This is a self-archived version of an original article. This version may differ from the original in pagination and typographic details.

Author(s): Henze, Miriam J.; Lind, Olle; Mappes, Johanna; Rojas Zuluaga, Bibiana; Kelber, Almut

Title: An aposematic colour-polymorphic seen through the of conspecifics and predators : sensitivity and colour discrimination in a tiger moth

Year: 2018

Version: Accepted version (Final draft)

Copyright: © 2018 The Authors. Functional Ecology © 2018 British Ecological Society

Rights: In Copyright

Rights url: http://rightsstatements.org/page/InC/1.0/?language=en

Please cite the original version: Henze, M. J., Lind, O., Mappes, J., Rojas Zuluaga, B., & Kelber, A. (2018). An aposematic colour- polymorphic moth seen through the eyes of conspecifics and predators : sensitivity and colour discrimination in a tiger moth. Functional Ecology, 32(7), 1797-1809. https://doi.org/10.1111/1365-2435.13100 This article isThis article by protected copyright. All rightsreserved. 10.1111/1365doi: differences to lead between the of thisversion citethisarticle and asVersion Record.Please copyediting, been throughthe typesetti This article acceptedhas been for publication andundergone fullpeer review buthasnot ID: author,Orcid *corresponding Finland 4 Sweden. University, Science,Lund Cognitive ofPhilosophy, 3 Department Australia, QLD 4072, Lucia, St ofQueensland, Institute, University Queensland 2 present address: 1 Miriam J.Henze predator and colour An aposematic Editor: Dr Section: Animal Morphology Colouration and Corresponding author mail id: Article type :

Lund Vision Group, Department of Biology, Lund University, University, Lund of Biology, Group, Department Vision Lund Accepted Interactions, Biological in Centre ofExcellence Article

Christine Miller Research Article Research s

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1 sensitivity and colour discrimination in in discrimination colour sensitivity and - ,2 2435.13100 , OlleLind - polymorphic moth moth polymorphic Functional Ecology

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, JohannaMappes [email protected]

- 0003 ng, pagination andproofreading process,may which - 3937 University of Jyväskylä, of Jyväskylä, University

- 2 808 seen

4 , Bibiana Rojas , Bibiana through

Sölvegatan 35, 22362 35,22362 Sölvegatan

Helgonavägen 3, 3, Helgonavägen a tigermoth

the eyes of the

PO Box 35, FI 40001, 40001, FI Box 35, PO 4 , AlmutKelber 22362 Lund, conspecific

Lund, Sweden Lund, 1 *

s

This article isThis article by protected copyright. All rightsreserved. Accepted ArticleAbstract headline: Rolling 7. 6. 5. 4. 3. 2. 1.

Males of the aposematic wood tiger moth ( tigermoth wood aposematic ofthe Males alone. selection bynatural be cannot explained species inaposematic polymorphism sexual species, aposematic colouration in i Although predation predators andtheir species of the system of The further testing. white for preference not the or Whether white males. forces of theopposing is polymorphism colour whereas male conspecifics, T reflectivity w separate colo to According blue A. plantaginis w electroretinograms, Using colouration the question following females W males andyellow Redder females hindwings. mostoftheir range throughout colouration he he hite males are more conspicuous against green against conspicuous more are hite males hite males often have high have often hite males

costly (457 nm)

can morphs, but not orange and red females. andred females. orange butnot morphs, pheromone , and r , and

red colo red Colour discrimination in in discrimination Colour F

is also is discriminate the two male morphs two male the discriminate s , emale hindwing colo hindwing emale

but similar spectral sensitivities but similarspectral whether , andgreen

ed females are slightly more conspicuous than orange females orange than conspicuous are slightly more ed females

polymorphic aposematic aposematic polymorphic u

sexually selected. sexually u r vision models, conspecifics can discriminate discriminate can models, conspecifics r vision ration among females is likely selected bypredator is females among ration s commonly thought thought s commonly

plume males predation pressure favouring yellow males yellow favouring pressure predation

