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109 results for “Lagomorpha”
FIGURE 4. Lower m2 in Dental enamel ultrastructure in Ochotona and Prolagus (Mammalia: Lagomorpha: Ochotonidae) from three late Miocene localities in Ukraine
FIGURE 4. Lower m2 enamel ultrastructure; Ochotona sp. from Popovo 3, cross-section.
Auditory region circulation in Lagomorpha: the internal carotid artery pattern revisited
<p>The internal carotid artery (ICA) is one of the major vessels in the cranial circulation. Characters concerning the ICA, such as its course in the auditory region, have been employed frequently in phylogenetic analyses of mammals, including extinct taxa. In lagomorphs, however, our knowledge on vascular features of the auditory region has been based predominantly on living species, mostly on the European rabbit. We present the first survey on 11 out of 12 extant genera and key fossil taxa such as stem lagomorphs and early crown representatives (<em>Archaeolagus</em> and <em>Prolagus</em>). The ICA pattern shows a modified transpromontorial course in stem taxa (<em>Litolagus</em>, <em>Megalagus</em> and <em>Palaeolagus</em>) and <em>Archaeolagus</em>, which we propose as the ancestral character state for Lagomorpha, similar to that for the earliest rodents, plesiadapids and scandentians. The ICA pattern in leporids is perbullar but shows structural similarities to stem taxa, whereas the extrabullar ICA course in Ochotona is apparently a highly derived condition. <em>Prolagus</em> shows a mixed character state between leporids and Ochotona in its ICA route. The persistence of the transpromontorial ICA course and similarities in the carotid canal structure among stem taxa and crown leporids support morphological conservatism in Lagomorpha, in contrast to their sister clade Rodentia.</p>
Low genetic diversity and shallow population structure in the broom hare, Lepus castroviejoi (Lagomorpha:Leporidae)
<p><span class="TextRun SCXW115721130 BCX4"><span class="NormalTextRun SCXW115721130 BCX4">Microsatellite dataset of 322 hare samples from five species: 76 samples from the broom hare (</span></span><em><span class="TextRun SCXW115721130 BCX4"><span class="NormalTextRun SCXW115721130 BCX4">Lepus </span><span class="NormalTextRun SCXW115721130 BCX4">castroviejoi</span></span></em><span class="TextRun SCXW115721130 BCX4"><span class="NormalTextRun SCXW115721130 BCX4">); 81 for the European hare (<em>L. europaeus</em>); 68 for the Iberian hare (<em>L. granatensis</em>); 77 for the mountain hare (<em>L. timidus</em>); and 20 for the Italian hare (<em>L. corsicanus</em>).</span></span></p>
Low genetic diversity and shallow population structure in the broom hare, Lepus castroviejoi (Lagomorpha:Leporidae)
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Molecular phenotyping uncovers differences in basic housekeeping functions among closely related species of hares (Lepus spp., Lagomorpha: Leporidae)
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Auditory region circulation in Lagomorpha: the internal carotid artery pattern revisited
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FIGURE 2 in Genetic evidence supports Sylvilagus mansuetus (Lagomorpha: Leporidae) as a subspecies of S. bachmani
FIGURE 2. Phylogram produced by the Bayesian analysis of concatenated genes (1,854 bp): Cyt b (800 bp), COI (654 bp), and β-fib I7 (400 bp). All specimens of the 3 subspecies of Sylvilagus bachmani, i.e. S. b. cerrosensis, S. b. mariposae, S. b. macrorhinus, and S. mansuetus were monophyletic. Nodes with solid circles have a posterior probability values of 1.0.
FIGURE 1 in Genetic evidence supports Sylvilagus mansuetus (Lagomorpha: Leporidae) as a subspecies of S. bachmani
FIGURE 1. Map of the distribution area of Sylvilagus bachmani (in grey) and examined specimens of S. mansuetus and the three different subspecies of S. bachmani: S. b. cerrosensis, S. b. mariposae, and S. b. macrorhinus, from the Baja California Peninsula, Mexico, and California, USA.
