scholarly journals The Role of Wing Coloration in Sex Recognition and Competitor Recognition in Rubyspot Damselflies (Hetaerinaspp.)

Ethology ◽  
2015 ◽  
Vol 121 (7) ◽  
pp. 674-685 ◽  
Author(s):  
Gregory F. Grether ◽  
Jonathan P. Drury ◽  
Erin Berlin ◽  
Christopher N. Anderson
Keyword(s):  
Sex Recognition ◽  
Competitor Recognition ◽  
Wing Coloration

Sex recognition and the role of urinary cues in the lobster,Homarus americanus

1993 ◽  
Vol 24 (2) ◽  
pp. 101-116 ◽  
Author(s):  
Mark J. Snyder ◽  
Christopher Ameyaw‐Akumfi ◽  
Ernest S. Chang
Keyword(s):  
Homarus Americanus ◽  
Sex Recognition

scholarly journals Asymmetric interspecific competition drives shifts in signalling traits in fan-throated lizards

2020 ◽  
Vol 287 (1940) ◽  
pp. 20202141
Author(s):  
Amod M. Zambre ◽  
Akshay Khandekar ◽  
Rajesh Sanap ◽  
Clairissa O'Brien ◽  
Emilie C. Snell-Rood ◽  
...  
Keyword(s):  
Interspecific Competition ◽  
Species Recognition ◽  
Character Displacement ◽  
Social Signals ◽  
Lizard Species ◽  
Male Aggression ◽  
Species Overlap ◽  
Asymmetric Pattern ◽  
Competitor Recognition

Interspecific competition can occur when species are unable to distinguish between conspecific and heterospecific mates or competitors when they occur in sympatry. Selection in response to interspecific competition can lead to shifts in signalling traits—a process called agonistic character displacement. In two fan-throated lizard species— Sitana laticeps and Sarada darwini —females are morphologically indistinguishable and male agonistic signalling behaviour is similar. Consequently, in areas where these species overlap, males engage in interspecific aggressive interactions. To test whether interspecific male aggression between Si. laticeps and Sa. darwini results in agonistic character displacement, we quantified species recognition and signalling behaviour using staged encounter assays with both conspecifics and heterospecifics across sympatric and allopatric populations of both species. We found an asymmetric pattern, wherein males of Si. laticeps but not Sa. darwini showed differences in competitor recognition and agonistic signalling traits (morphology and behaviour) in sympatry compared with allopatry. This asymmetric shift in traits is probably due to differences in competitive abilities between species and can minimize competitive interactions in zones of sympatry. Overall, our results support agonistic character displacement, and highlight the role of asymmetric interspecific competition in driving shifts in social signals.

scholarly journals The well-tuned blues: the role of structural colours as optical signals in the species recognition of a local butterfly fauna (Lepidoptera: Lycaenidae: Polyommatinae)

2012 ◽  
Vol 9 (73) ◽  
pp. 1745-1756 ◽  
Author(s):  
Zsolt Bálint ◽  
Krisztián Kertész ◽  
Gábor Piszter ◽  
Zofia Vértesy ◽  
László P. Biró
Keyword(s):  
Spectral Data ◽  
Species Recognition ◽  
Structural Data ◽  
Flight Period ◽  
Butterfly Species ◽  
Optical Signals ◽  
Butterfly Fauna ◽  
Data Points ◽  
Competitor Recognition

The photonic nanoarchitectures responsible for the blue colour of the males of nine polyommatine butterfly species living in the same site were investigated structurally by electron microscopy and spectrally by reflectance spectroscopy. Optical characterization was carried out on 110 exemplars. The structural data extracted by dedicated software and the spectral data extracted by standard software were inputted into an artificial neural network software to test the specificity of the structural and optical characteristics. It was found that both the structural and the spectral data allow species identification with an accuracy better than 90 per cent. The reflectance data were further analysed using a colour representation diagram built in a manner analogous to that of the human Commission Internationale de l'Eclairage diagram, but the additional blue visual pigment of lycaenid butterflies was taken into account. It was found that this butterfly-specific colour representation diagram yielded a much clearer distinction of the position of the investigated species compared with previous calculations using the human colour space. The specific colours of the investigated species were correlated with the 285 flight-period data points extracted from museum collections. The species with somewhat similar colours fly in distinct periods of the year such that the blue colours are well tuned for safe mate/competitor recognition. This allows for the creation of an effective pre-zygotic isolation mechanism for closely related synchronic and syntopic species.