(521 nm) (521 e found

s from a distance s from er mating success than yellow males. Therefore males. than yellow er mating success discriminate u suffer least ration varies continuously from from varies continuously ration wavelength range wavelength

a tiger moth a tiger significan

is taken into consideration is taken into selection may also mayselection female female to exert animals can be better understood when be understood better can animals Arctia plantaginis Arctia . InScandinavia

from bird predatbird from in both sexes in both , tly

but search visually at at visually but search by colour by

andbrown larger whether female turn, and,in colouration

the strongest selective pressure pressure the strongestselective For moth For probably . males is based on visual cues requires requires cues onvisual males based is

retinal response retinal . M

, ) are polymorphic for hindwing hindwing for polymorphic ) are

,

with peaks inthe peaks with ales backgrounds, mostly due toUV mostly due backgrounds, influence colo influence they display s

maintained ion and bird and approach females by by females approach . , white andyellow white

and female female and bright orange . short range short

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This article isThis article by protected copyright. All rightsreserved. Accepted Article Resumen 6. 5. 4. 3. 2. 1.

continua entre naranja y rojo. Machos amarillos y hembras rojas sufren menor depredación menordepredación rojassufren yhembras amarillos Machos y rojo. naranja entre continua variación presentanuna hembras alastraseras;las sus amarilla) en o (blanca polimórfica aposemática lapolilla de losmachos En Escandinavia, úni explicados ser nopueden aposemáticas especies de enlacoloración polimorfismos Los presión importante. puede ejercer una también sexual aunque selección aposemática, coloración la evolución de en la selección presión de eslaprincipal La depredación cuenta lossistemas enteniendo mejor puedeentenderse aposemáticas especies en de polimorfismos La evolución desconoce. aún se en preferencia color dicha papel del El lashembras. de parte por blancos por machos favoreci depredación la presión de balance entre un mediante mantenerse parece losmachos de polimórfica lacoloración de selección sexual; no depredación, de unafuertepresión bajo estáhembras probablemente de las rojo El color anaranjadas. que más conspicuas unpoco rojasson las hembras Asimismo, UV. reflexión de caeruleus entr perono yamarillos, blancos entre machos pueden discriminar ambossexos de individuos que (3)(521 nm); nm), yverde nm),azul (457 (349 UV enlasregiones sexos, con picos en laretina (1)mayorrespuesta encontramos: color, visión a ymodelosde Usando electrorretinogramas selecciónpor sexual. afectada estar podría hembras delas lacoloración y (2)si hembras; tipos entre losdos discriminar pueden hembras si las (1) preguntamos ello,nos Por localizarlas. para visuales pistas utilizan también distancias acortas feromonas, sus siguiendo hembras alas aproximan ambos se éx tener unmayor suelen blancos Los machos aves. por camente por selección natural. selección por camente

e hembras rojas y anaranjadas; y (4) que para las polillas, así como para un ave( para un como así laspolillas, para (4) yque rojasyanaranjadas; e hembras ), los machos blancos son más conspicuos sobre sustratos verdes y cafés por su por y cafés verdes sustratos sobre conspicuos sonmás blancos machos ), los

de los machos que de las hembras; (2) sensibilidad espectral similar en ambos similaren espectral sensibilidad lashembras;(2) de losmachos que de

visuales tanto de la especie en cuestión como de sus depredadores. desus cuestión encomo especie tanto la de visuales

de machos, y los machos entre los diferentes colores de las colores entrelosdiferentes ylosmachos de machos,

ito reproductivo que los amarillos; aunque aunque amarillos; quelos ito reproductivo endo a machos amarillos, y una preferencia preferencia yuna machosamarillos, a endo Arctia plantaginis

tienen una coloración coloración tienen una las hembras las Cyanistes Cyanistes

This article isThis article by protected copyright. All rightsreserved. 2 the doe sun Helsinki (60°), at of the areshort;latitude Europe andnorthern central 2015; al. et Gordon thefield, observations from between 18 is highest whereasmales hours, evening diurnal Theyare of theirrange. the aposematic, moth tiger The wood e systems, the perceptual receivers’ in orlimitations biases receiver exploit might morphs different ( favours another one may favour selection asnatural 2013), &Endler Rojas one ofthe in polymorphism colour Cummings ( of colourvariation maintenance a selection sexual pointed at morph polym population withinagiven colouration withvariable species aposematic in However, 1887 (Poulton organisms aposematic in colouration conspicuous Predation Introduction sensitivity spectral sexual selection, Key words: specially while searchin while specially 2

