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110 results for “Potamonautes”
Figure 1. A in Cryptic and widespread: a recipe for taxonomic misidentification in a freshwater crab species (Decapoda: Potamonautidae: Potamonautes sidneyi) as evident from species delimitation methods
Figure 1. A map of southern Africa (South Africa and Eswatini) showing the sites where freshwater crabs were collected during the present study. The 30 Potamonautes sidneyi s.s. sample localities are represented by solid, black triangles; the eight P. danielsi sample localities are represented by brown squares, while the four sample localities for P. karooensis sp. nov. are represented by a turquoise circle and three sample localities for P. Ʋalles sp. nov., are represented by a green diamond. The Papkuilsfontein locality of P. barbarai was combined with specimens from 13 conspecific populations sequenced by Daniels et al. (2006) and represented by a red triangle. The sample numbers correspond to the 59 localities in Table 1.
Fig. 7. A–B in Two new species of freshwater crabs from the highlands of northern Uganda, East Africa and a redescription of Potamonautes amalerensis (Rathbun, 1935) stat. rev. from Mount Kadam (Brachyura: Potamoidea: Potamonautidae)
Fig. 7. A–B. Potamonautes imatongensis sp. nov., holotype, adult Ƌ, CW 21.5 mm, from the Imatong Mountains in northern Uganda (NHM 1955.11.8.26-27). A. G1 ventral view. B. G1 dorsal view. — C–D. Potamonautes morotoensis sp. nov., holotype, adult Ƌ, CW 26 mm, from Mount Moroto in northern Uganda (NHM 2015.3056). C. G1 ventral view. D. G1 dorsal view. — E–F. Potamonautes amalerensis (Rathbun, 1935) stat. rev., holotype, adult Ƌ, CW 31.5 mm, from Mount Kadam, northern Uganda (MCZ 8238). E. G1 terminal article ventral view. F. G1 terminal article dorsal view. Scale bars: A–B = 2.34 mm, C–D = 3.1 mm, E–F = 3.3 mm.
Fig. 3. A–B, G–H in Two new species of freshwater crabs from the highlands of northern Uganda, East Africa and a redescription of Potamonautes amalerensis (Rathbun, 1935) stat. rev. from Mount Kadam (Brachyura: Potamoidea: Potamonautidae)
Fig. 3. A–B, G–H. Potamonautes imatongensis sp. nov., holotype, adult Ƌ, CW 21.5 mm, from the Imatong Mountains in northern Uganda (NHM 1955.11.8.26-27). A. Right cheliped, frontal view. B. Left cheliped, frontal view. G. G1 ventral view. H. G1 dorsal view. — C–D, I–J. Potamonautes morotoensis sp. nov., holotype, adult Ƌ, CW 26 mm, from Mount Moroto in northern Uganda (NHM 2015.3056). C. Right cheliped, frontal view. D. Left cheliped, frontal view. I. G1 ventral view. J. G1 dorsal view. — E–F, K–L. Potamonautes amalerensis (Rathbun, 1935) stat. rev., holotype, adult Ƌ, CW 31.5 mm, from Mount Kadam, northern Uganda (MCZ 8238). E. Right cheliped, frontal view. F. Left cheliped, frontal view. K. G1 ventral view. L. G1 dorsal view. Scale bar: A–B = 6.8 mm; C–D =5.1 mm; E–F = 6.5 mm; G–L = 4.5.
Fig. 2. A–B, G, J in Two new species of freshwater crabs from the highlands of northern Uganda, East Africa and a redescription of Potamonautes amalerensis (Rathbun, 1935) stat. rev. from Mount Kadam (Brachyura: Potamoidea: Potamonautidae)
Fig. 2. A–B, G, J. Potamonautes imatongensis sp. nov., holotype, adult Ƌ, CW 21.5 mm, from the Imatong Mountains in northern Uganda (NHM 1955.11.8.26–27). A. Carpus and merus of right cheliped, dorsal view. B. Carpus and merus of right cheliped, ventral view. G. Third maxilliped frontal view. J. Anterior thoracic sternum. — C–D, H, K. Potamonautes morotoensis sp. nov., holotype, adult Ƌ, CW 26 mm, from Mount Moroto in northern Uganda (NHM 2015.3056). C. Carpus and merus of right cheliped, dorsal view. D. Carpus and merus of right cheliped, ventral view. H. Third maxilliped, frontal view. K. Anterior thoracic sternum. — E–F, I, L. Potamonautes amalerensis (Rathbun, 1935) stat. rev., holotype, adult Ƌ, CW 31.5 mm, from Mount Kadam, northern Uganda (MCZ 8238). E. Carpus and merus of right cheliped, dorsal view. F. Carpus and merus of right cheliped, ventral view. I. Third maxilliped frontal view. L. Anterior thoracic sternum. Scale bar: A–B = 3.4 mm; C–D = 3.8 mm; E–F =
Fig. 3 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. 3. Potamonautes licoensis sp. nov., holotype, ♂ (SAM C-A091399). A. Left gonopod 1, anterior view. B. Left gonopod 1, posterior view. C. Left gonopod 2, anterior view. D. Left gonopod 2, posterior view. Scale bar = 10 mm.
