Camouflage, communication and thermoregulation: lessons from colour changing organisms

Stuart‐Fox, Devi; Moussalli, Adnan

doi:10.1098/rstb.2008.0254

Cited by 283 publications

(255 citation statements)

References 60 publications

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“…A pigmentação mais escura das larvas permite maior sobrevivência, uma vez que esta é fortemente relacionada à camuflagem (Stuart-Fox & Moussalli, 2008). Em peixes reolíficos, a cor da água dos locais de desova serve de camuflagem para ovos e larvas, o que constitui uma estratégia de proteção da prole (Balshine & Sloman, 2011).…”

Section: Resultsunclassified

Larvicultura de piabanha-do-pardo em aquários de cores diferentes

Costa

Pedreira

Coraspe-Amaral

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de diferentes cores de aquários na larvicultura da piabanha-do-pardo (Brycon sp.). Os tratamentos consistiram na utilização de aquários de cores claras (branca, verde e azul) e escuras (marrom e preta). Ao final do experimento, foram mensurados a sobrevivência, o peso, o comprimento total e a coloração das larvas, que foram comparados pelo teste de Tukey, a 5% de probabilidade. A sobrevivência foi menor (66,25%), com maior taxa de canibalismo (17,08%), no aquário de cor azul, quando comparado ao aquário de cor marrom (84,17%), com baixa taxa de canibalismo (6,25%). O comprimento total, o peso e a mortalidade não diferiram entre os tratamentos. A coloração das larvas escureceu progressivamente dos aquários mais claros para os mais escuros, o que interferiu no canibalismo e na sobrevivência. O aquário marrom promove maior valor de sobrevivência e menor taxa de canibalismo nas larvas de piabanha-do-pardo.Termos para indexação: Brycon, canibalismo, coloração, mortalidade, pigmentação. Larviculture of piabanha-do-pardo in aquariums of different colorsAbstract -The objective of this work was to evaluate the effect of different colors of aquariums on the larviculture of piabanha-do-pardo (Brycon sp.). The treatments consisted of the use of light-(white, green, and blue) and dark-(brown and black) colored aquariums. At the end of the experiment, survival, weight, total length, and color of the larvae were measured and compared by the Tukey test, at 5% probability. Survival was lower (66.25%), with a higher rate of cannibalism (17.08%), in the blue-colored aquarium when compared to the brown-colored one (84.17%), with a low rate of cannibalism (6.25%). Total length, weight, and mortality did not differ among treatments. The color of the larvae gradually darkened from the lighter to the darker aquariums, which interfered with cannibalism and survival. The brown aquarium promotes a greater survival value and a lower rate of cannibalism in larvae of piabanha-do-pardo.

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Section: Resultsunclassified

Larvicultura de piabanha-do-pardo em aquários de cores diferentes

Costa

Pedreira

Coraspe-Amaral

et al. 2013

Pesq. agropec. bras.

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“…Since there are generally two ways of colouration, pigmentary and structural colours, colour variation can be attributed to one of them or both. Among wide varieties of animals that can physiologically change their colours (for a recent review, see [27]), we here restrict our discussion to several cases in which structural colouration has been reported to play a major role.…”

Section: Discussionmentioning

confidence: 99%

Mechanism of variable structural colour in the neon tetra: quantitative evaluation of the Venetian blind model

Yoshioka

Matsuhana

Tanaka

et al. 2010

J. R. Soc. Interface.

116

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The structural colour of the neon tetra is distinguishable from those of, e.g., butterfly wings and bird feathers, because it can change in response to the light intensity of the surrounding environment. This fact clearly indicates the variability of the colour-producing microstructures. It has been known that an iridophore of the neon tetra contains a few stacks of periodically arranged light-reflecting platelets, which can cause multilayer optical interference phenomena. As a mechanism of the colour variability, the Venetian blind model has been proposed, in which the light-reflecting platelets are assumed to be tilted during colour change, resulting in a variation in the spacing between the platelets. In order to quantitatively evaluate the validity of this model, we have performed a detailed optical study of a single stack of platelets inside an iridophore. In particular, we have prepared a new optical system that can simultaneously measure both the spectrum and direction of the reflected light, which are expected to be closely related to each other in the Venetian blind model. The experimental results and detailed analysis are found to quantitatively verify the model.

