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eRNA Reveals Real-Time Signals of Freshwater Fish Population Biomass and Total Abundance

Author(s): Beaulieu J; Morgado-Gamero WB; Fraser DJ; Cristescu ME; Derry AM;

Biomass and abundance data are critical for ecosystem monitoring and management of fish populations, yet their acquisition represents a growing challenge as anthropogenic pressures intensify the need for monitoring. Environmental DNA (eDNA) has the potential to provide cost-effective biomass and abundance estimations, but its high molecular stability ma ...

Article GUID: 42233738


On traits matching and the modular organization of food web and occurrence networks

Author(s): Borzone Mas D; Scarabotti PA; Vaschetto PA; Alvarenga P; Vazquez M; Arim M;

Modularity and nestedness have been observed recurrently across different ecological networks, including food webs and occurrence networks. These patterns emerge from species-level processes, where interactions and occurrences are determined by niche-based and/or abundance-based mechanisms. Abundance-based processes promote nested networks with gradient ...

Article GUID: 41840807


Neural topic modeling on hyperspheres: Spherical representation learning with von Mises-Fisher mixtures

Author(s): Guo D; Luo Z; Bouguila N; Fan W;

Neural topic models (NTMs) based on variational autoencoders (VAEs) have emerged as a scalable and flexible alternative to classical probabilistic models for uncovering latent thematic structures in text corpora. However, most existing NTMs either overlook the geometric structure of word embeddings or rely on Euclidean priors that are poorly aligned wit ...

Article GUID: 41791177


Cross-species evaluation of TANGO2 homologs, including HRG-9 and HRG-10 in em Caenorhabditis elegans, /em challenges a proposed role in heme trafficking

Author(s): Sandkuhler SE; Youngs KS; Gottipalli O; Owlett LD; Bandora MB; Naaz A; Kim E; Wang L; Wojtovich A; Gupta V; Sacher M; Mackenzie SJ;

Mutations in the TANGO2 gene are associated with a severe neurometabolic disorder in humans, often presenting with life-threatening metabolic crisis. However, the function of TANGO2 protein remains unknown. It has recently been proposed that TANGO2 transports heme within and between cells, from ...

Article GUID: 41504601


Intraspecific complexity in mercury contamination of two harvested fishes revealed by genetics: Food security and conservation implications

Author(s): Gibelli J; Michaelides S; Won H; Chamlian B; Bampfylde C; Maclean B; Giroux P; Gray QZ; Voyageur M; Jeon HB; Bouchard R; Fraser DJ;

Contaminants in harvested species can pose serious concerns for health and food security. However, the risks of contaminant exposure can be challenging to track as many species migrate extensively between breeding and feeding environments and usually form genetically distinct populations. Such ...

Article GUID: 41380599


Strengthening community-based fisheries monitoring programs with Indigenous perspectives

Author(s): Dewan K; Mulrennan ME; Georgekish E;

Community-based monitoring (CBM) programs are increasingly recognized as essential for adaptive environmental stewardship. Yet, the CBM literature often highlights successful cases and privileges evaluations by external experts over those of community members themselves. To address this gap, we drew on insights from 23 semistructured interviews with Cre ...

Article GUID: 41332192


Post-subsidy Era: Potential for Carbon Pricing in Industrial Fisheries among Global Major Fishing Countries

Author(s): Peng H; Hao J; Lyu L; Wan S; An C;

Industrial fishing's harmful subsidies fuel both a fish stock crisis and rising greenhouse gas emissions, even as calls for a global ban by the World Trade Organization persist amid slow progress. This study employs the framework of climate policy stringency assessment to examine fisheries subsidy reform through a carbon pricing lens. Using emission ...

Article GUID: 40737555


Disentangled representation learning for multi-view clustering via von Mises-Fisher hyperspherical embedding

Author(s): Li Z; Luo Z; Bouguila N; Su W; Fan W;

Multi-view clustering has gained significant attention due to its ability to integrate data from diverse perspectives, frequently outperforming single-view approaches. However, existing methods often assume a Gaussian distribution within the latent embedding space, which can degrade performance when handling high-dimensional data or data with complex, n ...

Article GUID: 40664160


Genomics-Enabled Mixed-Stock Analysis Uncovers Intraspecific Migratory Complexity and Detects Unsampled Populations in a Harvested Fish

Author(s): Gibelli J; Won H; Michaelides S; Jeon HB; Fraser DJ;

The contributions of distinct populations to annual harvests provide key insights to conservation, especially in migratory species that return to specific reproductive areas. In this context, genetic stock identification (GSI) requires reference samples from source populations to assign harvested individuals, yet sampling might be challenging as reprodu ...

Article GUID: 39995301


Development of SNP Panels from Low-Coverage Whole Genome Sequencing (lcWGS) to Support Indigenous Fisheries for Three Salmonid Species in Northern Canada

Author(s): Beemelmanns A; Bouchard R; Michaelides S; Normandeau E; Jeon HB; Chamlian B; Babin C; Hénault P; Perrot O; Harris LN; Zhu X; Fraser D; Bernatchez L; Moore JS;

Single nucleotide polymorphism (SNP) panels are powerful tools for assessing the genetic population structure and dispersal of fishes and can enhance management practices for commercial, recreational and subsistence mixed-stock fisheries. Arctic Char (Salvelinus alpinus), Brook Trout (Salvelinu ...

Article GUID: 39552382


FishSegSSL: A Semi-Supervised Semantic Segmentation Framework for Fish-Eye Images

Author(s): Paul S; Patterson Z; Bouguila N;

The application of large field-of-view (FoV) cameras equipped with fish-eye lenses brings notable advantages to various real-world computer vision applications, including autonomous driving. While deep learning has proven successful in conventional computer vision applications using regular perspective images, its potential in fish-eye camera contexts r ...

Article GUID: 38535151


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