Results 171 to 180 of about 7,306 (194)

Physiological effects of salinity on Delta Smelt, Hypomesus transpacificus

Fish Physiology and Biochemistry, 2015
Abiotic factors like salinity are relevant to survival of pelagic fishes of the San Francisco Bay Estuary. We tested the effects of 4 parts per thousand (ppt) salinity increases on Delta Smelt (DS) in a laboratory experiment simulating salinity increases that might occur around the low-salinity zone (LSZ) (
Brittany D, Kammerer, Tien-Chieh, Hung, Randall D, Baxter, Swee J, Teh   +3 more
openaire   +2 more sources

Reduced swimming performance in delta smelt infected with Mycobacterium spp.

Journal of Fish Biology, 2002
Delta smelt Hypomesus transpacificus infected with Mycobacterium spp. swam significantly more slowly (mean ±s.e., 24±5 ± 1·2 cm s −1) than uninfected fish (30·0 ± 1·7 cm s −1). Differences in swimming performance were not attributable to differences in fish size (Ls or wet mass), condition factor or laboratory holding duration.
C. Swanson, D. V. Baxa, P. S. Young, J. J. Cech, R. P. Hedrick   +4 more
openaire   +2 more sources

Tidal Wetlands Associated with Foraging Success of Delta Smelt

Estuaries and Coasts, 2019
Delta smelt (Hypomesus transpacificus), an annual fish endemic to the San Francisco Estuary (SFE), is imperiled. One recovery strategy is to restore tidal wetlands, thereby increasing productivity and prey abundance. However, the link between tidal wetlands and foraging of delta smelt is not yet established.
Bruce G. Hammock, Rosemary Hartman, Steven B. Slater, April Hennessy, Swee J. Teh   +4 more
openaire   +1 more source

Characterizing the stress response in juvenile Delta smelt exposed to multiple stressors

Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2022
The Delta Smelt (Hypomesus transpacificus), once an abundant fish endemic to the Sacramento-San Joaquin Estuary, is now on the brink of extinction. Due to the high sensitivity of this species, knowledge of their stress response will be vital to their future survival and sustainability.
Christina, Pasparakis, Alexandra N, Wampler, Toni, Lohroff, Francine, DeCastro, Dennis E, Cocherell, Evan W, Carson, Tien-Chieh, Hung, Richard E, Connon, Nann A, Fangue, Anne E, Todgham   +9 more
openaire   +2 more sources

TaqMan assays for the genetic identification of delta smelt (Hypomesus transpacificus) and wakasagi smelt (Hypomesus nipponensis)

Molecular Ecology Resources, 2011
AbstractWe have developed species‐specific TaqMan assays for two California fish species, the threatened delta smelt (Hypomesus transpacificus) and the introduced wakasagi smelt (Hypomesus nipponensis). The assays are capable of correctly identifying each species with 100% accuracy, with no cross‐species amplification.
Melinda R, Baerwald, Gregg, Schumer, Brian M, Schreier, Bernie, May   +3 more
openaire   +2 more sources

Evaluation of Calcein and Photonic Marking for Cultured Delta Smelt

North American Journal of Fisheries Management, 2014
Abstract The Delta Smelt Hypomesus transpacificus is a protected osmerid endemic to the San Francisco estuary of California. We conducted laboratory tests on marked versus unmarked juvenile adult smelt to evaluate (1) calcein mark intensity and postmarking survival for juveniles and adults, (2) photonic mark retention and survival of ...
Gonzalo Castillo, Jerry Morinaka, Robert Fujimura, Jason DuBois, Bradd Baskerville-Bridges, Joan Lindberg, Galen Tigan, Luke Ellison, James Hobbs   +8 more
openaire   +1 more source

Spawning Behavior of Cultured Delta Smelt in a Conservation Hatchery

North American Journal of Aquaculture, 2015
Abstract Understanding reproductive behavior of sensitive species is crucial for their conservation. The Delta Smelt Hypomesus transpacificus is a federally threatened, state-endangered fish whose reproductive behavior is poorly understood.
Melanie LaCava, Kathleen Fisch, Meredith Nagel, Joan C Lindberg, Bernie May, Amanda J Finger   +5 more
openaire   +1 more source

Agencies Develop Strategy to Save California's Delta Smelt

Journal AWWA, 2016
This department offers industry announcements covering new contracts, events, awards, studies and regulations.
openaire   +1 more source

Using Natural Marks to Identify Individual Cultured Adult Delta Smelt

North American Journal of Fisheries Management, 2018
Abstract Natural marks can provide a noninvasive approach to identify individual fishes, such as the endangered Delta Smelt Hypomesus transpacificus. We evaluated the feasibility of chromatophores as natural marks in cultured adult Delta Smelt and used the dorsal view of the head, where chromatophores are particularly abundant.
Gonzalo C. Castillo, Marade E. Sandford, Tien-Chieh Hung, Galen Tigan, Joan C. Lindberg, Wan-Ru Yang, Erwin E. Van Nieuwenhuyse   +6 more
openaire   +1 more source