scholarly journals Multiple cues add up in defining a figure on a ground

2013 ◽  
Vol 77 ◽  
pp. 51-58 ◽  
Author(s):  
Frédéric Devinck ◽  
Lothar Spillmann
Keyword(s):  
Multiple Cues

Phytoene desaturase-silenced citrus as a trap crop with multiple cues to attract Diaphorina citri, the vector of Huanglongbing

Plant Science ◽  
2021 ◽  
Vol 308 ◽  
pp. 110930
Author(s):  
Nabil Killiny ◽  
Yasser Nehela ◽  
Justin George ◽  
Mahnaz Rashidi ◽  
Lukasz L. Stelinski ◽  
...  
Keyword(s):  
Phytoene Desaturase ◽  
Diaphorina Citri ◽  
Trap Crop ◽  
Multiple Cues

Chemotactic and temperature-dependent responses of the Strongyloidoidea superfamily of nematodes

Parasitology ◽  
2021 ◽  
pp. 1-8
Author(s):  
Alex Dulovic ◽  
Mat Norman ◽  
Dorothee Harbecke ◽  
Adrian Streit
Keyword(s):  
Complex Mixture ◽  
Temperature Response ◽  
Parasitic Nematodes ◽  
Temperature Dependent ◽  
Direct Stimulation ◽  
Multiple Cues ◽  
Infective Larvae ◽  
Olfactory Sensation ◽  
Host Seeking ◽  
Infection Mode

Abstract Host-seeking behaviour and how a parasite identifies the correct host to infect remains a poorly understood area of parasitology. What is currently known is that host sensation and seeking behaviour is formed from a complex mixture of chemo-, thermo- and mechanosensory behaviours, of which chemosensation is the best studied. Previous studies of olfaction in parasitic nematodes suggested that this behaviour appears to be more closely related to target host and infection mode than phylogeny. However, there has not yet been a study comparing the chemotactic and temperature-dependent behaviours of very closely related parasitic and non-parasitic nematodes. To this end, we examined the temperature-dependent and chemotactic responses of the Strongyloidoidea superfamily of nematodes. We found differences in temperature response between the different species and within infective larvae. Chemotactic responses were highly divergent, with different attraction profiles between all species studied. When examining direct stimulation with fur, we found that it was insufficient to cause an attractive response. Overall, our results support the notion that olfactory sensation is more closely related to lifestyle and host range than phylogeny, and that multiple cues are required to initiate host-seeking behaviour.

scholarly journals Cue competition influences biconditional discrimination

2018 ◽  
Vol 72 (2) ◽  
pp. 182-192 ◽  
Author(s):  
Nicola C Byrom ◽  
Robin A Murphy
Keyword(s):  
Selective Attention ◽  
Cue Competition ◽  
Multiple Cues ◽  
Individual Stimulus ◽  
Stimulus Salience ◽  
Biconditional Discrimination

When multiple cues are presented in compound and trained to predict an outcome, the cues may compete for association with an outcome. However, if both cues are necessary for solution of the discrimination, then competition might be expected to interfere with the solution of the discrimination. We consider how unequal stimulus salience influences learning in configural discriminations, where no individual stimulus predicts the outcome. We compared two hypotheses: (1) salience modulation minimises the initial imbalance in salience and (2) unequal stimulus salience will impair acquisition of configural discriminations. We assessed the effect of varying stimulus salience in a biconditional discrimination (AX+, AY−, BX−, BY+). Across two experiments, we found stronger discrimination when stimuli had matched, rather than mismatched, salience, supporting our second hypothesis. We discuss the implications of this finding for Mackintosh’s model of selective attention, modified elemental models and configural models of learning.

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