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118 results for “freshwater amphipods”
Figure 2 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 2. Recorded distribution of 'synurellids' in North America. Symbols with outlines denote type localities for the respective taxa.
Figure 1 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 1. Maximum- likelihood phylogeny acquired from concatenated dataset (18S ribosomal DNA and COI) using IQTREE. Node support for each of the three support methodologies used is indicated by shaded circles placed on nodes; weakly supported nodes are not marked. Results of four species delimitation analyses (bPTP, GMYC, ASAP and ABGD) are presented to the right of the tree for members of the genus Sicifera. Vertical lines to the right of the tree illustrate both major clades within the family and biogeographical realms occupied by members of the Crangonyctidae. The line illustration depicts a male Sicifera cahawba. Abbreviations: ABGD, automatic barcode gap discovery; ASAP, assemble species by automatic partitioning; bPTP, Bayesian Poisson tree processes; GMYC, generalized mixed Yule coalescent; PP, posterior probability; SHaLRT, Shimodaria–Hasegawa approximate likelihood ratio test; UFBS, ultrafast bootstrap. New taxa and new combinations indicated.
Figure 5 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 5. Sicifera cahawba; holotype male, Old Cahawba Prairie, Dallas County, AL, USA (USNM 1660542), 6.38 mm. A, upper lip. B, lower lip. C, maxilla 1 (outer plate spine teeth enlarged). D, maxilla 2. E, maxilliped (apical margin of inner plate enlarged). Scale bars: 0.5 mm.
Figure 4 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 4. Sicifera cahawba; holotype male, Old Cahawba Prairie, Dallas County, Alabama (USNM 1660542), 6.38 mm. A, antenna 1 (single aesthetasc enlarged). B, antenna 2 (single calceolus enlarged). C, left mandible (lacinia mobilis enlarged). D, right mandible (palp omitted, lacinia mobilis enlarged). Scale bars: 1 mm in A, B; 0.5 mm in C, D.
Figure 7 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 7. Sicifera cahawba; holotype male, Old Cahawba Prairie, Dallas County, AL, USA (USNM 1660542), 6.38 mm. A, pereopod 3. B, pereopod 4. C, pereopod 5. D, pereopod 6. E, pereopod 7. Scale bar: 1 mm.
Figure 10 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 10. Sicifera cahawba; allotype female, Old Cahawba Prairie, Dallas County, AL, USA (USNM 1660543), 8.27 mm. A, uropod 1. B, uropod 2. C, uropod 3. D, telson. Scale bars: 1 mm.
Figure 9 in Phylogenetic analyses of a new freshwater amphipod reveal polyphyly within the Holarctic family Crangonyctidae, with revision of the genus Synurella
Figure 9. Sicifera cahawba; allotype female, Old Cahawba Prairie, Dallas County, AL, USA (USNM 1660543), 8.27 mm. The arrows in this figure associate the enlargement of the palmar margin/dactylus with the respective gnathopod. A, gnathopod 1 (palmar margin and dactylus enlarged). B, gnathopod 2 (palmar margin and dactylus enlarged). Scale bar: 1 mm.
FIGURE 6. Hyalella montana n in A new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from Itatiaia National Park, Brazil: an epigean freshwater amphipod with troglobiotic traits at 2,200 meters of altitude
FIGURE 6. Hyalella montana n. sp., Itatiaia National Park (22°22′13,3″S –44°42′32,6″W), Minas Gerais state, Itamonte municipality, Brazil. Holotype, male, 5.8 mm, CRFFP 87. Scale bars: 0.1 mm for T; 0.2 mm for U1–3; 0.5 mm for the remainder.
FIGURE 5. Hyalella montana n in A new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from Itatiaia National Park, Brazil: an epigean freshwater amphipod with troglobiotic traits at 2,200 meters of altitude
FIGURE 5. Hyalella montana n. sp., Itatiaia National Park (22°22′13,3″S –44°42′32,6″W), Minas Gerais state, Itamonte municipality, Brazil. Holotype, male, 5.8 mm, CRFFP 87; paratype, female, 5.0 mm, CRFFP 88. Scale bars: 0.1 mm for Pl; 0.2 mm for Mp; 0.5 mm for the remainder.
FIGURE 4. Hyalella montana n in A new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from Itatiaia National Park, Brazil: an epigean freshwater amphipod with troglobiotic traits at 2,200 meters of altitude
FIGURE 4. Hyalella montana n. sp., Itatiaia National Park (22°22′13,3″S –44°42′32,6″W), Minas Gerais state, Itamonte municipality, Brazil. Holotype, male, 5.8 mm, CRFFP 87; paratype, female, 5.0 mm, CRFFP 88. Scale bars: 0.1 mm for LL; 0.5 mm for the remainder.
