Results 51 to 60 of about 8,417 (229)

Peeling the Otolith of Fish: Optimal Parameterization for Micro-CT Scanning

Frontiers in Marine Science, 2019
In this paper, we aim to provide optimal parameters for micro-computed tomography scans of fish otoliths. We tested fifteen different combinations to sagittae. The images were scaled to Hounsfield units, and segmented in two distinct volumes-of-interest (
Jonas E. Vasconcelos-Filho, Jonas E. Vasconcelos-Filho, Felix S. L. Thomsen, Borko Stosic, Borko Stosic, Antonio C. D. Antonino, Daniel A. Duarte, Richard J. Heck, Rosangela P. T. Lessa, Francisco M. Santana, Beatrice P. Ferreira, Paulo J. Duarte-Neto, Paulo J. Duarte-Neto   +12 more
doaj   +1 more source

Morphological and chemical analysis of archaeological fish otoliths from the Lower Murray River, South Australia

, 2012
We analysed otoliths from excavations along the Lower Murray River (n=24), dating from the mid- to late-Holocene period. We identified the species, and estimated the size and age of fish.
Gillanders, Bronwyn M, Gillanders, B., Disspain, M., Wilson, C., Wilson, Christopher J, Disspain, Morgan CF   +5 more
core   +1 more source

Disentangling the Drivers of a Piscivorous Intra‐Annual Cohort and the Contributions of Three Cohorts to Early‐Year Class Strength in Pikeperch (Sander lucioperca)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Using pikeperch (Sander lucioperca) as a model species, we investigated the factors influencing fluctuations in the abundance of piscivorous intra‐annual cohorts and assessed the role of three distinct cohorts: extremely small (ES), ordinary (or mid‐sized) fingerlings, and piscivorous in shaping year‐class strength.
Million Tesfaye, Tomáš Jůza, Marek Šmejkal, Katerina Soukalová, Daniel Bartoň, Petr Blabolil, Martin Čech, Josef Hejzlar, Marie Prchalová, Milan Muška, Michal Tušer, Luboš Kočvara, Zuzana Sajdlová, Vladislav Draštík, Carlos Martinez, Karlos Ribeiro de Moraes, Milan Říha, Mojmír Vašek, Radka Symonová, Marek Brabec, Jan Kubečka, Allan T. Souza   +21 more
wiley   +1 more source

A Case Study of Coilia nasus: Is There a Difference in Microchemical Signatures Between Left and Right Fish Sagittae?

Fishes
Owing to the asynchronous deposition of trace elements between paired left and right otoliths within individual fish, researchers must consciously and uniformly use only single otoliths (especially the left one) for microchemical studies.
Chengchao Du, Tao Jiang, Jian Yang
doaj   +1 more source

Reconstructing reef fish communities using fish otoliths in coral reef sediments.

PLoS ONE, 2019
Little is known about long-term changes in coral reef fish communities. Here we present a new technique that leverages fish otoliths in reef sediments to reconstruct coral reef fish communities. We found over 5,400 otoliths in 169 modern and mid-Holocene
Chien-Hsiang Lin, Brigida De Gracia, Michele E R Pierotti, Allen H Andrews, Katie Griswold, Aaron O'Dea   +5 more
doaj   +1 more source

Length‐Based Spawning Potential Ratio Assessment of Key Species From a Remote Recreational Fishery at Diego Garcia, Indian Ocean

Fisheries Management and Ecology, EarlyView.
ABSTRACT Recreational fisheries in remote regions often operate under limited regulation and data availability, presenting challenges for sustainable management. Diego Garcia, located within the Chagos Marine Protected Area, hosts a unique recreational reef fishery embedded within a highly protected environment. We assessed the stock status of five key
Andrea N. Odell, David J. Curnick, Ronan C. Roche, Claire Collins, Kathryn E. Dawson, Ka'ohinani Kawahigashi, Chloe Le Blond, Andrew McInnis, Anna Patel, Sivajyodee Sannassy Pilly, Isobel Strudwick, Ami Vice, Brett M. Taylor   +12 more
wiley   +1 more source

OTOLITH MORPHOLOGY OF SOME FRESHWATER FISHES OF IRAN

‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2008
Otoliths or ear stones are small white bodies present in the ear of bony fishes. Otoliths are important in keeping fish position and steadiness and also are useful structures in hearing.
H. Esmaeili; A. Teimori; Z. Pirvar
doaj  

First evidence of otolith abnormalities in Belone belone from the Sea of Marmara: An integrative approach to morphological deformities with light and scanning electron microscopy

Oceanological and Hydrobiological Studies
This study is the first of its kind, providing detailed evidence of otolith abnormalities in Belone belone in the Darıca coast of the Sea of Marmara (Türkiye), using an integrative approach that combines light microscopy and scanning electron microscopy (
Bostancı Derya, Yedier Serdar
doaj   +1 more source

The Staircase Chart: Visualising Vertical and Cross‐Shelf Movements and Dispersal of Early‐Life Fish, Applied to Japanese Jack Mackerel

Fisheries Oceanography, EarlyView.
ABSTRACT Dispersal during early life stages is a critical process shaping marine fish connectivity and population dynamics, yet direct field observations at the individual level remain elusive. This has limited our understanding of the factors controlling dispersal, including the impact of active swimming by larvae and juveniles. Here, we present a new
Tatsuya Sakamoto, Daichi Muto, Motomitsu Takahashi, Chiyuki Sassa, Toyoho Ishimura   +4 more
wiley   +1 more source

Age and growth of larval Sardinella aurita (Pisces: Clupeidae) from northeastern Venezuela, determined by otolith microstructure analysis

Ciencias Marinas, 2006
Age and growth of Sardinella aurita larvae were analyzed based on daily growth increments in sagitta otoliths. Larvae were obtained from ichthyoplankton samples collected from the outer shelf off Margarita Island and from Mochima Bay (northeastern ...
TC Ramírez-M, BJ Marín-E
doaj   +1 more source