Acceptedh, Article Holarctic

and orphism) orphism) s

(Mallet &Joron

nocturnal light levels are n levels light nocturnal i

s

2013). This could be particularly relevant for species displaying species displaying relevantfor be particularly could This2013). Arctiid , colour polymorphism, colour vision, natural selection, predator pressure, pressure, predator selection, natural vision, colour polymorphism, moths,colour Arctiid colour commonly commonly .

Adults of Adults this principle is challenged by the difficulty bythe difficulty ischallenged principle this Nokelainen et al. 2012; Crothers &Cummi Crothers 2012; etal. Nokelainen - polymorphic h Arctia plantaginis Arctia

and 2 and advocated as the strongest selective pressure pressure strongest selective as the advocated

g for mates (Limeri & Morehouse (Limeri mates g for A. plantaginis 1999; Lindström 1999; s an alternative oradditional s analternative 2 h already already - , crepuscular, meaning that f that meaning crepuscular,

, and

O and sexually dimorphic arctiid moth moth arctiid dimorphic sexually and 'Donald & Majerus 1984; Jiggins etal. Jiggins 1984; &Majerus 'Donald

ever sexes, or both (Maan &C orboth sexes,

female calling calling female are active are

start flying during daytime start flyingduring (formerly (formerly

reached. reached.

et al.

2001; Endler & Mappes 2004). 2004). &Mappes Endler 2001; and mate and Parasemia Parasemia Rojas et al. 2015). al.2015). Rojas et

and mating mating and

selective pressure influencing the influencing selectivepressure from

plantaginis 2014). 2014). colour morph colour emales emales for predators to learn several colo tolearn predators for ngs ummings mid activity activity

2013 ;

(Conner 2009)

Ruxton release pheromone release At this time of the year, nights in year,in nights of the timeAt this - ; June

Rönkä on ). Moreover, each of theeach of ). Moreover, with a wide distribution awide with peak

2009; Nokelainen 2009; the evolution of of the evolution

until the end of July in most most ofJulyin the end until

, Sheratt while sexual selection selection sexual while 2001; 2001; sexual dichromatism, sexual dichromatism,

et al. at 20 Previous . Crothers & Crothers

Male h 2016

& Speed& ( s not set before notbefore set s own own (colour

towards thetowards ) isan flight activity activity flight

studies have studies

et al. et

2004). 2004). u

r across across 2012; 2012; This article isThis article by protected copyright. All rightsreserved. anddiscriminate backgrounds, model vision a color of theretina spectral thesensitivity determined (ERGs). We we study, In thepresent perceive role in Altogether al. 2015). et attracted (Gordon and to approach, about whichfemale(s) at range short males approaching pheromones, byafar from attractmales While females on choice stress males experience yellow successthan higher mating (e.g. communication intraspecific signal receivers andpredator of colouration Although the signal 2016) Rojas 2012; etal. (Nokelainen males adult Both obse personal Rojas, B. al.2015; Hegnaet 2011; al. et (Lindstedt are red allfemales where andGeorgia, areyellow, whereall females Scotland, except for populations, within red orange to 25:75 2015). Mappes E partsof butinlarge are monomorphic, males populations, In some hindwings. yellow, orwhite black aconspicuous have moths woodtiger Adult

Accepted Article co hindwings yellow or either white morphs with male colour two urope

( are unpalatable to bird predators, which tobird are unpalatable (Lindstedt et al (Lindstedt Nokelainen 2013 mate their own wing colo own wing their

colour colour

detection i n

In Finnish populations, f populations, In Finnish (e the vegetation or .g. Nokelainen et al. .g. Nokelainen on on to estima to . 2011; Nokelainen et Nokelainen . 2011;

and choice and . other properties other ) However . investigated the eyes of theeyes investigated

The hindwing colour of females, however, ranges continuously from from continuously ranges however, females, of colour The hindwing - prey interactions (i.e. natural selection) natural (i.e. prey interactions A. plantaginis u te how well the moths can detect conspecifics against natural against detectconspecifics can the well how moths te rs.

between (B. Rojas & J. Mappes, personal observation) personal &J.Mappes, Rojas (B.

