Results 41 to 50 of about 909 (183)

Ultrastructure of Vitellogenic Ovarian Follicles and Morphogenesis of the Oocyte Envelope in the Eurasian Ruffe (Gymnocephalus cernua Linnaeus 1758) (Teleostei, Perciformes). [PDF]

J Morphol
Ruffe's vitellogenic ovarian follicles consists of a single oocyte surrounded by follicular cells, a basal lamina, and thecal cells. The oocytes are polarized and covered by a primary envelope. The follicular cells diversify into micropylar and mainbody cells. The latter have dark and bright cytoplasms.
Żelazowska M, Kujawa R.
europepmc   +2 more sources

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

Scientific 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, Jonathan L. Huang, Malte Willmes, Rachel A. Fichman, Tien-Chieh Hung, Luke T. Ellison, Troy A. Stevenson, Swee J. Teh, Bruce G. Hammock, Andrew A. Schultz, John L. Grimsich, Magdalena H. Huyskens, Qing-Zhu Yin, Leticia M. Cavole, Nicholas W. Botto, James A. Hobbs   +15 more
doaj   +1 more source

Using morphometric characteristics to identify the early life stages of two sympatric osmerids (Delta Smelt and Wakasagi - Hypomesus transpacificus and Hypomesus nipponensis) in the Sacramento-San Joaquin Delta, California

, 2005
Delta smelt, Hypomesus transpacificus, and indigenous fish to the Sacramento-San Joaquin Delta, California. USA, has been listed as a threatened species by the U.S. Fish and Wildlife Service.
Bridges, B B, Lynch, L, Grimaldo, R F, Wang, J CS   +3 more
core   +3 more sources

Long-term prediction of $$^{137}$$ 137 Cs in Lake Onuma on Mt. Akagi after the Fukushima accident using fractional diffusion model

Scientific Reports, 2021
The Fukushima Daiichi Nuclear Power Plant accident also contaminates lakes in Japan. Especially in closed lakes, there is a problem of prolonged low-level $$^{137}$$ 137 Cs contamination because the activity concentration of $$^{137}$$ 137 Cs declines ...
Eiichi Suetomi, Yuko Hatano, Masakiyo Fujita, Yukiko Okada, Kyuma Suzuki, Shun Watanabe   +5 more
doaj   +1 more source

Salinity Changes the Dynamics of Pyrethroid Toxicity in Terms of Behavioral Effects on Newly Hatched Delta Smelt Larvae

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 ...
Amelie Segarra, Florian Mauduit, Nermeen R. Amer, Felix Biefel, Michelle L. Hladik, Richard E. Connon, Susanne M. Brander   +6 more
doaj   +1 more source

Hypomesus pretiosus

, 2017
Hypomesus pretiosus CT ...
Joshua Egan
core   +2 more sources

The biodiversity crisis in Canada: failures and challenges of federal and sub-national strategic and legal frameworks

FACETS, 2021
Pacific sand lance (Ammodytes personatus) and surf smelt (Hypomesus pretiosus) are ecologically important forage fish in the marine food webs within the Salish Sea, including British Columbia (BC). Although important, little information exists around the
Justina C. Ray, Jaime Grimm, Andrea Olive   +2 more
doaj   +1 more source

Identifying and monitoring of forage fish spawning beaches in British Columbia’s Salish Sea for conservation of forage fish

FACETS, 2021
Pacific sand lance (Ammodytes personatus) and surf smelt (Hypomesus pretiosus) are ecologically important forage fish in the marine food webs within the Salish Sea, including British Columbia (BC). Although important, little information exists around the
Haley Tomlin, Chrissy Schellenberg, Jacklyn B. Barrs, Alanna J.S. Vivani, Pam Shaw   +4 more
doaj   +1 more source

Molecular identification of transplanted Hypomesus species in seven places

Journal of Fisheries of China, 2012
The fishes of smelt genus Hypomesus lives in fresh water,brackish water and coastal seas,distributes in the Northern Hemisphere.Now,the Japanese smelt H.nipponensis and the pond smelt H.olidus are the common species and mainly distributed in the northeast region in China.Their bodies are small with silvery white.The life span of the fishes is short and
Xiaoling GONG, Ying WU, Zhongkai CUI, Baolong BAO   +3 more
openaire   +1 more source

Growth and biological characteristics of pike perch Sander lucioperca (Linnaeus, 1758) in the Amur River

Известия ТИНРО, 2020
Linear and weight growth of pike perch in the Amur River estuary is considered using the data on age determined for 197 specimens. The growth is described by von Bertalanffy and Schmalhausen equations.
N. N. Semenchenko, E. V. Ostrovskaya
doaj   +1 more source