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“…Development may be hindered by the need to produce greater amounts of melanin for thermoregulation that requires more nitrogen (Talloen et al 2004, Ojala et al 2007, which is often a limited resource (Mattson 1980). Although not a warning signal trade-off, sex-specific color change in alpine grasshoppers (Kosciuscola tristis) demonstrates a signaling tradeoff between intraspecific signaling to mates and thermoregulation (Stuart-Fox & Moussalli 2009). Female alpine grasshoppers prefer bright blue males.…”

Section: Trait Trade-offs and Interactionsmentioning

confidence: 99%

“…Above 25 o C most males turn bright blue, but below 15 o C most males turn highly melanized because melanin seems to benefit thermoregulation (Key & Day 1954). Thus, thermoregulation appears to constrain the ability of males to display more appealing signals to prospective mates in lower temperatures (Key & Day 1954, Stuart-Fox & Moussalli 2009). In a similar way, melanization may limit the amount of other pigments important in the warning signal of aposematic species, thereby setting the stage for trade-offs between signaling and thermoregulation (Speed & Ruxton 2007, Lindstedt et al 2009).…”

Section: Trait Trade-offs and Interactionsmentioning

confidence: 99%

Influences of geographic differentiation in the forewing warning signal of the wood tiger moth in Alaska

Hegna

Mappes

2014

Evol Ecol

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Geographic Variation in the WarningSignals of the Wood Tiger Moth (Parasemia plantaginis; Arctiidae)Esitetään Jyväskylän yliopiston matemaattis-luonnontieteellisen tiedekunnan suostumuksella julkisesti tarkastettavaksi yliopiston Ylistönrinteellä, salissa YAA303 marraskuun 8. päivänä 2013 kello 12.Academic dissertation to be publicly discussed, Warning signals are not expected to be diverse because they are under stabilizing selection. This dissertation aims to study historic and contemporary selection mechanisms underlying the geographic warning signal diversity in the wood tiger moth (Parasemia plantaginis). In the first study, I explored the variation in hindwing warning color frequencies across the distribution of P. plantaginis and the phylogeography of the species. Males have polymorphic hindwing color (yellow or white) across much of their distribution but turn reddish in the Caucasus and mostly white in Japan, which coincide with mitogenetic divergence. Females vary continuously in hindwing warning color between yellow and red, becoming yellow east of the Ural mountain range, but does not correspond to mitogenetic divergence. Post-glacial isolation may be one contributing factor to the genetic divergence and the hindwing warning signal differences in the Caucasus region. In the second study, I found that thermoregulation benefits of melanin can trade-off with a larger more effective warning signal, which contributes to variation in melanization within Europe. In the third study, I found that forewing patterns function as warning signals and that generalization by predators might play an important role in warning signal diversity along with frequency dependent selection. In the fourth chapter, I found three populations in Japan differing in warning signal traits with some gene flow suggesting both selection and isolation may be underlying causes. Overall, my results suggest that historical and abiotic factors contribute to the observed warning signal diversity in P. plantaginis, rather than predation alone. This adds to our understanding of how historical factors along with environmental heterogeneity in biotic and abiotic factors can promote warning signal diversity. My results highlight the need to take an integrated approach to studying geographic diversity in warning signals.

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Camouflage, communication and thermoregulation: lessons from colour changing organisms

Cited by 283 publications

References 60 publications

Larvicultura de piabanha-do-pardo em aquários de cores diferentes

Larvicultura de piabanha-do-pardo em aquários de cores diferentes

Mechanism of variable structural colour in the neon tetra: quantitative evaluation of the Venetian blind model

Influences of geographic differentiation in the forewing warning signal of the wood tiger moth in Alaska

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