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5 results for “Polygordius”
Figure 3 in Note on rare knot worm, Polygordius madrasensis Aiyar and Alikunhi, 1944 (Polychaeta, Polygordiidae) from India
Figure 3. Light microscopy image of neotype (MB/SBN/VD8) (pp: paired palps, hf: head fold, pr: prostomium, mo: mouth opening, pc: pygidial cirri, py: pygidium, s: segments, gc: gut content).
Figure 2 in Note on rare knot worm, Polygordius madrasensis Aiyar and Alikunhi, 1944 (Polychaeta, Polygordiidae) from India
Figure 2. SEM images of Polygordius madrasensis: A. Ventral view of prostomium showing head fold and paired palps; B. lateral view of posterior end/pygidium with cirri; C. posterior end showing pygidial glands; D. ventral view of prostomium showing mouth; E. light microscopy image of habitus (pp: paired palps, hf: head fold, pc: pygidial cirri, pg: pygidial glands, m: mouth, py: pygidium).
Figure 1 in Note on rare knot worm, Polygordius madrasensis Aiyar and Alikunhi, 1944 (Polychaeta, Polygordiidae) from India
Figure 1. Map showing records of Polygordius species from Indian waters.
Fig. 8 in Ultrastructural differences in presumed photoreceptive organs and molecular data as a means for species discrimination in Polygordius (Annelida, Protodriliformia, Polygordiidae)
Fig. 8 Phylogram of maximum likelihood analysis of cytochrome oxidase I (COI) dataset produced in MEGA5.1 based on T92 + G + I model. Analysis of COI sequences of individuals of P. lacteus from Helgoland (North Sea), Beg Meil and Roscoff (Brittany); P. erythrophthalmus from Beg Meil, and P. appendiculatus from Helgoland, Roscoff and Ischia (Mediterranean Sea); and 1 sequence of O. limacina from GenBank used as out-group. Values on nodes indicate support from 1000 bootstrap replicates (only those greater than 70 % shown). Branch lengths (>0.50) are shown below the branches and scale bar indicates substitutions per position. * = prostomial red eyespots observed thus initially identified as P. erythrophthalmus
Fig. 7 in Ultrastructural differences in presumed photoreceptive organs and molecular data as a means for species discrimination in Polygordius (Annelida, Protodriliformia, Polygordiidae)
Fig. 7 Differences in the distribution of receptor cells within most frequent sensory organs between P. lacteus and P. appendiculatus (TEM, crosssections). a–c Three different sensory organs in P. lacteus; cavities with numerous sensory microvilli emerging from rhabdomeric receptor cells. Sensory processes of type 3 cells (sc 3) are most frequent due to more than seven rhabdomeric receptor cells per organ (up to three apices visible in each organ). The ecm surrounds the photoreceptive region toward the body cavity. d–f Three different sensory organs in P. appendiculatus with processes of ciliary sensory cells, especially ciliary branches of type 1 sensory cells. Arrows in e indicate several sectioned unbranched cilia of type 2 sensory cells. Note that besides differences in dominance of sensory processes the sensory organs are all in all smaller compared to the organs in P. lacteus (indicated by scale bars). ecm extracellular matrix, sc 1, sc 3 sensory cell type 1, 3
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