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38 results for “Columbiformes”
Fig. 5 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 5. Allopeas clavulinum one of two subulinid snails possibly acting as intermediate host for the Paratanaisia bragai infection, found in one of the aviaries housing several of the cases.
Fig. 4 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 4. Emerald dove case: Kidney with dilated collecting ducts and numerous cross section of trematodes (arrow) with minimal inflammation. HE.
Fig. 1 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 1. Red bird-of-paradise case. (A) Renal flukes in collecting ducts (arrows) with minimal inflammatory changes. HE. (B) Necrosis and granulomatous nephritis surrounding trematode eggs (arrow). HE.
Fig. 3. Socorro dove case 2 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 3. Socorro dove case 2. (A) Asymmetrically enlarged pale tan left and atrophic / cystic right kidney. Macroscopic view. (B) Kidney with focally extensive central necrosis surrounding fluke eggs (arrow) and surrounding granulomatous inflammatory reaction. HE. (C) Kidney with chronic granulomatous tubulointerstitial nephritis surrounding free trematode eggs. HE.
Fig. 2. Socorro dove case 1 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 2. Socorro dove case 1. (A) Kidneys with cranial atrophy, haemorrhage and caudal polar gout deposition and also pericardial gout deposition. Macroscopic view. (B) Cystic dilation of collecting ducts, haemorrhage and granulomatous nephritis. HE.
Data from: Extinction selectivity obscures patterns of trait-dependent endangerment in Columbiformes
<p>Understanding how extinction has occurred in the recent past is crucial to unravel its main drivers as well as to implement effective conservation practices to minimize global biodiversity loss. It has long been hypothesized that extinction risk is not randomly distributed among traits of species. However, the actual traits making species more prone to extinction may have been overlooked because already extinct species are often not considered in comparative analyses of extinction risk. We characterized the drivers of extinction in a cosmopolitan bird clade, including Holocene and contemporary extinctions potentially related to human impacts, and provided evidence of an 'extinction selectivity' in species traits. We constructed a new phylogenetic hypothesis of the Columbiformes, a cosmopolitan bird clade consisting of 33 recently extinct and 351 extant species. Then, we integrated data on geography, behaviour, and morphology to reveal the drivers of extinction risk. We used phylogenetic generalized least square models to test the effect of geography, behaviour, and morphology on the risk of extinction and identified differences in the drivers of extinction when including vs. excluding recently extinct species. Our analysis revealed that Columbiformes endemic from islands with ground-foraging habits, weak flying abilities, migratory behaviour, and larger body sizes are more vulnerable to extinction. Our results also show that excluding recently extinct species identifies extinction drivers differently from those when including recently extinct species. Only by accurately identifying the traits that increase extinction risk can we develop targeted conservation measures that promote the long-term persistence of threatened species. Extinction selectivity has important implications for the conservation of biological communities and ultimately ecosystem functioning, considering the critical role Columbiformes often play as seed dispersers.</p>
Data from: Extinction selectivity obscures patterns of trait-dependent endangerment in Columbiformes
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FIGURE 4 in New species and records of the quill mites of the genus Peristerophila Kethley 1970 (Acariformes: Syringophilidae) associated with pigeons and doves (Aves Columbiformes)
FIGURE 4. Peristerophila geopelis sp. nov., female. A, peritremes, B, fan-like seta p'III, Peristerophila leucomela sp. nov., female. C, peritremes; D, fan-like seta p'III.
FIGURE 1 in New species and records of the quill mites of the genus Peristerophila Kethley 1970 (Acariformes: Syringophilidae) associated with pigeons and doves (Aves Columbiformes)
FIGURE 1. Scheme of details of Peristerophila idiosomal sclerotizations (females). A–D, propodonotal shield; E–G, hysteronotal shield; H, pygidial shield.
FIGURE 3 in Eimeria ferreirai n. sp. (Chromista: Miozoa: Eimeriidae) from doves Leptotila spp (Columbiformes: Columbidae) from Brazil
FIGURE 3. Maximum likelihood tree estimated from the COI gene sequences of eimeriid species. Numbers at nodes represent bootstrap support 1000 replicates (> 50%) for Neighbor-Joining (NJ) and Maximum Likelihood (ML) respectively. Scale bar represents the number of nucleotide substitutions per site.
FIGURE 2 in Eimeria ferreirai n. sp. (Chromista: Miozoa: Eimeriidae) from doves Leptotila spp (Columbiformes: Columbidae) from Brazil
FIGURE 2. Photomicrographs (A–F) of sporulated oocysts of Eimeria ferreirai n. sp., a new coccidium species recovered from doves Leptotila spp. Note the inner (IL) and outer (OL) layer of the oocyst wall, micropyle (M), micropyle cap (MC), nucleus (N), polar granule (PG), refractile body (RB), Stieda body (SB) and the sporocyst residuum (SR). Scale-bar: 10µm.
FIGURE 1 in Eimeria ferreirai n. sp. (Chromista: Miozoa: Eimeriidae) from doves Leptotila spp (Columbiformes: Columbidae) from Brazil
FIGURE 1. Line drawing of the sporulated oocyst of Eimeria ferreirai n. sp., a new coccidium species recovered from doves Leptotila spp. Scale-bar: 10µm.
