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11 results for “anchialine systems”
FIGURE 7 in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 7. Vertical profiles in Cenote Crustacea. The dashed line represents the eastern (Speleonectes tulumensis Yager, 1987) side of Cenote Crustacea and the solid line the western (S. fuchscockburni n. sp.) side. A, salinity. B, temperature. C, pH. D, dissolved oxygen. Individual measurements were taken at two-second intervals between the surface and maximum depth.
FIGURE 6. Speleonectes fuchscockburni n in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 6. Speleonectes fuchscockburni n. sp. A–B, paratype 3, SEM micrographs. A, ventrolateral view of head. B, terminal claw complex of maxilla. Adr = antennule, dorsal ramus; Avr = antennule, ventral ramus; d = denticles of terminal claw; ff = frontal filaments; hs = head shield; htc = horseshoe-type terminal claw; mx = maxilla; mxl = maxillule; mxp = maxilliped; sp = sternal plate; tp = thumb-like pad with setae.
FIGURE 3. Speleonectes fuchscockburni n in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 3. Speleonectes fuchscockburni n. sp. A, holotype, B–E, paratype 1 (12 mm). A, dorsal view of head shield and trunk segments 1–4. B, natatory limb of trunk segment 1. C, short serrate corner seta of trunk limbs (freehand drawing). D, natatory limb of trunk segment 14. E, anal somite with caudal rami. Scale bars: A = 0.3 mm; B–D, E = 0.1 mm. Continuous lines were used to outline articulated structures such as segments and setae, dotted lines to indicate covered structures, and dashed lines for the reconstruction of structures that were damaged during dissection.
FIGURE 5. Speleonectes fuchscockburni n in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 5. Speleonectes fuchscockburni n. sp. A–F, paratype 1 (12 mm). A, maxillule. B, maxilla. C, maxilliped. D, slender serrate seta of endite of maxillular segment 1. E, stout, rasp-like seta of endite of maxillular segment 3. F, terminal claw complex of maxilla. Scale bars: A–C = 0.1 mm. See Fig. 3 for details regarding different line types.
FIGURE 2. Speleonectes fuchscockburni n in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 2. Speleonectes fuchscockburni n. sp. Living animal. A, habitus. B, head region. Photographs by Brett C. Gonzalez.
FIGURE 1. A in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 1. A, map of the northeastern region of the Yucatán Peninsula (shown on insert), with locations of cenotes from which Mexican speleonectids have been reported: 1 = Cenote Crustacea; 2 = Cenote Chac Mool; 3 = Cenote Ponderosa; 4 = Cenote Tajama Ha; 5 = Cenote Carwash; 6 = Cenote Vaca Ha; 7 = Cenote Temple of Doom; 8 = Cenote Najaron; 9 = Cenote Mayan Blue. B, map of the Sistema Crustacea cave showing the main cenote entrance pool, underwater cave passages, and the approximate regions within the cave inhabited by: 1 = Speleonectes tulumensis Yager, 1987b; 2 = S. fuchscockburni n. sp.
FIGURE 4. Speleonectes fuchscockburni n in Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico
FIGURE 4. Speleonectes fuchscockburni n. sp. A–B, D, paratype 1 (12 mm). C, E–G, paratype 2 (16 mm). A, antennule. B, antenna. C, frontal filament. D, labrum. E, right mandible. F, processus incisivus (left) and lacina mobilis (right) of right mandible. G, processus incisivus (left) and lacina mobilis (right) of left mandible. Scale bars: A–E = 0.1 mm. See Fig. 3 for details regarding different line types.
Figure 2 from: Benítez S, Illife TM, Quiroz-Martínez B, Alvarez F (2019) How is the anchialine fauna distributed within a cave? A study of the Ox Bel Ha System, Yucatan Peninsula, Mexico. Subterranean Biology 31: 15-28. https://doi.org/10.3897/subtbiol.31.34347
Figure 2 Ecological parameters of the anchialine fauna in the Ox Bel Ha anchialine cave system along a transect A mean ± one standard error of the abundance B mean ± one standard error of the species richness C Shannon's diversity index. The sites are: T, Tábano; O, Odyssey; M, Muknal; B, Bang.
Figure 1 from: Benítez S, Illife TM, Quiroz-Martínez B, Alvarez F (2019) How is the anchialine fauna distributed within a cave? A study of the Ox Bel Ha System, Yucatan Peninsula, Mexico. Subterranean Biology 31: 15-28. https://doi.org/10.3897/subtbiol.31.34347
Figure 1 Map of the Ox Bel Ha anchialine cave system near the town of Tulum. Quintana Roo, Mexico. The four cenotes used to access the cave were: Tábano, Odyssey, Muknal and Bang.
Figure 4 from: Benítez S, Illife TM, Quiroz-Martínez B, Alvarez F (2019) How is the anchialine fauna distributed within a cave? A study of the Ox Bel Ha System, Yucatan Peninsula, Mexico. Subterranean Biology 31: 15-28. https://doi.org/10.3897/subtbiol.31.34347
Figure 4 A Dendrogram and B non-metrical multidimensional scaling (nMDS) ordination plot, both resulting from the similarity matrix based on Jaccard's similarity index.
Figure 3 from: Benítez S, Illife TM, Quiroz-Martínez B, Alvarez F (2019) How is the anchialine fauna distributed within a cave? A study of the Ox Bel Ha System, Yucatan Peninsula, Mexico. Subterranean Biology 31: 15-28. https://doi.org/10.3897/subtbiol.31.34347
Figure 3 Distribution of organisms by species in relation to depth in the four cenotes studied in the Ox Bel Ha cave: A, cenote Tábano; B, cenote Odyssey; C, cenote Muknal; and D, cenote Bang. The red band depicts the halocline, its width represents the thickness of the interface.
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