Results 41 to 50 of about 298 (142)

Does tidal marsh restoration lead to the recovery of trophic pathways that support estuarine fishes? [PDF]

Ecol Appl
Abstract Evaluation of tidal marsh restoration success is typically based on the recovery of habitat size and target species. However, food‐web structure may provide valuable insight into ecosystem functioning trajectories. Here, we studied restored tidal marshes of different ages (new, young, old; spanning 1–150 years) in comparison with nearby ...
Pagliaro MD, De La Cruz SEW, Woo I, Sousa J, Rich N, Grimaldo L, Colombano D, Ruhí A.   +7 more
europepmc   +2 more sources

Delta Smelt (Hypomesus transpacificus) Exhibit Wide Variation in Spawning Behavior: An Investigation of Substrate Type, Diel Timing, and Participants [PDF]

Estuaries and Coasts, 2021
AbstractStudies of cultured populations can be invaluable to the conservation of imperiled species for which little is known and whose very low abundance in the wild can preclude studies with robust sample sizes. For example, in endangered delta smelt (Hypomesus transpacificus), conservation measures developed to mitigate population decline are ...
Yi-Jiun Jean Tsai, Samantha Noel Chase, Evan W. Carson, Leanna Zweig, Tien-Chieh Hung   +4 more
openaire   +1 more source

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.
Wilson Xieu, Levi S. Lewis, Feng Zhao, Rachel A. Fichman, Malte Willmes, Tien-Chieh Hung, Luke Ellison, Troy Stevenson, Galen Tigan, Andrew A. Schultz, James A. Hobbs   +10 more
doaj   +2 more sources

Exposure to permethrin or chlorpyrifos causes differential dose- and time-dependent behavioral effects at early larval stages of an endangered teleost species

Endangered Species Research, 2021
Pyrethroid and organophosphate pesticides are two of the most commonly used classes of insecticide worldwide. At sublethal concentrations, permethrin (a pyrethroid) and chlorpyrifos (an organophosphate) impact behavior in model fish species.
PC Mundy, KE Huff Hartz, CA Fulton, MJ Lydy, SM Brander, TC Hung, N Fangue, RE Connon   +7 more
doaj   +1 more source

Spawning Microhabitat Selection in Wild-Caught Delta Smelt Hypomesus transpacificus under Laboratory Conditions [PDF]

Estuaries and Coasts, 2019
AbstractVery little is understood about the spawning habitat of endangered delta smeltHypomesus transpacificus, which hinders ongoing recovery efforts such as wetland habitat restoration and spawning habitat augmentation. To address this, the spawning response of wild-caughtH.
Joan C. Lindberg, Yi-Jiun J. Tsai, Brittany D. Kammerer, Bradd Baskerville-Bridges, Tien-Chieh Hung   +4 more
openaire   +1 more source

Association of delta smelt with other small pelagic fishes suggests the potential for competition and proxy monitoring

Endangered Species Research
Development of habitat occupancy models for protected species with low detection rates can be difficult; however a possible solution is to use proxy species.
M Tillotson, CY Lee, C Garcia
doaj   +1 more source

Use of affinity analysis to guide habitat restoration and enhancement for the imperiled delta smelt

Endangered Species Research, 2020
Habitat restoration efforts in the upper San Francisco Estuary, including the Sacramento-San Joaquin Delta, California, move forward, despite a paucity of information on the environmental requirements of many targeted species.
Hamilton, SA, Murphy, DD
doaj   +1 more source

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 ...
Frederick Feyrer, Donald Portz, Darren Odum, Ken B Newman, Ted Sommer, Dave Contreras, Randall Baxter, Steven B Slater, Deanna Sereno, Erwin Van Nieuwenhuyse   +9 more
doaj   +1 more source

Physiological stress biomarkers reveal stocking density effects in late larval Delta Smelt (Hypomesus transpacificus) [PDF]

Aquaculture, 2016
Abstract Suboptimal fish stocking densities in experimental systems may elicit stress responses that can affect experimental results. Fish species, age and size, water chemistry and flow, and physical characteristics of the experimental system (e.g., tank, cage) are among the parameters to be considered when determining stocking densities.
Matthias Hasenbein, Nann A. Fangue, Juergen P. Geist, Lisa M. Komoroske, Richard E. Connon   +4 more
openaire   +3 more sources

Spawning behaviour between endemic delta smelt (Hypomesus transpacificus) and non‐native Wakasagi (H. nipponensis) in the San Francisco estuary

Journal of Fish Biology, EarlyView.
Abstract In the San Francisco Estuary, non‐native Wakasagi Hypomesus nipponensis hybridize with endemic and endangered Delta Smelt H. transpacificus, and all wild‐caught hybrids have a maternal Wakasagi parent. However, the mechanisms that facilitate or impede hybridization and explain sex‐biased hybrid asymmetry between these two species remain ...
Yi‐Jiun Jean Tsai, Luke Ellison, Amanda J. Finger, Evan W. Carson, Nann A. Fangue, Tien‐Chieh Hung   +5 more
wiley   +1 more source