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971 results for “Southwestern Atlantic”
FIGURE 1 in A new Fenestrulina (Bryozoa, Cheilostomata) commensal with tube-dwelling anemones (Cnidaria, Ceriantharia) in the tropical southwestern Atlantic
FIGURE 1. Map with Brazilian states in the Tropical Southwestern Atlantic biogeographic province (in white) with the sampling area indicated (triangle).
FIGURE 8. A–C in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 8. A–C, Teramnonotus gordonae (Monod, 1956) n. gen., n. comb. A, ovigerous female holotype cl. 3.1 mm, cw. 2.6 mm (MNHN-B25803). B–C, ovigerous female paratype cl. 2.4 mm, cw. 2.2 mm (MNHN-B25802) (after Monod 1956: figs. 634 and 636). D–F, Teramnonotus johnlucasi n. gen., n. sp., ovigerous female paratype cl. 2.5 mm, cw. 2.4 mm (MZUSP 32909). G–I, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype cl. 4.3 mm, cw. 3.6 mm (MZUSP 10273). A, D, G, right cheliped, lateral view. B, E, H, right P2, lateral view. C, F, I, left P5, lateral view. Scales: 1 mm.
FIGURE 6. A–C in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 6. A–C, lateroanterior view of carapace. D, F, posterior view of the cephalothorax and abdomen. E, posterodorsal view of cephalothorax. A, Teramnonotus johnlucasi n. gen., n. sp., ovigerous female holotype cl. 2.8 mm, cw. 2.7 mm (AM P.12208). B, D, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype cl. 4.3 mm, cw. 3.6 mm (MZUSP 10273). C, F, Elamena mathoei (Desmarest, 1823), female (ZRC 1994.4235). E, Trigonoplax unguiformis H. Milne Edwards, 1853, female (RMNH). Arrows indicate the absence of the rostral keel in A–B (distinct vertical keel on ventral surface of rostrum in C). Ab1, Ab2, first and second abdominal somites. CxP5, coxa of the pereopod 5. St 8, thoracic sternite 8 exposed. Scales: A–D, 1 mm. E–F, 2mm.
FIGURE 7. A, C in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 7. A, C. Female abdominal somites and pleotelson, dorsal view. A, B, Teramnonotus johnlucasi n. gen., n. sp., ovigerous female holotype cl. 2.8 mm, cw. 2.7 mm (AM P.12208). C, D, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype cl. 4.3 mm, cw. 3.6 mm (MZUSP 10273). Ab1, Ab2, first and second abdominal somites. Ab3–Ab5, third, fourth and fifth abdominal somites fused together. PlT, pleotelson (sixth abdominal somite and telson fused together). Scales: A–D, 1 mm.
FIGURE 5. A–D in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 5. A–D, anteroventral view of the cephalothorax. A, Teramnonotus gordonae (Monod, 1956) n. gen., n. comb., holotype (after Monod 1956: fig. 630 bis). B, Teramnonotus johnlucasi n. gen., n. sp., ovigerous female holotype cl. 2.8 mm, cw. 2.7 mm (AM P.12208). C, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype cl. 4.3 mm, cw. 3.6 mm (MZUSP 10273). D, Elamena mathoei (Desmarest, 1823), female (ZRC 1994.4235). Arrows indicate the rostrum, which is integrated into the carapace outline in B (rostrum well detached from the carapace outline in C). Scales: A–D, 1 mm.
FIGURE 2. A–D in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 2. A–D, habitus, dorsal and ventral views. A, B, Elamena mathoei (Desmarest, 1823), female (ZRC 1994.4235). C, D, Trigonoplax unguiformis H. Milne Edwards, 1853, female (RMNH). Note (arrows) part of the thoracic pleurite 8 visible between the carapace, the abdominal somites 1–2, and the coxa of P5 in A and C. A–D, stained with methylene blue. Scales: A, B, 1 mm; C, D, 2 mm.
FIGURE 4. A–D in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 4. A–D, habitus, dorsal view. A, Teramnonotus gordonae (Monod, 1956) n. gen., n. comb., holotype (after Monod 1956: fig. 629). B, Teramnonotus johnlucasi n. gen., n. sp., ovigerous female holotype cl. 2.8 mm, cw. 2.7 mm (AM P.12208). C, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype cl. 4.3 mm, cw. 3.6 mm (MZUSP 10273). D, Elamena mathoei (Desmarest, 1823), female (ZRC 1994.4235). Scales: A–D, 1 mm.