Sex recognition inDiglyphus isaea walker (Hymenoptera: Eulophidae): Role of an uncommon family of behaviorally active compounds

1996 ◽  
Vol 22 (11) ◽  
pp. 2063-2079 ◽  
Author(s):  
Valérie Finidori-Logli ◽  
Anne-Geneviève Bagnères ◽  
Dirk Erdmann ◽  
Wittko Francke ◽  
Jean-Luc Clément
Keyword(s):  
Sex Recognition ◽  
Active Compounds

Dual role of preputial gland secretion and its major components in sex recognition of mice

2008 ◽  
Vol 95 (3) ◽  
pp. 388-394 ◽  
Author(s):  
Jian-Xu Zhang ◽  
Ying-Juan Liu ◽  
Jin-Hua Zhang ◽  
Lixing Sun
Keyword(s):  
Dual Role ◽  
Gland Secretion ◽  
Preputial Gland ◽  
Sex Recognition

Color Variation and Significance of Color in Reproduction in the Damselfly, Argia apicalis (Say) (Zygoptera: Coenagriidae)

1965 ◽  
Vol 97 (1) ◽  
pp. 32-41 ◽  
Author(s):  
George H. Bick ◽  
Juanda C. Bick
Keyword(s):  
Sexual Maturity ◽  
Sex Discrimination ◽  
Single Step ◽  
Color Variation ◽  
Normal Female ◽  
Sex Recognition ◽  
Directional Change ◽  
Males And Females ◽  
Bright Blue

AbstractVariation in thoracic color and the role of color in reproduction were studied in the field in one population of the damselfly, Argia apicalis. Mature males and females were individually marked, and observed near noon on 47 consecutive days, and hourly on three. Males occurred in two color phases: bright blue, and gray-black, neither of which could be positively associated with age or mating. Change was not a single step from blue to finally dark or vice versa but often involved intervening changes in both directions with a maximum of eight in 12 days. Dark was the more temporary condition. Females occurred in three color phases: brown, turquoise, gray-black. As with males, no one phase could be positively associated with age or mating, and multi-directional change occurred after sexual maturity.Dead pinned individuals, modified or not, were presented to living males who: (1) advanced sexually toward motionless models, (2) discriminated intact females from males, (3) reacted sexually more frequently to brown than to the other normal female colors, (4) responded sexually to a female thorax and one wing almost as frequently as to a normal female, (5) accurately discriminated a female thorax and one wing from that of a male. The blue-tipped male abdomen aided but was not indispensable for sex recognition. Dorsal and lateral thoracic color were equally important and elicited male sexual response in their entirety rather than by particular pattern. Sex discrimination broke down when the normal thoracic color was obliterated with paint regardless of its color, but a thorax painted white was an "over-optimal" attraction suggesting the importance of light intensity.

scholarly journals Role of visual and olfactory cues in sex recognition in butterfly Cethosia cyane cyane

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Chengzhe Li ◽  
Hua Wang ◽  
Xiaoming Chen ◽  
Jun Yao ◽  
Lei Shi ◽  
...  
Keyword(s):  
Olfactory Cues ◽  
Sex Recognition

Sex Recognition by Males of the Lizard Lacerta vivipara: An Introductory Study

1987 ◽  
Vol 8 (1) ◽  
pp. 49-57 ◽  
Author(s):  
Henk van Wezel ◽  
Kees Nuijten ◽  
Rudolf F. Verheyen ◽  
Dirk Bauwens
Keyword(s):  
Sex Identification ◽  
Behavioural Response ◽  
Colour Pattern ◽  
Adult Males ◽  
Sex Recognition ◽  
Adult Females ◽  
Secondary Factor ◽  
Lacerta Vivipara

AbstractThe role of colour pattern and odiferous cues in sex identification by adult males of the lizard Lacerta vivipara was examined by observing their behavioural response towards several types of introduced conspecific adults. Reproductive males courted both receptive and non-receptive adult females. In addition, they courted introduced males that were painted to mimic the females' colour pattern, indicating that pigmentation functions in sex recognition. Responses of males to females painted as males, untreated females, and uniformly black painted females were identical. This demonstrates that males do not rely exclusively on colour pattern for sex recognition. Odour does not seem to be important as a secondary factor in stimulating courtship. The possible contribution of other stimuli to sex identification is discussed.

scholarly journals Handicap theory is applied to females but not males in relation to mate choice in the stalk-eyed fly Sphyracephala detrahens

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Koji Takeda ◽  
Tomoki Furuta ◽  
Masaki Hamada ◽  
Yo Sato ◽  
Kiichiro Taniguchi ◽  
...  
Keyword(s):  
Sexual Dimorphism ◽  
Mate Choice ◽  
Sexual Difference ◽  
Sex Recognition ◽  
Honest Signals ◽  
Reproductive Ability ◽  
Primitive Species ◽  
Sexual Traits ◽  
Primitive State

AbstractHandicap theory explains that exaggeratedly developed sexual traits become handicaps but serve as honest signals of quality. Because very weak signals are less likely to provide benefits than to simply incur costs, it is interesting to elucidate how sexual traits are generated and developed during evolution. Many stalk-eyed fly species belonging to tribe Diopsini exhibit marked sexual dimorphism in their eye spans, and males with larger eye spans have larger bodies and reproductive capacities, which are more advantageous in terms of contests between males and acceptance for mating by females. In this study, we investigated the role of eye span in a more primitive species, Sphyracephala detrahens, in tribe Sphyracephalini with less pronounced sexual dimorphism. Male-male, female-female, and male–female pairs showed similar contests influenced by eye span, which was correlated with nutrition and reproductive ability in both sexes. During mating, males did not distinguish between sexes and chose individuals with larger eye spans, whereas females did not choose males. However, males with larger eye spans copulated repeatedly. These results indicate that, in this species, eye span with a small sexual difference does not function in sex recognition but affects contest and reproductive outcomes, suggesting the primitive state of sexual dimorphism.

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