Results 31 to 40 of about 1,712 (153)

Environmental effects on otolith morphology variability of European eel, Anguilla anguilla (Linnaeus, 1758), for subpopulation discrimination in Corsica

open access: yesFrontiers in Marine Science
Otolith shape analysis is an efficient tool for fish stock identification. However, due to insufficient research, it remains still poorly understood concerning the European eel (Anguilla anguilla), a highly migratory catadromous and panmictic species ...
Rémi Millot   +7 more
doaj   +1 more source

Variations in Otolith and Scale Shape of the Invasive Round Goby Neogobius melanostomus Populations from Different Habitats of the Sava River Basin, Croatia

open access: yesCroatian Journal of Fisheries, 2023
Round goby Neogobius melanostomus is one of the three invasive Ponto-Caspian gobies found in the Sava River basin in Croatia. It has a negative effect on the native ecosystems due to its high invasive potential that enables its rapid spread upstream in ...
Planchet Valentine   +2 more
doaj   +1 more source

Discrimination of Schizothorax grahami (Regan, 1904) Stocks Based on Otolith Morphology

open access: yesFishes, 2023
Otoliths grow throughout a fish’s life and are important for identifying fish stocks and fish age. This study aims to differentiate different stocks of Schizothorax grahami (Regan, 1904) in the Chishui River, an upper reach of the Yangtze River, by ...
Yang Zhou   +7 more
doaj   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson   +2 more
wiley   +1 more source

Reduced size of larvae and small fish linked to warming and reduced prey density

open access: yesEcography, EarlyView.
Body size is an integrative trait that has declined across many ecological assemblages in the last decades. Changes in body size of early life stages and small‐bodied fish are driven by complex interactions between size‐dependent mortality, and temperature‐ and food‐dependent growth, and can have consequences for recruitment to the adult stock and food
Max Lindmark   +6 more
wiley   +1 more source

Molecular Biomarkers in Meniere's Disease: A Scoping Review of Current Evidence

open access: yesOtolaryngology–Head and Neck Surgery, EarlyView.
Abstract Objective Meniere's disease is a complex chronic inner ear condition that is characterized by vertigo, tinnitus, aural fullness, and progressive hearing loss. Currently, diagnostic strategies remain symptom‐driven, and treatments focus on management of discrete episodes rather than targeting underlying pathophysiology.
Hamza Kamran   +3 more
wiley   +1 more source

On the intraspecific variation in morphometry and shape of sagittal otoliths of common sardine, Strangomera bentincki, off central-southern Chile

open access: yesScientia Marina, 2012
Size and shape of fish otoliths are species-specific, but some species also display intraspecific variations. The common sardine, Strangomera bentincki, is a small pelagic fish inhabiting a seasonal upwelling ecosystem off central-southern Chile, having ...
Sandra Curin-Osorio   +2 more
doaj   +1 more source

Influence of Vitamin B12 Deficiency on Auditory and Vestibular Functioning: An Objective Test‐Based Systematic Review

open access: yesOtolaryngology–Head and Neck Surgery, EarlyView.
Abstract Objective To evaluate the effectiveness of objective audiological and vestibular assessments in detecting functional changes associated with vitamin B12 deficiency. Data Sources A comprehensive literature search was conducted in PubMed, Scopus, Web of Science, and EMBASE databases.
Nesmah Zainab   +2 more
wiley   +1 more source

Fully-automated identification of fish species based on otolith contour: using short-time Fourier transform and discriminant analysis (STFT-DA) [PDF]

open access: yesPeerJ, 2016
Background. Fish species may be identified based on their unique otolith shape or contour. Several pattern recognition methods have been proposed to classify fish species through morphological features of the otolith contours.
Nima Salimi   +3 more
doaj   +2 more sources

Age determination in the icefish Pseudochaenichthys georgianus (Channichthyidae) based on multiple methods using otoliths

open access: yesAquatic Biology, 2021
Aging Antarctic icefish is difficult because of their lack of scales and poorly calcified bones. Icefish ages must therefore be estimated from otoliths.
R Traczyk, VB Meyer-Rochow, RM Hughes
doaj   +1 more source

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