Results 11 to 20 of about 8,417 (229)

Relationships among tissues, biofluids, and otolith selenium concentrations in wild female burbot (Lota lota)

open access: yesIntegrated Environmental Assessment and Management, EarlyView., 2023
Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves   +6 more
wiley   +1 more source

Influence of open and closed river systems on the migrations of two northern New Zealand populations of banded kokopu (Galaxias fasciatus) [PDF]

open access: yes, 2012
Otolith microchemical analysis by laser ablation inductively coupled mass spectrometry (ICP-MS) was used to investigate the migratory life histories of banded kokopu (Galaxias fasciatus) in two streams on the North Island of New Zealand.
Hicks, Brendan J., Tana, Raymond
core   +1 more source

An extraordinary gobioid fish fossil from southern france. [PDF]

open access: yes, 2013
The classification of gobioid fishes is still under discussion. Several lineages, including the Eleotridae and Butidae, remain difficult to characterize because synapomorphies are rare (Eleotridae) or have not yet been determined (Butidae). Moreover, the
Gaudant, Jean   +10 more
core   +1 more source

Precise age estimation from different ageing structures in the striped snakehead, Channa striata (Bloch,1793), collected from the river Ganga

open access: yesFrontiers in Marine Science, 2015
In Channa striata (N=156; TL=17-60cm) sampled from the river Ganga, the annuli laid on different ageing structures such as otoliths (whole and sectioned), scales, opercular bone and vertebrae were observed for age estimation.
Salman Khan, Mohammad Afzal Khan
doaj   +1 more source

Comparative Precision and Bias of Five Different Ageing Methods for the Large Tropical Snapper Lutjanus johnii

open access: yesAsian Fisheries Science, 2000
Five common methods of age determination were compared to determine their usefulness in monitoring the catch structure of a small Australian sportfishery for Lutjanus johnii.
R. MARRIOTT
doaj   +1 more source

First paleoproteome study of fossil fish otoliths and the pristine preservation of the biomineral crystal host

open access: yesScientific Reports, 2023
Otoliths are calcium carbonate components of the stato-acoustical organ responsible for hearing and maintenance of the body balance in teleost fish. During their formation, control over, e.g., morphology and carbonate polymorph is influenced by complex ...
Jarosław Stolarski   +8 more
doaj   +1 more source

Validating the growth increment periodicity in the otoliths of three small progenetic gobies

open access: yesScientia Marina, 2021
We determined the efficacy of marking the otoliths of three small-sized progenetic gobies to validate their increment periodicity. These small gobies have high mortalities and rearing difficulties, making direct validation difficult.
Sílvia Pérez-Mayol   +4 more
doaj   +1 more source

Morphology of sagitta, lapillus and asteriscus of Patagonian Genidens barbus

open access: yesMarine and Fishery Sciences, 2022
Otoliths are calcium carbonate structures, deposited as aragonite, located in the inner ear of bony fish. In recent years, they have become a useful tool for the determination of fish species, trophic content, age studies, and the identification of fish
María D. González Dubox   +3 more
doaj   +1 more source

Identification of Lessepsian fish species using the sagittal otolith

open access: yesScientia Marina, 2012
Lessepsian species are marine organisms that enter the Mediterranean through the Suez Canal, a phenomenon that has dramatically increased in recent decades.
Víctor Manuel Tuset   +2 more
doaj   +1 more source

Assessment of errors in cetacean diet analysis: in vitro digestion of otoliths [PDF]

open access: yes, 1999
Research into the feeding habits of cetaceans has traditionally relied on examining samples taken from the digestive tracts of commercially caught or stranded and by-caught animals. This depends on the identification and measurement of hard parts such as
Santos, M. B.   +2 more
core   +1 more source

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