Fig. 2 in Sylvilagus obscurus (Lagomorpha: Leporidae)
Fig. 2.—Dorsal, ventral, and lateral views of skull and lateral view of mandible of an adult Sylvilagus obscurus from Amherst County, Virginia (ASNHC [Angelo State Natural History Collection] 6040). Greatest length of skull is 76.0 mm.
Fig. 3 in Sylvilagus obscurus (Lagomorpha: Leporidae)
Fig. 3.—Distribution of Sylvilagus obscurus based on Campbell et al. (2010) and county distribution records from state natural heritage inventory databases of Pennsylvania, Maryland, West Virginia, Virginia, Kentucky, Tennessee, North Carolina, South Carolina, Georgia, and Alabama.
Fig. 1 in Sylvilagus obscurus (Lagomorpha: Leporidae)
Fig. 1.—Adult Sylvilagus obscurus at Gregory Bald, Blunt County, Tennessee, 21 June 2007. Used with permission of the photographer Kris H. Light.
Figure 2 in Bone histology of the Late Pleistocene Prolagus sardus (Lagomorpha: Mammalia) provides further insights into life-history strategy of insular giant small mammals
Figure 2. Bone histology of Ochotona specimens. A–C, Oc. dauurica. A, MSB 215940 (juvenile) showing a cortex formed by FLC and WB. B, MSB 215680 (young adult), with abundant SVs in the outer cortex. Note that microorganisms attacked this region, hiding bone tissues. C, MSB 215953 (adult) with FLC sandwiched between ICL and a scarce LB layer. Note the strong RL (black arrowhead). D, Oc. collaris UAM 63937 (adult), with an extensive deposition of PFB and clear RL (black arrowhead) splitting it from FLC. Notice the presence of one LAG (white arrowhead). E, F, Oc. princeps. E, UAM 35060 (adult), anterior region with PFB surrounded by a FLC full of SOs. F, UAM 113936 (adult), with detail of the PFB region, showing four LAGs (white arrowheads). For abbreviations, see the text. Scale bars equals 100 μm.
Figure 1 in Bone histology of the Late Pleistocene Prolagus sardus (Lagomorpha: Mammalia) provides further insights into life-history strategy of insular giant small mammals
Figure 1. Bone histology of P. sardus specimens. A, B, R129 (juvenile, 0 LAG) showing the anterior region (A) formed by FLC with SVs and POs, and posterior one (B) where a nonCGM was identified (arrowhead). C, GD52 (juvenile, 0 LAG), medial region showing early external deposition of PFB with some SVs. In the inner cortex, WB is visible, as well as FLC with POs and SVs. D, R000 (juvenile, one LAG), posterior region with FLC sandwiched between the ICL and the outer cortex of LB (reversed image). E, R136 (young adult) showing two LAGs (arrowheads). F, A17 (young adult) with three LAGs (arrowheads). G, R30 (juvenile, two LAGs), detail of the lateral region with SOs
Figure 3. A–F in Bone histology of the Late Pleistocene Prolagus sardus (Lagomorpha: Mammalia) provides further insights into life-history strategy of insular giant small mammals
Figure 3. A–F, boxplots of log-transformed geometrical (CA, MA, CA/MA, and CA/TA) and size variables (DAPm and DTm). A–C, Prolagus sardus age categories (J, Y, and A). D–F, adults of Oc. princeps, Oc. collaris, and Oc. dauurica. See Supporting Information, Table S2 for the raw data, including mean and standard deviation for species and age category. G–I, growth trajectories of CA, MA, and TA, considering DTm (size proxy), of P. sardus (N = 15) and Ochotona (N = 13). See Supporting Information, Appendix S1 for statistical results.
FIGURE 8 in Description of a new species of Haemaphysalis Koch, 1844 (Acari: Ixodidae), a parasite of hares and rabbits (Lagomorpha: Leporidae) in Texas, Oklahoma and Colorado (USA), that was misidentified as H. leporispalustris (Packard, 1869) for more than a century
FIGURE 8. Haemaphysalis leporispalustris (Packard, 1869), scanning electron micrographs of female (A, C, E, G, I: Camp Bullis, Bexar, Texas, USA, USNMENT 01784453; B, D, F, H, J: Bitterroot Valley, Ravalli, Montana, USA, USNMENT 01784454). A, B, Gnathosoma, dorsal view; C, D, Gnathosoma, ventral view; E, F, Gnathosoma, anteroventral view; G, H, Ventral spur of palpal segment III; I, J, Coxa I. Scale-bars: A–F, I, J, 0.1 mm; G, H, 0.05 mm.