FIGURE 1. A–D in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 1. A–D, habitus, dorsal and ventral views. A, B, Teramnonotus johnlucasi n. gen., n. sp., ovigerous female holotype cl. 2.8 mm, cw. 2.7 mm (AM P.12208). C, D, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype cl. 4.3 mm, cw. 3.6 mm (MZUSP 10273). Note (arrows) rostrum integrated into the carapace outline in A (versus rostrum well detached from the carapace outline in C). A–D, stained with methylene blue. Scale bars: A–D, 1 mm.
FIGURE 3. A, Teramnonotus monodi n. gen., n in A new genus and two new species of hymenosomatid crabs (Crustacea: Brachyura: Hymenosomatidae) from the southwestern Atlantic and eastern Australia
FIGURE 3. A, Teramnonotus monodi n. gen., n. sp., ovigerous female paratype (ZRC). B, ovigerous female holotype of Elamena mexicana H. Milne Edwards, 1853, (MNHN-B655, currently MNHN-IU-2000-655), a junior synonym of Halicarcinus planatus (Fabricius, 1775). Photographs by A. Anker and T. Naruse, respectively. Scale: A, 5 mm.
FIGURE 6 in Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27 S) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
FIGURE 6. Lysmata ankeri Rhyne & Lin, 2006. (A) Lateral view with natural colour pattern; (B) dorsal view with natural posture and colour pattern; (C) close-up of carapace lateral view highlighting proportions and features of rostrum, carapace and antennular segments; (D) close-up of carapace dorsal view highlighting the spines in carapace and the proportion of rostrum, antennular peduncle and antennular scale; (E) alive animals in cavities, highlighting the bright neon V shape observed in field; (F) left second pereiopod with 36 segments on carpus. Scale bars: a,b 1cm; c,d,e 5 mm.
FIGURE 5 in Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27 S) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
FIGURE 5. Alpheus cf. packardii Kingsley, 1880 with absent fourth pereiopod. (A) Superior view, alive animal with natural posture and colour pattern; (B) lateral view with natural posture and colour pattern; (C) close-up of lateral view highlighting the presence of rostrum, the absence of orbital teeth and the proportion of proximal antennal and antennular segments; (D) white spiniform setae of the lateral branch of uropod; (E) superior view of carapace highlighting the rostrum, the absence of teeths on orbital hoods and the adrostral depressions mesially in orbital hoods; (F) minor first chela with balaeniceps setae; (G) major first chela notched dorsally and not notched ventrally; (H) merus of third and fourth pereiopods without prominent tooth on distal end. Scale bars: a–b 5mm; c–h 1mm.
FIGURE 3. Stenopus spinosus Risso, 1827 in Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27 S) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
FIGURE 3. Stenopus spinosus Risso, 1827 without large right chelipod. (A) Three first chelated pereiopods pair of left side (B) superior view, alive animal with natural posture and colour pattern (C) lateral view, details of rostrum, antenular peduncleand scale (D) telson and uropods highlighting the colour patters, (E) telson highlighting the lateral spine (F) abdomen with spines highlighting the third and fourth pleonal somite, (G, H) antennal scales highlighting the dorsal and lateral rows of spines. Scale bars: a–g 5mm.
FIGURE 1 in Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27 S) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
FIGURE 1. Study area in the state of Santa Catarina, Brazil, highlighting the islands of Arvoredo, Deserta and Gales inside the no-take area in the Marine Biological Reserve of Arvoredo (RMBA) and the Islands of Porto Belo, Aranhas and Calhau de São Pedro outside the no-take Marine Protected Area.
FIGURE 4. Alpheus formosus Gibbes, 1850 in Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27 S) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
FIGURE 4. Alpheus formosus Gibbes, 1850. (A) superior view, alive animal with natural posture and colour pattern highlighting the unarmed merus of third pereiopod; (B) lateral view with natural colour pattern; (C) telson and uropods with dark-coloured spiniform setae in laterals; (D) close-up of lateral view highlighting the rostrum, the teeth on orbital hoods and the proportion of proximal antennal and antennular segments; (E) close-up of superior view highlighting the rostrum, the teeths on orbital hoods and the proportion of proximal antennular segments; (F) major first chela; (G) minor first chela with balaeniceps setae; (H) Merus of chelipeds with distal tooth on ventromesial margin. Scale bars: a–f 5mm; g–h 1mm.
