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Spiroxys chelodinae Berry, 1985 |
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Remark: within the material studied, 2 genetic forms ("form
1" and "form 2") were observed. Differences were observed in .... sequences:
...% of bp. Both forms appeared to be morphologically identical, excepting slight
differences in cuticle striation (see morphometry data below). No differences were
observed in distribution and specificity of the two forms.
Hosts and localities
Originally described from Chelodina longicollis, C. expansa
and C. oblonga from NSW, QLD, SA and WA; also from Papua New Guinea (Berry,
1985).
Present study:
| Host |
Locality |
| Chelodina burrungandjii |
Parry Creek Farm Billabong (WA)*;
Minah Creek (WA)* |
| Chelodina canni |
Armraynald Station (QLD) |
| Chelodina expansa |
Mungabareena Reserve (NSW)***;
Albury (NSW);
Kapunda, St. George (QLD) |
| Chelodina longicollis |
Tony Dam (NSW), Yass River, Tony Farm (NSW)**;
Balonne Hwy (QLD); Thruston (QLD) |
| Chelodina rugosa |
Leichardt Lagoon (QLD) |
| Elseya latisternum |
Moggill Ck, Brisbane (QLD); Lake Tinaroo (QLD)*;
Einasleigh River (QLD) |
| Emydura australis |
King River Pool (WA)** |
| Emydura macquarii |
Leslie Dam, Warwick (QLD) |
| Emydura tanybaraga |
Mango-big (NT) |
* - form 1; ** - form 2; *** - both forms.
Description
Morphology corresponds to that described in Berry
(1985).
Morphometry
Form 1
| Characters |
Males (n=4) |
Females (n=1) |
| Body length, mm |
16.517 - 27.278 |
28.041 |
| Body width at midlength, �m |
287 - 416 |
600 |
| Oesophagus length, mm |
2.813 - 3.765 |
3.616 |
| Distance to nerve ring, �m |
406 - 473 |
527 |
| Tail length, �m |
300 - 324 |
294 |
| Length of pseudolabia, �m |
37 - 48 |
46 |
| Maximum width of pseudolabia, �m |
80 - 108 |
112 |
| Spicule length, mm |
1.517 - 1.839 &
1.464 - 1.733 |
-- |
| Distance from anterior end to vulva, mm |
-- |
17.193 |
| Cuticular striations at midlength of body, �m |
4 - 6 |
5 |
| Cuticular striation at oesophageal-intestinal junction, �m |
3 - 6 |
3 - 6 |
Form 2
| Characters |
Males (n=2) |
Females (n=3) |
| Body length, mm |
23.092 - 23.851 |
28.116 - 31.782 |
| Body width at midlength, �m |
390 - 409 |
572 - 614 |
| Oesophagus length, mm |
3.011 - 3.122 |
3.416 - 3.610 |
| Distance to nerve ring, �m |
517 - 575 |
550 - 620 |
| Tail length, �m |
257 - 257 |
286 - 387 |
| Length of pseudolabia, �m |
44 - 44 |
46 - 51 |
| Maximum width of pseudolabia, �m |
99 - 101 |
109 - 119 |
| Spicule length, mm |
1.803 - 1.847 &
1.728 - 1.795 |
-- |
| Distance from anterior end to vulva, mm |
-- |
16.525 - 20.232 |
| Cuticular striations at midlength of body, �m |
6 - 7 |
7 - 8 |
| Cuticular striation at oesophageal-intestinal junction, �m |
4 |
4 |
Illustrations
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S. chelodinae, form 1. Head end, lateral view.
Scale bar - 0.1 mm |
S. chelodinae, form 1. Head end, dorso-ventral view.
Scale bar - 0.1 mm |
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S. chelodinae, form 2. Head end, lateral view.
Scale bar - 0.1 mm |
S. chelodinae, form 2. Head end, dorso-ventral view.
Scale bar - 0.1 mm |
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S. chelodinae, form 1. Anterior end, lateral view.
Scale bar - 0.5 mm |
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S. chelodinae, form 2. Female posterior end.
Scale bar - 0.5 mm |
References
Berry (1985)
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