A review of migratory Alosidae marine ecology in the northwest Atlantic.

Migratory animals play a crucial role in connecting distinct habitats by transferring matter and energy across ecosystem boundaries. In the North Atlantic, anadromous species exemplify this through their movement between freshwater and marine environments. Alosids, including species such as alewife (Alosa pseudoharengus), blueback herring (Alosa aestivalis), and American shad (Alosa sapidissima), exhibit this migratory behavior to maximize growth and fecundity and are, therefore, vital components of Atlantic coastal ecosystems.

Some ecological aspects of Monogeneans (Platyhelminthes) ectoparasites of Enteromius guirali Thominot, 1886 (Pisces: Cyprinidae) from Cesala River in Cameroon.

Fish are exposed to various parasites such as monogeneans which are flatworms that preferentially affect the gills and skin of these hosts. This study represents the first investigation concerning the distribution of monogenean infracommunities of Enteromius guirali in Cameroon. A total of 100 fish were collected from Cesala River and preserved in 8% formalin solution.

Optimizing Eurasian Perch Production: Innovative Aquaculture in Earthen Ponds Using RAS and RAMPS-Economic Perspective.

Aquaculture in rural areas, carried out in accordance with current EU requirements, aims to contribute significantly to the conservation of the biodiversity of aquatic resources, the protection of which is a prerequisite for sustainable economic and social development. The objective of this study was to present the conceptual and technical framework and to analyze the costs and profitability of producing the consumer-attractive Eurasian perch ( L.) based on the untapped potential of hatchery infrastructure and dedicated earthen ponds for common carp ( L.

A footworm in the door: revising Onchocerca phylogeny with previously unknown cryptic species in wild North American ungulates.

Onchocerca is an important genus of vector-borne filarial nematodes that infect both humans and animals worldwide. Many Onchocerca spp., most of medical and veterinary health relevance, are the focus of a variety of diagnostic and molecular research.

Thematic Layers of Genomic Susceptibility for Conservation Monitoring.

Population genomics has great potential to inform applied conservation management and associated policy. However, the bioinformatic analyses and interpretation of population genomic datasets can be daunting and difficult to convey to nonspecialists, including on-the-ground conservationists that work with many state, federal and international agencies. We think that individual population genomic metrics of interest can be interpolated and ultimately distilled into thematic GIS layers that represent spatiotemporal genomic potential (or conversely, susceptibility) in conservation monitoring.

Understanding the effects of perfluorobutane sulfonate in zebrafish larvae model (Danio rerio): Insights into potential ecotoxicological risks and human health.

Perfluorobutane sulfonate (PFBS) is a synthetic organic molecule that belongs to the per and polyfluoroalkyl substances family. Due to its unique physicochemical characteristics, PFBS has been extensively used in consumer products and industries. However, its increasing usage and chemical stability cause environmental pollution and bioaccumulation.

A chromosome-level genome assembly of the mountain lion, Puma concolor.

Mountain lions, Puma concolor, are widespread and adaptable carnivores. However, due to their large home ranges and long distance dispersals, they are strongly impacted by habitat fragmentation, which results in small and isolated populations. Genomic analyses play an important role in understanding and predicting the impacts of increased isolation of populations, such as decreased genetic diversity and increased levels of inbreeding.

A critical review on heavy metal contamination in aquatic food webs by edible fish species: a special case concerning Bangladesh.

Heavy metals (HMs) are ubiquitous in terrestrial and aquatic environments due to unplanned industrial waste discharge, the release of untreated wastewater, and improper mining activities. In particular, the concentrations of HMs are found to be higher in aquatic environments. As a result, the aquatic biota was heavily affected by HM contamination.

The logic of conventional and reversed Bateman gradients.

The Bateman gradient is a central concept in sexual selection theory that relates reproductive success to mate number, with important consequences for sex-specific selection. The conventional expectation is that Bateman gradients are steeper in males than females, implying that males benefit more from multiple mating than females do. This claim is supported by much empirical evidence as well as mathematical modelling.

Evolution: Repeat adaptation in the hot spring.

Live-bearing fish have repeatedly adapted to life in sulfidic hot springs. A new study finds consistent changes in morphology, physiology and gene expression but no repeated genomic adaptation. This raises further questions about genetic redundancy, polygenic adaptation and the broader significance of repeated adaptation in natural systems.

Removal of sequencing adapter contamination improves microbial genome databases.

Advances in assembling microbial genomes have led to growth of reference genome databases, which have been transformative for applied and basic microbiome research. Here we show that published microbial genome databases from humans, mice, cows, pigs, fish, honeybees, and marine environments contain significant sequencing-adapter contamination that systematically reduces assembly accuracy and contiguousness. By removing the adapter-contaminated ends of contiguous sequences and reassembling MGnify reference genomes, we improve the quality of assemblies in these databases.

