scholarly journals Anthropogenic ecosystem fragmentation drives shared and unique patterns of sexual signal divergence among three species of Bahamian mosquitofish

2015 ◽  
Vol 8 (7) ◽  
pp. 679-691 ◽  
Author(s):  
Sean T. Giery ◽  
Craig A. Layman ◽  
R. Brian Langerhans
Keyword(s):  
Sexual Signal ◽  
Ecosystem Fragmentation ◽  
Signal Divergence

Sympatric sexual signal divergence among North American Calopteryx damselflies is correlated with increased intra- and interspecific male–male aggression

2013 ◽  
Vol 68 (2) ◽  
pp. 275-282 ◽  
Author(s):  
Vikram K. Iyengar ◽  
Thomas Castle ◽  
Sean P. Mullen
Keyword(s):  
North American ◽  
Male Aggression ◽  
Sexual Signal ◽  
Signal Divergence

The influence of geographic heterogeneity in predation pressure on sexual signal divergence in an Amazonian frog species complex

2012 ◽  
Vol 26 (1) ◽  
pp. 216-222 ◽  
Author(s):  
P. A. Trillo ◽  
K. A. Athanas ◽  
D. H. Goldhill ◽  
K. L. Hoke ◽  
W. C. Funk
Keyword(s):  
Species Complex ◽  
Predation Pressure ◽  
Sexual Signal ◽  
Frog Species ◽  
Signal Divergence

scholarly journals The dark-ventral-patch of male red deer, a sexual signal that conveys the degree of involvement in rutting behavior

BMC Zoology ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Eva de la Peña ◽  
Javier Pérez-González ◽  
José Martín ◽  
Giovanni Vedel ◽  
Juan Carranza
Keyword(s):  
Sexual Behaviors ◽  
Red Deer ◽  
Decisive Role ◽  
Female Mate Choice ◽  
Doñana National Park ◽  
Sexual Signal ◽  
Mating Competition ◽  
Dark Patch ◽  
Rutting Behavior

Abstract Background In polygynous mammals, signalling may play a decisive role in mating behavior, mediating the intensity of male fights and female mate choice. During the rutting season, male red deer may show a visible dark patch in their ventral fur. Recently, this patch has been suggested to act as a flexible sexual signal, due to its relationships with other variables such as age, body size, antler development, volatile compounds, or the competitive environment. The analysis of fur pigmentation at the ventral patch suggests that this might also visually indicate the male intrinsic predisposition to take part in mating competition. Results To assess the possible role of this trait as a communicative signal related to mate competition, we used red deer behavioral observations during the rut in Doñana National Park (Spain) to examine the link between the degree of expression of the dark ventral patch and the rutting activity (assessed from both intra-and-inter-sexual behaviors). Consistent with our predictions, we found in a field study that males with large dark patches showed a higher frequency of rutting behaviors (mainly roaring and flehmen), more interactions with females, and attained larger harem sizes. Conclusions The dark ventral patch was a better predictor of male behavior than antler tines or territory holding, thus standing as a short-term indicator of male willingness to invest in mating competition.

scholarly journals Simulations with Australian dragon lizards suggest movement-based signal effectiveness is dependent on display structure and environmental conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xue Bian ◽  
Angela Pinilla ◽  
Tom Chandler ◽  
Richard Peters
Keyword(s):  
Research Methods ◽  
Environmental Conditions ◽  
Comparative Studies ◽  
Habitat Structure ◽  
Signal Transmission ◽  
Lizard Species ◽  
Local Adaptations ◽  
Signal Divergence ◽  
Colour Signals ◽  
Optimal Signal