. , these experiments d experiments , these sexual selection). E sexual Addressing this question requires that we know how tiger moths tigerhow moths know that we requires thisquestion Addressing mal

2012, 2014) 2012, es (No es

their colour morphs. morphs. their colour requencies of yellow and white morphs vary from 60:40 to to from60:40 vary whitemorphs and ofyellow requencies female related tothecolo related

, has mostly been studied within the context of the within context been studied has mostly

this raises the question this the raises al. 2012 kelainen et al.2012 et kelainen learn s

et al. may or may not mate with a malewith a not mate may or may A. plantaginis A. , wing colouration may colouration , wing - and ;

Nokelainen et al. et Nokelainen the moths’ hindwin the

xperiments xperiments 2017 - id notid reveal white pattern on the forewings andred, on thewhite pattern forewings ) and females (Lindstedt ) andfemales u r morph ,

measured measured

W using histology electroretinograms electroretinograms histology using e ;

suggest suggest G also

, whether

considering birds considering

ordon whether female .

2014 assess the g colouration as g colouration that white males have a a have males that white also also

et al. et - visually

; Rönkä etal.2018 ; Rönkä occur (Hegna, Galar (Hegna, occur wing colo wing wing ed . M have a function in afunction in have

how how 2015) ales might be choosy mightbechoosy ales reflectance

search for females search forfemales

they have et al. s base well a

u , particular as the main as the main ration plays a ration plays

a 2010 d rvation). rvation). warning warning natural natural

their

and

). ;

Brain Brain za ly

used used

if &

This article isThis article by protected copyright. All rightsreserved. microscope. with hot plate, stained ona dried a slide, onplaced 3 rinsing h. Afterrepeated glutaraldehyde 2% Three the investigation. tosubjected experiments After paper towels. with until cleaned daily sp. approximately avoided systematically being andsisters between brothers crosses season and thefield every during year has been We investigated Animals Methods andmaintain moth the bluetit predator,

 Accepted) Article m thickness were m thickness leaves leaves 9th histology .

male and and male Our results allow predictions on the opposing selective forces that act on the colo act on that forces selective the opposing on allowpredictions results Our , and thosefor , and .

The frequency of The kept at the University of Jyväskylä, Finland ofJyväskylä, kept attheUniversity

ad libitum ad libitum

Rhabdom l Rhabdom colour M 50:50.

oths used for oths for used three animals animals , the

2% formaldehyde 2% (for more details more (for

polymorphism within population within polymorphism

Cyanistes caeruleus taken

Larvae were raised under greenhouse conditions greenhouse under wereLarvae raised

female female reflectance measurements measurements reflectance larvae pupated larvae engt from the moths

in buffer, thebuffer, in th

Fin with a Reichert Ultracut microtome using glass knives. The sections were The sections glass knives. using microtome Ultracut Reichert with a e hs were measured hs weremeasured

A. plantaginis same day

electrophysiology a nish populations. Frequencies of yellow and white morphs andwhite yellow of Frequencies populations. nish stock of stock

had eclosed, straightened their wings and hardened, they were andhardened, wings their straightened eclosed, had . see

, can detect can , and Pupae were kept at 24 °C in transparent plastic boxes lined lined plastic boxes transparent °C at24 in kept were Pupae

head or wood tiger moth woodtiger Lindstedt et al. et Lindstedt

transferred to a dark chamber and stored at andstored chamber a dark to transferred 2% sucrosein 2% were s wereembedd from micrographs using Image J150 (NIH, Bethesda, (NIH, Bethesda, J150 Image using from micrographs

decapitated, and their heads andtheir decapitated, originated originated from from

the different colour m colour the different toluidine blue toluidine , since 2013 , since s the .

