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Fig. 3. Demodex midae n in A new species of Demodex (Acari: Demodecidae) from the skin of golden-handed tamarins, Saguinus midas (Primates: Cebidae)

Fig. 3. Demodex midae n. sp. (A) Holotype male, ventral view. (B) Holotype male, dorsal view. (C) Spines on the right palpus, male, ventral view. (D) Supracoxal spine, male, dorsal view, arrows indicate the orientation of the left spine as a view on the gnathosoma. (E) Claw on the leg of tarsi, male. (F) Aedeagus. (G) Female, ventral view. (H) Egg. ae: aedeagus, op: opisthosomal organ, sg: subgnathosomal setae (setae n), sc: supracoxal spine (setae elc.p), vu: vulva. Scale bars = 20 μm (A, B, G, H) and 1 μm (C–F).

Fig. 2 in A new species of Demodex (Acari: Demodecidae) from the skin of golden-handed tamarins, Saguinus midas (Primates: Cebidae)

Fig. 2. Demodectic mange in a male golden-handed tamarin (case 1). (A) Macrophage/histiocyte accumulate and form nodules around the follicles that have filled and expanded with demodecid mites. H&E. Scale bar = 1 mm. (B) Dilated hair follicles are filled with transverse or cross sections of demodecid mites. The monotonous infiltrating macrophage/histiocyte surrounding the follicle has round to slightly irregular nuclei and abundant eosinophilic cytoplasm. Numerous mitotic figures are seen. H&E. Scale bar = 50 μm. (C) Almost all macrophage/histiocytes are strongly immunolabeled with Iba-1. Scale bar = 1 mm. (D) Numerous macrophage/histiocytes are immunolabeled for Ki-67 with a Ki-67 labeling index of 85.5%. Scale bar = 50 μm. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

Fig. 4 in A new species of Demodex (Acari: Demodecidae) from the skin of golden-handed tamarins, Saguinus midas (Primates: Cebidae)

Fig. 4. Maximum likelihood phylogenetic trees of Demodex (Trombidiformes: Cheyletoidea: Demodecidae). (A) 18S sequence-based rooted phylogenetic tree with Myobia (Trombidiformes: Prostigmata: Myobiidae) as outgroup and Cheletomimus and Neochelacheles (Trombidiformes: Cheyletoidea: Cheyletidae) as related species of Demodex. (B) 16S sequence-based midpoint-rooting tree. Accession numbers are shown in roman next to the taxa names. Nodes are labeled with bootstrap values greater than 60%. Scale bars represent substitutions per site.

Fig. 1 in A new species of Demodex (Acari: Demodecidae) from the skin of golden-handed tamarins, Saguinus midas (Primates: Cebidae)

Fig. 1. Photographs of a male red-handed tamarin of case 1. (A and B) On initial examination, hair loss, and scale are found on the face, especially severe on the left temple, with numerous psoriasis-like plaques. (C and D) Findings of five months after treatment with fluralaner showing resolution of related lesions. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

opencc-by-4.0Nov 2022View details →

zenodo36/100

Taxonomic review of Saguinus mystax (Spix, 1823) (Primates, Callitrichidae), and description of a new species

Taxonomic review of Saguinus mystax (Spix, 1823) (Primates, Callitrichidae), and description of a new species

zenodo36/100

A case of reconciliation in wild tamarins, Saguinus mystax

The video shows a sequence cut from a longer (10 min) video of a grooming session involving three wild moustached tamarins, Saguinus mystax (Callitrichidae, Primates). It shows reconciliatory behaviour by an aggressor towards the victim of the aggression. Reconciliation has not been reported previously from wild tamarins or other wild callitrichids.

opencc-by-4.0Jun 2019View details →

dryad32/100

Data from: Role of recent and old riverine barriers in fine scale population genetic structure of Geoffroy's Tamarin (Saguinus geoffroyi) in the Panama Canal Watershed

The role of physical barriers in promoting population divergence and genetic structuring is well known. While it is well established that animals can show genetic structuring at small spatial scales, less well resolved is how the timing of the appearance of barriers affects population structure. This study uses the Panama Canal watershed as a test of the effects of old and novel riverine barriers in creating population structure in Saguinus geoffroyi, a small cooperatively breeding Neotropical primate. Mitochondrial sequences and microsatellite genotypes from three sampling localities revealed genetic structure across the Chagres River and the Panama Canal, suggesting that both waterways act as barriers to gene flow. F-statistics and exact tests of population differentiation suggest population structure on either side of both riverine barriers. Genetic differentiation across the Canal, however, was less than observed across the Chagres. Accordingly, Bayesian clustering algorithms detected between two and three populations, with localities across the older Chagres river always assigned as distinct populations. While conclusions represent a preliminary assessment of genetic structure of S. geoffroyi, this study adds to the evidence indicating that riverine barriers create genetic structure across a wide variety of taxa in the Panama Canal watershed and highlights the potential of this study area for discerning modern from historical influences on observed patterns of population genetic structure.

opencc-zeroDec 2011View details →

FIGURE 2 in Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae)

FIGURE 2. Plots of scores for first and third components from Principal Component analysis. Stars: S. midas; Open triangles: S. niger; Filled squares: S. ursulus.

FIGURE 5 in Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae)

FIGURE 5. Distribution of S. ursulus (squares), S. niger (circles), and S. midas (triangles). For the gazetteer of localities, see appendix 2.

FIGURE 3 in Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae)

FIGURE 3. Plots of scores for second and third components from Principal Component Analysis. Stars: S. midas; Open triangles: S. niger; Filled squares: S. ursulus.

FIGURE 1 in Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae)

FIGURE 1. Plots of scores for two first components from Principal Component Analysis. Note the considerable overlapping of scores among three groups. Stars: S. midas; Open triangles: S. niger; Filled squares: S. ursulus.

FIGURE 4 in Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae)

FIGURE 4. Dorsal pelage coloration pattern in Saguinus midas group: A—S. midas (AMNH 14845), B—S. ursulus (AMNH 96481), C—S. niger (AMNH 96499). Note some diagnostics characters in S. ursulus, such as golden buffy striated and long dorsal hairs, and dorsal disheveled hairs.