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30 results for “Phragmatopoma”
Figures 28-40 in Oogenesis in Phragmatopoma (Polychaeta: Sabellariidae): Evidence for morphological distinction among geographically remote populations
Figures 28-40. Ultrastructure in Phragmatopoma caudata of the SW Atlantic. Growth Phase. Figure 28 Oocyte during late vitellogenesis filled with yolk granules (Y) and lipid droplets (Li). Note the cytoplasmic patches where the annulate lamellae (Al) are located and the welldeveloped egg envelope (Eg) (810x). Figure 29 Ripe oocytes occupy the entire coelomic cavity toward the body wall (810x). MC = muscle; Ep = epidermis. Figure 30 General view of the annulate lamellae (Al) between yolk granules and lipid droplets (560X). Figures 31-33 The annulate lamellae are composed by fenestrated endomembranes (arrows) parallel to each other arranged (Figure 31, 2,900X. Figure 32, 10,500X. Figure 33, 3,100X). Figure 34 Mature yolk granules with an elliptical shape (Y) showing a medullar crystalline substructure (white arrow) and non-crystalline cortex with electron-lucent spheres (black arrow) (13500X). Figure 35 Crystallised medullar in a parallel arrangement (white arrow) and a cortical lucid sphere (black arrow) (43,000X). Figure 36 Yolk granules (Y) and lipid droplets (Li) in the cytoplasm, with the presence of glycogen granules (arrow) close to the droplets (13,500X). M = mitochondria. Figure 37 Details of yolk granules delimited by the membrane (arrow) next to a lipid droplet (Li) and glycogen (Gly) (61000X). Figure 38 Cortical cytoplasm filled with yolk granules (Y), lipid droplets (Li) and cortical granules (CG) below the plasma membrane. Notice the thick egg envelope (Eg) (2,050X). Figure 39 The perivitelline space (1) is narrow and the egg envelope (Eg) is composed of two layers (2 and 3) with different electron-densities. The winding microvilli (Mv) are completely immersed in the egg envelope. Only the apical surface of the microvilli is in contact with the coelomic cavity (arrow) (5,400X). CG = cortical granules. Figure 40 Microvilli apex showing the expansion bears extensive filamentous adornment with an electron-dense centre (31,000X).
Figures 22-27 in Oogenesis in Phragmatopoma (Polychaeta: Sabellariidae): Evidence for morphological distinction among geographically remote populations
Figures 22-27. Ultrastructure in Phragmatopoma caudata of the SW Atlantic. Grow Phase. Figure 22 Oocyte during early vitellogenesis (Ev) with attributes of several yolk granules (Y) and lipid droplets (Li) in the cytoplasm, adjacent to an oocyte in late vitellogenesis (Lv) which vitelline envelope (Eg) thick (1,450X). N = nucleus, arrow = clumps of heterochromatin. Figure 23 Nucleus showing the heterochromatin clumps (large white arrow) and many complex pores in the nuclear envelope (small white arrows). The perinuclear cytoplasm aspect of granular material accumulations, juxtaposed with the nuclear envelope (black arrow) and next to mitochondria (M) (2,050X). Figure 24 Small and rounded yolk granules (Y) with different electron-densities and lucid spheres are observed inside. Besides Vesicles containing some electron-dense material (white arrow) also have lucid spheres (black arrow) and resemble nascent yolk granules (8,200X). Figure 25 Yolk granules (Y) of oocytes at the beginning of vitellogenesis showing varied electron-densities (black arrow) and electron-lucent spheres (large white arrow). Glycogen is also noticed (small white arrow) (21,500X). Figure 26 Cortical cytoplasm showing Golgi complexes (GC) close to the cortical granules (CG), which are filled with a fibrous material (black arrow). Note the large amount of glycogen (Gly) in the cytoplasm (1,150X). White arrow = glycogen. Figure 27 Microvilli (Mv) are larger and the egg envelope (Eg) thicker (2), relative to the previous stage. The perivitelline space (1) appears thinner (1500X).
Figures 15-21 in Oogenesis in Phragmatopoma (Polychaeta: Sabellariidae): Evidence for morphological distinction among geographically remote populations
Figures 15-21. Ultrastructure in Phragmatopoma caudata of the SW Atlantic. Grow Phase. Figures 15 and 16 Previtellogenic oocyte with a large nucleus (N) and nucleolus (Nu), as well as small rough heterochromatin clumps (small arrow). The cytoplasm is filled with rough, lamellar endoplasmic reticulum (RER) and noticeable mitochondria (M) in the perinuclear cytoplasm. The elongated portions of these cells create adhesion with adjacent oocyte (large arrow) (Figure 15, 2,050X. Figure 16, 4,200X). Oc = oocyte. Figure 17 Cytoplasm showing glycogen α (Gly) greater than the ribosomes (white arrows) attached to the reticulum (black arrow) (13,500X). M = mitochondria. Figures 18 and 19 Cortical cytoplasm of the rounded surface, showing Golgi complexes (GC) close to the cortical granules (CG), positioned beneath the microvilli (Mv) with the expansion bearing extensive filamentous adornment above the vitelline envelope (Eg) (Figure 18, 10,500x. Figure 19, 5,400X). Figures 20 and 21 Plasma membrane on a rounded surface showing endocytic depressions (black arrow) and coated vesicles (Cv). The vitelline envelope is composed by means of medium-apical extracellular matrix (2) in relation to microvilli (Mv). The basal region is electron-lucent and forming the beginnings of the perivitelline space (1) (Figure 20. 13,500X. Figure 21, 28,000X). GC = Golgi complexes, Eg = vitelline envelope.
