scholarly journals MyrmicaAnts and Their Butterfly Parasites with Special Focus on the Acoustic Communication

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
F. Barbero ◽  
D. Patricelli ◽  
M. Witek ◽  
E. Balletto ◽  
L. P. Casacci ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Acoustic Communication ◽  
Food Plant ◽  
Chemical Mimicry ◽  
Special Focus ◽  
Social Parasites ◽  
Ant Nests ◽  
Arthropod Species

About 10,000 arthropod species live as ants' social parasites and have evolved a number of mechanisms allowing them to penetrate and survive inside the ant nests.Myrmicacolonies, in particular, are exploited by numerous social parasites, and the presence of their overwintering brood, as well as of their polygyny, contributes to make them more vulnerable to infestation. Butterflies of the genusMaculineaare among the most investigatedMyrmicainquilines. These lycaenids are known for their very complex biological cycles.Maculineaspecies are obligated parasites that depend on a particular food plant and on a specificMyrmicaspecies for their survival.Maculinealarvae are adopted byMyrmicaants, which are induced to take them into their nests by chemical mimicry. Then the parasite spends the following 11–23 months inside the ants' nest. Mimicking the acoustic emission of the queen ants,Maculineaparasites not only manage to become integrated, but attain highest rank within the colony. Here we review the biology ofMaculinea/Myrmicasystem with a special focus on some recent breakthrough concerning their acoustical patterns.

Cleptoparasites, social parasites and a common host: Chemical insignificance for visiting host nests, chemical mimicry for living in

2012 ◽  
Vol 58 (9) ◽  
pp. 1259-1264 ◽  
Author(s):  
Alessia Uboni ◽  
Anne-Geneviève Bagnères ◽  
Jean-Philippe Christidès ◽  
Maria Cristina Lorenzi
Keyword(s):  
Chemical Mimicry ◽  
Social Parasites

scholarly journals Behavior ofPaussus favieri(Coleoptera, Carabidae, Paussini): A Myrmecophilous Beetle Associated withPheidole pallidula(Hymenoptera, Formicidae)

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Emanuela Maurizi ◽  
Simone Fattorini ◽  
Wendy Moore ◽  
Andrea Di Giulio
Keyword(s):  
The Body ◽  
Chemical Mimicry ◽  
Cleaning Behavior ◽  
Ant Nests ◽  
Pheidole Pallidula ◽  
Rewarding Behavior ◽  
Post Hoc ◽  
First Time

Several specimens of the myrmecophilous beetlePaussus favieriwere reared in ant nests ofPheidole pallidula. Their interactions were recorded and all behaviors observed are described. Duration and frequency of five behaviors ofP. favieriwere analyzed with ANOVA and post hoc Tukey tests; these comprised rewarding, antennal shaking, antennation, escape, and “no contact”. Significant differences both in duration and in frequency among behaviors were detected. The main result is that the rewarding behavior, during which the beetle provides attractive substances to the host, is performed significantly more frequently than all others. This result strongly supports the hypothesis that the chemicals provided by the beetles and licked by the ants are of great importance for the acceptance and the full integration ofP. favieriin the ant society. This result also suggests that, contrary to previous findings and interpretations, the myrmecophilous strategy ofP. favieriis very similar to the symphilous strategy described forP. turcicus. The occasional interactions of some beetle specimens with theP. pallidulaqueen were recorded, illustrated, and discussed, indicating the possibility of a more complex strategy ofP. favieriinvolving a chemical mimicry with the queen. In addition, the courtship performed by the beetle is described for the first time, together with a peculiar “cleaning” behavior, which we hypothesize functions to spread antennal chemicals over the body surfaces.

scholarly journals Say what? On the transmission of acoustic signals in a Neotropical green city

