Results 41 to 50 of about 784 (171)

Intraspecific genetic admixture and the morphological diversification of an estuarine fish population complex. [PDF]

PLoS ONE, 2015
The North-east American Rainbow smelt (Osmerus mordax) is composed of two glacial races first identified through the spatial distribution of two distinct mtDNA lineages. Contemporary breeding populations of smelt in the St.
Julian J Dodson, Audrey Bourret, Marie France Barrette, Julie Turgeon, Gaétan Daigle, Michel Legault, Frédéric Lecomte   +6 more
doaj   +1 more source

Overlooked components of lipid metabolism: Odd‐chain polyunsaturated fatty acids in photosynthetic microorganisms

Journal of Phycology, EarlyView.
Abstract This mini‐review examines odd‐carbon polyunsaturated fatty acids (odd‐PUFAs), a rare but biologically significant group of fatty acids in photosynthetic microorganisms. Odd‐PUFAs are straight‐chain fatty acids containing an odd number of carbon atoms and two or more methylene‐interrupted double bonds. They typically account for less than 1% of
Linda Nedbalová, Milada Vítová, Tomáš Řezanka   +2 more
wiley   +1 more source

Comparing Fish Density and Echo Strength Distribution Recorded by Two Generations of Single Beam Echo Sounders

Applied Sciences, 2019
Hydroacoustic acquisition was performed by means of two different single beam systems, the Simradmodel EK15 from 2015 and the Simrad model EY-M from the 1980s to explore potential differences of fish density and target strength (TS) distribution between ...
Arne N. Linløkken, Frode Næstad, Kjell Langdal, Kjartan Østbye   +3 more
doaj   +1 more source

Salinity, turbidity, and chlorophyll drive zooplankton succession in a temperate estuary under anthropogenic pressure

Limnology and Oceanography, Volume 71, Issue 8, August 2026.
Abstract Estuarine zooplankton are vital primary consumers and essential for estuarine ecosystem functioning and productivity, but they face strong physico‐biochemical gradients and often anthropogenically altered habitats that impact their succession.
Johanna Biederbick, Christian Möllmann, Vanessa Russnak, Rolf Koppelmann   +3 more
wiley   +1 more source

Comparisons among three diet analyses demonstrate multiple patterns in the estimated adult diet of a freshwater piscivore, Salvelinus namaycush

Ecological Indicators, 2021
Understanding trophic interactions is critical for successful resource management. However, studying diet patterns (e.g., spatial and seasonal changes) can require extensive effort.
Matthew H. Futia, Scott F. Colborne, Aaron T. Fisk, Dimitry Gorsky, Timothy B. Johnson, Brian F. Lantry, Jana R. Lantry, Jacques Rinchard   +7 more
doaj   +1 more source

Fatty acid‐based diet estimation method and long‐term monitoring data reveal generalist and selective feeding behaviors in herbivorous cladocerans and copepods

Limnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Zooplankton play an essential role in lake ecosystems by linking primary producers to higher trophic levels. While herbivorous cladocerans are well studied, the diets and population dynamics of herbivorous copepods remain less understood. We created fatty acid reference profiles for the calanoid copepod Eudiaptomus gracilis through controlled ...
Jaakko J. Litmanen, Kirsi Kuoppamäki, Sami J. Taipale   +2 more
wiley   +1 more source

Lipid correction of hydrogen stable isotope ratios in fish

Limnology and Oceanography: Methods, Volume 24, Issue 7, July 2026.
Abstract Lipids are known to affect stable isotope ratio of organisms, especially δ13C values, and simple arithmetic lipid‐correction procedures have been developed based on the carbon to nitrogen ratio (C : N) that is a proxy for lipid content. Equivalent issues will likely arise with the increasing use of hydrogen isotopes in ecology, but as yet no ...
Kang Wang, Mikko Kiljunen, Jos Schilder, Heikki Hämäläinen, Kimmo K. Kahilainen, Roger I. Jones   +5 more
wiley   +1 more source

Smelt was the likely beneficiary of an antifreeze gene laterally transferred between fishes

BMC Evolutionary Biology, 2012
Background Type II antifreeze protein (AFP) from the rainbow smelt, Osmerus mordax, is a calcium-dependent C-type lectin homolog, similar to the AFPs from herring and sea raven.
Graham Laurie A, Li Jieying, Davidson William S, Davies Peter L   +3 more
doaj   +1 more source

The Forgotten Pink Salmon in the Laurentian Great Lakes: An Unexpected Invasion With Insights for Three Oceans

Fish and Fisheries, Volume 27, Issue 4, Page 813-830, July 2026.
ABSTRACT Introductions of species outside their native range, such as pink salmon (Oncorhynchus gorbuscha) in the Laurentian Great Lakes, can serve as unplanned experiments that provide new insights into ecological adaptation. We synthesize available information on the understudied Great Lakes pink salmon invasion and highlight how this case can inform
Joseph A. Langan, Peter J. Alsip, Hazem U. Abdelhady, Charles R. Bronte, Cory A. Goldsworthy, Matthew S. Kornis, Krista B. Oke, Eva B. Thorstad, Benjamin A. Turschak   +8 more
wiley   +1 more source

Distributions of Cisco (Coregonus artedi) in the upper Great Lakes in the mid-twentieth century, when populations were in decline.

PLoS ONE, 2022
The restoration of the once abundant Cisco (Coregonus artedi) is a management interest across the Laurentian Great Lakes. To inform the restoration, we (1) described historical distributions of Cisco and (2) explored whether non-indigenous Rainbow Smelt (
Yu-Chun Kao, Renee E Renauer-Bova, David B Bunnell, Owen T Gorman, Randy L Eshenroder   +4 more
doaj   +1 more source