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Fig. 7 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 7. Light microscopy of Diff-Quick stained blood and culture forms of G1 and G2 (Clade A) (A) Trypomastigote in blood of a woylie naturally infected; (B) slender epimastigote in culture; (C and D) shaped epimastigote in culture; (E) spheromastigote in culture; (F) spheromastigotes dividing in culture. Scale bars = 10 µm.

Fig. 6 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 6. Structures suggestive of amastigotes (arrows) of G2 (Clade A) in heart tissue positive by PCR (H&E stained). Scale bars = (A) 20 µm, (B) 10 µm.

Fig. 5 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 5. Histopathology of two woylies naturally infected with G2 (Clade A) (H&E stained). (A) Multifocal, moderate to severe, chronic, pyogranulomatous myocarditis and (B) endocarditis. (C) Mineralisation of heart tissue. (D) Tongue showing multifocal, moderate, chronic, pyogranulomatous glossitis. (E) Skeletal muscle degeneration. (F) Inflammatory cells around a blood vessel. Scale bars = 20 µm.

Fig. 3 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 3. Phylogenetic relationships of the new trypanosome isolates from Western Australian marsupials based on gGAPDH sequences (~810 bp) using Mr Bayes. The tree was rooted with five sequences as outgroups. Bayesian posterior probabilities are shown at nodes. Bar, 0.07 substitutions per site.

Fig. 10 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 10. Scanning electron micrograph of G2 (Clade A) grown in culture with Vero cells. (A) Trypomastigote invading a cell, with the flagella still external to the cell. (B) Dead cell(s) surrounded by amastigotes and trypomastigotes. Scale bars = 2 µm (A), 4 µm (B).

Fig. 4 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 4. Prevalence of infection with trypanosomes within the different clades in woylies from the stable and declining populations. 95% confidence intervals (95% CI).

Fig. 2 in Trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered Australian marsupial, the brush tailed bettong or woylie (Bettongia penicillata)

Fig. 2. Phylogenetic analysis of the relationships between Australian trypanosomes based on 18S rDNA sequences. Phylogenetic trees were constructed by the Bayesian method sequences (~1410 bp). (B) Phylogenetic position of shorter 18S rDNA sequences (786 bp) CHA1, TRY1, TRY2, WYA1, WYA2, BDA1, Q3, Q10, GP63 and GP94. Threes were rooted with from Bayesian posterior probabilities are shown at nodes. In red: trypanosome genotypes found in this study. Bar, 0.2 substitutions per site.

Fig. 5 in Beyond the disease: Is Toxoplasma gondii infection causing population declines in the eastern quoll (Dasyurus viverrinus)?

Fig. 5. Kaplan Meier survival curves comparing survival trajectories for seronegative (solid line) and seropositive (broken line) eastern quolls. Curves show survival of all quolls first captured at the non-declining site between August 2010 and October 2012.

Fig. 4 in Beyond the disease: Is Toxoplasma gondii infection causing population declines in the eastern quoll (Dasyurus viverrinus)?

Fig. 4. Association between seroprevalence of T. gondii IgG antibodies in eastern quolls at Cradle Mountain and the square-root transformed number of eastern quolls captured 2 months later (y = 2.552–0.022×). Each data point represents a single trapping/sampling session between May 2011 and July 2013.

Fig. 3 in Beyond the disease: Is Toxoplasma gondii infection causing population declines in the eastern quoll (Dasyurus viverrinus)?

Fig. 3. Seroprevalence of T. gondii IgG antibodies in juvenile eastern quolls from time of emergence for 2011 cohort ((a) declining sites (Cradoc and Judbury) and (b) nondeclining site (Bruny Island)) and 2012 cohort ((c) declining sites and (d) non-declining site). Declining sites were not surveyed in September 2012, November 2012, March 2013 or September 2013. Vertical axis shows proportion of quolls tested that were seropositive at titres À 64. Error bars represent 95% confidence intervals calculated using the Jeffreys interval estimation for a small sample size with binomial distribution (Brown et al., 2001).