Complexity and weak integration promote the diversity of reef fish oral jaws.

Major trade-offs often manifest as axes of diversity in organismal functional systems. Overarching trade-offs may result in high trait integration and restrict the trajectory of diversification to be along a single axis. Here, we explore the diversification of the feeding mechanism in coral reef fishes to establish the role of trade-offs and complexity in a spectacular ecological radiation.

Shoal size as a key variable in fish behavioral ecotoxicology: an example using sertraline.

A significant limitation of behavioral ecotoxicology is the challenge of obtaining reproducible results due to a wide range of testing conditions. In particular, shoal size affects almost all aspects of fish behavior, but is rarely considered as a factor in ecotoxicological studies. In the present study, we compared the swimming and antipredator responses of different sized shoals of Arabian killifish (Aphaniops stoliczkanus) after exposure to environmentally realistic concentrations of the antidepressant medication sertraline.

Prioritising non-native fish species for management actions in three Polish rivers using the newly developed tool-dispersal-origin-status-impact scheme.

Background: Biological invasions are a major threat to global biodiversity, with freshwater ecosystems being among the most susceptible to the successful establishment of non-native species and their respective potential impacts. In Poland, the introduction and spreading of non-native fish has led to biodiversity loss and ecosystem homogenisation.

Methods: Our study applies the Dispersal-Origin-Status-Impact (DOSI) assessment scheme, which is a population-level specific assessment that integrates multiple factors, including dispersal mechanisms, origin, status, and impacts, providing a nuanced framework for assessing invasion risks at local and regional levels.

A checklist of the monogenean parasites (Platyhelminthes) of fishes of northeast India.

A checklist was generated by compiling a database of all available published accounts of the monogenean parasites of fish from northeast India. The checklist is presented as a host-parasite list, including 35 nominal species from 14 genera and 3 families of monogeneans. Ten of the monogenean species listed here have been described from native fishes in the region, while 25 had previously been described from other parts of India.

Genomic Vulnerability to Climate Change of an Australian Migratory Freshwater Fish, the Golden Perch (Macquaria ambigua).

Genomic vulnerability is a measure of how much evolutionary change is required for a population to maintain optimal genotype-environment associations under projected climates. Aquatic species, and in particular migratory ectotherms, are largely underrepresented in studies of genomic vulnerability. Such species might be well equipped for tracking suitable habitat and spreading diversity that could promote adaptation to future climates.

Urbanization reduces fish taxonomic and functional diversity while increases phylogenetic diversity in subtropical rivers.

Urbanization is considered as a major cause of widespread biodiversity loss in freshwater ecosystems. However, multidimensional fish diversity patterns driven by urbanization in subtropical rivers are still unclear. We studied fish taxonomic, functional, and phylogenetic diversity in rivers under a gradient of watershed urbanization (Maozhouhe, Guanlanhe and Shenzhenhe rivers are in urbanized watersheds while Pingshanhe and Dapengwan rivers are in forested watersheds) in Shenzhen, a megacity with rapid urbanization in south China.

Mosaic of Somatic Mutations in Earth's Oldest Living Organism, Pando.

Understanding how mutations arise and spread through individuals and populations is fundamental to evolutionary biology. Most organisms have a life cycle with unicellular bottlenecks during reproduction. However, some organisms like plants, fungi, or colonial animals can grow indefinitely, changing the manner in which mutations spread throughout both the individual and the population.

Appraisal of a synthetic preservative, Quaternium - 15, effect on three model organisms: new insight on environmental risks.

After the COVID-19 pandemic, the use of quaternary ammonium compounds increased exponentially due to their efficacy as antimicrobials, stabilizers and disinfectants. Among these, Quaternium-15 is a preservative used in the formulation of a variety of personal care products. The increased use of this substance and the resulting persistence in wastewater treatment systems, which are unable to completely remove the Quaternium-15 from the water, is of increasing environmental concern.

Human Impacts on Great Lakes Walleye Sander vitreus Structure, Diversity and Local Adaptation.

Artificial propagation and wild release may influence the genetic integrity of wild populations. This practice has been prevalent in fisheries for centuries and is often termed 'stocking'. In the Laurentian Great Lakes (Great Lakes here-on), walleye populations faced declines from the 1950s to the 1970s, prompting extensive stocking efforts for restoration.

Experimental exposure of bivalves (Ruditapes decussatus) and meiobenthos (Metoncholaimus pristiurus) to 2,2'4,4'-tetrabromodiphenyl ether (PBDE-47) assessed by biochemical, computational modeling, and microbial tools.

PBDE-47, with lipophilic properties, was found in mussels, clams, and fish where it causes developmental issues, and endocrine and immune disruptions. The current study investigated the effects of PBDE-47 (0.1, 1, and 10 μg.