Fig. 2 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. 2. Potamonautes licoensis sp. nov., holotype, ♂ (CL = 17.55 mm) (SAM C-A091399). A. Entire animal, dorsal aspect. B. Entire animal, ventral aspect. C. Cephalothorax, frontal aspect. Scale bar = 10 mm.
Microsatellite genotype data from seven loci for a phylogeographic/population genetic study of the South African endemic freshwater crab Potamonautes lividus sampled from eight localities in the KwaZulu-Natal and Eastern Cape provinces in South Africa
<ol> <li>During the present study, the phylogeography of the only southern African IUCN Red Listed vulnerable (VU) freshwater crab, <i>Potamonautes lividus</i> was investigated by surveying several localities in the Eastern Cape and KwaZulu-Natal provinces in South Africa. Both nuclear and mitochondrial DNA markers were used, and it was hypothesized, that marked genetic differentiation should be present, while niche modeling was undertaken to explore the distribution of the species along the east coast of South Africa. <span><span>Further, the shortfalls in the present approach to IUCN Red Listing, as illustrated by a vulnerable species of crabs are discussed</span></span>.</li> <li>Results from the mtDNA revealed the presence of two haploclades confined to specimens from the two provinces respectively and the general absence of maternal dispersal; a fact that was further validated by the marked <i>F</i><sub>ST</sub> data and high F<sub>ST</sub>. Within the Eastern Cape haploclade, low frequency maternal dispersal occurred, corroborated by the low F<sub>ST</sub>. In contrast, no haplotypes were shared in the KwaZulu-Natal haploclade a fact corroborated by marked F<sub>ST</sub> differences. </li> <li>The microsatellite data demonstrated the presence of higher frequency, possibly paternally biased dispersal of specimens between the Eastern Cape and KwaZulu-Natal provinces. Our results suggest that presence of two distinct management units within <i>P. lividus</i>. Divergence time estimation suggest a late Pleistocene cladogenesis between the Eastern Cape and KwaZulu-Natal haploclades. </li> <li>Considering the presence of <i>P. lividus</i> in several newly collected nature conservation areas in both provinces, and its potential presence in the intermediary area based on the MAXENT niche modeling, our data suggest the species IUCN Red Listing status should be downgraded to LC.</li> <li>A comparison of all the EN, VU and CR IUCN Red Listed freshwater crabs for the entire Afrotropical region reveals the lack of recent sampling in the three biodiversity hotspots in West, Central and East Africa, with mountainous areas containing a disproportionate number of species with most species being devoid of phylogeographic study. </li> </ol>
Figure 1 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 1 - Sampling localities for the present study of Potamonautes in KwaZulu-Natal Province on the east of South Africa. The collection localities of Potamonautes danielsi sp. n. are indicated by black dots, while those of Potamonautes sidneyi are indicated by white open dots. Sites are indicated by numbers which correspond to localities as follows: (Site 1) Lake Sibaya, (Site 2) Mpophomeni Stream, (Site 3) Hluhluwe, (Site 4) Entumeni, (Site 5) Siyayi, (Site 6) Mhlanga, (Site 7) Oribi Gorge and (Site 8) Mtamvuna. Map modified from Gouws et al. (2015; copyright Gouws et al. 2015; licensee: AOSIS Publishing).
Figure 8 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 8 - Potamonautes danielsi sp. n. male holotype CWW 25.8 mm (SAMC A83487). A major cheliped B minor cheliped C right mandibular palp posterior view D right mandibular palp anterior view E 3rd maxilliped F left gonopod 1 anterior view G left gonopod 1 posterior view H left gonopod 2 anterior view, and I left gonopod 2 posterior view. Scale bars: 10 mm (A, B), 2 mm (C, D), 5 mm (E), 5 mm (F,G, H, I). Photos: Nasreen Peer.
Figure 10 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 10 - Habitat types of Potamonautes danielsi sp. n. Various habitat types of Potamonautes danielsi sp. n. A and B Mtamvuna Nature Reserve showing the dense canopy cover under which specimens were collected as well as open streams and pools C Oribi Gorge Nature Reserve, and D Umhlanga Nature Reserve. Photos: A, B, C-Lynette Clennell; D-Nasreen Peer.