FIGURE 6 in Description of a new species of Haemaphysalis Koch, 1844 (Acari: Ixodidae), a parasite of hares and rabbits (Lagomorpha: Leporidae) in Texas, Oklahoma and Colorado (USA), that was misidentified as H. leporispalustris (Packard, 1869) for more than a century
FIGURE 6. Haemaphysalis leporispalustris (Packard, 1869), scanning electron micrographs of male and female (A, C, E, G, I: Camp Bullis, Bexar, Texas, USA, USNMENT 01784453; B, D, F, H, J: Bitterroot Valley, Ravalli, Montana, USA, USNMENT 01784454). A, B, Conscutum of male, dorsal view; C, D, Conscutum of male, dorsolateral view; E, F, Conscutum of male showing punctations and setae, dorsal posterolateral surface; G, H, Scutum of female, dorsal view; I, J, Scutum of female, dorsolateral view. Scale-bars: A–D, G–J, 0.2 mm; E, F, 0.1 mm.
FIGURE 1. Haemaphysalis mariae n in Description of a new species of Haemaphysalis Koch, 1844 (Acari: Ixodidae), a parasite of hares and rabbits (Lagomorpha: Leporidae) in Texas, Oklahoma and Colorado (USA), that was misidentified as H. leporispalustris (Packard, 1869) for more than a century
FIGURE 1. Haemaphysalis mariae n. sp., scanning electron micrographs of male (Camp Bullis, Bexar, Texas, USA, A–C: USNMENT 01784400, D: USNMENT 01784410, paratypes). A, Conscutum, dorsal view; B, Conscutum, dorsolateral view; C, Conscutum showing punctations and setae, dorsal posterolateral surface; D, Apron. Scale-bars: A, B, 0.2 mm; C, D, 0.1 mm.
FIGURE 2. Haemaphysalis mariae n in Description of a new species of Haemaphysalis Koch, 1844 (Acari: Ixodidae), a parasite of hares and rabbits (Lagomorpha: Leporidae) in Texas, Oklahoma and Colorado (USA), that was misidentified as H. leporispalustris (Packard, 1869) for more than a century
FIGURE 2. Haemaphysalis mariae n. sp., digital photographs of male (Camp Bullis, Bexar, Texas, USA, A: USNMENT 01784410, B: USNMENT 01784400, paratypes). A, Postgenital sclerite; B, Adanal sclerites. Scale-bars: A, 0.05 mm; B, 0.1 mm.
FIGURE 9 in Description of a new species of Haemaphysalis Koch, 1844 (Acari: Ixodidae), a parasite of hares and rabbits (Lagomorpha: Leporidae) in Texas, Oklahoma and Colorado (USA), that was misidentified as H. leporispalustris (Packard, 1869) for more than a century
FIGURE 9. Map showing the known geographic distribution of Haemaphysalis mariae n. sp. Filled star shows the type-locality and filled circles show confirmed localities.
FIGURE 5. Haemaphysalis mariae n in Description of a new species of Haemaphysalis Koch, 1844 (Acari: Ixodidae), a parasite of hares and rabbits (Lagomorpha: Leporidae) in Texas, Oklahoma and Colorado (USA), that was misidentified as H. leporispalustris (Packard, 1869) for more than a century
FIGURE 5. Haemaphysalis mariae n. sp., scanning electron micrographs of female (Camp Bullis, Bexar, Texas, USA, USNMENT 01784410, paratype). A, Spiracular plate (arrows indicate orientation of spiracular plate: a, anterior; d, dorsal); B, Gnathosoma, dorsal view; C, Gnathosoma, ventral view; D, Gnathosoma, anteroventral view; E, Ventral spur of palpal segment III; F, Coxae and trochanters; G, coxa I; H, Trochanter I, dorsal view. Scale-bars: A–E, G, H, 0.1 mm; F, 0.2 mm.
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