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39 results for “Namalycastis”
Figure 4. A-B in Incipient speciation within the Namalycastis abiuma (Annelida: Nereididae) species group from southern India revealed by combined morphological and molecular data
Figure 4. A-B shows the two equally parsimonious trees recovered from the phylogenetic analysis based on the COI dataset (length: 153, CI: 0.896, RI: 0.935). Specimens pertaining to the N. abiuma species group are indicated in bold font, and morphotype (M1-M6) and haplotype (H1- H4) numbers, as referred to in text, are denoted. Bootstrap support values above 50% are shown at each node. Branch lengths are drawn proportional to change.
Figure 1 in Incipient speciation within the Namalycastis abiuma (Annelida: Nereididae) species group from southern India revealed by combined morphological and molecular data
Figure 1. Map of the collection localities for the specimens of the Namalycastis abiuma species group.
Figure 3 in Incipient speciation within the Namalycastis abiuma (Annelida: Nereididae) species group from southern India revealed by combined morphological and molecular data
Figure 3. Neighbour joining tree derived from the COI dataset. Specimens pertaining to the N. abiuma species group are indicated in bold font, and morphotype (M1-M6) and haplotype (H1-H4) numbers, as referred to in text, are denoted by the brackets
Figure 2 in Incipient speciation within the Namalycastis abiuma (Annelida: Nereididae) species group from southern India revealed by combined morphological and molecular data
Figure 2. Selected morphological characters of the various N. abiuma species group morphotypes (M1-M6). A, M1, jaws with 11 teeth; B, M3, jaws with 10 teeth; C, M2, jaws with 9 teeth; D, M5 and M6 jaws with 8 teeth; E, M5, specimen with eyes absent; F, specimen with merged eyes; G-H, M5, specimens with three eyes; I, M5, specimen with faded eyes; J, M4, specimen with the longer tentacular cirri, indicative of species group 2 (see text); K, M4, specimen with relatively wider parapodium; L-M, M6, specimens showing three acicula; N, multi-incised pygidium.
FIGURE 2. Namalycastis occulta n in Namalycastis occulta n. sp. and a new record of N. borealis (Polychaeta: Nereididae: Namanereidinae) from the Northwestern Caribbean Sea
FIGURE 2. Namalycastis occulta n. sp. A. Entire, incomplete specimen, dorsal view, arrow indicates first oocyte. B. Oocytes from posterior chaetigers. C. Chaetiger from mid body, cross-ection (in: intestine, oc: oocyte). A, from specimen ECOSUR P- 2650; B–C, from specimen ECOSUR P-2650. Scale bars: A, 0.5 mm; B,C, 0.1 mm.
FIGURE 3. Namalycastis borealis Glasby, 1999. A. Anterior end, dorsal view. B. Posterior end, dorsal view. C. Chaetiger 3, frontal view. D. Chaetiger 32, frontal view. E. Chaetiger 47, frontal view. F. Jaw, dorsal view. G in Namalycastis occulta n. sp. and a new record of N. borealis (Polychaeta: Nereididae: Namanereidinae) from the Northwestern Caribbean Sea
FIGURE 3. Namalycastis borealis Glasby, 1999. A. Anterior end, dorsal view. B. Posterior end, dorsal view. C. Chaetiger 3, frontal view. D. Chaetiger 32, frontal view. E. Chaetiger 47, frontal view. F. Jaw, dorsal view. G. Supra-acicular heterogomph falciger, chaetiger 47. H. Sub-acicular heterogomph falciger, chaetiger 47. I. Sub-acicular heterogomph spiniger, chaetiger 47. J. Supra-acicular sesquigomph spiniger, chaetiger 47. A, C–J. from specimen ECOSUR P-0000; B. from specimen ECOSUR P-0000. Scale bars: A, B, 0.5 mm; C, D, E, F, 0.15 mm; G, H, I, J, 0.01 mm.
FIGURE 1. Namalycastis occulta n in Namalycastis occulta n. sp. and a new record of N. borealis (Polychaeta: Nereididae: Namanereidinae) from the Northwestern Caribbean Sea
FIGURE 1. Namalycastis occulta n. sp. A. Anterior end, dorsal view (insert: close-up of antennae). B. Posterior end, dorsal view. C. Jaw, dorsal view (insert: tip of jaw, frontal view). D. Chaetiger 3, right parapodium, frontal view. E. Chaetiger 36, right parapodium, frontal view. F. Chaetiger 88, right parapodium, frontal view. G. Supra-acicular heterogomph falciger, chaetiger 36. H. Sub-acicular heterogomph falciger, chaetiger 36. I. Sub-acicular heterogomph falciger, chaetiger 3 (insert: distal tip). J. Sub-acicular heterogomph spiniger, chaetiger 36 (insert: blade tip). K. Supra-acicular sesquigomph spiniger, chaetiger 36. A– B, D–K. from holotype ECOSUR P-0151; C. from paratype ECOSUR P-0152. Scale bars: A, B, 0.25 mm; C,D,E,F, 0.05 mm; G,H, I, J, K, 0.01 mm.
FIGURE 4 in Description of a new species of Namalycastis (Annelida: Nereididae: Namanereidinae) from the Brazilian coast with a phylogeny of the genus
FIGURE 4. Majority-rule consensus tree (50%). Values above branches are group frequencies. Bootstrap support values are given below the branches (only values above 50 are given).
FIGURE 3 in Description of a new species of Namalycastis (Annelida: Nereididae: Namanereidinae) from the Brazilian coast with a phylogeny of the genus
FIGURE 3. One of most parsimonious trees chosen at random, showing node numbers for the list of apomorphies.