FIGURE 3. Hyalella montana n in A new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from Itatiaia National Park, Brazil: an epigean freshwater amphipod with troglobiotic traits at 2,200 meters of altitude
FIGURE 3. Hyalella montana n. sp., Itatiaia National Park (22°22′13,3″S –44°42′32,6″W), Minas Gerais state, Itamonte municipality, Brazil. Paratype, male, 5.8 mm, CRFFP 87. Scale bars: 0.5 mm for A1–2; 0.2 mm for rMd; 0.1 mm for the remainder.
FIGURE 2. Hyalella montana n in A new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from Itatiaia National Park, Brazil: an epigean freshwater amphipod with troglobiotic traits at 2,200 meters of altitude
FIGURE 2. Hyalella montana n. sp., Itatiaia National Park (22°22′13,3″S–44°42′32,6″W), Minas Gerais state, Itamonte municipality, Brazil. Holotype, male, 5.7 mm, CRFFP 86; paratype, female, 5.0 mm, CRFFP 88. Scale bars: 1.0 mm.
FIGURE 1 in A new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from Itatiaia National Park, Brazil: an epigean freshwater amphipod with troglobiotic traits at 2,200 meters of altitude
FIGURE 1. Collection site of H. montana n. sp. A: Itatiaia National Park, Minas Gerais state, Itamonte municipality, Brazil; B: Small stream next to the Alsene river, (22°22′13,3″S–44°42′32,6″W—Type locality); C and D: screening of specimens on a styrofoam tray.
FIGURE 3. N in A new data of freshwater amphipod of genus Niphargus Schiödte, 1849 from Lorestan Province in Iran
FIGURE 3. N. lorestanensis sp. nov., Holotype, male, 10 mm. Shol-Abad. Scale for P III, P IV, P V, P VI and P VII represents 1 mm.
FIGURE 2. N in A new data of freshwater amphipod of genus Niphargus Schiödte, 1849 from Lorestan Province in Iran
FIGURE 2. N. lorestanensis sp. nov., Holotype, male, 10 mm. Shol-Abad. Scale for LMND and RMND represents 0.25 mm; MNDP, MX I, MX II, MXP and LB represents 0.5 mm.
FIGURE 1. N in A new data of freshwater amphipod of genus Niphargus Schiödte, 1849 from Lorestan Province in Iran
FIGURE 1. N. lorestanensis sp. nov., Holotype, male, 10 mm. Shol-Abad. Scale for AI, AII, GNI and GNII represents 1 mm.
FIGURE 4. N in A new data of freshwater amphipod of genus Niphargus Schiödte, 1849 from Lorestan Province in Iran
FIGURE 4. N. lorestanensis sp. nov., Holotype, male, 10 mm. Shol-Abad. Scale for EP I-III and T represents 0.5 mm. Scale for PL I–III and UI–UII represents 1 mm; Scale for UIII represents 2 mm.
FIGURE 6. Hyalella longipropodus n in A new species of freshwater amphipod (Crustacea, Peracarida, Hyalellidae) from Southern Brazil
FIGURE 6. Hyalella longipropodus n. sp. Limberger, Graichen & Castiglioni, Palmeira das Missões municipality, state of Rio Grande do Sul, Southern Brazil. Paratype, male. (A) uropod 1; (B) uropod 2; (C) uropod 3; (D) telson. Scales: 5A—0.5 mm; 5B to 5D—0.2 mm.
FIGURE 2 in A new species of freshwater amphipod (Crustacea, Peracarida, Hyalellidae) from Southern Brazil
FIGURE 2. Paratype male of Hyalella longipropodus n. sp. Limberger, Graichen & Castiglioni, Palmeira das Missões, Palmeira das Missões municipality, state of Rio Grande do Sul, Southern Brazil. Scale: 0.60 mm.
FIGURE 3. Hyalella longipropodus n in A new species of freshwater amphipod (Crustacea, Peracarida, Hyalellidae) from Southern Brazil
FIGURE 3. Hyalella longipropodus n. sp., Palmeira das Missões municipality, state of Rio Grande do Sul, Southern Brazil. Paratype, male. (A) habitus; (B) antenna 1; (C) antenna 2; (D) mandible; (E) upper lip; (F) Lower lip; (G) maxilla 1; (H) maxilla 2; (I) maxilliped. Scales: 0.65 mm for 2A; 0.5 mm for 2B, C; 0.2 mm for 2D–I.
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International Brain Laboratory public data
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OpenNeuro
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