Results 81 to 90 of about 1,683 (196)

Inter-population differences in otolith morphology are genetically encoded in the killifish Aphanius fasciatus (Cyprinodontiformes)

Scientia Marina, 2013
Inter-population differences in otolith shape, morphology and chemistry have been used effectively as indicators for stock assessment or for recognizing environmental adaptation in fishes.
Ali Annabi, Khaled Said, Bettina Reichenbacher   +2 more
doaj   +1 more source

Temperature, but not acidification, influences the growth and lipid profile of juvenile sand whiting, Sillago ciliata (Cuvier 1829)

Journal of Fish Biology, EarlyView.
Abstract Seafood provides an essential source of macro‐ and micronutrients for coastal communities worldwide. Climate change is a key threat to seafood security, altering the sizes, abundances, distributions, physiology and ecological interactions of fisheries species, and increasingly, there is evidence of impacts to seafood nutritional quality.
Tanika C. Shalders, Melissa Tan, Karina C. Hall, Melinda A. Coleman, Brendan Kelaher, Curtis Champion, Kirsten Benkendorff   +6 more
wiley   +1 more source

Otolith atlas for the western Mediterranean, north and central eastern Atlantic

Scientia Marina, 2008
The sagittal otolith of 348 species, belonging to 99 families and 22 orders of marine Teleostean fishes from the north and central eastern Atlantic and western Mediterranean were described using morphological and morphometric characters.
Victor M. Tuset, Antoni Lombarte, Carlos A. Assis   +2 more
doaj   +1 more source

Otolith‐based age determination in Anguilla anguilla (Linnaeus 1758) from Lake Vistonida, NE Greece: A modified Crack and Burn protocol

Journal of Fish Biology, EarlyView.
Abstract This study presents a modified otolith preparation protocol to estimate the age of Anguilla from Lake Vistonida (NE Greece). In experimental attempts, 300 otoliths were processed using standard and modified eel ageing methods, producing low success rates (0%–20%) due to poor annuli visibility and structural damage.
Paraskevi Papadopoulou, Argyriοs Sapounidis, Manos Koutrakis, Ioannis D. Leonardos   +3 more
wiley   +1 more source

Using sagittal otolith morphometrics and shape to discriminate three Nemipterus species (Teleostei: Nemipteridae) from Hurghada, Red Sea, Egypt

Scientific Reports
Otolith morphology and morphometrics have been widely used to investigate taxonomic distinctions and infer potential relationships among fish species. This study focuses on the sagittal otolith shape and morphological traits of three Nemipterus species ...
Imam A. A. Mekkawy, Samia M. El-Mahdy, Usama M. Mahmoud, Ola I. Muhammad   +3 more
doaj   +1 more source

Morphological analyses of otoliths indicate a single population of invasive Arapaima gigas in tributaries of the Upper Madeira River (Amazon Basin)

Boletim do Instituto de Pesca
The present study aimed to evaluate the potential of the shape of the sagitta otolith to discriminate populations of Arapaima gigas outside their natural area of occurrence in different tributaries of the Madeira River. Otolith samples were collected at
Marcos de Almeida Mereles, Raniere Garcez Costa Sousa, Carlos Edwar de Carvalho Freitas   +2 more
doaj   +1 more source

Taxonomic inflation in fish systematics: A critical review with illustrative evidence assessment and integrative case study of the Salmo trutta Complex

Journal of Fish Biology, EarlyView.
Abstract Fish species are being described at an accelerating rate, but a substantial fraction of recent descriptions rests on evidentiary standards too weak to distinguish genuine species‐level discontinuities from intraspecific variation, local adaptation and the artefacts of single‐marker analyses, a pattern of taxonomic inflation with documented ...
Ilhan Altinok
wiley   +1 more source

Explaining decisions of deep neural networks used for fish age prediction.

PLoS ONE, 2020
Age-reading of fish otoliths (ear stones) is important for the sustainable management of fish resources. However, the procedure is challenging and requires experienced readers to carefully examine annual growth zones.
Alba Ordoñez, Line Eikvil, Arnt-Børre Salberg, Alf Harbitz, Sean Meling Murray, Michael C Kampffmeyer   +5 more
doaj   +1 more source

Marine migration influences mercury accumulation in anadromous Arctic char (Salvelinus alpinus)

Journal of Fish Biology, EarlyView.
Abstract Mercury (Hg) is a globally distributed toxic metal present in northern natural environments that biomagnifies in food webs and bioaccumulates in apex predator fish, such as Arctic char (Salvelinus alpinus)—an iteroparous species with a circumpolar distribution. Arctic char exhibit a variety of life history types, with the migrating, anadromous
Isabel R. Hilgendag, Michael Power, Mehdi M. Aqdam, Christopher W. Lewis, Zoya Martin, Ashley D. Ehrman, Heidi K. Swanson   +6 more
wiley   +1 more source

Water temperature and river discharge drive age‐dependent changes in brown trout (Salmo trutta) growth

Journal of Fish Biology, EarlyView.
Abstract Rivers and streams exhibit inherent variability in environmental conditions, particularly in water temperature and stream discharge. These factors can impact fish growth through both direct (i.e., physiological) and indirect (i.e., ecosystem productivity) mechanisms.
Patricia Y. Koh, Jarod P. Lyon, Matt West, John R. Morrongiello   +3 more
wiley   +1 more source