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45 results for “Trichodactylidae”
FIGURE 19. Family Trichodactylidae. A in Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: III. Infraorder Brachyura Latreille, 1802
FIGURE 19. Family Trichodactylidae. A) Trichodactylus dentatus H. Milne Edwards, 1853 (CCDB 1775). B) Trichodactylus fluviatilis Latreille, 1828 (CCDB 2070). C) Trichodactylus petropolitanus (Göldi, 1886) (CCDB 2294). Animals from Brazil, São Paulo state: Ilha Comprida (A), São Sebastião (B), Caraguatatuba (C). Sex: females. Scale bars (mm): A—12; B—31; C—24. Photographs by R.C. Buranelli.
FIGURE 2 in Range extension for three species of South American freshwater crabs (Crustacea: Decapoda: Trichodactylidae)
FIGURE 2. Distribution maps of Dilocarcinus septemdentatus, Sylviocarcinus pictus and S. australis according to Magalhães and Türkay (1996a; b); Magalhães (1998; 1999a; b; 2000); Morrone and Lopretto (2001). Dots, locations; drawn lines, distribution known to date; brown lines, newly reported distribution areas.
FIGURE 1. Right male pleopod 1 in Range extension for three species of South American freshwater crabs (Crustacea: Decapoda: Trichodactylidae)
FIGURE 1. Right male pleopod 1, mesial aspect of A) Dilocarcinus septemdentatus, together with ventral view of the carapace with the abdominal segments (A'), B) Sylviocarcinus pictus, and C) S. australis, all from specimens from the Paraná River, Argentina. Scale bar equals 1.0 mm.
FIGURE 2 in Freshwater crabs from eastern Panamá: a new species of Potamocarcinus H. Milne Edwards, 1853, and new records of two little-known species (Crustacea: Decapoda: Pseudothelphusidae, Trichodactylidae)
FIGURE 2. Spirocarcinus garthi (Pretzmann, 1971), male holotype (USNM 107096) (A–E). A, right male first gonopod, mesio-caudal view; B, distal part, lateral view; C, distal part, caudal-apical view; D, distal part, cephalic view; E, left third maxilliped; F, male, SMF 31704, outline of right side of lateral margin of carapace. Abbreviations: al, auriculariform lobe; ap, apical lobe; cl, semicircular subapical lobe; fs, field of apical spines; ls, lateral suture; lt, lateral-cephalic teeth; ms, marginal suture; st, subapical tooth. Scale bars, A–D, 1 mm, E, F, 5 mm.
FIGURE 3 in Freshwater crabs from eastern Panamá: a new species of Potamocarcinus H. Milne Edwards, 1853, and new records of two little-known species (Crustacea: Decapoda: Pseudothelphusidae, Trichodactylidae)
FIGURE 3. Geographic distribution of Melocarcinus meekei (Pretzmann, 1968) (•), Potamocarcinus darienensis sp. n. (˔), and Spirocarcinus garthi (Pretzmann, 1971) (⋅) in eastern Panama, Central America.
FIGURE 1. Potamocarcinus darienensis n in Freshwater crabs from eastern Panamá: a new species of Potamocarcinus H. Milne Edwards, 1853, and new records of two little-known species (Crustacea: Decapoda: Pseudothelphusidae, Trichodactylidae)
FIGURE 1. Potamocarcinus darienensis n. sp., male holotype, AMNH 19515. A, dorsal view, preserved in 70% alcohol (photo by C. Magalhães); B, ventral view (photo by C. Magalhães); C, left male first gonopod, mesial view; D, left male first gonopod, cephalic view; E, idem, distal part, lateral view; D, idem, distal part, apical-cephalic view; E, left efferent branchial channel; F, left third maxilliped. Abbreviations: cmp, median process; fs, field of apical spines; ls, lateral suture; me, mesial process; ml, mesial lobe; mp, marginal process; ms, marginal suture; pp, proximal process; rp, rounded protuberance. Scale bars: A, B, 10 mm, C–H, 1 mm.
FIGURE 4. Rodriguezia adani n in A new species of stygobitic freshwater crab of the genus Rodriguezia Bott, 1969 (Crustacea: Decapoda: Trichodactylidae) from Tabasco, Mexico
FIGURE 4. Rodriguezia adani n. sp. first gonopod: A, E, cephalothoracic view; B, F, lateral view; C, G, caudal view; D, H, mesial view.
