Results 221 to 230 of about 9,474 (259)

Stock Discrimination Using Otolith Shape Analysis

Canadian Journal of Fisheries and Aquatic Sciences, 1993
Otolith shape has long been known to be species specific, but recent reports have pointed to its value as an indicator of stock identity. To test this hypothesis, all three pairs of otoliths were sampled from 2349 Atlantic cod (Gadus morhua) collected on spawning grounds throughout the northwest Atlantic.
Steven E. Campana, John M. Casselman
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Comparisons of Herring Otoliths Using Fourier Series Shape Analysis

Canadian Journal of Fisheries and Aquatic Sciences, 1986
Numeric analysis of otolith morphology provides vital information to commercial fisheries concerning the age distribution, racial origin, and, to some extent, the environmental history of fish stocks. Conventional methods used to retrieve these data, though proven to be effective, are time consuming, susceptible to ambiguous interpretations, and only ...
Jerry L. Bird, Duane T. Eppler, David M. Checkley Jr.   +2 more
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Otolith shape index: is it a tool for trophic ecology studies?

Journal of the Marine Biological Association of the United Kingdom, 2019
AbstractThe aim of this study was to test the effective separation of shape indices of otoliths of three species belonging to the family Sciaenidae before and afterin vitrodigestion. We measured 328 sagittal otoliths and applied six shape indices. Before the experiment, the aspect ratio (otolith height/otolith length%), circularity, ellipticity and ...
Barbara Maichak de Carvalho, Henry Louis Spach, André Martins Vaz-Dos-Santos, Alejandra Vanina Volpedo   +3 more
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Otolith shape: a population marker for Atlantic herring Clupea harengus

Journal of Fish Biology, 2015
Otolith shape variation of seven Atlantic herring Clupea harengus populations from Canada, the Faroe Islands, Iceland, Ireland, Norway and Scotland, U.K., covering a large area of the species' distribution, was studied in order to see if otolith shape can be used to discriminate between populations.
L A, Libungan, G J, Óskarsson, A, Slotte, J A, Jacobsen, S, Pálsson   +4 more
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Ontogenetic trajectories of otolith shape during shift in habitat use: Interaction between otolith growth and environment

Journal of Experimental Marine Biology and Ecology, 2012
Otolith morphometrics has been shown to provide a practical basis for stock discrimination and ageing. This approach has been extensively used by fisheries scientists over the last decades. However, the determinants of otolith shape are not fully understood and shape apparently results from the synergistic action of various confounding factors. In this
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Otolith shape analysis and growth characteristics in larval and juvenile Squalidus argentatus

Environmental Biology of Fishes, 2021
Otolith microstructural features and morphological development of larval and juvenile fish are important for studying the early life history of fish. In this study, the analysis of otolith features was performed on Squalidus argentatus laboratory-reared larvae and juveniles (0 to 40 days post-hatching or dph) collected as eggs in the Laibin section of ...
Ming Hui Gao, Zhi Qiang Wu, Liang Liang Huang, Xi Chang Tan, Hao Liu, Saeed Rad   +5 more
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Allometric changes and shape differentiation of sagitta otoliths in sciaenid fishes

Fisheries Research, 2005
Abstract The sagitta otoliths are sound transducers that play an important role in the hearing of fishes. The shape of these structures is known to be affected by a number of genetic and environmental factors, such as depth, water temperature and substrate type.
Leandro R. Monteiro, Ana Paula M. Di Beneditto, Luis H. Guillermo, Luis A. Rivera   +3 more
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Otolith shape differences between Micropogonias manni and M. altipinnis (Sciaenidae)

2016
Sagitta morphology is much used in sciaenid systematics, as well as in archaeological, paleontological and ecological studies. Although morphometric characteristics of sagitta (length, height, thickness, weight,…) are useful to discriminate some marine and freshwater species, they are not fully conclusive in the case of Micropogonias altipinnis and M ...
Duque-Vélez, Lina-Maria, Béarez, Philippe, Cornette, Raphaël   +2 more
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Discrimination analysis of phenotypic stocks comparing fish otolith and scale shapes

Fisheries Research, 2017
Abstract The effectiveness of discrimination of phenotypic stocks was compared between otolith and scale shapes for Mugil curema specimens collected at five different locations in the Gulf of Mexico and two locations along the Pacific coast during two consecutive years.
Ana L. Ibáñez, Karla Hernández-Fraga, Sergio Alvarez-Hernández   +2 more
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Identifying Neogobius species from the southern Caspian Sea by otolith shape (Teleostei: Gobiidae)

Zootaxa, 2016
Three Neogobius species are common in the southern Caspian Sea. Identification of these species, especially from remains, is not fully understood. The present study compares the morphological characteristics of sagittal otoliths of N. caspius, N. pallasi and N. melanostomus.
Parisa, Davoodi, Hassan, Rahimian
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