Fig. 2 in Beyond the disease: Is Toxoplasma gondii infection causing population declines in the eastern quoll (Dasyurus viverrinus)?

Fig. 2. Seroprevalence of T. gondii IgG antibodies in adult eastern quolls at (a) declining sites (Cradoc and Judbury) and (b) non-declining site (Bruny Island). Declining sites were not surveyed in September or November 2012 or March 2013. Vertical axis shows proportion of quolls tested that were seropositive at titres À 64. Error bars represent 95% confidence intervals calculated using the Jeffreys interval estimation for a small sample size with binomial distribution (Brown et al., 2001).

Fig. 6 in Beyond the disease: Is Toxoplasma gondii infection causing population declines in the eastern quoll (Dasyurus viverrinus)?

Fig. 6. Comparison of the probability of T. gondii infection with quoll age, by site. Non-declining site = Bruny Island, Cradle Mountain = fluctuating site, Declining sites = pooled data from Cradoc and Judbury sites. Circles represent individual observations of seronegative (probability = 0) and seropositive (probability = 1) quolls at a given age, with darker circles indicating a higher number of quolls with the same combination of age and serological status. Curve illustrates the fitted data, with grey shading representing 95% confidence intervals.

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Fig. 3 in Ectoparasites are unlikely to be a primary cause of population declines of bent-winged bats in south-eastern Australia

Fig. 3. Ventral view of idiosoma of female Spinturnix loricata. Rectangle in inset photograph denotes position of sternal shield. Note elongate sternal shield (Arrow).

opencc-by-4.0Dec 2018View details →

Fig. 4 in Ectoparasites are unlikely to be a primary cause of population declines of bent-winged bats in south-eastern Australia

Fig. 4. Ventral view of idiosoma of female Spinturnix psi. Rectangle in inset photograph denotes position of sternal shield. Note subcircular sternal shield (Arrow).

opencc-by-4.0Aug 2018View details →

Fig. 2 in Trypanosome co-infections increase in a declining marsupial population

Fig. 2. The proportion of woylie captures detected with (a) T. copemani and (b) T. vegrandis in individual sampling trips across the study period (n = 32, 8, 20, 6, 14, 29, 37, 54, 31, 31, 21, 25, 25, 32, 15, 13, 2, 8, 13, 11, 9, 8), with the x-axis representing continuous time. Error bars represent 95% Jeffrey's confidence intervals of prevalence estimates. Overlaid on prevalence estimates are the capture rates (the number of independent captures as a proportion of the total number of traps set, derived from Wayne et al., 2015) for each of the sampling periods to indicate the woylie population trends over the same period.

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Fig. 3 in Trypanosome co-infections increase in a declining marsupial population

Fig. 3. The proportion of woylie captures detected with (a) T. copemani and (b) T. vegrandis across years (categorized into groups for plotting purposes: 2006–2007, 2008, 2009–2010, 2011–2012) for woylies that were either co-infected by the other trypanosome species (blue) or individuals not co-infected by the other trypanosome species (red). Error bars represent 95% Jeffrey's confidence intervals of prevalence estimates. Numbers above the x-axis represent the sample sizes for each group. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

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Fig. 1. A in Trypanosome co-infections increase in a declining marsupial population

Fig. 1. A map of Australia indicating the location of Keninup (our sampling site), with the location of Perth provided for reference.

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Figure 2 in Declining populations of Chukar Partridge (Alectoris chukar) in Bulgaria

Figure 2. Distribution of the Chukar Partridge (Alectoris chukar) in Bulgaria since 1990. Background color of square: gray – nesting sites during 1990–2005 (Iankov, 2007); shaded square – protected zones, Natura 2000.

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Figure 1 in Declining populations of Chukar Partridge (Alectoris chukar) in Bulgaria

Figure 1. Study area and planned transects to determine the number of breeding pairs of Chukar Partridge (Alectoris chukar) in Bulgaria.