20 0.15 M sodium cacodylate buffer cacodylate sodium M 0.15 s 11

ed in epoxy resin. ed inepoxy from the2nd 10 from south th ).

R generation , with wild individuals being added being added individuals wild , with

earing containers werecontainers earing ,

and photographed under a light under alight photographed and

ern and central Finland Finland central and ern and orphs of the orphs of ,

moths

of the laboratory stock thelaboratory of fed dandelion ( fed dandelion dissected andfixated dissected Vertical Vertical for anatomy anatomy for

woodtiger sections of sections 8°C checked and checked u is kept tois kept r morphs morphs r Taraxacum Taraxacum

for later for later for 1 for from from that 2 – .

in in

24 This article isThis article by protected copyright. All rightsreserved. USA). Natick, MA, ERG analyses ERG repeatedly recording experiments. started, M Supplementary fibre peripheral the through co protocol with thewe repeated recording tothe ERG, receptors of shortwavelength contribution theTo isolate recorde animals most for data sets 10ormore with individual, foreach 3 to20times were investigated withincreasingintensity of white light flashes response a voltage wedetermined series, spectral each following as desc flux equal photon S (see times up tofour was measured sensitivity thespectral for30minutes, adaptation dark separat duration of40ms to flashes responses maximize to was adjusted anddistance position whoseangular ofalightguide, thecentral fibre via was illuminated The eye tungsten recording in alight placed For electrophysiology, (ERG Electroretinogram membrane basement USA) Maryland, Accepted Article upplementary s

were analysed bycustom analysed were d at different times of the day at times d different and operated to produce increasing increasing produce operated to

In between sets of experiments and in the end inthe and ofexperiments betweensets In

M - , following the course of the rhabdom from the base of the crystalline cone to the the to of thecrystallinecone base the the from of rhabdom thecourse , following tight, dark Faraday cage. cage. Faraday tight, dark ntinuous adaptation light adaptation light ntinuous ethods) ethods

electrode either in the ventral ( eitherinthe electrode The r . spectral spectral

a male ( a male

in Supporting Information in . Each LED was switched on 5 min onswitched 5 was LED . Each esponse amplitude esponse ribed previously (Te previously ribed ) s of the light guide in the order red, amber red, intheorder s ofthelight guide

recordings control n -

made ( or female = 8) series series .

Matlab Matlab

To explore regional differences in the retina, we inserted a the retina, weinserted in differences To regional explore from from thedark intensities V lles et al. et lles I scripts (R2013b or R2015b, The MathWorks, 160 The MathWorks, orR2015b, (R2013b scripts

. Response characteristics ofthedark characteristics Response . was

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at the position of theeye positionat the 2014; J 2014; a - dult moth was moth dult adapted retina. retina. adapted , utes we monitored the state of the animal by of theanimal the state we monitored akobsson et al. akobsson as - value the absolute

intensity ( intensity before a series of recordings of recordings aseries before n

= 5) half of one . eye. compound of one 5)half = , green -

band spectral flashes of flashes spectral band mounted on a holder and and holderon a mounted ed by pauses of 5 s. After of5 pauses ed by

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retina retina ted ted This article isThis article by protected copyright. All rightsreserved. w UK) Congleton, (Labsphere, standard white reflectance X spectrometer Optics USB4000 anusing Ocean weremeasured asred classified females and10 Spectral reflectance measurements Reflectance curves selected type,we receptor specific non ( maxima sensitivity described in spectral series, Naka the Basedon 2017). of day dependence design ( nested witha effects models thee half thata elicited For thedark Rushton function ofresponses, level saturation rangeand thedynamic andtodocument the recordings change

