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1,925 results for “Platyhelminthes”
Figure 25 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 25. Geoplana boraceia Almeida & Carbayo sp. nov. A, dorsal view of the living specimen MZUSP PL 1086 (field number F4358), ~40 mm in length. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2077. C, photomicrograph of a sagittal section of penis papilla and female atrium of specimen MZUSP PL 2070. D, micro-computed tomography-based image of a transverse section of the penis papilla of specimen MZUSP PL 2095. Arrows point to muscle detached from the penis bulb running towards the ventral epidermis. Right body side to the right. E, micro-computed tomography-based image of a parasagittal section of the right side of penis bulb of specimen MZUSP PL 2095. Arrows point to muscles detached from the penis bulb running towards the ventral epidermis.
Figure 23 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 23. Geoplana pulchella Schultze & Müller, 1857. Photomicrographs of sagittal sections of specimen MZUSP PL 1068. A, fibres seemingly derived from penis bulb running downwards to ventral epidermis behind gonopore region. B, female genital duct and surrounding layer of very thin muscle fibres.
Figure 24. Geoplana chita Froehlich, 1956. A in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 24. Geoplana chita Froehlich, 1956. A, dorsal view of the live specimen MZUSP PL 716, underdeveloped. B, drawings of dorsum of anterior end (left) and mid-region in dorsal view (top, right) and in three-dimensional section (bottom, right) of the body of a type specimen from Paraná; drawings by E. M. Froehlich; scale bar not available. C, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 715. D, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2086. E, photomicrograph of part of the penis papilla of specimen MZUSP PL 2086 in sagittal section, showing the ejaculatory duct and its surrounding muscle. F, diagrammatic representation of the copulatory apparatus from sagittal sections of specimen MZUSP PL 2086.
Figure 22 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 22. Geoplana pulchella Schultze & Müller, 1857. A, dorsal view of the living specimen MZUSP PL 1068, 38 mm in length. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 1068. C, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2076. D, diagrammatic representation of the copulatory apparatus from sagittal sections of specimen MZUSP PL 2076.
Figure 21 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 21. Geoplana iporanga Almeida & Carbayo sp. nov. Sagittal views of copulatory apparatus of specimen MZUSP PL 2065. A, microphotograph. B, diagrammatic representation.
Figure 19 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 19. Geoplana cambara Almeida & Carbayo sp. nov. Photomicrographs of sagittal sections of specimen MZUSP PL 2062. A, mid-portion of penis papilla, with the ejaculatory duct and its surrounding muscle. B, dorsal epithelium of penis papilla and cyanophil glands located immediately beneath epithelium. C, female atrium. D, female genital duct; note layer of very thin muscle fibres surrounding the duct.
Figure 5 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 5. Geoplana vaginuloides (Darwin, 1844). A, photomicrograph of part of the penis papilla of specimen N574 on a sagittal section, showing the ejaculatory duct and its surrounding muscle. B, photomicrograph of the female genital duct of specimen MZUSP PL 2074 on a sagittal section.
Figure 16 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 16. Geoplana ibiuna Almeida & Carbayo sp. nov. A, dorsal view of the living specimen MZUSP PL 2081, 50 mm in length. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2081. C, photomicrograph of a sagittal section of the inner pharyngeal epithelium showing its three muscle layers (each indicated with an arrowhead) of specimen MZUSP PL 2066. D, diagrammatic representation of the copulatory apparatus of specimen MZUSP PL 2066 from sagittal sections. Arrowhead points to the sphincter embracing posterior portion of female atrium. E, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2066.
Figure 12 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 12. Geoplana paranapiacaba Almeida & Carbayo sp. nov. A, dorsal view of the 50-mm-long specimen MZUSP PL 2079, immediately after having been killed with boiling water. It was accidentally cut into two pieces at the moment of collection. B, photomicrograph of longitudinal and transverse muscles of the subintestinal parenchymatic layer in horizontal section of specimen MZUSP PL 2079. C, diagramatic reconstruction of half of a transverse section of the pre-pharyngeal region of the holotype; dots represent longitudinal parenchymatic muscle fibres. D, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2079. E, photomicrograph of dorsal epithelium of penis papilla and erythrophil glands located immediately beneath the epithelium of specimen MZUP PL 2079 in sagittal section.
Figure 8 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 8. Geoplana mogi sp. nov. A, dorsal view of the live specimen MZUSP PL 2061. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2089. C, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2089.