AbstractHabitat-specific characteristics can affect signal transmission such that different habitats dictate the optimal signal. One way to examine how the environment influences signals is by comparing changes in signal effectiveness in different habitats. Examinations of signal effectiveness between different habitats has helped to explain signal divergence/convergence between populations and species using acoustic and colour signals. Although previous research has provided evidence for local adaptations and signal divergence in many species of lizards, comparative studies in movement-based signals are rare due to technical difficulties in quantifying movements in nature and ethical restrictions in translocating animals between habitats. We demonstrate herein that these issues can be addressed using 3D animations, and compared the relative performance of the displays of four Australian lizard species in the habitats of each species under varying environmental conditions. Our simulations show that habitats differentially affect signal performance, and an interaction between display and habitat structure. Interestingly, our results are consistent with the hypothesis that the signal adapted to the noisier environment does not show an advantage in signal effectiveness, but the noisy habitat was detrimental to the performance of all displays. Our study is one of the first studies for movement-based signals that directly compares signal performance in multiple habitats, and our approach has laid the foundation for future investigations in motion ecology that have been intractable to conventional research methods.

The Rise and Evolution of Clouds and Private Networks – Internet Interconnection, Ecosystem Fragmentation

2021 ◽  
Author(s):  
Volker Stocker ◽  
Guenter Knieps ◽  
Christoph Dietzel
Keyword(s):  
Ecosystem Fragmentation

Strong, silent types: the rapid, adaptive disappearance of a sexual signal

2007 ◽  
Vol 22 (5) ◽  
pp. 226-228 ◽  
Author(s):  
Amanda Bretman ◽  
Tom Tregenza
Keyword(s):  
Sexual Signal

Signal Divergence is Correlated with Genetic Distance and not Environmental Differences in Darters (Percidae: Etheostoma)

2012 ◽  
Vol 39 (2) ◽  
pp. 231-241 ◽  
Author(s):  
Michael David Martin ◽  
Tamra C. Mendelson
Keyword(s):  
Genetic Distance ◽  
Signal Divergence

scholarly journals Sympatry drives colour and song evolution in wood-warblers (Parulidae)

2021 ◽  
Vol 288 (1942) ◽  
pp. 20202804
Author(s):  
Richard K. Simpson ◽  
David R. Wilson ◽  
Allison F. Mistakidis ◽  
Daniel J. Mennill ◽  
Stéphanie M. Doucet
Keyword(s):  
Related Species ◽  
Species Recognition ◽  
Sympatric Species ◽  
Signal Evolution ◽  
Wood Warblers ◽  
Mixed Support ◽  
Species Pairs ◽  
Song Divergence ◽  
Signal Diversity ◽  
Signal Divergence

Closely related species often exhibit similarities in appearance and behaviour, yet when related species exist in sympatry, signals may diverge to enhance species recognition. Prior comparative studies provided mixed support for this hypothesis, but the relationship between sympatry and signal divergence is likely nonlinear. Constraints on signal diversity may limit signal divergence, especially when large numbers of species are sympatric. We tested the effect of sympatric overlap on plumage colour and song divergence in wood-warblers (Parulidae), a speciose group with diverse visual and vocal signals. We also tested how number of sympatric species influences signal divergence. Allopatric species pairs had overall greater plumage and song divergence compared to sympatric species pairs. However, among sympatric species pairs, plumage divergence positively related to the degree of sympatric overlap in males and females, while male song bandwidth and syllable rate divergence negatively related to sympatric overlap. In addition, as the number of species in sympatry increased, average signal divergence among sympatric species decreased, which is likely due to constraints on warbler perceptual space and signal diversity. Our findings reveal that sympatry influences signal evolution in warblers, though not always as predicted, and that number of sympatric species can limit sympatry's influence on signal evolution.

Sexual signal loss, pleiotropy, and maintenance of a male reproductive polymorphism in crickets

Evolution ◽  
2020 ◽  
Vol 74 (5) ◽  
pp. 1002-1009
Author(s):  
Justa L. Heinen‐Kay ◽  
Rachel E. Nichols ◽  
Marlene Zuk
Keyword(s):  
Signal Loss ◽  
Sexual Signal
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