Accepted see details (forfurther enon lamp Article - linear least squares approach ( approach squares least linear ffect of

in hours after midnight. midnight. after hours in

from the baseline at stimulus ons stimulus at the baseline from , w ,

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and fitted - was fitted was maximal response, and the slope of theNaka the slope and response, maximal - λ Rushton function fitted to fitted function Rushton

s measurement

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 linear linear ) ( of 16 white and 10 yellow males, as well as 8 females classified as orange orange as classified females aswell8 yellow10 males, whiteand16 of 2014 to each regression regression response

All statistical models were implemented in R v3.3.3. (R Core Team Core (R in Rv3.3.3. implemented were models All statistical ) . Template

number see S see Lindstedt et al. 2011; Nokelainen et al.2012 Nokelainen etLindstedt al.2011; V measurement number measurement - amplitudes for spectral flashes forspectral amplitudes

( log log models models upplementary repetitions et to maximal hyperpolarization tomaximal et s with minimal

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dataset based on anon dataset based the to the data, in the range of 300 to 700 nm, with 1 nm resolution, nm resolution, nm, with1 700 to 300 in theof range (Dunedin, FL, USA) FL,USA) (Dunedin, V )

on these three parameters using linear mixed linear parameters using these three on -

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as used for calibration for as used

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time time as This article isThis article by protected copyright. All rightsreserved. Acceptedhold conclusions photoreceptors moth noise in 2017 & Kristensen Kelber, that channel green receptor retina where a Weberfraction limitedby is mechanism Each receptor that thecontrast assume alog Article mechanisms. retinal opponent via neuronal levels intohigher thatpropagates receptor noise Osorio, 1998). and (Vorobyev areceptor using contrast visual We estimated spectrum,and illumination where catch The quantum calculations Model each ommatidium has 1 UV, 1 blue and 7 green receptors blue and7green 1 1 UV, has ommatidium each ) , . As r . As

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is the noise in each single receptor and single receptor each noise in is the

is wavelength, is wavelength, set receptor set eceptor noise and spatial summation and noise eceptor - linear relationship between receptor quantum catch and receptor signals, signals, receptor catchand quantum receptor between linear relationship

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UV, blue, greenUV, receptor (UV s

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are , is

suppose suppose

is thereflectance spectrum is the is the in honeybee :blue:

un known proportion green receptor)

ω that colour discrimination discrimination that colour

given by receptor noise: bygiven receptor (RNL) (RNL)

s for , as in various other as in , ( Vorobyev but see

A. plantaginis A.

model of colour discrimination discrimination ofcolour model of of each ) isgiven by: .

Beluši Given the Given

et al. et receptor also test whether also test

of thespecimen of , w ç

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moth uncertainty

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s = ln(

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This article isThis article by protected copyright. All rightsreserved. (Eq. 5): limited ( thecoefficients where axes: to the following diagram according of colourloci position the We determine S 2005) the illumination assuming when not change brown and to green corresponding spectra background twousing We M ( at contrast (just noticeable jnds is contrast colour The unitfor contrast Colour Cyanistes caeruleus 3

ethods )

Accepted . Article

calculated ,

daylight daylight

model s model

).

detection threshold

colour contrast colour contrast d uch

S

75, or light spectra typical for sunset or twilight (Johnsen et al., 2006) al., 2006) et twilight (Johnsen or forsunset spectra typical 75, orlight )

, weused

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,

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) scale the chromaticity diagram according to the receptor according diagram chromaticity the ) scale

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tetrachromatic tetrachromatic position of position

in

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differences)

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;

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, Victorsson

.

Eq 6 O S upplementary upplementary ur conclusions do do conclusions ur

Eq 9, Eq 9, Eq 8, Eq 7, in a chromaticity achromaticity in the ,

Eq 5.