2021 ◽  
Author(s):  
Carlos M. Trujillo-Torres ◽  
Fernando González-García ◽  
Ian MacGregor-Fors
Keyword(s):  
Acoustic Emission ◽  
Field Experiment ◽  
Acoustic Communication ◽  
Acoustic Signal ◽  
Acoustic Signals ◽  
Major Barrier ◽  
Artificial Structures ◽  
Emission Point ◽  
The City ◽  
Green City

AbstractCities do not only represent noisy systems, but also limit acoustic communication given the complex array of artificial structures through which signals can be trapped or obscured. In this study we performed a field experiment to evaluate the loss of energy of a standardized acoustic emission (generated with notes and a call of the Clay-colored Thrush – Turdus grayi). For this, we emitted the acoustic signal and recovered it at increasing radial distances from 26 fixed emission points (i.e., 10 m, 20 m, 40 m, 80 m, 120 m, 160 m) located across the city of Xalapa (Mexico). Our results show that the emitted signal was not recorded beyond 80 m from the emission point. The number and height of the assessed physical obstacles between the emitted signal and the receiving equipment showed to drive our main result, with built elements representing a major barrier than vegetation ones in terms of the recovered energy of the emitted signal. Interestingly, we found that, for both types of physical obstacles, a height of ~7 m was a common threshold influencing the recovered energy of the emitted signal.

Current concepts of the interventional treatment of proximal supraaortic vessel stenosis

VASA ◽  
2012 ◽  
Vol 41 (5) ◽  
pp. 313-318 ◽  
Author(s):  
Ernemann ◽  
Bender ◽  
Melms ◽  
Brechtel ◽  
Kobba ◽  
...  
Keyword(s):  
Treatment Strategies ◽  
Carotid Bifurcation ◽  
Current Treatment ◽  
Long Term Results ◽  
Clinical Indication ◽  
Interventional Treatment ◽  
Special Focus ◽  
Brachiocephalic Artery ◽  
Treatment Concepts ◽  
Angioplasty And Stenting

Interventional therapies using angioplasty and stenting of symptomatic stenosis of the proximal supraaortic vessels have evolved as safe and effective treatment strategies. The aim of this paper is to summarize the current treatment concepts for stenosis in the subclavian and brachiocephalic artery with regard to clinical indication, interventional technique including selection of the appropriate vascular approach and type of stent, angiographic and clinical short-term and long-term results and follow-up. The role of hybrid interventions for tandem stenoses of the carotid bifurcation and brachiocephalic artery is analysed. A systematic review of data for angioplasty and stenting of symptomatic extracranial vertebral artery stenosis is discussed with a special focus on restenosis rate.

Social Psychology and Noninvasive Electrical Stimulation

2016 ◽  
Vol 21 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Paulo S. Boggio ◽  
Gabriel G. Rêgo ◽  
Lucas M. Marques ◽  
Thiago L. Costa
Keyword(s):  
Social Psychology ◽  
Social Neuroscience ◽  
Special Focus ◽  
Social Pain ◽  
Substantial Evidence ◽  
Social Decision ◽  
Correlational Research ◽  
Neuroscience Research ◽  
Social Decision Making ◽  
Brain Behavior

Abstract. Social neuroscience and psychology have made substantial advances in the last few decades. Nonetheless, the field has relied mostly on behavioral, imaging, and other correlational research methods. Here we argue that transcranial direct current stimulation (tDCS) is an effective and relevant technique to be used in this field of research, allowing for the establishment of more causal brain-behavior relationships than can be achieved with most of the techniques used in this field. We review relevant brain stimulation-aided research in the fields of social pain, social interaction, prejudice, and social decision-making, with a special focus on tDCS. Despite the fact that the use of tDCS in Social Neuroscience and Psychology studies is still in its early days, results are promising. As better understanding of the processes behind social cognition becomes increasingly necessary due to political, clinical, and even philosophical demands, the fact that tDCS is arguably rare in Social Neuroscience research is very noteworthy. This review aims at inspiring researchers to employ tDCS in the investigation of issues within Social Neuroscience. We present substantial evidence that tDCS is indeed an appropriate tool for this purpose.

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