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294 results for “Nemertea”
Fig. 2 in A New Species of Bathyal Nemertean, Proamphiporus kaimeiae sp. nov., off Tohoku, Japan, and Molecular Systematics of the Genus (Nemertea: Monostilifera)
Fig. 2. Proamphiporus kaimeiae sp. nov., holotype, ICHUM 6058, photographs taken in living state. A, Whole body, dorsal view; B, ventral view. Abbreviations: cf, cephalic furrow; co, cerebral organ. Scale bar: 500 µm.
Fig. 1 in A New Species of Bathyal Nemertean, Proamphiporus kaimeiae sp. nov., off Tohoku, Japan, and Molecular Systematics of the Genus (Nemertea: Monostilifera)
Fig. 1. Map showing the collection site (solid circle) of the specimen examined in the present study.
Fig. 4 in A New Species of Bathyal Nemertean, Proamphiporus kaimeiae sp. nov., off Tohoku, Japan, and Molecular Systematics of the Genus (Nemertea: Monostilifera)
Fig. 4. Phylogenetic trees of the genus Proamphiporus based on concatenated 16S rRNA (454 bp), COI (657 bp), 18S rRNA (1773 bp), 28S rRNA (1077 bp), and histone H3 genes (326 bp). A, Phylogenetic tree inferred by maximum likelihood (ML) analysis, showing support values generated by a separate partitioned ML bootstrap analysis with 1000 replicates; B, phylogenetic tree inferred from Bayesian analysis, showing posterior probability of a separate partitioned Bayesian analysis.
Figure 5 in Checklist of the phyla Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (Tunicata, Cephalochordata,
Figure 5. The distribution of the number of Appendicularia (Tunicata) species along the coasts of Turkey. Each grid has a dimension of 15 × 15 km.
Figure 2 in Checklist of the phyla Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (Tunicata, Cephalochordata,
Figure 2. The number of species of the phyla Platyhelminthes (PLA), Chordata (Tunicata, Cephalochordata, and Hemichordata) (CHO), Nemertea (NEM), Nematoda (NMT), Xenacoelomorpha (XEN), Chaetognatha (CHA), Acanthocephala (ACA), and others (OTH, including Echiura, Myxozoa, Brachiopoda, Cephalorhyncha, Tardigrada, and Phoronida) along the coasts of Turkey. ∑S indicates the total number of species.
Linked collectors and determiners for: Colección de Gusanos Cinta (Nemertea) de la región de Santa Marta.
Natural history specimen data linked to collectors and determiners held within, "Colección de Gusanos Cinta (Nemertea) de la región de Santa Marta". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/003af977-4127-4405-91fb-1356d785db61">https://bionomia.net/dataset/003af977-4127-4405-91fb-1356d785db61</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/003af977-4127-4405-91fb-1356d785db61">https://gbif.org/dataset/003af977-4127-4405-91fb-1356d785db61</a>. Formatted as a Frictionless Data package.
Figure 2. Majority rule consensus tree for the 16S in Genus Baseodiscus (Nemertea: Heteronemertea): Molecular identification of a new species in a phylogenetic context
Figure 2. Majority rule consensus tree for the 16S rRNA data resulting from the Bayesian analysis (model GTR+G+I), 1,000,000 generations. Numbers refer to posterior probabilities.
Figure 1 in Genus Baseodiscus (Nemertea: Heteronemertea): Molecular identification of a new species in a phylogenetic context
Figure 1. Parsimony tree based on the 16S rRNA data with bootstrap support values from 5000 replicates (heuristic search, random additions, five replicates).
Figure 5. Carcinonemertes sebastianensis n in Three new species of Carcinonemertes (Nemertea, Carcinonemertidae) from the southeastern coast of Brazil
Figure 5. Carcinonemertes sebastianensis n. sp. (A) Egg strand (arrow) on Menippe nodifrons eggs. (B) Juvenile worms encysted (arrows) on the axis of the pleopod of Menippe nodifrons.
Figure 2. Carcinonemertes caissarum n in Three new species of Carcinonemertes (Nemertea, Carcinonemertidae) from the southeastern coast of Brazil
Figure 2. Carcinonemertes caissarum n. sp. (A) Filiform mucus sheath of adult worm; (B) male with rounded posterior end; (C) stylet and basis (arrow) in a male worm; (D) juvenile worm encysted on pleopod setae of Hepatus pudibundus.
Figure 4. Carcinonemertes sebastianensis n in Three new species of Carcinonemertes (Nemertea, Carcinonemertidae) from the southeastern coast of Brazil
Figure 4. Carcinonemertes sebastianensis n. sp. (A) Detail of lapilli of adult mucus sheath. (B) Rounded anterior end of female, showing the great distance from first gonad to tip of head. (C) Stylet and basis (arrow) in a female worm. (D) Anterior end of male. (E) Posterior end of male. Abbreviations: b, proboscis bulb; d, diaphragm; g, gonad.
Figure 1. Carcinonemertes divae n in Three new species of Carcinonemertes (Nemertea, Carcinonemertidae) from the southeastern coast of Brazil
Figure 1. Carcinonemertes divae n. sp. (A) Anterior end of female, (B) proboscis aligned in a straight line, (C) stylet and basis (arrow) in a female worm, (D) male with rounded anterior end, (E) pointed posterior end of male, with seminal vesicle, (F) adult female (arrow) on Libinia spinosa eggs. Abbreviations: b, proboscis bulb; d, diaphragm; p, posterior proboscis chamber.
