What Makes a Mimic? Orange, Red, and Black Color Production in the Mimic Poison Frog (Ranitomeya imitator)

Genome Biology and Evolution, Journal Year: 2024, Volume and Issue: 16(7)

Published: June 14, 2024

Abstract Aposematic organisms rely on their conspicuous appearance to signal that they are defended and unpalatable. Such phenotypes strongly tied survival reproduction. colors patterns highly variable; however, the genetic, biochemical, physiological mechanisms producing this coloration remain largely unidentified. Here, we identify genes potentially affecting color variation in two morphs of Ranitomeya imitator: orange-banded Sauce redheaded Varadero morphs. We examine gene expression black orange skin patches from morph red morph. identified differentially expressed between patches, including those involved melanin synthesis (e.g. mlana, pmel, tyrp1), iridophore development paics, ppat, ak1), pteridine gch1, pax3-a, xdh), carotenoid metabolism dgat2, rbp1, scarb2). In addition, using weighted correlation network analysis, top 50 with high connectivity most significant associated differences Of these genes, 13 were known be related production (gch1, gmps, gpr143, impdh1, mc1r, pax7, rab27a, rlbp1, tfec, trpm1, xdh).

Language: Английский

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Evolution and Diversification of the Aposematic Poison Frog,Oophaga pumilio,in Bocas del Toro

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract The aposematic strawberry poison frog, Oophaga pumilio , is an iconic model system for studying the evolution and maintenance of color variation. Through most its range, this frog red with blue limbs. However, frogs from Bocas del Toro Province, Panama, show striking variance in pattern, both sympatrically allopatrically. This observation contradicts standard models aposematism has led to substantial speculation about evolutionary molecular causes. Since enigma O. phenotypic variation partly unresolved because large, ∼ 6.7 Gb genome, we here sequence exomes 347 individuals ten populations map a number genetic factors responsible pattern kit gene primary candidate underlying blue-red polymorphism Dolphin Bay, where increase melanosomes correlated coloration. Additionally, ttc39b gene, known enhancer yellow-to-red carotenoid conversion birds, factor behind yellow-red Bastimentos West area. causal regions evidence selective sweeps acting locally spread rare phenotype. Our analyses suggest which selection driving formation new morphs dynamic resulting trade-off between predation avoidance, intraspecific competition, mate choice.

Language: Английский

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Developments in the study of poison frog evolutionary ecology II: decoding hidden messages in their coloration and unique behaviours

Evolutionary Ecology, Journal Year: 2024, Volume and Issue: 38(5), P. 551 - 570

Published: Oct. 1, 2024

Language: Английский

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