ADVERTISEMENT-CALL PREFERENCES IN DIPLOID-TETRAPLOID TREEFROGS (HYLA CHRYSOSCELIS AND HYLA VERSICOLOR): IMPLICATIONS FOR MATE CHOICE AND THE EVOLUTION OF COMMUNICATION SYSTEMS

Evolution ◽  
2005 ◽  
Vol 59 (2) ◽  
pp. 395 ◽  
Author(s):  
H. Carl Gerhardt
Keyword(s):  
Mate Choice ◽  
Communication Systems ◽  
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Hyla Versicolor ◽  
Hyla Chrysoscelis ◽  
Evolution Of Communication

scholarly journals A MULTIVARIATE ANALYSIS OF GENETIC VARIATION IN THE ADVERTISEMENT CALL OF THE GRAY TREEFROG,HYLA VERSICOLOR

Evolution ◽  
2014 ◽  
Vol 68 (6) ◽  
pp. 1629-1639 ◽  
Author(s):  
Allison M. Welch ◽  
Michael J. Smith ◽  
H. Carl Gerhardt
Keyword(s):  
Multivariate Analysis ◽  
Genetic Variation ◽  
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Hyla Versicolor ◽  
Gray Treefrog

scholarly journals Multimodal signalling in the North American barn swallow: a phenotype network approach

2015 ◽  
Vol 282 (1816) ◽  
pp. 20151574 ◽  
Author(s):  
Matthew R. Wilkins ◽  
Daizaburo Shizuka ◽  
Maxwell B. Joseph ◽  
Joanna K. Hubbard ◽  
Rebecca J. Safran
Keyword(s):  
Mate Choice ◽  
North American ◽  
Communication Systems ◽  
Animal Communication ◽  
Complex Signal ◽  
Network Approach ◽  
Barn Swallow ◽  
Complex Signals ◽  
The North ◽  
Phenotype Network

Complex signals, involving multiple components within and across modalities, are common in animal communication. However, decomposing complex signals into traits and their interactions remains a fundamental challenge for studies of phenotype evolution. We apply a novel phenotype network approach for studying complex signal evolution in the North American barn swallow ( Hirundo rustica erythrogaster ). We integrate model testing with correlation-based phenotype networks to infer the contributions of female mate choice and male–male competition to the evolution of barn swallow communication. Overall, the best predictors of mate choice were distinct from those for competition, while moderate functional overlap suggests males and females use some of the same traits to assess potential mates and rivals. We interpret model results in the context of a network of traits, and suggest this approach allows researchers a more nuanced view of trait clustering patterns that informs new hypotheses about the evolution of communication systems.

VoIP vs GSM Technology

2012 ◽  
pp. 280-298 ◽  
Author(s):  
Ikponmwosa Oghogho ◽  
Dickinson C. Odikayor ◽  
Abayomi-Alli Adebayo ◽  
Samuel T. Wara
Keyword(s):  
Communication Systems ◽  
Service Providers ◽  
Disruptive Technology ◽  
Counter Measures ◽  
Security Issues ◽  
Evolution Of Communication ◽  
Service Introduction ◽  
Technical Standardization ◽  
Intrusion Detection And Prevention

This chapter presents VoIP as a disruptive technology to GSM technology as well as the issues, controversies, and problems surrounding its deployment. It gives a general introduction of the evolution of communication systems from the POTS, to GSM, and now VoIP. Several issues that surround the deployment of VoIP such as provision of PSTN equivalent services by VoIP service providers, regulation of the service, introduction of latency and other counter measures by some operators, threat posed to PSTN providers due to emergence of VoIP, the need for technical standardization of VoIP, security issues, different cost structure, and quality of service provided were also discussed in details. Solutions and recommendations were suggested to overcome the challenges outlined. VoIP is presented as the way of the future for communication. When this finally happens depends on how fast the challenges outlined in this chapter are addressed. Future and emerging research trends in the deployment of VoIP such as locating users in a secure and reliable way, monitoring VoIP networks, as well as intrusion detection and prevention on SIP were also considered, after which, conclusion was made. This chapter is both informative and interesting.

scholarly journals Cry-wolf signals emerging from coevolutionary feedbacks in a tritrophic system

2015 ◽  
Vol 282 (1818) ◽  
pp. 20152169 ◽  
Author(s):  
Atsushi Yamauchi ◽  
Minus van Baalen ◽  
Yutaka Kobayashi ◽  
Junji Takabayashi ◽  
Kaori Shiojiri ◽  
...  
Keyword(s):  
Communication Systems ◽  
Feedback Loops ◽  
Tritrophic System ◽  
Evolution Of Communication ◽  
Herbivore Induced Plant Volatiles ◽  
Plant Signals ◽  
Selection For ◽  
The Stability ◽  
Plant Herbivore ◽  
Heavy Damage

For a communication system to be stable, senders should convey honest information. Providing dishonest information, however, can be advantageous to senders, which imposes a constraint on the evolution of communication systems. Beyond single populations and bitrophic systems, one may ask whether stable communication systems can evolve in multitrophic systems. Consider cross-species signalling where herbivore-induced plant volatiles (HIPVs) attract predators to reduce the damage from arthropod herbivores. Such plant signals may be honest and help predators to identify profitable prey/plant types via HIPV composition and to assess prey density via the amount of HIPVs. There could be selection for dishonest signals that attract predators for protection from possible future herbivory. Recently, we described a case in which plants release a fixed, high amount of HIPVs independent of herbivore load, adopting what we labelled a ‘cry-wolf’ strategy. To understand when such signals evolve, we model coevolutionary interactions between plants, herbivores and predators, and show that both ‘honest’ and ‘cry-wolf’ types can emerge, depending on the assumed plant–herbivore encounter rates and herbivore population density. It is suggested that the ‘cry-wolf’ strategy may have evolved to reduce the risk of heavy damage in the future. Our model suggests that eco-evolutionary feedback loops involving a third species may have important consequences for the stability of this outcome.

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