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139 results for “color variation”
FIGURES 1–4 in A new species of tree crickets (Orthoptera, Gryllidae, Oecanthinae) in tobacco plantation from Southern Brazil, with body color variation
FIGURES 1–4. Male habitus of Oecanthus pictus n. sp. paratypes representing the groups according color pattern. 1—Male of the group 1. 2—Male of the group 2. 3—Male of the group 3. 4—Male of the group 4.
FIGURE 1. Epicadus species, color variation. A–C E in Taxonomic revision of the crab spider genus Epicadus Simon, 1895 (Arachnida: Araneae: Thomisidae) with notes on related genera of Stephanopinae Simon, 1895
FIGURE 1. Epicadus species, color variation. A–C E. heterogaster; D–F E. rubripes; G–I E. planus. Photo credits (and localities): A Maxwel Rocha (Unknown locality); B Carlos Viquez (Costa Rica); C Anonymous (Amazônia, Brazil); D–F, Almir Cândido de Almeida (Ribeirão Grande, São Paulo, Brazil); G Arthur Anker (Peru); H Enio Branco (Aracoiaba da Serra, São Paulo, Brazil); I Projeto Dacnis team (Alex Mariano and Edelcio Muscat) (Ubatuba, São Paulo, Brazil).
FIGURE 8. Orconectes cyanodigitus color pattern variations. Specimens are from site 3 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas
FIGURE 8. Orconectes cyanodigitus color pattern variations. Specimens are from site 3 (a, b, e, f) and site 4 (c, d).
FIGURE 7 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 7. Box plot of color pattern classes (Phenotypes I, II and III) by standard length (a, b, and c referring to significant differences as eVidenced by ANOVA).
FIGURE 8 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 8. Median-joining networks between haplotypes (A) and Bayesian phylogenetic tree (B) of the COI gene to phenotypes of Trichomycterus davisi from the Ribeirão João Pinheiro and Rio Iguaçu. and T. iheringi. In A) each circle represents a unique haplotype with circle sizes being proportional to their frequencies. Each color is corresponding to a phenotype, and the numbers in parentheses represent the mutation steps between haplotypes. In B) the numbers on the nodes represent posterior probability higher than 95%.
FIGURE 5 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 5. Scatter plot of indiVidual scores from the combined samples of Trichomycterus davisi phenotypes of the Ribeirão João Pinheiro in the first three axes of the Principal Component Analysis (PCA). Phenotype I (open squares), Phenotype II (filled squares), and Phenotype III (crosses).
FIGURE 6 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 6. Frequencies (%) of the number of specimens by color pattern classes (Phenotypes I, II, and III).
FIGURE 4 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 4. Type-specimens of T. davisi. A) FMNH 60309, holotype, 41.3 mm SL, b) FMNH 54242, paratype, 43.5 mm SL, and C) FMNH 54242, paratype, 23.2 mm SL.
FIGURE 3 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 3. Color pattern Variation in T. davisi of Ribeirão João Pinheiro, Telêmaco Borba, state of Paraná, Brazil. MZUEL 11776, Phenotype I (specimens A, 84.56 mm SL, and B, 43.91 mm SL), Phenotype II (specimens C, 68.24 mm SL, D, 49.28 mm SL and E, 73.56 mm SL) and Phenotype III (specimens F, 53.11 mm SL, and G, 34.83 mm SL). Scale bars represent 10 mm.
FIGURE 1 in Intrapopulational variation in color pattern of Trichomycterus davisi (Haseman, 1911) (Siluriformes: Trichomycteridae) corroborated by morphometrics and molecular analysis
FIGURE 1. Location of sampling area in the Ribeirão João Pinheiro, 24°16'41"S, 050°35'12"w, Fazenda Monte Alegre Ecological ReserVe, Telêmaco Borba (yellow diamond) and Ribeirão Macaquinho, 25°38'34"S, 049°35'24"w, Serrinha, Município de Contenda, near the type locality of Trichomycterus davisi (yellow star), state of Paraná, Brazil.
Data from: Floral color variation across life history and geography in Mimulus ringens (Phrymaceae)
<p>With these data, we explore the possibility that both floral color and life history have shifted together in a recently described, genetically distinct group within the species <em>Mimulus ringens</em>. Using a large, range-wide citizen science dataset, we test for geographic trends in flower color and flowering time. We combine this with greenhouse studies in populations of known life history to test for differences in flower color with life history. We show that darker-flowered plants are more common at higher latitudes, that annual-like populations have darker flowers, and that flowering time varies with latitude only in the subset of populations that have lighter flowers. This suggests that annual-like populations (with the earlier flowering time typical of this life history) are restricted to the northern part of the species range, and likely arose there. </p>
Genetic and behavioral factors affecting interpopulation color pattern variation in two congeneric chameleon species
<p>We conducted a study on interpopulation variation of color patterns in two congeneric chameleon species, which have an analogous life history. Both species are able to rapidly change color pattern, and context-dependent color patterns often vary across a wide geographic range. Specifically, we tested four hypotheses that can explain the observed interpopulation variation of color patterns by a series of behavioral field trials where the color patterns of individuals were recorded and later analyzed by a deep neural network algorithm. We used redundancy analysis (dbRDA) to relate genetic, spectral, and behavioral predictors to interpopulation color pattern distance. Our results showed that both isolation by distance and alternative mating tactics were significant predictors for interpopulation color pattern variation in <em>Chamaeleo</em> <em>chamaeleon</em> males. In contrast, in <em>C. dilepis</em>, the interpopulation color pattern variation was largely explained by isolation by distance, and the evidence for alternative mating tactics was absent. In both chameleon species, the environmental colors showed no evidence of influencing chameleon interpopulation color pattern variation, regardless of sex or behavioral context. This contrasting finding suggests that interpopulation context-dependent color pattern variations in each species are maintained under a different set of selective pressures or circumstances.</p>
FIGURE 7. Danielatettix caudatus n. comb. Color variation A. Color form 2. B. Form 3. C. Form 4. D. Form 5 in The status of Micronotus Hancock, 1902 species (Orthoptera: Tetrigidae)
FIGURE 7. Danielatettix caudatus n. comb. Color variation A. Color form 2. B. Form 3. C. Form 4. D. Form 5.
