thermal gradients align with partial morphological divergence in brook charr
Published: 2025-07-16
Subjects: Animal Studies, Aquaculture and Fisheries Life Sciences
Understanding how animals balance environmental constraints is essential for predicting species persistence under climate change. In thermally stratified lakes, cold-water fishes such as brook charr (Salvelinus fontinalis) must navigate vertical gradients in temperature and oxygen to optimize foraging while avoiding physiological stress. We hypothesized that individuals would exhibit behavioral [...]
Generalized graphical mixed models connect ecological theory with widely used statistical models
Published: 2025-06-07
Subjects: Applied Statistics, Aquaculture and Fisheries Life Sciences, Biodiversity, Environmental Sciences, Multivariate Analysis
Ecological dynamics are analyzed across multiple sites, times, and variables. Here, we introduce the family of generalized graphical mixed models (GGMMs) and show that it extends structural equation, generalized additive, and generalized linear mixed models. GGMMs represent ecological systems using a mathematical graph, where each analytic unit (node for each site-time-variable) has a direct [...]
Oxygen supersaturation has negligible effects on warming tolerance in aquatic ectotherms
Published: 2025-05-16
Subjects: Aquaculture and Fisheries Life Sciences, Ecology and Evolutionary Biology, Marine Biology
Under the midday sun when photosynthesizers are producing oxygen, shallow aquatic ecosystems can become supersaturated with oxygen (>100% air saturation) while they simultaneously peak in water temperature. It has been suggested that oxygen supersaturation could protect water-breathing animals from mortality during heatwaves because of the potential role of oxygen in governing thermal [...]
Mystery of the disappearing dogfish: transboundary analyses reveal steep population declines across the Northeast Pacific with little evidence for regional redistribution
Published: 2025-03-11
Subjects: Aquaculture and Fisheries Life Sciences, Natural Resources Management and Policy, Population Biology
Quantifying broad-scale population trends and distribution change is critical for effective management and conservation of marine species, particularly under climate change. However, fragmented regional survey data often hinder such efforts for transboundary populations. A prime example is Pacific Spiny Dogfish (Squalus suckleyi, Squalidae), a small shark with a remarkably slow life history and [...]
Monogenea on exotic Indian freshwater fish. 8. Co-translocation of Cichlidogyrus tilapiae (Monogenea, Dactylogyridae) with pindani Chindongo socolofi (Cichliformes, Cichlidae), the first report of this parasite genus in India
Published: 2025-02-08
Subjects: Aquaculture and Fisheries Life Sciences, Life Sciences, Parasitology, Terrestrial and Aquatic Ecology, Zoology
Chindongo socolofi (Cichliformes, Cichlidae) is a popular freshwater ornamental fish from Lake Malawi in Africa. Although identifying parasites associated with the global ornamental trade is critical for developing biosecurity practices, little is known about the parasite fauna of C. socolofi. Therefore, this study sought to determine what monogenean parasites C. socolofi harbours in India. Adult [...]
Environmental RNA mitigates fish ghosts related to fish feeds for aquaculture in molecular ecological survey in a bay.
Published: 2024-12-20
Subjects: Aquaculture and Fisheries Life Sciences, Biodiversity, Genomics, Terrestrial and Aquatic Ecology
The use of environmental DNA for molecular ecological surveys has become widely utilized in ecological assessments of various water environments, from rivers to coastal and marine areas. However, it is important to consider the scenarios of potential contamination of environmental nucleic acids in interpreting the results. In this study, we analyzed the fish species present in the feed that may [...]
Seasonal Migrants and Traditional Ecological Knowledge in a Region of Risk: The Pulse Seine Fisheries in Limfjorden, Denmark, c. 1740-1860
Published: 2024-07-31
Subjects: Aquaculture and Fisheries Life Sciences, Arts and Humanities, Biodiversity, Economic History, Environmental Studies, Marine Biology, Other Arts and Humanities, Terrestrial and Aquatic Ecology
This article presents the commercial scale and organization of the Danish pulse seine eel fishery in the Limfjord before the advent of modern offshore fisheries. Partly, for environmental concerns, the pulse seine fishery was tightly regulated, with every seine having to be checked and certified by the local district bailiffs. Here, we present the first in-depth analysis of all preserved [...]
Advancing single species abundance models: robust models for predicting abundance using co-occurrence from communities
Published: 2024-05-10
Subjects: Aquaculture and Fisheries Life Sciences, Biology
Accurate estimates of abundance are crucial for successful conservation and management. However, gathering abundance data is costly. Species Abundance Models (SAMs) are increasingly used to predict variation in abundance for resource management for single species, but collecting enough relevant environmental information to build effective SAMs can often be challenging. Species co-occurrence [...]
Lumpfish, Cyclopterus lumpus, distribution in the Gulf of Maine, USA: observations from fisheries independent and dependent catch data
Published: 2024-03-29
Subjects: Aquaculture and Fisheries Life Sciences, Marine Biology, Population Biology
The Gulf of Maine (GoM) is one of the fastest-warming parts of the world’s oceans. Some species’ distributional shifts have already been documented, especially for commercially-important species. Less is known about species that are not currently exploited but may become so in the future. As a case study into these issues, we focus on lumpfish (Cyclopterus lumpus) because of the recognized and [...]
Japanese mayfly family classification with a vision transformer model
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
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
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 among the most degraded ecosystems globally, prompting substantial efforts to restore them. While biodiversity gains of restored reefs are well documented, other ecosystem services such as water filtration remain poorly quantified. We present a novel way of measuring water filtration by restored reefs using modular restoration structures called Robust Oyster Baskets (ROB 400). [...]
Historical dataset details the distribution, extent and form of lost Ostrea edulis reef ecosystems.
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
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
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, [...]