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1,021 results for “Freshwater crabs”
Fig. 4 in Phylogenetics of the freshwater crab (Potamonautes MacLeay, 1838) fauna from 'sky islands' in Mozambique with the description of a new species (Brachyura: Potamoidea: Potamonautidae)
Fig. 4. Potamonautes licoensis sp. nov., holotype, ♂ (SAM C-A091399). A. Major right cheliped. B. Minor left cheliped. Scale bar = 10 mm.
FIGURE 1 in Amamiku, a new genus for the true freshwater crab, Candidiopotamon amamense Minei, 1973 (Decapoda: Brachyura: Potamidae), from the Central Ryukyu Islands, Japan
FIGURE 1. Amamiku amamensis (Minei, 1973) and Candidiopotamon okinawense Minei, 1973. A, Amamiku amamensis (Minei, 1973); B, Candidiopotamon okinawense Minei, 1973; 1, photograph; 2, dorsal view; 3, frontal view. A 1, RUMFZC 99, male, CL 15.2 mm; A 2, 3, ZLKUm. 1086, holotype, male, CL 21.9 mm; B 1, RUMFZC 154, male, CL 30.6 mm; B 2, 3, ZLKU m. 1104, holotype, male, CL 36.2 mm. Scales: 10 mm.
FIGURE 2 in A new species of semi-terrestrial freshwater crab (Crustacea: Decapoda: Brachyura: Potamidae) from the Central Highlands of Vietnam
FIGURE 2. Rathbunamon chumomrayense sp. nov., holotype, male (CW 23.0 mm), IEBR-FC KCx 01. A, carapace, dorsal view; B, frontal view; C, ventral view; D, sternoabdominal cavity showing G 1 s and G 2 s.
Fig. 6 in On Two New Species Of Freshwater Crabs (Crustacea: Decapoda: Brachyura: Potamidae) From Southern Taiwan
Fig. 6, Geothelphusa lili, new species. Holotype male, 20.1 by 15.5 mm (NTOU F000701). A: carapace; B: ventral view of right G1; C: dorsal view of right G1; D: ventral view of right G2; d: ventral view of right G1 terminal segment. Scale: a – c = 1 mm, d = 0.1 mm, e = 1.5 mm.
Fig. 5 in On Two New Species Of Freshwater Crabs (Crustacea: Decapoda: Brachyura: Potamidae) From Southern Taiwan
Fig. 5, Geothelphusa shernshan, new species. Holotype male, 29.5 by 22.5 mm (NTOU F000101). A: carapace; B: ventral view of right G1; C: dorsal view of right G1; D: ventral view of right G2; d: ventral view of right G1 terminal segment. Scale: a – c = 1 mm, d = 0.1 mm, e = 3 mm.
Fig. 2, A-B in On Two New Species Of Freshwater Crabs (Crustacea: Decapoda: Brachyura: Potamidae) From Southern Taiwan
Fig. 2, A-B: Geothelphusa shernshan, new species. Holotype male, 29.5 by 22.5 mm (NTOU F000101). C-D: G. lili, new species. Holotype male, 20.1 by 15.5 mm (NTOU F000701). A, C: dorsal view; B, D: frontal view.
Fig. 4, A, B in On Two New Species Of Freshwater Crabs (Crustacea: Decapoda: Brachyura: Potamidae) From Southern Taiwan
Fig. 4, A, B: Geothelphusa lili, new species. Paratype male, 18.5 by 15.1 mm (NTOU F010101). C, D: G. ferruginea. Paratype male, 20.8 by 16.5 mm (NTOU F020601). All dorsal view of G1; B, D: terminal segment; A, C: synovial membrane. Scale, A, C = 1 mm; B, D: 100 m.
Fig. 3, A, D in On Two New Species Of Freshwater Crabs (Crustacea: Decapoda: Brachyura: Potamidae) From Southern Taiwan
Fig. 3, A, D: Geothelphusa shernshan, new species. Paratype male, 24.3 by 18.5 mm (NTOU F011201). B, E: G. neipu. Paratype male, 34.1 by 26.4 mm (NTOU F001004). C, F: G. pingtung. Paratype male, 35.9 by 28.9 mm (NTOU F001005). All dorsal view of G1, A - C: terminal segment; D - F: synovial membrane. Scale, A = 100 m; B,C = 200 m; D,E = 1 mm; F = 2 mm.