FIGURE 2 in Description of a new species of Namalycastis (Annelida: Nereididae: Namanereidinae) from the Brazilian coast with a phylogeny of the genus
FIGURE 2. Scanning Electronic Microscopy (A) to (D) clockwise. (A) Anterior end, dorsal view. (B) Different blade size between a falciger and an elongated falciger (Inset: the distal tip of the elongated falciger). (C) Position in parapodia of falcigers and elongated falcigers. Note that the two chaetae arise from different fascicles. (D) Posterior end, dorsal view, pygidium and pygidial cirri. Elo-F, Elongated falciger; Falc, Falciger.
FIGURE 1 in Description of a new species of Namalycastis (Annelida: Nereididae: Namanereidinae) from the Brazilian coast with a phylogeny of the genus
FIGURE 1. Namalycastis caetensis sp. nov. (A) Anterior end, dorsal view (slightly indistinct tentacular cirri not represented). (B) Parapodia from chaetiger 10, anterior view. (C) Parapodia from chaetiger 90, anterior view. (D) Preacicular falciger from chaetiger 10. (E) Postacicular spiniger from chaetiger 10. (F) Postacicular elongated falciger from chaetiger 10. (G) Posterior end, dorsal view, pygidium and pygidial cirri.
Figure 24 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 24. Seasonal change in average salinity and temperature at six sites in Setiu Wetlands, Terengganu, in Malaysia (a), rainfall amount recorded at Bukit Berangan, Setiu, based on data from CHIRPS (Funk et al. 2019) (b), during the sampling period from September 2015 to September 2016.
Figure 21 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 21. Seasonal change in size–frequency histogram of mean diameters of coelomic oocytes of Namalycastis sp. collected from six sites in Setiu Wetlands, Terengganu in Malaysia via seven samplings in the period from September 2015 to September 2016. n: number of females examined.
Figure 19 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 19. Seasonal change in mean body width of females, males, and individuals with sex unknown in pooled samples of Namalycastis sp. collected from six sites in Setiu Wetlands, Terengganu, in Malaysia via seven samplings in the period from September 2015 to September 2016.
Figure 16 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 16. Relationship between body width and body length of 277 complete specimens of Namalycastis sp. collected from September 2015 to September 2016 at six sites in Setiu Wetlands, Terengganu in Malaysia (Table 1).
Figure 7 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 7. Namalycastis sp., NSMT-Pol 113582 (4.2 mm BW, 200 mm BL) collected at Station 4 on 27 November 2015 (a, e, g); NSMT-Pol 113583 (2.5 mm BW, 250 mm BL) collected at Station 3 on 27 November 2015 (b–d); and UMT-Ann 1816 (2.6 mm BW, incomplete) collected from Station 2 on 27 November 2015 (f). (a) Sesquigomph spiniger in upper neurochaetae in posterior body. (b) Heterogomph spiniger with finely serrated blade in lower neurochaetae, chaetiger 5. (c) Heterogomph spinigers having blade with coarse serrations proximally in posterior body. (d) Heterogomph falciger with finely serrated blade, chaetiger 5. (e) Heterogomph falciger with finely serrated blade in posterior body. (f) Heterogomph falcigers having blade with coarse serrations proximally, chaetiger 200. (g) Heterogomph falcigers with finely serrated blade (f), and additional thin sesquigomph spinigers (epitokal chaetae) (ep) located at bottom position of lower neurochaetae in posterior body. Scale bars: a–e, g = 0.1 mm; f = 0.01 mm.
Figure 8 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 8. Percentage distribution of the number of sesquigomph spinigers in upper neurochaetae at chaetiger 35 in nine ranks of body size of Namalycastis sp. collected from Setiu Wetlands, Terengganu, Malaysia. A total of 229 specimens collected from six sites from September 2015 to September 2016 were examined. The number at the top of each bar is the number of individuals examined.
Figure 13 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 13. Perinereis aibuhitensis. (a) UMT-Ann 2191. Dorsal view of anterior end with everted proboscis. (b, c) NSMT-Pol 113581: (b) ventral view of anterior end with everted proboscis; (c) heterogomph falciger in upper neurochaetae, chaetiger 4. Scale bars: a, b = 1 mm; c = 0.01 mm.
Figure 4 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 4. Namalycastis sp., a specimen (UMT-Ann 1741; 4.1 mm BW, 180 mm BL) collected at Station 2 on 27 November 2015. (a) Whole body, dorsal view. (b) Anterior end, dorsal view. (c) Posterior end, dorsal view. (d) Pair of jaws, dorsal view. (e) Parapodium of chaetiger 10, posterior view. (f) Parapodium of chaetiger 65, posterior view. (g) Parapodium of chaetiger 93, posterior view. (h) Parapodium of chaetiger 111, posterior view. (i) Parapodium of chaetiger 142, posterior view. (j) Parapodium of chaetiger 166, posterior view. Scale bars: a = 5 mm; b, c = 1 mm; d–j = 1 mm.
Figure 1 in Nereidid polychaetes (Annelida) inhabiting the inside of decaying fronds of the mangrove palm Nypa fruticans in a tropical estuary in Malaysia, with special reference to the life history of the dominant species, Namalycastis sp.
Figure 1. Landscape of sampling sites in Setiu Wetlands, Terengganu, in Malaysia. (a) Mangrove trees of the palm Nypa fruticans, fringing a slender lagoon on 25 June 2015. (b) Collection of nereidid worms by tearing apart the decaying fronds of Nypa fruticans at Station 1 on 6 August 2015.
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