Full resolution (JPEG) - On this page / på denna sida - Contributions to the Biology and Morphology of Spiroptera (Gongylonema) Neoplastica n. sp.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
Experiments have thus shown that Blatta germanica as well is able to serve as a
host to the nematode.
In order to ascertain whether the nematode might be able to use the Tenehrio
molitor (weal-worm) as a host in the same way as the Spiroptera ohtusa, the following
experiments were made:
A great number of larvæ and fuUy developed specimens of Tenehrio molitor from
the ^Ve — V7 1911 were fed daily on fæces containing eggs, originating from wild brown
infected rats (from the sugar-refmery). Likewise another number of Tenehrio molitor
were fed daily from the ^’"/b — ^^/s 1912.
On examination of some Tenehrio molitor about 2V/2 months after the beginning
of the feeding no Spiroptera could be found in the muscles.
Black and
white rats
number
Each rat fed on
Spiroptera found in
12
3
c. 112 fuUy developed beetles, pupæ and larvæ
c. 107 fuUy developed beetles, pupæ and larvæ
3 rats (in 2 one 9, in 1 one d")
1 — (one 9)
Total 15
4 rats
The rats were killed 19 — 136 days after the feeding
Control-experiments: Rats fed on non-infected weal-worms from the same locality
5
6
6
numerous beetles, pupæ and larvæ
300 beetles, pupæ and larvæ
525 - - —
Total 17
The rats were killed 13 — 42 days after the feeding
Experiments, thus, have shown that not only the cockroaches
{P. americana, P. orientalis and Blatta germanica) but also the Tenehrio molitor is
able to serve as a host to the Spiroptera in question.
As the nematode here dealt with has not been described before we propose
to give it the name Spiroptera neoplastica. The morphological examination of this
species made in the zoological museum of the University of Copenhagen by H. Dit-
levsen has given the following results.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
