Results 11 to 20 of about 298 (142)

Analysis of Limiting Factors Across the Life Cycle of Delta Smelt (Hypomesus transpacificus). [PDF]

open access: yesEnviron Manage, 2018
We developed a mechanistic life-cycle model derived from the elicitation of multiple factors influencing the success of individual life-stages of the imperiled delta smelt (Hypomesus transpacificus). We discuss the relevance of limiting factors in population ecology and problems with additive models in detecting them.
Hamilton SA, Murphy DD.
europepmc   +5 more sources

Chromosome-level draft genome assembly of Hypomesus nipponensis reveals transposable element expansion reshaping the genome structure [PDF]

open access: yesFrontiers in Genetics
Hypomesus nipponensis a commercially valuable fish within the Osmeriformes order, is naturally found in northeastern Asia and has been extensively introduced for commercial purposes across eastern Asia.
Chenzhao Zhu   +5 more
doaj   +2 more sources

Visual, spectral, and microchemical quantification of crystalline anomalies in otoliths of wild and cultured delta smelt [PDF]

open access: yesScientific Reports, 2022
Developmental abnormalities in otoliths can impact growth and survival in teleost fishes. Here, we quantified the frequency and severity of developmental anomalies in otoliths of delta smelt (Hypomesus transpacificus), a critically endangered estuarine ...
Levi S. Lewis   +15 more
doaj   +2 more sources

A Qualitative Comparison of Spawning Behavior Between Cultured and Wild Delta Smelt (Hypomesus transpacificus)

open access: yesSan Francisco Estuary and Watershed Science, 2023
For many imperiled species, comparisons between wild and cultured populations are invaluable for informing conservation measures, though opportunities to do so may be rare. In this study, we asked whether spawning between and among wild and cultured Delta Smelt varies in terms of behavior or resulting egg fertilization success.
Tsai, Yi-Jiun Jean   +4 more
exaly   +4 more sources

Factors Controlling Calanoid Copepod Biomass and Distribution in the Upper San Francisco Estuary and Implications for Managing the Imperiled Delta Smelt (Hypomesus transpacificus). [PDF]

open access: yesEnviron Manage, 2020
AbstractDelta smelt struggle to persist in a dramatically altered estuarine environment. Complex and incompletely understood relationships between food availability, environmental stressors, other components of the species’ habitat, and the abundance of delta smelt impede the effective management and recovery of the species.
Hamilton S   +3 more
europepmc   +4 more sources

Linking Hydrodynamic Complexity to Delta Smelt (Hypomesus transpacificus) Distribution in the San Francisco Estuary, USA [PDF]

open access: yesSan Francisco Estuary and Watershed Science, 2016
doi: http://dx.doi.org/10.15447/sfews.2016v14iss1art3Long-term fish sampling data from the San Francisco Estuary were combined with detailed three-dimensional hydrodynamic modeling to investigate the relationship between historical fish catch and hydrodynamic complexity.
Larry Brown   +2 more
exaly   +5 more sources

Space‐for‐time is not necessarily a substitution when monitoring the distribution of pelagic fishes in the San Francisco Bay‐Delta [PDF]

open access: yesEcology and Evolution, 2021
Occupancy models are often used to analyze long‐term monitoring data to better understand how and why species redistribute across dynamic landscapes while accounting for incomplete capture.
Adam Duarte, James T. Peterson
doaj   +2 more sources

Loss of plasticity in maturation timing after ten years of captive spawning in a delta smelt conservation hatchery [PDF]

open access: yesEvolutionary Applications, 2023
Adaptation to captivity in spawning programs can lead to unintentional consequences, such as domestication that results in reduced fitness in the wild.
Melanie E. F. LaCava   +5 more
doaj   +2 more sources

Diet, Prey Selection, and Body Condition of Age-0 Delta Smelt, Hypomesus transpacificus, in the Upper San Francisco Estuary [PDF]

open access: yesSan Francisco Estuary and Watershed Science, 2014
Steven B. Slater and Randall D. Baxterdoi: http://dx.doi.org/10.15447/sfews.2014v12iss3art1The Delta Smelt, an endangered fish, has suffered a long-term decline in abundance, believed to result from, in part, to changes in the pelagic food web of the upper San Francisco Estuary.
Slater, Steven B., Baxter, Randall D.
exaly   +5 more sources

Age and repeated collection interval effects on sperm motility in the endangered delta smelt Hypomesus transpacificus

open access: yesEndangered Species Research
Understanding the reproductive dynamics of endangered species is crucial for effective conservation strategies. This study examines the impact of age and repeated collection interval on sperm motility in the Critically Endangered delta smelt Hypomesus ...
MM Rahman, T Hung
doaj   +2 more sources

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