Search results for "colour"

An aposematic colour‐polymorphic moth seen through the eyes of conspecifics and predators – Sensitivity and colour discrimination in a tiger moth

2018

Although predation is commonly thought to exert the strongest selective pressure on coloration in aposematic species, sexual selection may also influence coloration. Specifically, polymorphism in aposematic species cannot be explained by natural selection alone. Males of the aposematic wood tiger moth (Arctia plantaginis) are polymorphic for hindwing coloration throughout most of their range. In Scandinavia, they display either white or yellow hindwings. Female hindwing coloration varies continuously from bright orange to red. Redder females and yellow males suffer least from bird predation. White males often have higher mating success than yellow males. Therefore, we ask whether females ca…

The complete mitochondrial genome of the wood tiger moth (Arctia plantaginis) and phylogenetic analyses within Arctiinae

2021

We report the assembly and annotation of the complete mitochondrial genome of the warningly-coloured wood tiger moth (Arctia plantaginis) and investigate its phylogenetic position within Arctiinae. The A.plantaginis mitogenome is 15,479 bp long with 13 protein-coding genes, 22 transfer RNAs, 2 ribosomal RNA genes, and an A + T-rich region (D-loop). The phylogenetic analyses based on 13 protein-coding genes showed A.plantaginis clustering within a clade of species with white wings and yellow or red bodies. This result can be useful in understanding the evolution of coloration in Arctiid moths. Peer reviewed

Multimodal Aposematic Signals and Their Emerging Role in Mate Attraction

2018

Verbālo un neverbālo līdzekļu lietojums sociālajā saziņā

2017

Komunkācija ir informācijas nodošana, izmantojot dažādus lingvistiskos un nelingvistiksos līdzekļus. Komunikācijai var būt dažādas formas, tā var būt saruna starp mīlētājiem, formāla vēstule vai pat reklāmas kampaņa. Reklāma satur daudz informācijas, un katras reklāmas galvenais mērķis ir nodot šo informāciju auditorijai. Tiek izmantoti dažādi līdzekļi, kas palīdz nogādāt informāciju adresātam. Līdzekļi, kuri nogādā informāciju auditorijai, var tik iedalīti divās grupās: verbālie un neverbālie līdzekļi. Verbālie komunikācijas līdzekļi ietver valodu, kura tiek izmantota vēstījumā, kamēr neverbālie līdzekļi ir bezvārdu līdzekļi, kuri tiek izmantoti, lai sasniegtu auditoriju. Šī pētījuma mērķi…

Relative importance of different coloration, smell and shape in the predation of wasps : field experiments on hunting dragonflies (Odonata: Aeshna gr…

2002

Behavioural, ecological, and evolutionary aspects of diversity in frog colour patterns

2017

The role of colours and colour patterns in behavioural ecology has been extensively studied in a variety of contexts and taxa, while almost overlooked in many others. For decades anurans have been the focus of research on acoustic signalling due to the prominence of vocalisations in their communication. Much less attention has been paid to the enormous diversity of colours, colour patterns, and other types of putative visual signals exhibited by frogs. With the exception of some anecdotal observations and studies, the link between colour patterns and the behavioural and evolutionary ecology of anurans had not been addressed until approximately two decades ago. Since then, there has been eve…

Weiss in der Kunst des 20. Jahrhunderts

2008

This study is dedicated to one color exclusively: the color white. Thus, it provides an important contribution to the history of colors as well as to the meaning and the monochromatic use of white as a means of design in 20th century visual arts. Research is based on the assumption that in order to examine one single color it is not enough to exclusively apply methods thaf are restricted to problems that are intrinsic to the fine arts only. This study is therefore divided into two main sections, which in their methodological approach differ from each other as a matter of principle: the analysis on the phenomenon and the meaning of white as regards its content based relevance is followed by …

Seeing red? Colour biases of foraging birds are context dependent.

2020

Funder: Suomen Kulttuurirahasto; doi: http://dx.doi.org/10.13039/501100003125

Multimodal Aposematic Signals and Their Emerging Role in Mate Attraction

2018

Chemically defended animals often display conspicuous color patterns that predators learn to associate with their unprofitability and subsequently avoid. Such animals (i.e., aposematic), deter predators by stimulating their visual and chemical sensory channels. Hence, aposematism is considered to be “multimodal.” The evolution of warning signals (and to a lesser degree their accompanying chemical defenses) is fundamentally linked to natural selection by predators. Lately, however, increasing evidence also points to a role of sexual selection shaping warning signal evolution. One of the species in which this has been shown is the wood tiger moth, Arctia plantaginis, which we here put forward…

Krāsu izmantojums starpkultūru lietišķā saziņā

2022

Bakalaura darbs veic teorētisko un empīrisko izpēti par krāsu izmantošanu biznesā - starpkultūru komunikācijā. Pētījuma mērķis ir analizēt krāsu lietojuma atšķirības un līdzības uzņēmumos kulturāli un ģeogrāfiski tuvās un attālās valstīs. Pētījumā izmantots literatūras apskats un reklāmu salīdzinošā analīze. Analīzes korpusu veido četrdesmit astoņas kosmētikas un ādas kopšanas uzņēmuma mājas lapas, kas atlasītas no septiņpadsmit dažādām pasaules valstīm. Rezultāti liecina, ka krāsu izvēle ir atkarīga no ģeogrāfiskās atrašanās vietas, kultūras fona, personīgajām vēlmēm un uzņēmuma vispārīgajām īpašībām. Noslēgumā jāsaka, ka nav konstatēta priekšroka konkrētas krāsas izmantošanai noteiktā apg…