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Showing 1 to 19 of 19 for “"Heliconius"”.
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Adaptation to altitude in Heliconius butterflies
… underlying adaptation to altitude in the Heliconius butterfly genus. Firstly, using a collection of over 3500 wings I discovered that wing morphology varies predictably across elevations, with species and populations in the highlands having rounder wings than those in the lowlands. This …
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Intra and inter-specific communication in Heliconius
Las mariposas del género Heliconius son un excelente ejemplo de mimetismo Mülleriano, donde especies filogenéticamente distantes convergen en un fenotipo alar casi idéntico cuando se encuentran en simpatría. Sin embargo, pocos estudios han abordado de manera integral la precisión del mimetismo y la …
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Genetic architecture and ecological speciation in Heliconius butterflies
… driving speciation. In the Neotropical genus Heliconius, distantly related pairs of unpalatable species often converge on the same bright warning-pattern to more efficiently advertise their distastefulness to predators. In contrast, closely related taxa often belong to different mimicry rings. …
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Pheromones in Heliconius butterflies: Chemical ecology, genetics, and behaviour
… night-flying moths. The Neotropical butterflies, Heliconius, have a long history of ecological and genetic studies. Mate choice trials have focused on male preference for female colour pattern. In addition, two types of pheromone have been described in Heliconius. The first is produced by a region …
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Developmental Basis of Wing Pattern Diversity in Heliconius Butterflies
… networks can lead to biological diversity. Heliconius butterfly wing patterns provide an excellent example of this diversity. In particular, the species H. melpomene and H. erato display wide variation in wing pattern across their ranges in Central and South America, but wherever they …
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The genomic basis of species barriers in Heliconius butterflies
… in the evolution of genetic incompatibilities. Heliconius is a genus of neotropical butterfly best know for their Müllerian mimicry. Here I focus on Heliconius cydno and Heliconius melpomene, two hybridising sympatric species with low levels of inter-specific hybridisation that nonetheless …
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Coevolution of Heliconius spp. and Passiflora spp. : a phylogenetic comparison
… of research has been done on all aspects ofHeliconius biology and their ecological interactions with Passiflora, there has not hitherto been a phylogenetic examination of this association for coevolution. To test the HeliconiuslPassilfora association for coevolutionary congruence, …
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Mushroom body expansion and the cognitive ecology of Heliconius butterflies
Heliconius butterflies, a Neotropical genus of approximately 50 species, exhibit a marked expansion of an insect brain structure called the mushroom bodies (MBs), which are 3-4 times larger than in other Lepidoptera, including closely related Heliconiini genera. MBs are known to play a role in …
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Hybridization and the genetics of wing colour-pattern diversity in Heliconius butterflies
… zones between races of two mimetic species of Heliconius butterflies: Heliconius melpomene and H. erato, in Eastern Ecuador, South America. This thesis work is composed of four empirical studies: 1) a characterization of the phenotypic effects caused by the major wing colour-pattern loci that …
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Behavioural and ecological interactions between Heliconius butterflies, their predators and host plants
Heliconius butterflies exhibit Müllerian mimicry, in which two or more unpalatable species share a mutual advantage from having a common conspicuous colour pattern. These tropical butterflies have impressive visual signals, which are under conflicting selection pressures, as they are used in …
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Drivers of diversification in Heliconius, with special focus on the sara/sapho clade
… de las mariposas neotropicales del género Heliconius, especialmente las especies del clado sara/sapho. Aunque Heliconius es uno de los grupos mejor estudiados en el contexto de la biología evolutiva y la ecología, el clado sara/sapho ha sido en gran medida poco estudiado a pesar de tener …
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Manutenção de Populações de Borboletas do Gênero Heliconius em um Complexo Siderúrgico Industrial
… redução das populações das borboletas adultas de Heliconius spp. em ambientes impactados? a. Hipótese: a presença dos recursos; b. Hipótese: as condições ambientais. Pergunta : Por que as populações são afetadas negativamente nesses ambientes altamente im- pactados pela poluição? a. Hipótese: …
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Genómica de la diversificación de Heliconius cydno (Lepidóptera: Nymphalidae) en el norte de Suramérica: patrones geográficos y fenotípicos
… en la radiación adaptativa reciente (∼1.5 Ma) de Heliconius cydno, una mariposa mimética y aposemática ampliamente distribuida desde Centroamérica hasta el norte de Suramérica, que presenta una notable variación en sus patrones de coloración alar. Esta diversidad fenotípica está determinada por …
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A Tale of Two Butterflies: The Effect of Larval Social Environment and Circadian Rhythms on Mating Behavior in Bicyclus anynana and Heliconius hewitsoni
… mate choice and if courtship is circadian in Heliconius hewitsoni. My first experiment concerned kin recognition. When inbred, Bicyclus anynana are known to suffer from inbreeding depression, however populations can recover lost fitness within just a few generations when allowed to mate …
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Rapid diversification and wing colour pattern evolution in tropical butterflies
… changes in phenotypes. Ithomiini butterflies and Heliconius are classic examples of rapidly radiating Neotropical butterfly genera participating in these mimicry rings. Such recent and rapid adaptive radiations are ideal systems for addressing how new species arise because they may preserve key …
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Macroevolution and phylogenomics in the adaptive radiation of Heliconiini butterflies
… biology over the last decade. The mimetic Heliconius butterflies of the Neotropics have served as a prominent example of both, although the vast majority of studies have focused exclusively on very recent divergences and on colour pattern adaptation, neglecting deeper timescales and …
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Hox3 duplication and divergence in the Lepidoptera
… the Ditrysia, within the more recently diverged Heliconius genus, and at the intraspecific level by quantifying nucleotide polymorphism within Pararge aegeria. Selective pressures were found to be operating between paralogous and orthologous genes, suggesting these have evolved, in part, under …
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Mathematical quantification and statistical analysis of bombus (hymenoptera:apidae) dorsal color patterns
… Fritz Müller first noticed it among Amazonian Heliconius butterflies. It has been documented in a wide variety of taxa, vertebrate and invertebrate alike, from birds to Chauliognathus beetles and bees. In bumble bees (Bombus), Müllerian mimicry has been hypothesized to occur in the form of …
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Changes in Gene Expression and Viral Titer in Varroa Jacobsoni Mites After a Host Shift Asian to European Honey Bees
… Exsecta Virus 2, Halyomorpha Halys Virus, Heliconius Erato Iflavirus, Kakugo Virus, Kirsten Murine Sarcoma Virus, Sacbrood Virus, Spodoptera Exigua Iflavirus 1. Our findings suggest that overall all the mite samples had similar viruses, with slight variations in the abundance of certain …