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38 results for “Faxonius”
FIGURE 1 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 1. Nonmetric Multidimensional Scaling (NMDS) graphs showing similarity among specimens. A). All specimens in the dataset, generated by dropping any ratios that were non-significant or sex-related. B). Females only, generated by dropping non-significant and male only ratios. C). Form-I males only and D). Form-II males only. Colored lines were drawn by hand and circumscribe the region that contains all of the data points for the indicated species.
FIGURE 7 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 7. Faxonius wagneri, new species; all from holotype male Form-I (CMNH 38752), except D and E from morphotype male Form-II (CMNH 38754), and I from allotype female (CMNH 38753). A) lateral aspect of carapace; B–C) mesial and lateral aspect of Form-I male first pleopod, respectively; D–E) mesial and lateral views of Form-II male first pleopod, respectively; F) mesial view of entire first pleopod of male Form-I gonopod; G) dorsal aspect of antennal scale; H) dorsal veiw of carapace; I) ventral aspect of the female annulus ventralis; J) dorsal aspect of merus of first pereiopod (=cheliped) showing location of spines; K) dorsal aspect of distal podomeres of the right cheliped. Plate by Guenter A. Schuster.
FIGURE 2 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 2. Bayesian phylogeny depicting relationships among the new species and several other members of the genus from the Ozark Highlands. Numbers at the nodes indicate bayesian posterior probabilities. Clades A and B as discussed in text.
FIGURE 6 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 6. Dorsal view of Faxonius wagneri, new species, morphotype, male form-II (CMNH 38752) from near Dalton, Arkansas.
FIGURE 9. Faxonius eupunctus Williams, 1952 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 9. Faxonius eupunctus Williams, 1952; all from a recently collected male Form-I (CMNH 38755), except D and E from a male Form-II (CMNH 38757), and I from a female (CMNH 38756). A) lateral aspect of carapace; B–C) mesial and lateral aspect of Form-I male first pleopod, respectively; D–E) mesial and lateral views of Form-II male first pleopod, respectively; F) mesial view of entire first pleopod of male Form-I gonopod; G) dorsal aspect of antennal scale; H) dorsal veiw of carapace; I) ventral aspect of the female annulus ventralis; J) dorsal aspect of merus of first pereiopod (=cheliped) showing location of spines; K) dorsal aspect of distal podomeres of the right cheliped. Plate by Guenter A. Schuster.
FIGURE 10 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 10. Map showing the location of museum specimens lots that were examined and measured morphologically as part of this study. Faxonius roberti lots examined are shown as red open circles and the type locality is depicted as an open red circle with a cross. Recent historical locality records (specimens not measured) for F. roberti are indicated with black circles with squares. Faxonius wagneri lots are shown as purple closed circles and the type locality is indicated with a purple closed circle with a cross. Black circles with diamonds indicate other known localities for F. wagneri that were not measured as a part of this study. Black arrows indicate the location of the type localities for both species. Orange lines indicate county boundaries. Black lines indicated HUC8 watershed boundaries. Blue lines indicate major rivers. Map was generated using Google MyMaps.
FIGURE 8 in Two new species of freshwater crayfish of the genus Faxonius (Decapoda: Cambaridae) from the Ozark Highlands of Arkansas and Missouri
FIGURE 8. Photo of Eleven Point River just downstream of the Dalton boat ramp (36.421044, -91.139249,WGS84). This is the location where the morphotype of Faxonius wagneri was collected, just five kilometers south (downstream) of the type locality.
Figure 9 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 9. The mean carapace length of Faxonius compressus collected across 33 sites, based on the macrohabitat type and the water depth at which they were collected. Boxes indicate the treatments̍ interquartile range, and points represent our raw data.
Figure 6 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 6. The density of burrows counted within a 0.25 m2 quadrat based on three separate macrohabitat types across 33 different sites. Boxes indicate the treatments̍ interquartile range, and points represent our raw data.
Figure 5 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 5. Fish species that we documented utilising crayfish burrows. Note that not all photographs depict the fish utilising crayfish burrows. (A) Fantail darter, Etheostoma flabellare. (B) Rainbow darter, Etheostoma caeruleum. (C) Saffron darter, Etheostoma flavum. (D) Redline darter, Etheostoma rifilineatum. (E) Gaurdian darter, Etheostoma oophylax. (F) Banded sculpin, Cottus carolinae.
Figure 1 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 1. (A) Adult male slender crayfish, Faxonius compressus. (B) Morphology of F. compressus claw.
Figure 4 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 4. Co-occurring crayfish species encountered alongside Faxonius compressus within our study area. (A) The hillbilly hairy crayfish, Cambarus polypilosus. (B) Saddleback crayfish, Faxonius durrelli. (C) A juvenile F. durrelli using a hyporheic burrow. (D) An adult big claw crayfish, Faxonius placidus, using a hyporheic burrow.
Figure 2 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 2. (A) Typical view of Faxonius compressus habitat with an abundance of chert gravel and cobble. Large boulders are rare or entirely absent. (B) Benthic view of typical F. compressus habitat, with ample interstitial space allowing for the excavation of interstitial burrows. (C,D) Examples of F. compressus hyporheic burrows within the chert substrate on the stream benthos.
Figure 8 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 8. The number of Faxonius compressus collected across 33 sites based on the macrohabitat type and the water depth at which they were collected. Boxes indicate the treatments̍ interquartile range, and points represent our raw data.
Figure 7 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 7. The relationship between estimated water depth and the density of burrows counted within a 0.25 m2 quadrat. Black circles represent our raw data, and the dashed line presents the linear relationship between water depth and burrow density.
Supplementary material 1 from: Satmari A, Miok K, Ion MC, Zaharia C, Schrimpf A, Pârvulescu L (2023) Headwater refuges: Flow protects Austropotamobius crayfish from Faxonius limosus invasion. NeoBiota 89: 71-94. https://doi.org/10.3897/neobiota.89.110085
Hyperparameter tuning using Grid Search
FIGURE 6 in Description of a new species of crayfish in the genus Faxonius (Decapoda: Cambaridae) from the Lower Ohio River Drainage, with evidence of glacial influence on the distribution of some crayfish species throughout the Ohio River basin
FIGURE 6. Dorsal view of MI holotype of Faxonius elix n. sp. Photograph by Price Sewell.
Figure 3 in Natural history and ecology of the slender crayfish (Faxonius compressus): an ecosystem engineer in the Western Highland Rim, USA
Figure 3. (A–D) Slender crayfish Faxonius compressus inhabiting burrows.
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