Isoodon fusciventer

Smales, L. R., Wood, J. A. L. & Chisholm, L. A., 2024, A review and comparison of the nematode assemblages of the Australian golden bandicoot, Isoodon auratus, the quenda, I. fusciventer and southern brown bandicoot, I. obesulus (Peramelidae), from material held in the south Australian museum, International Journal for Parasitology: Parasites and Wildlife 24, pp. 100938-100938 : 100938-

3.3. The nematode communities of I. fusciventer and I. obesulus

The most prevalent species in the nematode community of I. fusciventer were the ascaridids Linstowinema inglisi with a remarkable 100 % prevalence and Labiobulura inglisi with 84.1 % prevalence followed by Asymmetracantha tasmaniensis with 25.4 % of hosts infected. Labiobulura inglisi , with 66.3 %, was the most prevalent species in the nematode community of I. obesulus followed by Linstowinema cinctum 28.2 % and Li. tasmaniense with 20.7 % prevalence ( Tables 4 and 5). Isoodon obesulus had the most speciose community with 14 identified

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Nematode AHC Registration State Site in Prevalence

Number Host %

Ascaridida

Heterakidae

Heterakis sp. 16488 Tas small 1.1

intestine

Seuratidae

Linstowinema cinctum 4413, NSW, small 28.2 Linstow, 1898 30291–30296, SA, intestine

30298, 30301, Tas,

30303, 30304, Vic

32872, 33280,

42932, 44309,

44940, 45619,

46106, 47833,

47911, 48495,

48962–48964,

49251, 49275

Linstowinema 4458, 4530, SA, Tas small 20.7 tasmaniense 6929, 30300, intestine

Smales, 1997 30302,

30305–30315,

30320, 30321,

33279

Linstowinema 4446, 4460, SA, Vic small 6.5 warringtoni Smales 4461,30297, intestine

1997 30299, 32872

Linstowinema sp. 9162, 27967, SA, small 3.3

33274 Tas, intestine

Vic

Subuluridae

Labiobulura inglisi 2929, 3317, Nuyts caecum, 66.3

Mawson (1960); 3343, 3346, Arch., colon,

Quentin, 1969 4781, 4895, SA, small

Mawson (1960) 5375–5377, Tas, intestine should not be 5379, 6930, Vic,

linked to ref list 8393, 8416,

13719, 16460,

16485, 16486,

16489, 21127,

21129, 21131,

23002, 26199,

33141–33149,

33156–33158,

33160,

33176–33181,

33196, 33197,

33246–33248,

33273, 33278,

33281, 33289,

41462, 44310,

46105, 47835,

47836,

47889,47909,

48494, 49255,

49360

Enoplida

Capillariidae

Spratt (2006) Should 32304 Tas small 1.1

not be linked to intestine reference listmEucoleus parvulus Spratt

(2006)

Eucoleus 32323, 32332 NSW small 2.2 pseudoplumosus intestine

Spratt (2006)

Eucoleus sp. 3335, 3352, SA, Tas small 5.4

16488, 26200, intestine,

27950, stomach

Capillaria s. l. 33174 Tas stomach

Trichuridae 1.1

Baylis (1932) Should 3336, 6928, Tas, 8.7

not be linked to 33159, 44916, Vic

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species compared with 8 for I. fusciventer . The only species to occur in both hosts were the dromeostrongylid Peramelistrongylus skedastos and the mackerrastrongylid A. tasmaniensis . Although eight genera were shared across the two hosts, the species profile for each genus differed. For example, the genus Linstowinema included the species Li. cinctum , Li. tasmaniense and Li. warringtoni in I. obesulus compared with Li. inglisi and Li. quentoni in I. fusciventer . Comparisons between the nematode communities of the subspecies of I. obesulus ( Table 7) showed few differences in the species composition of their nematode communities. That only one species was collected from each of I. o. nauticus and I. o. obesulus from Kangaroo Island is likely a consequence of small host sample size rather than being an indicator of a depauperate island community.

Sorensen’ s indices of similarity between I. fusciventer and I. macrourus , I. fusciventer and I. obesulus and I. obesulus and I. macrourus (data for I. macrourus from Smales et al., 2023a), calculated using the fully identified species, were 17.1 %, 27.2 %, and 39.0 % respectively, indicating that the species composition of the three nematode communities were not similar, less than half the species being shared. The nematode community of I. fusciventer showed few similarities with that of either I. obesulus or I. macrourus . When genera were considered, however, the indices of 55.1 %, 72.7 % and 51.6 % respectively indicated that the generic composition of the three nematode communities had more in common. Isoodon fusciventer and I. obesulus (73 % shared genera) were the most similar and I. obesulus and I. macrourus (52 %) the least similar.