Results 41 to 50 of about 9,474 (259)

Pitfalls in stock discrimination by shape analysis of otolith contours [PDF]

open access: yesICES Journal of Marine Science, 2015
Abstract This paper focuses on artefacts that may corrupt stock discrimination by shape analysis of otolith contours, how one can examine if such artefacts are important, and how they can be avoided. The scope focuses on Fourier transforms of contour points, the linear Fisher discrimination technique, and success rates based on cross ...
Alf Harbitz, Ole Thomas Albert
openaire   +1 more source

The German Bight (North Sea) is a nursery area for both locally and externally produced sprat juveniles [PDF]

open access: yes, 2009
To better understand the role of the German Bight (GB) as a nursery area for juvenile North Sea sprat Sprattus sprattus we sought to determine whether the area may receive only locally or also externally produced offspring.
Baumann, H.   +3 more
core   +1 more source

Patterns, causes, and consequences of marine larval dispersal [PDF]

open access: yes, 2015
Quantifying the probability of larval exchange among marine populations is key to predicting local population dynamics and optimizing networks of marine protected areas. The pattern of connectivity among populations can be described by the measurement of
Bogdanowicz, Steven M.   +5 more
core   +1 more source

Comparative Otolith Morphology of Two Morphs of Schizopygopsis thermalis Herzenstein 1891 (Pisces, Cyprinidae) in a Headwater Lake on the Qinghai-Tibet Plateau

open access: yesFishes, 2022
Teleost otoliths provide a pivotal medium for studying changes in population structure and population dynamics of fish. Understanding the otolith-fish size relationship and intraspecies variation in otolith morphology is essential for the accurate ...
Jialing Qiao   +5 more
doaj   +1 more source

Identification of gerreid species (Actinopterygii: Perciformes: Gerreidae) from the Pacific coast of Mexico based on sagittal otolith morphology analysis [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2012
Background. Although the species of the family Gerreidae have been subjected to many studies, their taxonomy at specific- and sometimes generic levels is still confusing. To contribute to the clarification of the taxonomy of the Mexican Pacific mojarras,
J. De La Cruz-Agüero   +3 more
doaj   +3 more sources

Classification of time series by shapelet transformation [PDF]

open access: yes, 2014
Time-series classification (TSC) problems present a specific challenge for classification algorithms: how to measure similarity between series. A \emph{shapelet} is a time-series subsequence that allows for TSC based on local, phase-independent ...
Anthony Bagnall   +23 more
core   +1 more source

Stock discrimination of the bogue, Boops boops (Actinopterygii: Perciformes: Sparidae), from two Tunisian marine stations using the otolith shape [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2020
Background. The bogue, Boops boops (Linnaeus, 1758), is the most common sparid fish in the Tunisian waters. Despite its economic importance, the stock discrimination of this species is poorly understood up to date.
M. Ben Labidi   +5 more
doaj   +3 more sources

Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish

open access: yesNeotropical Ichthyology, 2018
Using morphometric measurements and wavelets functions, the asterisci otoliths of curimatã, Prochilodus nigricans were analysed to identify the variation in shape and growth increment of individuals from Solimões, Japurá and Negro rivers of the Amazon ...
Rosa Maria Rodrigues da Costa   +3 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

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