Modulated photophysics and rotational-relaxation dynamics of coumarin 153 in nonionic micelles: the role of headgroup size and tail length of the surfactants

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 9381-9388 ◽  
Author(s):  
Bijan K. Paul ◽  
Narayani Ghosh ◽  
Saptarshi Mukherjee
Keyword(s):  
Tail Length ◽  
Rotational Dynamics ◽  
Rotational Relaxation ◽  
Relaxation Dynamics ◽  
Coumarin 153

Effect of the variation of the headgroup size and tail length on the photophysics and rotational dynamics of embedded dye C153.

Comprehensive Model of the Photophysics ofN-Phenylnaphthalimides:  The Role of Solvent and Rotational Relaxation

1996 ◽  
Vol 100 (6) ◽  
pp. 2001-2011 ◽  
Author(s):  
Attila Demeter ◽  
Tibor Bérces ◽  
László Biczók ◽  
Véronique Wintgens ◽  
Pierre Valat ◽  
...  
Keyword(s):  
Rotational Relaxation ◽  
Comprehensive Model ◽  
Role Of Solvent

Cercarial swimming performance and its potential role as a key variable of trematode transmission

Parasitology ◽  
2020 ◽  
Vol 147 (12) ◽  
pp. 1369-1374 ◽  
Author(s):  
Neil J. Morley
Keyword(s):  
Swimming Speed ◽  
Potential Role ◽  
Swimming Performance ◽  
Tail Length ◽  
Host Searching ◽  
Aquatic Habitats ◽  
Searching Behaviour ◽  
Biological Variables ◽  
Using Data

AbstractTrematode transmission in aquatic habitats from molluscan intermediate host to vertebrate or invertebrate target host is typically undertaken by a free-living stage known as cercariae. Active locomotion by cercariae is a key aspect of the transmission process with the swimming speed potentially contributing to infection success. Individual cercarial species swim at different speeds but the significance of this to infection potential has not been determined. This study, using data from the scientific literature, investigates the role of swimming speed in relation to cercarial morphology, host-searching strategies and target host species. Larger cercariae swim faster than smaller ones with tail length being the principal factor controlling locomotion rates. Different cercarial morphotypes swim at different speeds, in particular, furcocercariae, with the exception of the schistosomes, being faster swimmers than mono-tailed cercariae. Host-searching behaviour has a significant influence on swimming speeds with ‘active-searching’ strategies swimming slower than those adopting ‘active-waiting’ or ‘prey mimcry’ strategies. Vertebrate-infecting cercariae swim faster than those infecting invertebrates with species targeting fish demonstrating the highest locomotion rates and those targeting arthropods the slowest speeds. The adaptions of individual cercarial swimming speeds to biological variables and their interactions with the physical processes of aquatic habitats are discussed.

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