Pacific lamprey (Entosphenus tridentatus) ammocoetes exposed to contaminated Portland Harbor sediments: Method development and effects on survival, growth, and behavior

2016 ◽  
Vol 35 (8) ◽  
pp. 2092-2102 ◽  
Author(s):  
Julia R. Unrein ◽  
Jeffrey M. Morris ◽  
Rob S. Chitwood ◽  
Joshua Lipton ◽  
Jennifer Peers ◽  
...  
Keyword(s):  
Method Development ◽  
Pacific Lamprey ◽  
Entosphenus Tridentatus ◽  
And Behavior ◽  
Harbor Sediments

Free-swimming speeds and behavior in adult Pacific Lamprey, Entosphenus tridentatus

2016 ◽  
Vol 99 (12) ◽  
pp. 969-974 ◽  
Author(s):  
Stewart B. Reid ◽  
Damon H. Goodman
Keyword(s):  
Free Swimming ◽  
Pacific Lamprey ◽  
Entosphenus Tridentatus ◽  
And Behavior

LC-MS/MS Method Development and Validation for the Determination of Ilexsaponin A1 and Its Application in Intestinal Bacterial Metabolic Study

2020 ◽  
Vol 16 (6) ◽  
pp. 774-781
Author(s):  
Liang Wu ◽  
An Kang ◽  
Yujie Lin ◽  
Chenxiao Shan ◽  
Zhu Zhou ◽  
...  
Keyword(s):  
Method Development ◽  
Ischemia Reperfusion ◽  
Scientific Evidence ◽  
Potential Effect ◽  
Bacterial Strains ◽  
Metabolic Potential ◽  
Bifidobacterium Adolescentis ◽  
Metabolic Behavior ◽  
And Behavior

Background: Ilexsaponin A1, one of the most representative triterpene saponin components in the roots of I. pubescens, showed its effects in anticoagulation and antithrombosis, attenuating ischemia-reperfusion-induced myocardial, angiogenesis and inhibiting phosphodiesterase. Objective: Reveal the key intestinal bacterial strains responsible for ilexsaponin A1 metabolism, and clarify their metabolic behavior. Methods: An accurate and sensitive LC-MS/MS method for the determination of “ilexsaponin A1 in General Anaerobic Medium (GAM) broth” was established and systematically validated. Then it was applied to screen and study the metabolic potential of the intestinal bacterial strains in an anaerobic incubation system. Results: Quantitation of ilexsaponin A1 could be performed within an analytical run time of 14.5 min, in the linear range of 2 - 2000 ng/ml. Enterobacter sakazakii, Bifidobacterium breve, Bifidobacterium adolescentis, Bifidobacterium catenulatum, and Bifidobacterium angulatum were identified to have a potential effect to metabolize ilexsaponin A1 to different extents; and further bacterial metabolic studies were performed to clarify their metabolic capacity and behavior. Conclusion: This paper contributes to a better understanding of the intestinal bacterial metabolism of ilexsaponin A1 and provides scientific evidence for its clinical application. Additionally, the importance of intestinal bacterial strains in the disposition of natural products was also highlighted.

scholarly journals Predicting larval metamorphosis of Pacific lamprey Entosphenus tridentatus through measurements of length and mass

2020 ◽  
Vol 97 (3) ◽  
pp. 804-816
Author(s):  
Timothy A. Whitesel ◽  
Michelle McGree ◽  
Gregory S. Silver
Keyword(s):  
Larval Metamorphosis ◽  
Pacific Lamprey ◽  
Entosphenus Tridentatus

Marine biology of the pacific lamprey Entosphenus tridentatus

2019 ◽  
Vol 29 (4) ◽  
pp. 767-788 ◽  
Author(s):  
Benjamin J. Clemens ◽  
Laurie Weitkamp ◽  
Kevin Siwicke ◽  
Joy Wade ◽  
Julianne Harris ◽  
...  
Keyword(s):  
Marine Biology ◽  
Pacific Lamprey ◽  
The Pacific ◽  
Entosphenus Tridentatus