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This article isThis article by protected copyright. All rightsreserved. difference of linearmixed a on are based twiceas large dark 2 in striking differences We observed neurons. downstream lamina retina and 2A) eyes of thecompound ERGs from E plantaginis is thelamina, opticneuropil, that thesecond eyes. asapposition likely function theeyes could bedetected, in rhabdoms of ≈18 plantaginis ofthe sections vertical We inspected anatomy Eye Results contrast Achromatic ; lectroretinograms (E lectroretinograms Acceptedd Article , indicating that we recorded photoreceptor responses only. responses photoreceptor that we recorded , indicating ata available from the Dryad Digital Repository: https://doi.org/10.5061/dryad. Repository: Digital the Dryad from ata available - adapted retina, t adapted

(Fig light The microscope. light under the

females 12 mV was highly significant ( significant mV washighly 12 in males (mean ± standard error: 18.6 ± 1.0 mV) as in females (6.5 ± 1.1 mV; values 1.1 (6.5± females 1.0 mV)as in error: 18.6± ±standard (mean in males . 1

). m thickness, a crystalline cone of about twice this length, and and twice length, about this cone of acrystalline m thickness,

(

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s calculated as Michelson contrast (see Supplementary (seeSupplementary contrast as Michelson s calculated =

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is probably the reason why our electrode did not pick up signals of notupsignals of did pick electrode our why the reason is probably , but100

maximal maximal

A

response

compound compound .

±11 plantaginis

 t response response (12) m long rhabdoms inmales rhabdoms m long

spatially strength between males betweenstrength males

- = 8.86, = 8.86, adapted eyes adapted

consisted of monophasic hyperpolari ofmonophasic consisted eyes and optic of lobes eyes and V not

p max

<

direct

to flashes of white light toof white light flashes

0.001, Table1). 0.001, (Fig. The sections of the heads oftheheads The sections ly

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adjacent 1 ) are close to spherical, to close spherical, are ( n

(

= male and female female and male n

= 8) theretinain to K

10 , the intensity that elicits that elicits , the intensity and females ( females and 76±8 76±8 M ) .

ethods). As no clear zone noclearzone As Eq 10. was more than than was more

 s46t627 individual z m long m long ations also

Arctia Arctia A. n have a have

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This article isThis article by protected copyright. All rightsreserved. Accepted figures preparing discussed All authors models. vision calculatedcolour OL ERGs, andanalysed measured MJH eyehistology, AKstudied the species, on study knowledge andecological wingspectra animals, provided andBR JM theplanned study. andAK BR, JM, MJH contributions Author Kelber (2100000256) Interactions of earlier versions W with statistics. on analyses data advice for to Thomas Labhart equipment, eye types lepidopteran plantaginis of measurements reflectance providing forkindly C.Lindstedt and Nokelainen O. to animals, the for rearing ofJyväskylä Article theUniversity at staff andtheto greenhouse K.Suisto We are grateful Acknowledgements investigation selection her approached colo Galarza 2014; variable against predators advantage areusually genetic factors u ration is unlikely is ration (2012 selection by by selection ,

, to Carina Rasmussen for excellenthelp for Carina Rasmussen , to or

. whether other traitswhether other -

2212) and O. Lind (637 Lind andO. 2212) et al. , favour e thank ,

and the manuscript.

2014). 2014). predat

, , to Thomas Labhart, Eric Warrant andDan EricWarrant Labhart, Thomas , to approved

but but ing Alan Goldizen Alan involved

O to J. Mappes and B. Rojas, B.Rojas, and to J.Mappes the UV ors a female a while ur results ur

seem to offer an explanation for polymorphism (Nokelainen et al. al. et (Nokelainen polymorphism for explanation an toseem offer

publication. explain

white - Funding from Funding . reflecting reflecting

I may use chromatic cues formate cues usechromatic may n - 2013 on A. A.

and three anonymous reviewers reviewers threeanonymous and

male mating success of white males ofwhitemales mating success

A. plantaginis plantaginis - 388)

No author has any conflict ofinterest. has conflict any author No s white males. Whetherfemales white males. tend totend

is gratefully acknowledged. acknowledged. is gratefully the Finnish Centre of Excellence in Biological in Biological ofExcellence Centre the Finnish

with histology with , where , where and and

have have the vision confirm that male selection for female female selectionfor that male confirm vision results, c from the Swedish Research Research thefrom Swedish

and yellow yellow a mating a mating

to Alan Ho fordili Ho Alan to , to Dan to ,

males, on males, - ontributed E. Nilsson for accessto Nilsson for E. advantage choice better, - for critical E. Nilsson for insights into insights for E. Nilsson

use visual cues in mate cuesinmate use visual

average once a male hasmale a once

to writing text and to and text writing requires requires , gene flow , gene gent assistance gentassistance

comments on comments ,

have an an have Council to A. to Council further

and and A.

