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1,104 results for “morphological variation”
FIGURE 5 in Morphological variation and affinities of the poorly known snake Atractus caxiuana (Serpentes: Dipsadidae)
FIGURE 5. Geographical distribution known for Atractus caxiuana. The white dot represents the type-locality of the species.
FIGURE 4 in Morphological variation and affinities of the poorly known snake Atractus caxiuana (Serpentes: Dipsadidae)
FIGURE 4. Sulcate (A) and asulcate (B) sides of the hemipenis of Atractus caxiuana from Vila Cachoeira do Samuel, municipality of Porto Velho, state of Rondônia, Brazil (MNRJ 3026). Scale bar = 1 mm.
FIGURE 3 in Morphological variation and affinities of the poorly known snake Atractus caxiuana (Serpentes: Dipsadidae)
FIGURE 3. Dorsal (A) and ventral (B) views of an adult preserved specimen of Atractus caxiuana from Taraira, department of Vaupés, Colombia (ICN 10114). Scale bar = 10 mm.
FIGURE 2 in Morphological variation and affinities of the poorly known snake Atractus caxiuana (Serpentes: Dipsadidae)
FIGURE 2. Dorsal (A), dorsolateral (B) and lateral (C) views of a juvenile specimen of Atractus caxiuana in life from the right bank of the Rio Madeira, municipality of Porto Velho, state of Rondônia, Brazil (MZUSP 18892). Photos by Renato Gaiga.
FIGURE 1 in Morphological variation and affinities of the poorly known snake Atractus caxiuana (Serpentes: Dipsadidae)
FIGURE 1. Dorsal (A), lateral (B) and ventral (C) views of the head of Atractus caxiuana from Vila Cachoeira do Samuel, municipality of Porto Velho, state of Rondônia, Brazil (MNRJ 3026). The arrow indicates the azygous scale located between the internasal shields. Scale bar = 5 mm.
FIGURE 9 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 9. Lateral (A), dorsal (B), and ventral (D) views of the snout and detailed dorsolateral view of anterior region of skull (C) of Hydrodynastes bicinctus (MNRJ 4767). Frontal = F; nasal = N; prefrontal = PF; vomer = V; septomaxilla = SM; premaxilla = PM; palatine = PAL; maxilla = MX; parietal = P; postorbital = PO; ectopterygoid = ECT. Scale = 2.5 mm.
FIGURE 7 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 7. Cephalic glands of Hydrodynastes bicinctus (MNRJ 4769). Lateral view after removing the skin (A), lateral view after removing the orbit, Duvernoy's gland and adductor externus medius (aem), adductor externus superficialis (aes), and levator anguli oris (lao) muscles (B), and ventral view exposing infralabial and sublingual glands (C). Duvernoy's gland = D.g; supralabial gland = s.g.; nasal gland = n.g; premaxillary gland = p.g; Harderian gland = H.g.; lateral sublingual gland = l.s.g.; medial sublingual gland = m.s.g.; infralabial gland = i.g. Scale = 5 mm.
FIGURE 8 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 8. Dorsal (A), lateral (B), and ventral views (C) of the skull of Hydrodynastes bicinctus (MNRJ 4767). Premaxilla = PM; septomaxilla = SM; nasals = N; frontals = F; parietals = P; supratemporal = ST; exoccipital = EXO; supraoccipital = S; maxilla = MX; prefrontal = PF; postorbital = PO; prootic = PR; quadrate = Q; vomer = V; palatine = PAL; ectopterygoid = ECT; parabasisphenoid = PBS; pterygoid = PT; basioccipital = BO. Scale = 5 mm.
FIGURE 10 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 10. Lateral view of posterior region of the skull (MNRJ 4769 - A), detail of dorsal view of ectopterygoid (MNRJ 4767 – B), dorsal (C) and ventral (D) views of pterygoid and ectopterygoid (MNRJ 4769), medial (E), and lateral (F) views of quadrate (MNRJ 4769), and medial (G) and lateral (H) views of mandible of Hydrodynastes bicinctus (MNRJ 4767). Supratemporal = ST; prootic = PR; anterior foramen of prootic = f.a. PR; posterior foramen of prootic = f.p. PR; fenestra ovalis = fe.o.; Maxilla = MX; ectopterygoid = ECT; pterygoid = PT; quadrate = Q; compound bone = CB; articular = A; splenial = SP; dentary = D. Scale = 2.5 mm.
FIGURE 5 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 5. Dorsal color pattern of a juvenile of Hydrodynastes bicinctus (MZUSP 16976). Scale = 10 mm.
FIGURE 4 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 4. Dorsal (A), ventral (B), and lateral (C) views of body and dorsal (D), ventral (E), and lateral (F) views of head of the neotype of Hydrodynastes bicinctus (MPEG 24628) from municipality of Novo Progresso, state of Pará, Brazil. Scale = 10 mm.