Dewlap color variation in Anolis sagrei is maintained among habitats within islands of the West Indies
<p>Animal signals evolve in an ecological context. Locally adapting animal sexual signals can be especially important for initiating or reinforcing reproductive isolation during the early stages of speciation. Previous studies have demonstrated that dewlap color in Anolis lizards can be highly variable between populations in relation to both biotic and abiotic adaptive drivers at relatively large geographical scales. Here, we investigated differentiation of dewlap coloration among habitat types at a small spatial scale, within multiple islands of the West Indies, to test the hypothesis that similar local adaptive processes occur over smaller spatial scales. We explored variation in dewlap coloration in the most widespread species of anole, Anolis sagrei, across three characteristic habitats spanning the Bahamas and the Cayman Islands, namely beach scrub, primary coppice forest and mangrove forest. Using reflectance spectrometry paired with supervised machine learning, we found significant differences in spectral properties of the dewlap between habitats within small islands, sometimes over very short distances. Passive divergence in dewlap phenotype associated with isolation-by-distance did not explain our results. On the other hand, these habitat-specific dewlap differences varied in magnitude and direction across islands, and thus our primary test for adaptation -- parallel responses across islands -- was not supported. We suggest that neutral processes or selection could be involved in several ways, including sexual selection. Our results shed new light on the scale at which signal color polymorphism can be maintained in the presence of gene flow, and the relative role of local adaptation and other processes in driving these patterns.</p>
FIGURE. Drosera communis (a–d): a, habit with emerging inflorescence (Parque Nacional das Sempre-Vivas, MG); b, habit with emerging inflorescence; c, variation in flower color within a population (Parque Nacional da Chapada dos Veadeiros, GO); d, habit (Paranapiacaba, SP). Drosera esmeraldae (e, f): e, habit (Puerto Inirida, Guainía, Colombia); f, flower (Gran Sabana, Bolívar, Venezuela). Drosera graminifolia (g–i): g, habit; h, detail of the leaf bases and stipules; i, flower (Serra do Caraça, MG). Photo credits: a–d, g–i by PMG; e by FR; f by AF. in A synopsis of the genus Drosera (Droseraceae) in Brazil
FIGURE. Drosera communis (a–d): a, habit with emerging inflorescence (Parque Nacional das Sempre-Vivas, MG); b, habit with emerging inflorescence; c, variation in flower color within a population (Parque Nacional da Chapada dos Veadeiros, GO); d, habit (Paranapiacaba, SP). Drosera esmeraldae (e, f): e, habit (Puerto Inirida, Guainía, Colombia); f, flower (Gran Sabana, Bolívar, Venezuela). Drosera graminifolia (g–i): g, habit; h, detail of the leaf bases and stipules; i, flower (Serra do Caraça, MG). Photo credits: a–d, g–i by PMG; e by FR; f by AF.
Goldenberg, J., Bisschop, K., Bruni, G., Di Nicola, M. R., Banfi, F., Faraone, F. P. "Replication Data for: Melanin-based color variation in response to changing climates in snakes"
<p>This repository contains the data used to produce the manuscrpit "Melanin-based color variation in response to changing climates in snakes" by Goldenberg, J., Bisschop, K., Bruni, G., Di Nicola, M. R., Banfi, F., Faraone, F. P.</p> <p>Article DOI: 10.1002/ece3.11627</p> <p>Journal: Ecology and Evolution</p>
FIGURE 6 in First record of Indolestes cyaneus (Selys, 1862) from Vietnam and notes on its color variation (Odonata: Zygoptera: Lestidae)
FIGURE 6. Habitat of Indolestes cyaneus in Tr'hy commune, Tay Giang district, Quang Nam Province (photographed by Van Quang To).
FIGURE 5 in First record of Indolestes cyaneus (Selys, 1862) from Vietnam and notes on its color variation (Odonata: Zygoptera: Lestidae)
FIGURE 5. Male and female of Indolestes cyaneus in nature, taken in Nuranang Waterfall, Tawang, Arunachal Pradesh, India. 8.xi.2017 (photographed by Arajush Payra).
FIGURE 1 in First record of Indolestes cyaneus (Selys, 1862) from Vietnam and notes on its color variation (Odonata: Zygoptera: Lestidae)
FIGURE 1. Habitus of male (1a) and female (1b) of Indolestes cyaneus from Tay Giang District, Quang Nam Province, Vietnam. Scale bar is 1cm.
FIGURE 4 in First record of Indolestes cyaneus (Selys, 1862) from Vietnam and notes on its color variation (Odonata: Zygoptera: Lestidae)
FIGURE 4. Appendages of Indolestes cyaneus of [a-b] Vietnam (Tay Giang) & [c-d], India (Arunachal Pradesh). Scale bar is 1 mm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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