Fig. 1 in On Two New Species Of Freshwater Crabs (Crustacea: Decapoda: Brachyura: Potamidae) From Southern Taiwan
Fig. 1. The locality of Geothelphusa shernshan, new species (a) and G. lili, new species (b) in Taiwan.
Fig. 1 in Evidence That Salt Water May Not Be A Barrier To The Dispersal Of Asian Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae And Potamidae)
Fig. 1. Hemolymph osmolality of three experimental groups (A–C) of Esanthelphusa dugasti (Gecarcinucidae) held for up to 9 days in deep 30 cm fresh water and in 22 and 30 ppt salt water. Line with diamonds = water osmolality. Columns = hemolymph osmolality, light = sub-adults; dark = juveniles; error bars = standard deviation. The x-axis shows the number of days that crabs were subjected to a particular salinity. A. Sub-adults in fresh water (n = 27 and 24, respectively). B. Juveniles in 22 ppt salt water (n = 25). C. Sub-adults (n = 22 and 8, respectively) and juveniles (n = 12) in 30 ppt water. Dark horizontal bar = salinity at which hemolymph is hyperosmotic to the external water.
Fig. 2 in Evidence That Salt Water May Not Be A Barrier To The Dispersal Of Asian Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae And Potamidae)
Fig. 2. Hemolymph osmolality of adult Eosamon smithianum (Potamidae) held for up to 9 days in deep 30 cm fresh water and in 22, 25, and 30 ppt salt water. Line with diamonds = water osmolality. Columns = hemolymph osmolality, light = sub-adults; dark = juveniles; error bars = standard deviation. The x-axis shows the number of days that crabs were subjected to a particular salinity. Adults (n = 5) and juveniles (n = 17, 5) in fresh water ('baseline'), and in deep sea water at 22 ppt (n = 5, 1, respectively), 25 ppt (n = 5), and 30 ppt (n = 3). Dark horizontal bar = salinity at which the hemolymph is hyperosmotic to the external water.
Fig. 4 in Evidence That Salt Water May Not Be A Barrier To The Dispersal Of Asian Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae And Potamidae)
Fig. 4. Hemolymph osmolality of three experimental groups (A–C) of Eosamon smithianum (Potamidae) held in shallow 2.5 cm water of different salinities for up to 13 days. Line with diamonds = water osmolality. Columns = hemolymph osmolality, light = subadults; dark = juveniles; error bars = standard deviation. The x-axis shows the number of days that crabs were subjected to a particular salinity. A. Adults (n = 20, 15, 15, 12, respectively) and juveniles (n = 10, 5, 3, respectively) in fresh water. B. Adults (n = 16, 12, 10, respectively), juveniles (n= 12, 6, respectively) and hatchlings (n=12) in 22 ppt salt water. C. Adults in 28 ppt. salt water (n = 22, 20, 18, respectively). Dark horizontal bar = salinity at which the hemolymph is hyperosmotic to the external water.
Fig. 3 in Evidence That Salt Water May Not Be A Barrier To The Dispersal Of Asian Freshwater Crabs (Decapoda: Brachyura: Gecarcinucidae And Potamidae)
Fig. 3. Hemolymph osmolality of Esanthelphusa dugasti (Gecarcinucidae) in shallow 2.5 cm water at salinities of 0, 7, 13, 15, 22, 30 and 33 ppt. The x-axis shows the number of days (5, 9, or 13) that 7 groups of crabs (A–G) were subjected to a particular salinity. Line with diamonds = water osmolality. Columns = hemolymph osmolality, light = sub-adults; dark = juveniles; error bars = standard deviation. Hemolymph osmolality of: A, sub-adults (n = 24, 17, and 14, respectively), and juveniles (n = 20) in fresh water; B, sub-adults (n = 26, 10, 4, respectively) in 7 ppt salt water. C, subadults (n = 19 and 14) and juveniles (n = 10) in 13 ppt salt water. D, sub-adults in 15 ppt salt water (n = 25, 17 and 6, respectively). E, sub-adults (n = 20, 9, 6, respectively) and juveniles (n = 22) in 22 ppt salt water. F, sub-adults (n = 26, 7, 7, respectively) and juveniles (n = 19) in 30 ppt salt water. G, juveniles in 33 ppt salt water (n = 4, 2, respectively). Dark horizontal bar = salinities at which the hemolymph is hyperosmotic to the external water.