FIGURE 6 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 6. Asulcate (A) and sulcate (B) views of the entirely expanded and completely filled hemipenis of Hydrodynastes bicinctus (MNRJ 4770). Scale = 5 mm.
FIGURE 3 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 3. Color in life of Hydrodynastes bicinctus: juvenile (A) from Juruena National Park, state of Mato Grosso, and adult (B) from municipality of Peixes, state of Tocantins, both in Brazil. Photos by P.S. Bernarde (A) and P.H. Bernardo (B).
FIGURE 2 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 2. Geographic distribution of Hydrodynastes bicinctus. Squares represent data from the literature and circles material examined.
FIGURE 1 in Taxonomic status and morphological variation of Hydrodynastes bicinctus (Hermann, 1804) (Serpentes: Dipsadidae)
FIGURE 1. Color pattern variables observed in Hydrodynastes bicinctus. Lateral view of head, showing shape of the postocular stripe—continuous "C" shaped directed to gular region (A), and as small black postocular dot not connected to "C" shaped stripe directed to gular region (B). Lateral view of the body, showing degree of definition of lateral blotches positioned between dorsal blotches on the paraventral region—conspicuous (C), and inconspicuous (D). Ventral view of body showing color pattern—checkered pattern (E) or with a set of dots reaching the lateral portion of the body (F).
Supplementary material 2 from: Wang N, Huang H, Ma L-B (2022) The intraspecific variation of morphology and coloration of field crickets: a taxonomic revision of Chinese Gymnogryllus Saussure, 1877 and Phonarellus Gorochov, 1983 (Orthoptera, Gryllidae, Gryllini). ZooKeys 1129: 85-107. https://doi.org/10.3897/zookeys.1129.87706
The area to total area ratio of the black area of the posterior femora of 42 specimens of the P. minor
Supplementary material 1 from: Wang N, Huang H, Ma L-B (2022) The intraspecific variation of morphology and coloration of field crickets: a taxonomic revision of Chinese Gymnogryllus Saussure, 1877 and Phonarellus Gorochov, 1983 (Orthoptera, Gryllidae, Gryllini). ZooKeys 1129: 85-107. https://doi.org/10.3897/zookeys.1129.87706
The distance between the first and second oblique veins at the base varies of 42 specimens of the P. minor
Patterns of morphological variation highlight the effect of natural selection on eyespots modularity in the butterfly Morpho telemachus - Dataset
<p>Morphological correlations can stem from developmental constraints but also from selective pressures. Butterfly eyespots are repeated wing color pattern elements, widespread across species. As developmental serial homologues, they are controlled by similar developmental pathways imposing correlations among eyespots: selection on a single eyespot may induce correlated responses in all eyespots. We study the variations in the ventral eyespots of <em>Morpho</em> <em>telemachus</em>, where two different selective regimes are likely to act: while most eyespots are always-visible, two eyespots are conditionally-displayed: hidden at rest, they can be exposed when the butterflies are threatened, or during sexual interactions. We investigate how such contrasted selection across eyespots can alter the covariations imposed by their shared developmental origin. We quantified eyespots' co-variations within a large population of <em>M</em>. <em>telemachus</em> and compared the observed patterns to those found in <em>M</em>. <em>helenor</em>, where all eyespots are always-visible and thus probably affected by a similar selection regime. We found that <em>M</em>. <em>telemachus</em> conditionally-displayed eyespots are less variable than always-visible eyespots and that these two eyespots form a separate variational module in this species, in contrast to <em>M</em>. <em>helenor</em>. Our results suggest that eyespots' covariations were shaped by selection, highlighting how natural selection may promote the evolution of modularity.</p>
FIGURE 7 in Morphological and phylogenetic studies of Agaricus bresadolanus, Agaricus infidus (nom. inval.) and Agaricus romagnesii (Agaricaceae) reveal their conspecificity and variation in toxicity of this taxon
FIGURE 7. Microscopical elements at the lamellae edge. A: LAPAG 680; B: KW-M 71176; C: LAPAG 333 (marked with an asterisk, rostrate cheilocystidia with a long filiform appendix at the apex); D: LAPAG 1084; E: TO-AV180518; F: LAPAG 471; G: LAPAG 201; H: LAPAG 1023. Scale bars = 10 μm. Photos by L. A. Parra.
FIGURE 6. Spores. A in Morphological and phylogenetic studies of Agaricus bresadolanus, Agaricus infidus (nom. inval.) and Agaricus romagnesii (Agaricaceae) reveal their conspecificity and variation in toxicity of this taxon
FIGURE 6. Spores. A: LAPAG 680 (authentic material of A. bresadolanus). B: KW-M 71174 (holotype of A. romagnesii). C: LAPAG 1084. D: LAPAG 516. E: TO-AV180518. F: Spores depicted by Alessio in original publication of "Psalliota infida". G: LAPAG 389. H: LAPAG 609 (duplicate of "A. alessii" 881204.A.377). Scale bars = 10 μm. Photos by L. A. Parra.
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Annotated Behaviour and Observability Dataset (ABODe)
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