This article isThis article by protected copyright. All rightsreserved. AcceptedFinkbeiner Endler, J. Endler, J. L Crothers W. Conner, (2008) Briscoe, A.D. Brain Beluši Article(1982) Barlow, H.B. K., St Arikawa, References found All accessibility Data original original ,

ç M o , G., Šporar, K., & Megli & K., Šporar, , G., butterflies. attraction in andmate avoidance predator to pattern of colorand contributions American Naturalist of Biology Naturalist poison frog. ofapolytypic inpopulations selection natural radarof the work under Arctiidae. Biology Experimental Finland. ofJyväskylä, University Thesis, MSc tigermoth. wood female defence inthe mothborer Vision Research 1 andnon ofvisual Evolution & Collin P. S. Hankins, W. Hunt,M. D. M. adaptations. In visual n . - A. A. & A. A. the 4614 , .

R E. (Ed.) E. data used in this study study in this used data

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( (1983) 2016 . & . . Dryad Digital Repository: https://doi.org/10.5061/dryad. s46t627. https://doi.org/10.5061/dryad. Repository: Dryad Digital D

- Mappes, J.(2004) Mappes, avenga, D.G. (2014) D.G. avenga, 4355 .

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, C Spodoptera exempta Spodoptera a tiger inmoth colour discrimination predators and of conspecifics theeyes through moth seen polymorphic 1469 ( moth woodtiger ofthe coloration in warning signal o America United States of eyesoftheirpredators. inthe conspicuous template. pigment visual Animal Ecology frequency positive apart byopposing plantaginis ( moth tiger wood the aposematic in signal variation between andwarning genetic

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This article isThis article by protected copyright. All rightsreserved. Accepted references Supplementary Figure S3 Figure S2 Figure S1 S3 Table S2 Table S1 Table methods Supplementary ofthisarticle. the onlineversion foundin be may information Additional supporting INFORMATION SUPPORTING Article Zylinski & Stiles,W. G. Wyszecki, H. Xu, White, R.H., E. Warrant, Vorobyev Journal of Experimental Biology ofExperimental Journal f regional specialization ofgreen mosaic the expression, rhodopsin Handbook of the Royal ,

ormulae, 2nd Edn. New York: Wiley. New Edn. York: 2nd ormulae, S , Sex and time effects andtime Sex Chromatic contrasts for equally spacedreceptors forequally Chromatic contrasts proportions receptor for1:1:1 Chromatic contrasts .

Achromatic (Michelson) contrasts of wing colours ofwing (Michelson)contrasts Achromatic , Osorio Effect of i Effect proportions for1:1:1receptor contrasts Chromatic M J., Kelber, A. & Kristensen, N & Kristensen, Kelber, A. J., . , Osorio Society B Society ,

H. Z D llumina oology Vol. IV 36, Lepidoptera 2 Lepidoptera IV36, Vol. oology , .

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(1998) Receptor noise as a determinant of colour thresholds. thresholds. colour of asadeterminant noise Receptor (1998) for ERGs and visual models visual and ERGs for (2000) tion

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on ERGs on ERGs Journal of Experimental Biology ofExperimental Journal

. on chromatic contrasts chromatic on A

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This article isThis article by protected copyright. All rightsreserved. Accepted Article

This article isThis article by protected copyright. All rightsreserved. Accepted Article

This article isThis article by protected copyright. All rightsreserved. Accepted Article

This article isThis article by protected copyright. All rightsreserved. Accepted Article

This article isThis article by protected copyright. All rightsreserved. Accepted Article

This article isThis article by protected copyright. All rightsreserved. Accepted Article

This article isThis article by protected copyright. All rightsreserved. Accepted Article