Fig. 5 in A new genus and three new species of freshwater crab (Crustacea: Brachyura: Potamidae) from central and northern Vietnam
Fig. 5. Kukrimon cucphuongensis (Đăng, 1975), male (22.3 × 19.2 mm) (ZRC 2022.0058), Ninh Binh Province, Vietnam. A, overall dorsal view; B, dorsal view of carapace; C, frontal view of cephalothorax; D, antennules, antennae and epistome; E, ventral view of cephalothorax and pleon; F, sternopleonal cavity showing G1 in situ; G, outer view of chelae; F, pleon.
Figure 1 in A new molluscivore crab from Lake Poso confirms multiple colonization of ancient lakes in Sulawesi by freshwater crabs (Decapoda: Brachyura)
Figure 1. Sundathelphusa molluscivora sp. nov. Paratype male (23.5 by 19.0 mm) (ZRC 2000.1703). A, overall view; B, frontal view; C, ventral view.
Figure 3 in A new molluscivore crab from Lake Poso confirms multiple colonization of ancient lakes in Sulawesi by freshwater crabs (Decapoda: Brachyura)
Figure 3. Sundathelphusa molluscivora sp. nov. Paratype male (23.5 by 19.0 mm) (ZRC 2000.1703). A, right side of carapace; B, anterior thoracic sternum; C, left third maxilliped; D, right chelipedal carpus; E, male abdomen; F, right fourth ambulatory leg; G, frontal median triangle. Scale bars: A–F, 5.0 mm; G, 1.0 mm.
Figure 5. Bootstrap 50 in A new molluscivore crab from Lake Poso confirms multiple colonization of ancient lakes in Sulawesi by freshwater crabs (Decapoda: Brachyura)
Figure 5. Bootstrap 50% majority rule consensus tree of phylogenetic relationships within freshwater crabs from Sulawesi, with two species from Thailand used as outgroups, based on maximum parsimony (MP), minimum evolution (ME) and Bayesian inference (BI) (last two with the GTR+I+G model of evolution) topologies. Confidence values from 2000 bootstrap pseudoreplicates (MP/ME) or 2 000 000 generations (BI) based on 562 base pairs of the 16S mitochondrial gene in the order MP/ME/BI; only values above 50% confidence are shown. Abbreviations: Mah, Lake Mahalona; Mat, Lake Matano; Tow, Lake Towuti.
Figure 2 in A new molluscivore crab from Lake Poso confirms multiple colonization of ancient lakes in Sulawesi by freshwater crabs (Decapoda: Brachyura)
Figure 2. Sundathelphusa molluscivora sp. nov. Major chelae. A, male (23.5 by 19.0 mm) (ZRC 2000.1703); B, holotype male (24.6 by 20.4 mm) (MZB 1480); C, female (24.3 by 20.0 mm) (ZRC 2000.1703).
Figure 4 in Two new species of freshwater crabs of the genus Potamiscus Alcock, 1909 (Brachyura: Potamidae) from Nagaland, northeastern India
Figure 4. Potamiscus chizami sp. nov., paratype female (27.71 × 21.26 mm) (ZSI-WRC C.1951) (A–C); Potamiscus mima sp. nov., paratype female (43.04 × 33.27 mm) (ZSI-WRC C.1955) (D–F). A, D, overall dorsal view; B, E, overall ventral view; C, F, thoracic sternites showing vulvae. Scale bars = 10 mm (A, B, D–F), 5 mm (C).
Figure 3 in Two new species of freshwater crabs of the genus Potamiscus Alcock, 1909 (Brachyura: Potamidae) from Nagaland, northeastern India
Figure 3. Potamiscus chizami sp. nov., holotype male (31.22 × 24.19 mm) (ZSI-WRC C.1950) (A–D); Potamiscus mima sp. nov., holotype male (42.65 × 33.82 mm) (ZSI-WRC C.1954) (E–H). A, E, dorsal view of left G1; B, F, dorsal view of left G1 terminal segment; C, G, ventral view of left G1; D, H, left G2. Scale bars = 2 mm (A, C–E, G, H), 1 mm (B, F).
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.