scholarly journals Does Cognition Have a Role in Plasticity of “Innate Behavior”? A Perspective From Drosophila

2018 ◽  
Vol 9 ◽  
Author(s):  
E. Axel Gorostiza
Keyword(s):  
Innate Behavior

The economics of escalation

2021 ◽  
Vol 33 (1) ◽  
pp. 106-140
Author(s):  
Fabio D’Orlando ◽  
Sharon Ricciotti
Keyword(s):  
Human Nature ◽  
Budget Constraint ◽  
Theoretical Treatment ◽  
Jel Codes ◽  
Innate Behavior ◽  
Hedonic Adaptation ◽  
The Past ◽  
Subjective Scale ◽  
The Subject ◽  
Positional Effects

Escalation is a key characteristic of many consumption behaviors that has not received theoretical attention. This paper aims to propose both a definition and a theoretical treatment of escalation in consumption. We define escalation as a subject’s attempt to obtain “more” or engage in consumption behaviors that are “more intense” on a measurable, quantitative or qualitative, objective or subjective, scale (more difficult ski slopes, stronger drugs, harder sex, better restaurants etc.), even if the subject preferred less intense consumption behaviors in the past. Further, this evolution in behavior also occurs if the budget constraint does not change. We will find endogenous and exogenous theoretical microfoundations for escalation in models of hedonic adaptation, desire for novelty, acquisition of consumption skills, rising aspirations, positional effects, and envy. However, we will also discuss the possibility that the tendency to escalate is a specific innate behavior inherent to human nature. Finally, we will propose a preliminary theoretical formalization of such behavior and indicate the possible implications of taking escalation into adequate consideration. JEL codes: B52, D11, D90, D91, I31

scholarly journals Drosulfakinin signaling modulates female sexual receptivity in Drosophila

2021 ◽  
Author(s):  
Chuan Zhou ◽  
Tao Wang ◽  
Biyang Jing ◽  
Bowen Deng ◽  
Kai Shi ◽  
...  
Keyword(s):  
Sexual Behavior ◽  
Neuronal Activity ◽  
Input Signal ◽  
Sexual Receptivity ◽  
Innate Behavior ◽  
Female Sexual Behavior ◽  
Downstream Signaling ◽  
Biological Importance ◽  
Survival And Reproduction ◽  
Female Sexual Receptivity

Female sexual behavior as an innate behavior is of prominent biological importance for survival and reproduction. However, molecular and circuit mechanisms underlying female sexual behavior is not well understood. Here, we identify the Cholecystokinin-like peptide Drosulfakinin (DSK) promotes female sexual behavior in Drosophila. Manipulation both Dsk and DSK neuronal activity impact female sexual receptivity. In addition, we reveal that Dsk-expressing neurons receive input signal from R71G01GAL4 neurons to promote female sexual receptivity. Based on intersectional technique, we further found the regulation of female sexual behavior relies mainly on medial DSK neurons rather than lateral DSK neurons, and medial DSK neurons modulate female sexual behavior by acting on its receptor CCKLR-17D3. Thus, we characterized DSK/CCKLR-17D3 as R71G01GAL4 neurons downstream signaling to regulate female sexual behavior.

scholarly journals Attraction to conspecifcs in Rhinella icterica and R. ornata tadpoles (Anura: Bufonidae)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Alexandre Polettini Neto ◽  
Jaime Bertoluci
Keyword(s):  
Social Behavior ◽  
Atlantic Forest ◽  
Laboratory Experiments ◽  
Random Distribution ◽  
Social Process ◽  
Sympatric Species ◽  
The Other ◽  
Southeastern Brazil ◽  
Ecological Processes ◽  
Innate Behavior

Abstract: Tadpoles are able to perceive and discriminate signals from environment and they may use this ability in behaviors and ecological processes. Recognition mechanisms may be involved in schooling by means of attraction among individuals, characterizing a social process. By means of laboratory experiments the present study investigated the presence or absence of attraction to conspecifics in tadpoles of Rhinella icterica and R. ornata, two sympatric species from the Atlantic Forest of southeastern Brazil. We collected eggs of these two species in the field and reared them in laboratory according to two different methods (isolated or in groups of siblings). Tadpoles were submitted to experiments of choice between conspecifics, heterospecifics, and an empty compartment. Rhinella icterica tadpoles preferred to associate with conspecifics rather than R. ornata tadpoles, and we verified this is an innate behavior. Rhinella ornata tadpoles failed to discriminate between conspecifics and R. icterica tadpoles. When submitted to choice between a group of tadpoles of the other species and an empty compartment, R. icterica tadpoles presented random distribution, while R. ornata tadpoles preferred to associate with heterospecifics. Our results indicate R. icterica tadpoles have preference to associate with conspecifics, while R. ornata tadpoles may school indiscriminately. This study contributes for a better understanding of larval anuran social behavior.

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