Results 71 to 80 of about 78,615 (270)

Molecular cytogenetic differentiation of paralogs of Hox paralogs in duplicated and re-diploidized genome of the North American paddlefish (Polyodon spathula). [PDF]

open access: yes, 2017
BackgroundAcipenseriformes is a basal lineage of ray-finned fishes and comprise 27 extant species of sturgeons and paddlefishes. They are characterized by several specific genomic features as broad ploidy variation, high chromosome numbers, presence of ...
Amemiya, Chris T   +7 more
core   +4 more sources

Saplings of significance: Nurturing cultural value of new tree plantings through participatory opportunities

open access: yesPeople and Nature, EarlyView.
Abstract Tree‐planting initiatives are a crucial part of international sustainability and climate action efforts. Yet, many of these initiatives fail to achieve their long‐term sustainability and climate goals. The role of community value is an often‐overlooked factor in promoting the success of new tree plantings.
Claire L. Narraway   +8 more
wiley   +1 more source

Management applications of genetic structure of anadromous sturgeon populations in the Lower Danube River (LDR), Romania [PDF]

open access: yesScientific Annals of the Danube Delta Institute, 2013
During the last decades, the over-exploitation of sturgeon stocks for caviar production simultaneously with severe habitat deteriorations has led to drastic declines in the natural populations of the Danube River. As a result of (i) decrease of sturgeon
ONĂRĂ Dalia Florentina   +2 more
doaj   +1 more source

Water Temperature Regimes and Thermal Drivers in Semi‐Natural and Flow‐Regulated Rivers of the Northern Great Plains

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Rivers of the northern Great Plains have lacked long‐term, continuous water temperature assessments, and there is limited information on thermal regimes of these systems and factors driving water temperature. We collected and assembled 2001–2022 water temperature data from 18 sites on four reaches of three rivers that differ in anthropogenic ...
Patrick J. Braaten   +5 more
wiley   +1 more source

Use of navigation channels by Lake Sturgeon: Does channelization increase vulnerability of fish to ship strikes? [PDF]

open access: yesPLoS ONE, 2017
Channelization for navigation and flood control has altered the hydrology and bathymetry of many large rivers with unknown consequences for fish species that undergo riverine migrations.
Darryl W Hondorp   +10 more
doaj   +1 more source

\u3ci\u3eHexagenia Bilineata\u3c/i\u3e (Ephemeroptera: Ephemeridae) Persists at Low Levels of Abundance in the Lower Fox River, Wisconsin [PDF]

open access: yes, 2018
After burrowing mayflies (Hexagenia bilineata) were first noted in the vicinity of the DePere Dam on the Fox River in 1991, adults have been observed in small numbers each summer since then.
Cochran, Phillip A, Kinziger, Andrew P
core   +2 more sources

Dam Submergence Flows: An Environmental Flow Prescription Designed to Aid Migratory Fish Passage

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT As part of a holistic ecosystem‐focused set of unified flow prescriptions, natural spring flood events were enhanced with releases from an upstream reservoir on the Cape Fear River in North Carolina (USA) to submerge a series of low‐use, low‐head lock‐and‐dam structures for anadromous fish to move upstream.
Aaron J. Bunch   +6 more
wiley   +1 more source

Efficiency of gillnets with 170mm mesh size in reduction of immature Persian sturgeon, Acipenser persicus, catch [PDF]

open access: yes, 2012
This study was carried out in Turkmen fishing station to examine suitable mesh size of gill nets for Persian sturgeon, Acipenser persicus, to decrease possibility of catching immature specimens and increase catch likelihood for larger fish.
Behrooz Khoshgalb, M.R.   +5 more
core  

The effects of endosulfan on P450 1A gene expression, antioxidant enzymes activity and histopathological alterations in liver of Persian sturgeon (Acipenser persicus Borodin, 1987) [PDF]

open access: yes, 2016
The effects of 14 days exposure to sublethal concentrations of endosulfan (10 and 40 μg L−1) were investigated in mRNA- P450 1A expression, antioxidant enzymes (SOD and CAT) activity and histopathological alterations of Persian sturgeon (Acipenser ...
Khalili, M.   +3 more
core   +1 more source

Reviewing the Potential for Behavioral Guidance to Improve Downstream Passage of Out‐Migrating Anguillid Eels

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Hydroelectric dams and their turbine infrastructure threaten out‐migrating anguillid eels en route to marine spawning grounds. For decades, invested parties have attempted to guide eels away from turbines and toward safe passage routes. A subset of this work (hereafter behavioral guidance) has involved exploiting sensory biology (e.g., sight ...
M. E. Cole MacLeod   +4 more
wiley   +1 more source

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