Results 101 to 110 of about 813 (188)

Otolith Growth and Microchemistry to Determine Variability in Recruitment Success of Delta Smelt [PDF]

, 2010
This project employed otolith geochemistry to study the recruit- ment patterns and growth rates of delta smelt before and during the Pelagic Organism Decline (POD) in the San Francisco Bay-Delta. The delta smelt was selected as the target species for the
Hobbs, James A
core  

CRISPR‐based environmental DNA detection for a rare endangered estuarine species

Environmental DNA
Environmental DNA (eDNA) methods complement traditional aquatic monitoring surveys and are especially advantageous for rare and listed species to detect spatial and temporal distribution patterns.
Raman P. Nagarajan, Leigh Sanders, Natalie Kolm, Alejandro Perez, Taylor Senegal, Brian Mahardja, Melinda R. Baerwald, Andrea D. Schreier   +7 more
doaj   +1 more source

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

San 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 ...
Steven B. Slater, Randall D. Baxter
doaj  

Examples of raw images of (A) delta smelt and (B) threadfin shad obtained by the SmeltCam during our field study.

, 2013
Note that in the delta smelt image all of the fins, including the adipose fin, are clearly visible and allow delta smelt to be differentiated from other species such as longfin smelt.
Darren Odum (430929), Dave Contreras (430932), Ken B. Newman (430930), Randall Baxter (430933), Deanna Sereno (430935), Ted Sommer (430931), Donald Portz (430928), Erwin Van Nieuwenhuyse (430936), Frederick Feyrer (430927), Steven B. Slater (430934)   +9 more
core   +1 more source

Studies on The Olfactory Biology and Behavioral Responses to Copper Exposure of The Native Indicator Species Delta Smelt (Hypomesus transpacificus) [PDF]

, 2021
The Delta Smelt (Hypomesus transpacificus) is a small Osmerid native to the San Francisco Bay Delta (Bay-Delta) in California. Delta Smelt population has declined dramatically since the species was declared as endangered in 1993, and now has been listed ...
Triana Garcia, Pedro Alejandro
core  

Gross morphology, histology, and ultrastructure of the olfactory rosette of a critically endangered indicator species, the Delta Smelt, Hypomesus transpacificus. [PDF]

J Comp Physiol A Neuroethol Sens Neural Behav Physiol, 2021
Triana-Garcia PA, Nevitt GA, Pesavento JB, Teh SJ.   +3 more
europepmc   +1 more source

Otolith-based comparisons of wild versus hatchery-origin delta smelt

Endangered Species Research
The rapid decline of California’s endangered delta smelt Hypomesus transpacificus has called for immediate and effective conservation actions. Since 2021, up to 92000 cultured delta smelt have been released annually into the Sacramento-San Joaquin River ...
LS Lewis, CT Denney, LM Cavole, AW Lama, CY Chung, F Zhao, JA Hobbs, M Willmes, TC Hung, JJ Glessner, S Teh, BG Hammock   +11 more
doaj   +1 more source

A Covered Cod-End and Tow-Path Evaluation of Midwater Trawl Gear Efficiency for Catching Delta Smelt (Hypomesus transpacificus)

San Francisco Estuary and Watershed Science, 2017
https://doi.org/10.15447/sfews.2017v15iss4art3For nearly 50 years, the California Department of Fish and Wildlife has used a midwater trawl to intensively monitor fish populations in the San Francisco Estuary during the fall, sampling over 100 locations
Lara Mitchell, Ken Newman, Randall Baxter   +2 more
doaj  

Feeding ecology of adult delta smelt in the San Francisco Estuary

, 2018
The delta smelt (Hypomesus transpacificus) is a small, pelagic, endangered fish endemic to the San Francisco Estuary. Declines in abundance have stimulated interest in its feeding habits, but most reports have examined feeding by larvae and juveniles. We
Aaron David Johnson
core  

Frequency histogram of the confidence level (%) that delta smelt were correctly identified to species.

, 2013
Frequency histogram of the confidence level (%) that delta smelt were correctly identified to species.
Darren Odum (430929), Dave Contreras (430932), Ken B. Newman (430930), Randall Baxter (430933), Deanna Sereno (430935), Ted Sommer (430931), Donald Portz (430928), Erwin Van Nieuwenhuyse (430936), Frederick Feyrer (430927), Steven B. Slater (430934)   +9 more
core   +1 more source