Visual, spectral, and microchemical quantification of crystalline anomalies in otoliths of wild and cultured delta smelt. [PDF]
Sci Rep, 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 ...
Lewis LS +15 more
europepmc +2 more sources
SmeltCam: underwater video codend for trawled nets with an application to the distribution of the imperiled delta smelt. [PDF]
PLoS One, 2013 Studying rare and sensitive species is a challenge in conservation biology. The problem is exemplified by the case of the imperiled delta smelt Hypomesus transpacificus, a small delicate fish species endemic to the San Francisco Estuary, California ...
Feyrer F +9 more
europepmc +2 more sources
Salinity Changes the Dynamics of Pyrethroid Toxicity in Terms of Behavioral Effects on Newly Hatched Delta Smelt Larvae. [PDF]
Toxics, 2021 Salinity can interact with organic compounds and modulate their toxicity. Studies have shown that the fraction of pyrethroid insecticides in the aqueous phase increases with increasing salinity, potentially increasing the risk of exposure for aquatic ...
Segarra A +6 more
europepmc +2 more sources
Long-Term Trends in Summertime Habitat Suitability for Delta Smelt, Hypomesus transpacificus
San Francisco Estuary and Watershed Science, 2008 The biological productivity of river-dominated estuaries is affected strongly by variation in freshwater inflow, which affects nursery habitat quality. Previous research has shown this is generally true in the upper San Francisco Estuary, California, USA;
Matthew L. Nobriga +3 more
doaj +3 more sources
Role of freshwater floodplain-tidal slough complex in the persistence of the endangered delta smelt. [PDF]
PLoS One, 2019 Seasonal floodplain wetland is one of the most variable and diverse habitats found in coastal ecosystems, yet it is also one of the most highly altered by humans.
Mahardja B +4 more
europepmc +2 more sources
Characterization of Spawning Behavior in Cultured Delta Smelt [PDF]
North American Journal of Aquaculture, 2021 Abstract We examined cultured Delta Smelt Hypomesus transpacificus under laboratory settings to provide the first formal characterization of spawning behavior, which included the quantification of participants and diel spawning patterns.
Yi-Jiun Jean Tsai +4 more
openaire +1 more source
Modeling Delta Smelt Distribution for Hypothesized Swimming Behaviors [PDF]
San Francisco Estuary and Watershed Science, 2021 Delta Smelt, Hypomesus transpacificus, is an endangered pelagic fish native to the San Francisco Estuary. The distribution of Delta Smelt in the estuary shifts landward from low-salinity habitat to freshwater habitat before spawning. This spawning migration often coincides with the first substantial freshwater inflow to the estuary during winter.
Gross, Edward S. +5 more
openaire +3 more sources
Experimental validation of otolith-based age and growth reconstructions across multiple life stages of a critically endangered estuarine fish. [PDF]
PeerJ, 2021 Background The application of otolith-based tools to inform the management and conservation of fishes first requires taxon- and stage-specific validation.
Xieu W +10 more
europepmc +3 more sources
Histopathological assessment of seven year-classes of Delta Smelt
Science of The Total Environment, 2020 The Delta Smelt (Hypomesus transpacificus) is an imperiled, annual fish endemic to the Sacramento-San Joaquin Delta and San Francisco Estuary. This study examined the severity and prevalence of liver and gill lesions of juvenile through adult Delta Smelt from 2011 through 2017 collected from five regions throughout its habitat (n = 1,053).
Swee J. Teh +7 more
openaire +3 more sources
Developmental Staging and Salinity Tolerance in Embryos of the Delta Smelt, Hypomesus transpacificus. [PDF]
Aquaculture, 2019 Delta smelt (Hypomesus transpacificus) is a critically endangered species endemic to the San Francisco Bay Delta (SFBD). Important for the conservation of this species is understanding the physiological and ecological impacts contributing to their population decline, and current studies lack information on embryonic development.
Romney ALT +6 more
europepmc +6 more sources