Figures 10–14 in Oogenesis in Phragmatopoma (Polychaeta: Sabellariidae): Evidence for morphological distinction among geographically remote populations
Figures 10–14. Ultrastructure in Phragmatopoma caudata of the SW Atlantic. Proliferative Phase. Figures 10 and 11 Oogonia (Oo) and oocytes (Oc) connected via cellular prolongations (white arrow) to the endothelium of the intersegmental blood vessel (Bv). Note that the contact of ovary basal lamina is quite electron dense (black arrow). Desmosomes (D) form the oocyte-oocyte junction (Figure 10, 1,150X; Figure 11, 2,050X). M = mitochondria; Ch = chromosome. Figure 12 Oogonia with mitotic chromosomes (Ch) and oocytes in prophase with finely granular chromatin and chromosomes united by synaptonemal complexes (arrows) (2,400X). Figure 13 Synaptonemal complex (33,600X). N = nucleus. Figure 14 Narrow cytoplasm in oogonia (Oo) androunded nucleus. Oocyte (Oc) with wide cytoplasm and adhesion via desmosomes (D) (2,050X).
Figures 1–9 in Oogenesis in Phragmatopoma (Polychaeta: Sabellariidae): Evidence for morphological distinction among geographically remote populations
Figures 1–9. Histology and Histochemistry in Phragmatopoma caudata of the SW Atlantic. Figures 1 and 2 Oogonia (Oo) and previtellogenic oocytes (Pv) of early vitellogenesis (Ev) associated with the intersegmental blood vessels (BV) for cytoplasmic prolongations (black star). Oocytes in advanced and late vitellogenesis are released into the coelomic cavity (white star). Oocytes in vitellogenesis have intensely acidophilic granules, and the ripe oocytes are less acidophilus (black arrows). Figure 2 depicts oocytes in late vitellogenesis occupying the entire coelom with a basophils vitelline envelope (white arrow). N = nucleus; H&E staining. Scales = 20 μm. Figures 3 and 4 Techniques used to visualize basic and total proteins, respectively. The previtellogenic and vitellogenesis (Ev) oocytes (Pv) have intense granules (large black arrow), and the ripe in late vitellogenesis (Lv) are less reactive (white arrow). The vitelline envelope is reactive to protein (small arrow). Scales = 20 μm. Figure 5 Technique for visualizing neutral polysaccharides with positive staining in both the previtellogenic oocyte cytoplasm and the vitellogenic oocyte granules. The reactivity disappears in the vitellogenic granules of ripe oocytes, but surrounding these is a noticeable positive staining (large black arrow). Star = oogonia with little reactivity to neutral polysaccharides. The egg envelope is reactive to PAS (small arrow). Scale = 20 μm. Figures 6 and 7 Absence of acid polysaccharides (pH 1.0 and 2.5), respectively, in oogonia and oocytes in P. caudata. Scales = 20 μm. Figures 8 and 9 Lipids stained by Sudan Black B. The oogonia are uniformly positive (small white arrow), while the oocytes during previtellogenesis and vitellogenesis have droplets in the cytoplasm (large black arrow). The yolk granules are reactive during vitellogenesis, while the staining is less intensive (large white arrows) in the mature oocytes. The vitelline envelopes have lipids (small black arrow). Scales = 20 μm.
Figure 1 in Macrocrustaceans associated with reefs of Phragmatopoma caudata Krøyer in Mörch, 1863 (Polychaeta: Sabellariidae) and rocky shore in the Northeastern Brazil
Figure 1. Study area and collection of macrocrustaceans in colonies of Phragmatopoma caudata KrØyer in Mörch (highlighted by the white square) and rocky shore in the intertidal region of Santa Rita beach, Northeast Brazil.
Figure 4 in Macrocrustaceans associated with reefs of Phragmatopoma caudata Krøyer in Mörch, 1863 (Polychaeta: Sabellariidae) and rocky shore in the Northeastern Brazil
Figure 4. Complex microhabitat in Phragmatopoma caudata KrØyer in Mörch (A, B) and heterogeneous microhabitat in the rocky shore (C), in the intertidal region of Santa Rita beach, Northeast Brazil.