Figure 4 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 4. Geoplana vaginuloides (Darwin, 1844). Specimen MZUSP PL 2074. A, dorsal view of live specimen, ~60 mm in length. B, photomicrograph of longitudinal and transverse muscles of the subintestinal parenchymatic layer in a horizontal section. C, diagrammatic representation of the pharynx from sagittal sections. D, diagrammatic representation of the copulatory apparatus from sagittal sections.
Figure 1 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 1. Distribution map of the species of Geoplana addressed in this paper. Abbreviations for the Brazilian States are as follows: PR, Paraná; RJ, Rio de Janeiro; RS, Rio Grande do Sul; SC, Santa Catarina; SP, São Paulo.
Figure 15 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 15. Geoplana caraguatatuba Almeida & Carbayo sp. nov. Specimen MZUSP PL 2080. A, diagrammatic representation of the copulatory apparatus from sagittal sections. B, photomicrograph of a sagittal section of the copulatory apparatus. C, virtual sagittal section of the copulatory apparatus derived from the micro-computed tomography dataset. D, virtual transverse section derived from the micro-computed tomography dataset of the body at the level of the gonopore. E, photomicrograph of dorsal epithelium of penis papilla and cyanophil glands located immediately beneath epithelium in sagittal section.
Figure 7 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 7. Geoplana apua sp. nov. A, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2072. B, diagrammatic representation of the copulatory apparatus of specimen MZUSP PL 2072 from sagittal sections.
Figure 3 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 3. Phylogenetic hypotheses for species of Geoplana based on the simultaneous analysis of COI and EF-1-α partial sequences for all-terminals dataset using parsimony as the optimality criteria. Bases on branches represent unambiguous unique synapomorphies (black) and homoplastic synapomorphies (red) for the respective clades (numbers below bases indicate position of the transformations). Nucleotide positions 1–676 refer to COI, and 677–1225 refer to EF-1-α. Support values for selected nodes are above branches [Goodman–Bremer (GBS)/log-likelihood difference (LLD)]. Absence of values for LLD indicated that the node was not recovered by the maximum likelihood (ML) analyses. *Sequences were obtained for this study.>Species name updated with respect to GenBank. Pictures of specimens are at different scales.
Figure 2 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 2. Summary of sister-group relationships within Geoplaninae based on the simultaneous analysis of COI and EF-1-α partial sequences for all-terminals dataset using parsimony as the optimality criteria with 5469 steps in length. Support values for selected nodes are above branches [Goodman–Bremer (GBS)/log-likelihood difference (LLD)]. Absence of values for LLD indicated that the node was not recovered by the maximum likelihood (ML) analyses.
Figure 10 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 10. Geoplana piratininga sp. nov. A, dorsal view of the live specimen MZUSP PL 2060; anterior to the left, ~32 mm in length. B, photomicrograph of a sagittal section of the pharynx of specimen MZUSP PL 2071. C, photomicrograph of the three muscle layers of the internal musculature of the pharynx in sagittal section of specimen MZUSP PL 2071. D, photomicrograph of dorsal epithelium of penis papilla and erythrophil glands located immediately beneath the epithelium of specimen MZUP PL 2071 in sagittal section.
Figure 9 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 9. Geoplana mogi sp. nov. A, diagrammatic representation of the copulatory apparatus of the specimen MZUSP PL 2089 from sagittal sections. B, photomicrograph of the ejaculatory duct and its surrounding musculature of specimen MZUSP PL 2089 in sagittal section. C, photomicrograph of dorsal epithelium of penis papilla and erythrophil glands located immediately beneath epithelium of the unlabelled specimen studied by Marcus (1951) in sagittal section.
Figure 11 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 11. Geoplana piratininga sp. nov. A, photomicrograph of a sagittal section of the copulatory apparatus of specimen MZUSP PL 2071. B, diagrammatic representation of the copulatory apparatus of specimen MZUSP PL 2071 from sagittal sections.
Figure 20 in 'Endless forms most beautiful': taxonomic revision of the planarian Geoplana vaginuloides (Darwin, 1844) and discovery of numerous congeners (Platyhelminthes: Tricladida)
Figure 20. Geoplana iporanga Almeida & Carbayo sp. nov. Specimen MZUSP PL 2065. A, dorsal view of the live specimen, ~53 mm in length. B, photomicrograph of a sagittal section of the pharynx. C, mid-portion of penis papilla, with the ejaculatory duct and its surrounding muscle.
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