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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.

Figure 6 in Initiation and early development of the postcanine deciduous dentition in the dasyurid marsupial Dasyurus viverrinus

Figure 6. Dasyurus albopunctatus pouch young: a, (AMNH 190927; 36.64 mm skull length). Erupting teeth in the upper jaw with canine about ½ erupted. The dP1 is almost completely erupted and P3 is in early eruption. A tiny, slender dP3 is lying on the distal margins of the erupting P3, pointing posteriorly; its apex is not evident. M1 is erupted and the M2 is about ¾ erupting (not shown); b, (AMNH 221650; 37.53 mm skull length) slightly older than the preceding. The dP1 is erupted in the upper jaw and P3 is erupting (½–⅔). A tiny, elongate dP3 is evident along the posterior margins of the erupting P3; c, (BBM – NG 28247; 37.89 mm skull length). The dP1 is erupted, and the P3 is almost completely erupted in the upper jaw. A tiny, slender and elongate dP3 is evident along the distal margin of P3 and its root extends distally beneath the anterior opening of the infraorbital canal; d, (BBM – NG 97868; 47.25 mm skull length). In this older young, the P3 is almost completely erupted in the upper jaw. A tiny, slender root remnant of dP3 is evident, distal to the buccal end of P3.

Figure 4 in Initiation and early development of the postcanine deciduous dentition in the dasyurid marsupial Dasyurus viverrinus

Figure 4. Parasagittal section through the dentition in a 25-day-old pouch young (12.5 mm head length) showing the developing teeth between dP1 and M2 in the upper jaw. Arrowhead refers to the site of the missing dP2. Abbreviation: D, location of developing dP3 follicle.

Figure 2 in Initiation and early development of the postcanine deciduous dentition in the dasyurid marsupial Dasyurus viverrinus

Figure 2. Transverse sections of early developmental stages of the dentition in marsupials: a, early tooth bud forming from the dental lamina; b, early-cap stage; c, middle-bell stage with elongate dental lamina; d, late-bell stage with odontoblasts and early lingual successional lamina; e, well-developed late-bell stage with dentin and enamel. A successional early-cap stage develops from the lingual successional lamina, showing early fragmentation of the dental lamina. Abbreviations: AM, ameloblasts; D, dentin; DL, dental lamina; DP, dental papilla; E, enamel; IEE, inner enamel epithelium; OD, odontoblasts; OEE, outer enamel epithelium; SL, successional lamina; SR, stellate reticulum; TB, tooth bud.

Figure 1 in Initiation and early development of the postcanine deciduous dentition in the dasyurid marsupial Dasyurus viverrinus

Figure 1. Four early pouch young of Dasyurus viverrinus: a, 30 hours old, 3.25 mm head length (HL); b, 5–6 days old, 4.5 mm HL; c, 14 days old, 8 mm HL; d, 25 days old, 12.5 mm HL.

Figure 3 in Initiation and early development of the postcanine deciduous dentition in the dasyurid marsupial Dasyurus viverrinus

Figure 3. Transverse section through the head at the level of the developing eyes in a 10-day-old Dasyurus viverrinus embryo (7 mm head length). Note the close compression between the large tongue (T) and the nipple (N). No developing teeth are evident.

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Figure 5 in Initiation and early development of the postcanine deciduous dentition in the dasyurid marsupial Dasyurus viverrinus

Figure 5. Dasyurus albopunctatus pouch young (AMNH 195149, 12 mm head length). Scale bar is 5 mm.