Figure 4 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 4 - Potamonautes sidneyi (Rathbun, 1904). Male holotype CWW 47 mm (Yale Peabody Museum catalogue number 1191) A dorsal view B ventral view, and C cephalothorax, frontal aspect. Scale bar: 50 mm. Photos: Eric Lazo-Wasem.
Figure 5 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 5 - Potamonautes sidneyi (Rathbun, 1904). male holotype CWW 47 mm (Yale Peabody Museum catalogue number 1191) A major cheliped B minor cheliped C right mandibular palp posterior view D right mandibular palp anterior view E 3rd maxilliped F left gonopod 1 anterior view G left gonopod 1 posterior view H left gonopod 2 anterior view, and I left gonopod 2 posterior view. Scale bars: 5 mm (A, B), 5 mm (C, D), 5 mm (E), 10 mm (F, G, H, I). Photos: Eric Lazo-Wasem.
Figure 7 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 7 - Potamonautes danielsi sp. n. male holotype CWW 25.8 mm (SAMC A83487) A dorsal view, B ventral view, and C cephalothorax, frontal aspect. Scale bar: 10 mm. Photos: Nasreen Peer.
Figure 6 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 6 - Morphological comparison of somites 5 and 6 between A Potamonautes sidneyi (Rathbun, 1904) and B Potamonautes danielsi sp. n.
Figure 3 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 3 - Regression analyses of morphometric measurements of Potamonautes danielsi sp. n. and Potamonautes sidneyi. Regression analyses of: A LogP2ML over LogP2MW B LogCRPW over LogCRPL; and C LogCWA over LogCL between the two species, Potamonautes danielsi sp. n. and Potamonautes sidneyi. All differences between regressions were statistically significant (p < 0.001).
Figure 2 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 2 - Histogram of canonical scores for Potamonautes danielsi sp. n. and Potamonautes sidneyi calculated from a discriminant function analysis, based on six carapace and two right cheliped variables.
Figure 9 from: Peer N, Gouws G, Lazo-Wasem E, Perissinotto R, Miranda NAF (2017) Redescription of Potamonautes sidneyi (Rathbun, 1904) (Decapoda, Potamonautidae) and description of a new congeneric species from KwaZulu-Natal, South Africa. ZooKeys 657: 1-28. https://doi.org/10.3897/zookeys.657.11623
Figure 9 - Morphological comparison of carapace features between A Potamonautes perlatus and B Potamonautes danielsi sp. n.
Figure 7 from: Peer N, Perissinotto R, Gouws G, Miranda NAF (2015) Description of a new species of Potamonautes MacLeay, 1838, from the iSimangaliso Wetland Park, South Africa. ZooKeys 503: 23-43. https://doi.org/10.3897/zookeys.503.9532
Figure 7 - A Burrows of Potamonautes isimangaliso sp. n. are typically found on the banks of ephemeral pans and are even maintained when pans are completely dry B Potamonautes isimangaliso sp. n. in its natural habitat. Photos: Lynette Clennell.
Figure 6 from: Peer N, Perissinotto R, Gouws G, Miranda NAF (2015) Description of a new species of Potamonautes MacLeay, 1838, from the iSimangaliso Wetland Park, South Africa. ZooKeys 503: 23-43. https://doi.org/10.3897/zookeys.503.9532
Figure 6 - Sampling localities of Potamonautes isimangaliso sp. n.: a Main Road Pan (FB1) b Mpophomeni Pan (FB3) c Dukandlovu Pan (FB5) and d Sandy Point Pan (FB6), completely dry during Feb 2015. Photos: a–c Lynette Clennell; d Nasreen Peer.
Figure 5 from: Peer N, Perissinotto R, Gouws G, Miranda NAF (2015) Description of a new species of Potamonautes MacLeay, 1838, from the iSimangaliso Wetland Park, South Africa. ZooKeys 503: 23-43. https://doi.org/10.3897/zookeys.503.9532
Figure 5 - Potamonautes isimangaliso sp. n. male holotype CWW 55.1 mm (ISAM A78908). a major cheliped b minor cheliped c right mandibular palp posterior view d right mandibular palp anterior view e 3rd maxilliped f left gonopod 1 anterior view with enlarged terminal segment g left gonopod 1 posterior view with enlarged terminal segment h left gonopod 2 anterior view and i left gonopod 2 posterior view. Scale bars: 10 mm (a, b), 1 mm (c, d), 10 mm (e), 5 mm (f, g), 1 mm (h, i). Photos: Nasreen Peer.
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