Results 71 to 80 of about 853,371 (225)

The dental plate on bichir pectoral fins: A unique dermal skeletal element bearing individual odontodes with tooth‐like replacement

open access: yesJournal of Anatomy, EarlyView.
Pectoral fins of bichirs encompass the so‐called dental plates – unique dermal skeletal elements with individual odontodes identical to the oral teeth. Abstract The dermal skeleton appeared early in vertebrate evolution in the form of mineralized skin denticles composed of tooth‐like units—odontodes.
Tomáš Suchánek   +2 more
wiley   +1 more source

Diet composition and food overlap of Acestrorhynchus britskii and A. lacustris (Characiformes: Acestrorhynchidae) from Sobradinho reservoir, São Francisco river, Bahia State = Composição da dieta e sobreposição alimentar de Acestrorhynchus britskii e A. lacustris (Characiformes: Acestrorhynchidae) do reservatório de Sobradinho, rio São Francisco, Estado da Bahia

open access: yesActa Scientiarum: Biological Sciences, 2011
Fish diet studies contribute to understanding resource partitioning and community trophic structure. The present paper characterizes the diet of gpeixe-cachorroh species Acestrorhynchus britskii and A.
Aline Alves Ferreira da Rocha   +4 more
doaj  

Genomic insights on conservation priorities for North Sea houting and European lake whitefish (Coregonus spp.)

open access: yesMolecular Ecology, EarlyView.
Abstract Population genomics analysis holds great potential for informing conservation of endangered populations. We focused on a controversial case of European whitefish (Coregonus spp.) populations. The endangered North Sea houting is the only coregonid fish that tolerates oceanic salinities and was previously considered a species (C.
Aja Noersgaard Buur Tengstedt   +7 more
wiley   +1 more source

Marine water environmental DNA metabarcoding provides a comprehensive fish diversity assessment and reveals spatial patterns in a large oceanic area

open access: yesEcology and Evolution, 2020
Current methods for monitoring marine fish (including bony fishes and elasmobranchs) diversity mostly rely on trawling surveys, which are invasive, costly, and time‐consuming.
Natalia Fraija‐Fernández   +7 more
doaj   +1 more source

Environmental DNA highlights fish biodiversity in mesophotic ecosystems

open access: yesEnvironmental DNA, 2023
Mesophotic marine ecosystems are characterized by lower light penetration supporting specialized fish fauna. Due to their depths (−30–−150 m), accessibility is challenging, and the structure of mesophotic fish assemblages is generally less known than ...
Marion Muff   +18 more
doaj   +1 more source

Twenty-three new records of commercial fish species (Actinopterygii) from the Socotra Archipelago (north-western Indian Ocean)

open access: yesActa Ichthyologica et Piscatoria, 2020
The Socotra Archipelago is recognized globally as a UNESCO World Heritage Site The unique ichthyofauna of Socotra accumulates fish species from different ecoregions, including commercial species which represent an important part of the local fishery ...
S. Bogorodsky, F. N. Saeed, U. Zajonz
semanticscholar   +1 more source

Measuring juvenile habitat quality for fishes and invertebrates

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2346-2395, December 2025.
ABSTRACT Identifying the role of marine and estuarine habitats in supporting fish and invertebrate populations during vulnerable juvenile life stages is essential to achieve effective conservation and fisheries management. There remains general agreement that: (i) the quality of juvenile habitat is best measured as the contribution of juveniles to ...
Benjamin J. Ciotti   +12 more
wiley   +1 more source

Spatiotemporal Patterns of Gene Expression Associated With Mating Stimuli in the Brain of Female Guppies

open access: yesGenes, Brain and Behavior, Volume 24, Issue 6, December 2025.
We combine traditional methods with an original network analysis to investigate the spatiotemporal expression patterns of candidate genes across the female guppy brain. We found consistent differences in the expression of these genes triggered by mating stimuli, and used mathematical models to further understand how mating behavior is coordinated in ...
Amaury Bittar   +7 more
wiley   +1 more source

Chromosome evolution in fishes: a new challenging proposal from Neotropical species

open access: yesNeotropical Ichthyology
We present a database containing cytogenetic data of Neotropical actinopterygian fishes from Venezuela obtained in a single laboratory for the first time. The results of this study include 103 species belonging to 74 genera assigned to 45 families and 17
Mauro Nirchio   +3 more
doaj   +1 more source

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