Figure 3 in Macrocrustaceans associated with reefs of Phragmatopoma caudata Krøyer in Mörch, 1863 (Polychaeta: Sabellariidae) and rocky shore in the Northeastern Brazil
Figure 3. Redundancy Analysis triplot (RDA) addressing association of macrocrustacean species according to environmental variables (TEMP: Temperature; SAL: Salinity) on microhabitats: Phragmatopoma caudata KrØyer in Mörch and rocky shore, in Santa Rita beach, Northeast Brazil. Biotic variables: A_ang: Alpheus angulosus, A_bou: Alpheus bouvieri, A_buc: Alpheus buckupi, A_for: Alpheus formosus, A_nut: Alpheus nuttingi, S_fri: Synalpheus fritzmuelleri, C_tib: Calcinus tibicen, C_ant: Clibanarius antillensis, E_bit: Epialtus bituberculatus, M_lae: Macrocoeloma laevigatum, E_gon: Eriphia gonagra, N_bre: Neogonodactylus bredini, P_tra: Pachygrapsus transversus, M_nod: Menippe nodifrons, O_bic: Omalacantha bicornuta, M_for: Mithraculus forceps, M_ hem: Mithrax hemphilli, M_his: Mithrax hispidus, P_lhe: Pitho lherminieri, P_nor: Palaemon northropi, A_ber: Acantholobulus bermudensis, A_sch: Acantholobulus schmitti, E_lim: Eurytium limosum, H_pau: Hexapanopeus paulensis, P_occ: Panopeus occidentalis, P_das: Pilumnus dasypodus, P_ret: Pilumnus reticulatus, P_dep: Plagusia depressa, C_mar: Callinectes marginatus, M_ros: Megalobrachium roseum, P_gre: Pachycheles greeleyi, P_arm: Petrolisthesarmatus, P_gal: Petrolisthesgalathinus, P_bra:Pisidiabrasiliensis, U_nor: Upogebia noronhensis, U_omi: Upogebia omissa, P_spe: Platypodiella spectabilis, W_den: Williamstimpsonia denticulatus.
Figure 2 in Macrocrustaceans associated with reefs of Phragmatopoma caudata Krøyer in Mörch, 1863 (Polychaeta: Sabellariidae) and rocky shore in the Northeastern Brazil
Figure 2. Heatmap estimated by relative abundance of macrocrustacean species in relation to both microhabitats: Phragmatopoma caudata KrØyer in Mörch (PC) and rocky shore (RS), in Santa Rita beach, Northeast Brazil.
Santa Barbara Coastal site, station Arroyo Burro Reef, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Arroyo Hondo Reef, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Arroyo Quemado Reef, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Bulito Reef, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Carpinteria Reef, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Goleta Bay, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
Santa Barbara Coastal site, station Mohawk Reef, Santa Barbara Channel, study of animal cover of Phragmatopoma californica in units of percent on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Barbara Coastal (SBC) contains animal cover of Phragmatopoma californica measurements in percent units and were aggregated to a yearly timescale.
FIGURE 13 in New species and new records of Phragmatopoma (Polychaeta: Sabellariidae) from Tropical America
FIGURE 13. Historical and new records of Phragmatopoma species. Empty symbols indicate previous records.
FIGURE 10. Phragmatopoma villalobosi n in New species and new records of Phragmatopoma (Polychaeta: Sabellariidae) from Tropical America
FIGURE 10. Phragmatopoma villalobosi n. sp. A, Complete body, dorsal view. B, Opercular crown, top view. C, Median ridge. D, Outer paleae. Middle paleae: E, Dorsal; F, Ventral. G, Inner paleae. H, Parathoracic lanceolate neurochaetae. I, Abdominal uncini. J, Opercular crown without middle paleae with ridge. Scale bars: A: 1 mm; B: 400 μm; C–D: 100 μm; E–G: 200 μm; H: 50 μm; I: 5 μm; J: 300 μm. Abbreviation: pc, peduncle caudal; pl, median plume; ri, ridge; op, outer paleae; mp, middle paleae.
FIGURE 5. Phragmatopoma digitata Rioja, 1962. A in New species and new records of Phragmatopoma (Polychaeta: Sabellariidae) from Tropical America
FIGURE 5. Phragmatopoma digitata Rioja, 1962. A, Complete body, dorsal view. B, Opercular crown, top view. C, Operculum, lateral view. D, Median ridge. E, Outer paleae. F, Details of median plume. G, Middle paleae. H, Inner paleae. I, Parathoracic lanceolate and capillary notochaetae. J, Parathoracic lanceolate neurochaetae. K, Abdominal uncini. L, Outer paleae of juvenile specimen. Scale bars: A: 1.5 mm; B: 1 mm; C, D: 0.5 mm; E: 100 μm; F: 20 μm; G–H: 150 μm; I–J, L: 50 μm; K: 10 μm. Abbreviation: op, outer paleae; mp, middle paleae; pa, papillae; mr, median ridge; pl, median plume; lt, lateral teeth.
FIGURE 12 in New species and new records of Phragmatopoma (Polychaeta: Sabellariidae) from Tropical America
FIGURE 12. Morphology of tubes. A, Phragmatopoma caudata. B, P. digitata. C, P. carlosi n. sp. Tubes of P. balbinae n. sp. with: D, Bryozoans; E, Serpulids and F, Syllids associated. Scale bars: A–B, D: 1 mm; C: 2 mm; E: 500 μm; F: 300 μm.
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