FIGURE 5A–F in Two new species of quill mites of the family Syringophilidae (Acariformes: Cheyletoidea) associated with treronine doves (Columbiformes: Columbidae: Treroninae)
FIGURE 5A–F. Peristerophila lature sp. nov., female (A–C). A, peritremes; B, fan-like seta p' of tarsi III; C, solenidia of legs I. Male (D–F). D, peritremes; E, opisthosoma in ventral view; F, dorsal view.
FIGURE 2A–G in Two new species of quill mites of the family Syringophilidae (Acariformes: Cheyletoidea) associated with treronine doves (Columbiformes: Columbidae: Treroninae)
FIGURE 2A–G. Gunabopicobia masalaje sp. nov., female (A–D). A, hypostomal apex with distal part of movable cheliceral digit; B, peritremes; C, solenidia of legs I; D, proximal part of movable cheliceral digit. Male (E–G). E, hypostomal apex with distal part of movable cheliceral digit; F, peritremes; G, genito-anal region.
FIGURE 3. Meitingsunes spp. M in Two new Meitingsunes species (Acari: Syringophilidae) from Indonesian doves (Columbiformes: Columbidae)
FIGURE 3. Meitingsunes spp. M. chalcophaps sp. nov., female (A–D): A, peritremes; B, tarsus I in dorsal view; C, solenidia of leg I; D, fan-like seta p'III; male (E, F): E, peritremes; F, genito-anal region. M. turacoenas sp. nov., female (G): G, peritremes.
FIGURE 2 in Molecular characterization of Haemoproteus sacharovi (Haemosporida, Haemoproteidae), a common parasite of columbiform birds, with remarks on classification of haemoproteids of doves and pigeons
FIGURE 2. Evolutionary relationships among haemosporidian parasite (Haemosporida) mitochondrial cytochrome b gene lineages estimated using Bayesian and maximum likelihood analyses. Nodes with bootstrap support> 90% are highlighted in red. Names of the lineages (when available) are given before the species names of parasites; GenBank accession numbers of the lineages are provided after the parasite species names. Clade Aa representing species of Parahaemoproteus subgenus transmitted by biting midges (Ceratopogonidae), Ab—species of Haemoproteus subgenus transmitted by hippoboscid flies, B—species of Plasmodium genus transmitted by mosquitoes (Culicidae), C—species of Leucocytozoon genus transmitted by black flies (Simulidae).
FIGURE 1 in Molecular characterization of Haemoproteus sacharovi (Haemosporida, Haemoproteidae), a common parasite of columbiform birds, with remarks on classification of haemoproteids of doves and pigeons
FIGURE 1. Mature gametocytes of haemoproteids of columbiform birds: Haemoproteus (Parahaemoproteus) turtur (A–C), Haemoproteus (Parahaemoproteus) sacharovi (D–F), Haemoproteus (Haemoproteus) columbae (G–I), Haemoproteus (Haemoproteus) multipigmentatus (J–L), and Haemoproteus (Haemoproteus) iwa (M–O). A, B, D, E, G, H, J, K, M, N—macrogametocytes; C, F, I, L, O—microgametocytes. Long arrows—nuclei of parasites; short arrows—unfilled spaces between gametocyte and nucleus of infected erythrocyte; triangle arrow heads—volutin granules; simple arrow head—vacuole. Giemsa-stained thin blood films. Bar = 10 µm.
Figure 9 in The first endocast of the extinct dodo (Raphus cucullatus) and an anatomical comparison amongst close relatives (Aves, Columbiformes)
Figure 9. Graph of log-transformed body mass (g) vs. log-transformed endocranial volume (mm3). Red star, Raphus cucullatus; black star, Pezophaps solitaria; white circle, Caloenas nicobarica; black diamond, Goura cristata; black square, Gallicolumba luzonica; black circle, Phaps chalcoptera; white diamond, Chalcophaps indica; white square, Columba livia. Grey region indicates maximum and minimum ranges.
Figure 7 in The first endocast of the extinct dodo (Raphus cucullatus) and an anatomical comparison amongst close relatives (Aves, Columbiformes)
Figure 7. Ventral view of the endocasts of nine species of Columbiformes. A, Raphus cucullatus; B, Pezophaps solitaria; C, Caloenas nicobarica; D, Goura cristata; E, Gallicolumba luzonica; F, Didunculus strigirostris; G, Phaps chalcoptera; H, Chalcophaps indica; I, Columba livia. Abbreviations: c, cerebrum; cca, cranial carotid artery; fl, flocculus; mo, medulla oblongata; ob, olfactory bulb; och, optic chiasm; ol, optic lobe; pb, pituitary body; se, sagittal eminence; II–XI, cranial nerves II–XI. Scale bars = 15 mm.
Figure 6 in The first endocast of the extinct dodo (Raphus cucullatus) and an anatomical comparison amongst close relatives (Aves, Columbiformes)
Figure 6. Semicircular canals in eight species of Columbiformes. A, Raphus cucullatus; B, Caloenas nicobarica; C, Goura cristata; D, Gallicolumba luzonica; E, Didunculus strigirostris; F, Phaps chalcoptera; G, Chalcophaps indica; H, Columba livia. Columns from left to right: lateral, rostral, caudal, dorsal, ventral views. Abbreviations: aa, ampulla of anterior semicircular canal; asc, anterior semicircular canal; c, cochlea; cc, common crus; hsc, horizontal semicircular canal; pa, ampulla of posterior semicircular canal; psc, posterior semicircular canal; vf, vestibular fenestra. Scale bars = 10 mm.
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