FIGURE 2 in Extending the southern range of four shrimps (Crustacea: Decapoda: Stenopodidae, Hippolytidae and Alpheidae) in southwestern Atlantic (27 S) and confirming the presence of Mediterranean Stenopus spinosus Risso, 1827 in Brazil
FIGURE 2. Stenopus hispidus (Olivier, 1811). (A) Frontal view of a live animal with natural posture and colour pattern; (B) superior view, alive animal with natural posture and colour pattern; (C) lateral view, alive animal, details of rostrum, antenular peduncle, subdivided fifth pereiopod and colour of pereiopods and eggs; (D) lateral view, details of rostrum, antenular peduncle and scale; (E) antennal scale with rows of spines on dorsal surface; (F) subdivided carpi and propodi of fourth pereopod; (G) abdomen with spines highlighting the third and fourth pleonal somite. Scale bars: a–g 1cm.
FIGURE 8 in Two new species of the genus Vosmaeropsis Dendy, 1892 (Porifera, Calcarea), with comments on the distribution of V. sericata (Ridley, 1881) along the Southwestern Atlantic Ocean
FIGURE 8. Geographical distribution of the species of Vosmaeropsis. Colours represent the marine ecoregions of the world (after Spalding et al. 2009): Dark blue: Temperate Northern Atlantic; Purple: Temperate Northern Pacific; Red: Central Indo- Pacific; Pink: Temperate Australasia; Green: Tropical Atlantic; Yellow: Temperate South America; and Orange: Tropical Eastern Pacific. Numbers indicate the species and roughly represent the location where the species were found (1—V. cyathus; 2—V. hispanica; 3—V. gardineri; 4—V. oruetai; 5—V. simplex; 6—V. gr i s e a; 7—V. spinosa; 8—V. japonica; 9—V. maculata; 10—V. sasakii; 11—V. conexiva; 12—V. ho z aw ai; 13—V. depressa; 14—V. wilsoni; 15—V. mackinnoni; 16—V. macera; 17—V. sericata; 18—V. levis; 19—V. complanatispinifera sp. nov.; 20—V. recruta sp. nov.; 21- V. ovata; 22—V. inflata; 23—V. triradiata.
FIGURE 4 in Two new species of the genus Vosmaeropsis Dendy, 1892 (Porifera, Calcarea), with comments on the distribution of V. sericata (Ridley, 1881) along the Southwestern Atlantic Ocean
FIGURE 4. Scanning electron microscopy of Vosmaeropsis recruta sp. nov. (UFBA 4456-POR, holotype). A—General view of the spicule; B—Detail of the smooth apical actine.
FIGURE 3 in Two new species of the genus Vosmaeropsis Dendy, 1892 (Porifera, Calcarea), with comments on the distribution of V. sericata (Ridley, 1881) along the Southwestern Atlantic Ocean
FIGURE 3. Vosmaeropsis recruta sp. nov. (UFBA 4456-POR, holotype). A—Diactine; B—Cortical triactine; C—Subcortical triactine; D—Choanosomal triactine; E—Subatrial triactine; F—Atrial triactine; G—Atrial tetractine.
FIGURE 5 in Two new species of the genus Vosmaeropsis Dendy, 1892 (Porifera, Calcarea), with comments on the distribution of V. sericata (Ridley, 1881) along the Southwestern Atlantic Ocean
FIGURE 5. Vosmaeropsis complanatispinifera sp. nov. (UFBA 1882-POR, holotype). A—Fragments of the preserved specimen; B—Tangential section showing the cortical skeleton; C—Longitudinal section showing the cortex (cx) and atrium (at); D—Tangential section showing the atrial skeleton and apical actines with spines (arrowhead) penetrating the atrial cavity (in detail); E—Histological section showing spherical choanocyte chambers (cc); F—Longitudinal section showing the subcortical layer of pseudosagittal triactines (arrowheads); G—Detail of the fragments of trichoxea in the cortical skeleton (arrowheads).
FIGURE 7 in Two new species of the genus Vosmaeropsis Dendy, 1892 (Porifera, Calcarea), with comments on the distribution of V. sericata (Ridley, 1881) along the Southwestern Atlantic Ocean
FIGURE 7. Scanning electron microscopy of V. complanatispinifera sp. nov. (UFBA 1882-POR, holotype). A-C—Flattened apical actine with spines (arrows) in detail.
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