FIGURE 3. Rodriguezia adani n in A new species of stygobitic freshwater crab of the genus Rodriguezia Bott, 1969 (Crustacea: Decapoda: Trichodactylidae) from Tabasco, Mexico
FIGURE 3. Rodriguezia adani n. sp.: A, B, frontal view of carapace, male holotype; C, male abdomen; D, female abdomen; E, antennule; F, antenna; G, third maxilliped; H, chelae. Scale bars: A, B, H = 5 mm; C, D = 3 mm; E, F = 1 mm; G = 2 mm.
FIGURA 3 in Distribuição de caranguejos Trichodactylidae (Crustacea, Brachyura) em alagados do Pantanal Mato-Grossense (Brasil) e sua correlação com a proximidade do rio Cuiabá e cobertura vegetal
FIGURA 3: Correlação entre a abundância de caranguejos em alagados e a distância do rio Cuiabá, Pantanal Mato-Grossense.
FIGURA 2 in Distribuição de caranguejos Trichodactylidae (Crustacea, Brachyura) em alagados do Pantanal Mato-Grossense (Brasil) e sua correlação com a proximidade do rio Cuiabá e cobertura vegetal
FIGURA 2: Abundância de caranguejos nas diferentes fitofisionomias em alagados do Pantanal Mato-Grossense.
FIGURA 1 in Distribuição de caranguejos Trichodactylidae (Crustacea, Brachyura) em alagados do Pantanal Mato-Grossense (Brasil) e sua correlação com a proximidade do rio Cuiabá e cobertura vegetal
FIGURA 1: Mapa com a localização das parcelas de amostragem em: a = América do Sul; b = Pantanal; c = mesopotâmia entre os rios Cuiabá e São Lourenço. A1 a A5 são parcelas em algodoais, B1 a B5, em monoculturas de Brachiaria spp., C1 a C5, em cambarazais e N1 a N5 parcelas em campos nativos.
FIGURA 4 in Distribuição de caranguejos Trichodactylidae (Crustacea, Brachyura) em alagados do Pantanal Mato-Grossense (Brasil) e sua correlação com a proximidade do rio Cuiabá e cobertura vegetal
FIGURA 4: Correlação entre a abundância de caranguejos a cobertura por gramíneas submersas em alagados do Pantanal Mato-Grossense.
Figure 7 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 7. (a) Frequency of different demographic classes according to rainfall gradient. (b) Frequency of different demographic classes according to water level reservoir gradient. AF = adult females; AM = adult males, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 5 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 5. Monthly distribution of carapace width frequency of individuals of Dilocarcinus pagei Stimpson, 1861. AF = adult females; AM = adult males, CW = carapace width, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 8 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 8. Canonical correspondence analysis between different demographic groups and environmental variables of rainfall and reservoir water level. AF = adult females; AM = adult males, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 6 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 6. (a) Sex ratio by size classes and total number of individuals of Dilocarcinus pagei Stimpson, 1861 sampled during the study period. (b) Monthly sex ratio of individuals of Dilocarcinus pagei. White circles indicate a significant difference in relation to the 1:1 ratio (binomial test, p <.05), and black circles indicate that there was no significant difference. Values above and below 0.5 indicate deviations for males and females, respectively. CW = carapace width.
Figure 4 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 4. Frequency of carapace width of Dilocarcinus pagei Stimpson, 1861. AF = adult females; AM = adult males, CW = carapace width, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 2 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 2. (a) Dilocarcinus pagei Stimpson, 1861; (b) abdomen width; (c) carapace width; (d) right propodus length; (e) female with eggs; (f) female with eggs and juveniles in the abdominal cavity (both at the same time); (g) female with juveniles in the abdominal cavity. Scale bar: 20 mm.
Figure 1 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 1. Location (a) and characterisation (b–e) of the study area in the Araguari River, Tupaciguara, Minas Gerais, Brazil. The sampled section is shown inside the red circle. b = partially exposed Melo Viana bridge found in the original riverbed. The Melo Viana bridge connected the cities of Araguari and Tupaciguara before the dam´s construction in the 1970s when it was submerged by the reservoir filling. b–d = grasses and macrophytes on the banks; e = burrows on the slopes.
Figure 3 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 3. Sampled data on local rainfall and water level in the reservoir during the sampling period, from September 2020 to November 2021.
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