Abstract
There are many reports about thelastomatid parasitic nematode isolated from different species of cockroaches in many countries, without any clear information about those nematodes that are associated with Polyphaga aegyptiaca until now, so we have examined the nematodes were recovered from P. aegyptiaca and collected from Sharkia Gov., Egypt. Hammerschmidtiella diesingi and Leidynema appendiculata were found with the high infection rates in P. aegyptiaca. The results indicated that the prevalence of cockroaches infected with H. diesingi alone or integrated with another species was (51%), similarly, L. appendiculata was (65%) from total cockroaches. The mean intensity of L. appendiculata was higher than H. diesingi the current of cockroaches. The gravid females of both H. diesingi and L. appendiculata were also higher than of any other stage of nematodes. Finally, using light and electron microscope, in order to identify and determine the morphological characteristics of both species of nematode. Results also indicated that SEM is a powerful tool to identify the morphological characteristics such as head, female cephalic region, vulva, tail, anus, male cloaca area and papillae.
Highlights
There are currently around 4,500 species of cockroaches on the globe, of which only are associated or adapted to environments transformed by humans Beccaloni & Eggleto (2011)
A total of (49) Cockroach dissected, (38) Cockroach infected by the nematode, (6) Cockroach infected by only H. diesingi, (13) Cockroach infected by only L. appendiculata and (19) Cockroach infected by both species of nematodes
Dissection results of 38 cockroaches indicated that they were infected with two types of nematodes; H. diesingi. and L. appendiculata
Summary
There are currently around 4,500 species of cockroaches on the globe, of which only are associated or adapted to environments transformed by humans Beccaloni & Eggleto (2011). Polyphaga aegyptiaca (L.) is one of the most widely distributed of these large species Grandcolas (1994). It is an uncommon cockroach that lives in desert or semi-desert environments and spread in African and Asian countries Beccaloni & Eggleton (2013). P. aegyptiaca commonly called the Egyptian desert roach and was observed in rock shelters in desert locations, each cavity harbored a small population. These groups generally included a few adults with larvae. Oothecae were found in the sand and they were made up to 12 eggs Grandcolas (1996)
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