Occurrence of larval Pacific lamprey Entosphenus tridentatus from Japan, detected by random amplified polymorphic DNA (RAPD) analysis

2005 ◽  
Vol 52 (3) ◽  
pp. 297-301 ◽  
Author(s):  
Yuji Yamazaki ◽  
Norio Fukutomi ◽  
Norio Oda ◽  
Koichi Shibukawa ◽  
Yasuo Niimura ◽  
...  
Keyword(s):  
Rapd Analysis ◽  
Random Amplified Polymorphic Dna ◽  
Pacific Lamprey ◽  
Entosphenus Tridentatus

Passage and Behavior of Radio-Tagged Adult Pacific Lampreys (Entosphenus tridentatus) at the Willamette Falls Project, Oregon

2010 ◽  
Vol 84 (3) ◽  
pp. 233-242 ◽  
Author(s):  
Matthew G. Mesa ◽  
Robert J. Magie ◽  
Elizabeth S. Copeland
Keyword(s):  
Entosphenus Tridentatus ◽  
And Behavior

Using genetic pedigree reconstruction to estimate effective spawner abundance from redd surveys: an example involving Pacific lamprey (Entosphenus tridentatus)

2017 ◽  
Vol 74 (10) ◽  
pp. 1646-1653 ◽  
Author(s):  
S.L. Whitlock ◽  
L.D. Schultz ◽  
C.B. Schreck ◽  
J.E. Hess
Keyword(s):  
Pedigree Reconstruction ◽  
Spawning Ground ◽  
Pacific Lamprey ◽  
Entosphenus Tridentatus ◽  
Mature Fish ◽  
Survey Methodologies ◽  
Sexually Mature ◽  
Substantial Effort

Redd surveys are a commonly used technique for indexing the abundance of sexually mature fish in streams; however, substantial effort is often required to link redd counts to actual spawner abundance. In this study, we describe how genetic pedigree reconstruction can be used to estimate effective spawner abundance in a stream reach, using Pacific lamprey (Entosphenus tridentatus) as an example. Lamprey embryos were sampled from redds within a 2.5 km reach of the Luckiamute River, Oregon, USA. Embryos were found in only 20 of the 48 redds sampled (suggesting 58% false redds); however, multiple sets of parents were detected in 44% of the true redds. Estimates from pedigree reconstruction suggested that there were 0.48 (95% CI: 0.29–0.88) effective spawners per redd and revealed that individual lamprey contributed gametes to a minimum of between one and six redds, and in one case, spawned in patches that were separated by over 800 m. Our findings demonstrate the utility of pedigree reconstruction techniques for both inferring spawning-ground behaviors and providing useful information for refining lamprey redd survey methodologies.

Pre-spawning migration of adult Pacific lamprey, Entosphenus tridentatus, in the Willamette River, Oregon, U.S.A.

2011 ◽  
Vol 93 (2) ◽  
pp. 245-254 ◽  
Author(s):  
Benjamin J. Clemens ◽  
Matthew G. Mesa ◽  
Robert J. Magie ◽  
Douglas A. Young ◽  
Carl B. Schreck
Keyword(s):  
Spawning Migration ◽  
Pacific Lamprey ◽  
Willamette River ◽  
Entosphenus Tridentatus

scholarly journals A Noninvasive Tool to Assess the Distribution of Pacific Lamprey (Entosphenus tridentatus) in the Columbia River Basin

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0169334 ◽  
Author(s):  
Kellie J. Carim ◽  
J. Caleb Dysthe ◽  
Michael K. Young ◽  
Kevin S. McKelvey ◽  
Michael K. Schwartz
Keyword(s):  
River Basin ◽  
Columbia River ◽  
Columbia River Basin ◽  
Pacific Lamprey ◽  
Entosphenus Tridentatus
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