Figure 3 in Three new species of Carcinonemertes (Nemertea, Carcinonemertidae) from the southeastern coast of Brazil
Figure 3. Scanning electron micrograph of the lapilli of the mucus sheath produced by the adults of Carcinonemertes sebastianensis n. sp.
Figure 3. Tubulanus riceae n in Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama
Figure 3. Tubulanus riceae n. sp. Approximately sagittal sections. Scale bar5100 mm. (A) Precerebral region of head. (B) Cerebral and post-cerebral region of head, contiguous from A. (C) Anterior of fixation band region (to right of vertical line). (D) Mid-point transition of fixation band, at third annulus (anterior is to left and posterior is to right of vertical line). Abbreviations: an, pigment annulus; dc, dorsal commissure; fg, foregut; fo, frontal organ; m, mouth opening; mc, basal mucoid cell bodies of pseudostratified epidermis; ne, nerve; pb, proboscis; pi, proboscis insertion; py, pylorus; rd, rhynchodeum; rdg, rhynchodeal glandular epithelium; rh, rhynchocoel; rp, rhynchopore; vg, ventral cerebral ganglion.
Figure 2. Tubulanus riceae n in Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama
Figure 2. Tubulanus riceae n. sp. transverse sections, except A, C, D, N. Scale bar lengths in parentheses. (A) Fixed anterior third of specimen; bracket denotes post-fixation staining band (1 mm). (B) Body wall; epidermis with variety of glandular cells (15 mm). (C) Sagittal section showing transverse musculature (star) passing between the epidermal mucus cells and the rhynchodeal glandular cells (rdg) (6 mm). (D) Sagittal section showing oblique (diagonal) musculature (oval) (6 mm). (E) Ventral ganglia (star) and ventral commissure (arrowhead) (12 mm). (F) Middle region of the cerebral sensory organ (star) (12 mm). (G) Putative ocellar pigment (oval) (12 mm). (H) Middle of lateral sensory organ (star), lateral blood vessel (lbv), lateral nerve cord (lnc) and inner circular muscle passing under foregut (arrow) (12 mm). (I) Testes (star) with mature sperm (12 mm). (J) Ovary with single maturing oocyte (14 mm). (K) Anterior of cephalic region, apical organ (oval) and epidermal brown pigment (star). (L) Anterior-most region of proboscis, proboscis nerves (star), subdorsal nerve (sd) and rhynchodeal nerve (circled) (6 mm). (M) SEM of surface of everted proboscis (5 mm). (N) Frontal section through right cerebral ganglion showing neurocord cell (oval) (20 mm). (O) Excretory duct (ed) (50 Mm). (P) Main nephridial tubule (upper part of oval) and cyrtocytes projecting into lateral blood vessel (lower part of oval) (50 Mm).
Figure 3 in Swedish nemerteans (phylum Nemertea), with description of a new hoplonemertean genus and species
Figure 3. Tetraneuronemertes lovgreni gen. et sp. n. External features of a complete specimen. Scale bar: 1 mm.
Figure 5 in Swedish nemerteans (phylum Nemertea), with description of a new hoplonemertean genus and species
Figure 5. Tetraneuronemertes lovgreni gen. et sp. n. Schematic camera lucida drawing of transverse section through the cerebral region to show the general arrangement of the various structures in this part of the body. DG, dorsal cerebral ganglionic lobe; EP, epidermis; LM, body wall longitudinal muscle layer; PR, proboscis; ST, stomach; VG, ventral cerebral ganglionic lobe; VP, vascular plug. Scale bar: 100 Mm.
Figure 4 in Swedish nemerteans (phylum Nemertea), with description of a new hoplonemertean genus and species
Figure 4. Tetraneuronemertes lovgreni gen. et sp. n. Schematic camera lucida drawing of transverse section through the stomach region to show the general arrangement of the various structures in this part of the body. CM, body wall circular muscle layer; DE, dermis; EP, epidermis; IC, intestinal caecum; LM, body wall longitudinal muscle layer; LN, main longitudinal nerve cord; PR, proboscis; ST, stomach; UN, upper (dorsolateral) longitudinal nerve. Scale bar: 100 Mm.
Figure 2 in Swedish nemerteans (phylum Nemertea), with description of a new hoplonemertean genus and species
Figure 2. Phylogeny of selected hoplonemertean taxa to show the position of the new species described here (in bold). Majority rule consensus tree from a Bayesian analysis based on 18S rDNA sequences. Numbers above branches refer to a posteriori probabilities. Outgroup species (Heteronemertea): Cerebratulus lacteus, Lineus bilineatus, Micrura fasciolata, Zygeupolia rubens.
Figure 17 in Character-matrix based descriptions of two new nemertean (Nemertea) species
Figure 17. Schematic representation of different flame cell types present in nemerteans. Abbreviations: CF, ciliary flame; FC, flame cell; LSB, longitudinal support bar; NTC, nucleus of terminal chamber; TSB, transverse support bar. (Redrawn after Coe, 1930).
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