Interspecific Predation of Common Strait of Georgia Planktonic Coelenterates: Laboratory Evidence

1980 ◽  
Vol 37 (1) ◽  
pp. 120-123 ◽  
Author(s):  
Mary Needler Arai ◽  
J. Roger Jacobs
Keyword(s):  
Aurelia Aurita ◽  
Strait Of Georgia ◽  
Aequorea Victoria ◽  
Laboratory Evidence ◽  
Laboratory Conditions ◽  
Interspecific Predation ◽  
The Common

Among the common pelagic coelenterates of Departure Bay, B.C., Stomotoca atra, Eutonina indicans, Aequorea victoria, and Aurelia aurita show predation on other species under laboratory conditions. Selectivity is demonstrated in the diets of each of these predators.Key words: Stomotoca atra, Eutonina indicans, Aequorea victoria, medusae, feeding, Aurelia aurita

Determining baseline toxicity of ozone against an insecticide‐susceptible strain of the common bed bug, Cimex lectularius L. under laboratory conditions

2020 ◽  
Vol 76 (9) ◽  
pp. 3108-3116 ◽  
Author(s):  
James Feston ◽  
Sudip Gaire ◽  
Mahsa Fardisi ◽  
Linda J Mason ◽  
Ameya D Gondhalekar
Keyword(s):  
Susceptible Strain ◽  
Cimex Lectularius ◽  
Bed Bug ◽  
Laboratory Conditions ◽  
The Common

scholarly journals THE ROLE OF COMPLEMENT IN RESISTANCE TO ENDOGENOUS AND EXOGENOUS INFECTION WITH A COMMON MOUSE PATHOGEN, CORYNEBACTERIUM KUTSCHERI

1966 ◽  
Vol 124 (4) ◽  
pp. 689-699 ◽  
Author(s):  
Linda D. Caren ◽  
L. T. Rosenberg
Keyword(s):  
Survival Advantage ◽  
Mouse Serum ◽  
Equal Frequency ◽  
Laboratory Conditions ◽  
Immune Hemolysis ◽  
The Common ◽  
Deficient Mice ◽  
Normal Laboratory ◽  
Better Than

In mice, the presence or absence of a single complement (C') component, called hc1, is controlled by two alleles at the Hc locus. The sera of mice which lack this C' component do not manifest C'-mediated immune hemolysis. When challenged with the common mouse pathogen, Corynebacterium kutscheri, mice possessing hemolytic C' fare slightly better than C'-deficient mice. When mice harboring latent C. kutscheri are administered hydrocortisone, which depresses mouse serum C' levels, pseudotuberculosis is activated with equal frequency in mice of both C' types. These data suggest that in at least one situation the presence of the complete hemolytic C' system may be advantageous to the mouse. In contrast, evidence is presented which shows that under normal laboratory conditions, C'-deficient B10.D2 "old line" mice (Hc0/Hc0) have a survival advantage over C'-positive B10.D2 "new line" mice (Hc1/Hic1) during the first 3 wk of life. It is therefore concluded that mouse hemolytic C' has a balanced survival value—that is, under one set of conditions it may be advantageous, whereas in another situation, it may be disadvantageous.

Predation by Medusae on Pacific Herring (Clupea harengus pallasi) Larvae

1982 ◽  
Vol 39 (11) ◽  
pp. 1537-1540 ◽  
Author(s):  
Mary Needler Arai ◽  
Douglas E. Hay
Keyword(s):  
British Columbia ◽  
Coastal Waters ◽  
Laboratory Tests ◽  
Clupea Harengus ◽  
Aurelia Aurita ◽  
Pacific Herring ◽  
Aequorea Victoria ◽  
Clupea Harengus Pallasi

In laboratory tests young Pacific herring (Clupea harengus pallasi) larvae were eaten by several species of hydromedusae common in coastal waters off British Columbia, including the previously controversial Sarsia tubulosa and by the scyphomedusa Aurelia aurita. Field collections and observations confirmed that the distributions of medusae and larvae overlap and that some medusae feed on herring larvae in nature. In coastal waters and bays of British Columbia, the hydromedusae Sarsia tubulosa or Aequorea victoria may be most abundant during the time of peak herring larvae abundance.Key words: herring, larvae, Clupea, Sarsia, Aequorea, predation, medusae

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