Results 51 to 60 of about 9,474 (259)

Provenancing fish in freshwaters of the Alpine Foreland using Sr/Ca and 87Sr/86Sr ratios in otoliths and otolith shape parameters

open access: yesFrontiers in Marine Science, 2015
Analysis of elemental and isotopic compositions and of the shape of fish otoliths has become an important tool in fish ecology. Highly relevant questions like origin and migration of fish over their life time cannot be answered easily with other methods.
Johannes Oehm, Johanna Irrgeher
doaj   +1 more source

Inner ear morphology in the Atlantic molly Poecilia mexicana [PDF]

open access: yes, 2011
Fishes show an amazing diversity in hearing abilities, inner ear structures, and otolith morphology. Inner ear morphology, however, has not yet been investigated in detail in any member of the diverse order Cyprinodontiformes.
Hess, Martin   +2 more
core   +1 more source

Otolith shape variations between artificially stocked and autochthonous pikeperch (Sander lucioperca) [PDF]

open access: yesFisheries Research, 2020
Abstract Fish stocking is one of the most widespread and frequent management strategies in freshwater systems. However, the contribution of stocked fish to the population is seldom investigated, and hence the effectiveness of this strategy is virtually unknown for many populations. Understanding the contribution of stocked fish into the population is
Souza, Allan T.   +8 more
openaire   +2 more sources

Reconstructing individual shape histories of fish otoliths: A new image-based tool for otolith growth analysis and modeling [PDF]

open access: yesFisheries Research, 2009
In this paper is presented a novel image processing tool for the extraction of geometric information in otolith images. It relies on the reconstruction of individual otolith shape histories from otolith images. Based on the proposed non-parametric level-set representation of otolith shape history, applications to the extraction of growth axes and ring ...
Fablet, Ronan   +4 more
openaire   +3 more sources

The use of otolith shape to identify stocks of Konosirus punctatus [PDF]

open access: yesIsraeli Journal of Aquaculture - Bamidgeh, 2020
Konosirus punctatus is an important economic fish in the Northwest Pacific Ocean, especially along the coast of China, and an important substitute in the marine ecosystem. The aim of this study is to quantify the variation of sagittal shapes to discriminate the K.
Li, Songzhang   +7 more
openaire   +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

Systematic biases in human heading estimation. [PDF]

open access: yes, 2013
Heading estimation is vital to everyday navigation and locomotion. Despite extensive behavioral and physiological research on both visual and vestibular heading estimation over more than two decades, the accuracy of heading estimation has not yet been ...
Cuturi, Luigi F., MacNeilage, Paul R.
core   +2 more sources

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

The use of otolith morphology to indicate the stock structure of common coral trout (Plectropomus leopardus) on the Great Barrier Reef, Australia [PDF]

open access: yes, 2006
We investigated the use of otolith morphology to indicate the stock structure of an exploited serranid coral reef fish, Plectropomus leopardus, on the Great Barrier Reef (GBR), Australia.
Begg, Gavin A.   +2 more
core  

Bioimaging of sense organs and the central nervous system in extant fishes and reptiles in situ: A review

open access: yesThe Anatomical Record, EarlyView.
Bioimaging of the sense organs and brain of fishes and reptiles. Left panel: 3D reconstruction of the head and brain of the deep‐sea viperfish Chauliodus sloani following diceCT. Right panel: A 3D reconstruction of a 70‐day‐old embryo head of the bearded dragon Pogona vitticeps following diceCT, showing the position of the segmented brain within the ...
Shaun P. Collin   +9 more
wiley   +1 more source

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