Results 71 to 80 of about 8,417 (229)

Assessment of two minimally invasive methodologies for sex identification in the European eel, Anguilla anguilla

Journal of Fish Biology, EarlyView.
Abstract Sex is an important driver of variation in behaviour, ecology and physiology. Sex identification in the Critically Endangered European eel (Anguilla anguilla) currently requires fish sacrifice, or the use of morphological differences such as body length, which can be inaccurate in certain habitats and at intermediate body lengths.
Michael J. Williamson, Jack A. Brand, Kevin Hopkins, Luke O'Connor, Matthew W. Perkins, Christopher Sergeant, Simon Spiro, Taina Strike, Jessica Whinfield, Rosie S. Williams, Ethan Wrigglesworth, Rosalind M. Wright, Adam T. Piper   +12 more
wiley   +1 more source

Otoliths of the extant gobioid species used in this study.

, 2022
Images depict left otoliths (sagittae) in medial view, except for Lesueurigobius sanzi, Aphia minuta, Asterropteryx semipunctata, Dormitator maculatus and Odontobutis obscurus, which represent right sagittae that were mirrored for better comparison ...
Martin Dohrmann (168188), Hamid R. Esmaeili (13021505), Radek Šanda (576250), Jasna Vukić (770220), Bettina Reichenbacher (583978), Christoph Gierl (583977), Philippe Keith (341295), William Humphreys (12911618)   +7 more
core   +1 more source

Beyond spring season: An autumn observation of adult lumpsuckers (Cyclopterus lumpus) in coastal Norway Frøya archipelago raises questions on extended spawning activity

Journal of Fish Biology, EarlyView.
Abstract During snorkelling near Frøya, central Norway, on 6 October 2025, a pair of adult lumpsuckers (Cyclopterus lumpus) was observed engaged in apparent prespawning behaviour in shallow kelp habitat. Such activity is surprising, as the species is mainly considered a spring spawner throughout the eastern Atlantic and is the focus of a targeted ...
Ole Henriksen, Mikael van Deurs, Rasmus Jacobsen, Thomas Warnar, Yvette Heimbrand   +4 more
wiley   +1 more source

Growth and otolith zone formation of Namibian hake, merluccius capensis

, 2012
Includes bibliographical references.Life history traits and tactics of commercially important Namibian shallow-water hake, Merluccius capensis, were investigated in relation to their environment.
Wilhelm, Margit Renate
core  

Reassembling broken otoliths for population discrimination

, 2013
No abstracts are to be cited without prior reference to the author. Twenty five Atlantic cod Gadus morhua otoliths were examined using eight shape measurements along with Fourier analysis of their outlines to test whether discrimination using otolith ...
Hlynur Bárðarson (4540519), Bruce McAdam (11906996), Gróa Pétursdóttir (4540522), Guðrún Marteinsdóttir (8031254)   +3 more
core   +1 more source

The state of knowledge on four families of Syngnathoidei fishes (Teleostei: Syngnathiformes): Aulostomidae, Centriscidae, Fistulariidae and Solenostomidae

Journal of Fish Biology, EarlyView.
Abstract Knowledge on the ecology and life‐history traits of coastal marine species is vital to inform their conservation and management, especially as their coastal habitats come under increasing threats. However, such data have never been collated for four of the five families in the suborder Syngnathoidei—the close relatives of the better‐studied ...
Syd J. Ascione, Elsa Camins, Miguel Correia, Amanda C. J. Vincent   +3 more
wiley   +1 more source

Intra‐annual energy density cycles of spring‐ and fall‐spawning Atlantic herring Clupea harengus reveal different reproductive allocation tactics

Journal of Fish Biology, EarlyView.
Abstract Atlantic herring Clupea harengus are total spawners that exhibit a large degree of reproductive plasticity and have substantial intra‐annual variation in their energetic condition. Recent research suggests that the species may be declining in energetic condition in the northwest Atlantic Ocean from the few historical records, but comparisons ...
Joseph B. Warren, Mark J. Wuenschel, Kenneth Oliveira   +2 more
wiley   +1 more source

Evidence of a marine larval stage in coastrange sculpin Cottus aleuticus from a small coastal stream in California, USA, based on otolith strontium isotopes

Journal of Fish Biology, EarlyView.
Abstract Cottus aleuticus (coastrange sculpin) is one of two North American facultatively amphidromous sculpins, but habitat use during its planktonic larval stage is poorly documented. We analysed strontium isotopes (88Sr and 87Sr/86Sr) in otoliths of 10 adult C. aleuticus from a small coastal California stream.
David E. Rundio, Rachel C. Johnson, Christopher J. Donohoe   +2 more
wiley   +1 more source

Otoliths of the Gobiidae from the Neogene of tropical America

Swiss Journal of Palaeontology
Otoliths are common and diverse in the Neogene of tropical America. Following previous studies of Neogene tropical American otoliths of the lanternfishes (Myctophidae), marine catfishes (Ariidae), croakers (Sciaenidae), and cusk-eels (Ophidiiformes), we ...
Werner W. Schwarzhans, Orangel A. Aguilera   +1 more
doaj   +1 more source

Preparation of Small Otoliths for Microscopic Examination

, 1987
We present a method for the preparation of small otoliths that consists of mounting otoliths in thin‐section epoxy on an acetate sheet. After mounting, the otoliths can be handled easily during grinding, polishing, and microscopic observation.
Taylor, R. Scott, Schultz, David L.
core   +1 more source