Written in English
|Statement||by James George Wernz.|
|The Physical Object|
|Pagination||, 96 leaves, bound :|
|Number of Pages||96|
Observations on the function and structure of the tritosternum of selected mesostigmatid mites Public Deposited. Analytics × Add to Sagittal and transverse serial sections were made to determine the structure of the tritosternum. The tritosternum was found to be discontinuously hollow, typically semi-circular in cross section, and with a. Observations on the function and structure of the tritosternum of selected mesostigmatid mites. By. Abstract. Graduation date: Glyptholaspis americana (Berl.), G. confusa (Foa) and\ud deutonymphal Parasitus sp. were studied to determine the function\ud of the tritosternum. Studies were conducted on feeding, cleaning,\ud temperature and. Studies on the function of the tritosternum in selected Gamasida (Acari)' J. G. WERNZ~ AND G. W. KRANTZ Department of Entomology, Oregon State University, Corvallis, Oregon Observations on the feeding behavior of Parasitus coleoptratorum (L.) and Glyptholaspis americana (Berl.) revealed that the tritosternum functions in concert with the capitular groove of the gnathosoma as a fluid transport and grooming mechanism. Excess prey fluids overflowing into the postcapitular channel are redirected to the prebuccal region between the tritosternal laciniae and the.
Observations on the feeding behavior of Parasitus coleoptratorum (L.) and Glyptholaspis americana (Berl.) revealed that the tritosternum functions in concert with the capitular groove of the. The present Scanning Electron Microscopic (SEM) study includes morphological observations on male Echinolaelaps echidninus with particular attention to the undescribed details of its gnathosoma, palpal organ and pulvilli that have rarely described in males of superfamily Dermanyssoidea. The holoventral plate had 23 setae, including 5 pairs in sternogenital region, 5 pairs in preanal region and. Introduction. Mites are important group of arthropod pests affecting crops, animals and humans. The spiny rat mite, Echinolaelaps echidninus occurs throughout the world as a parasite of the Norway rat (brown rat), Rattus norvegicus and occasionally of other rodents (Keegan, ).E. echidninus received the attention of several authors since the start of twentieth century. This study explored the relationship between landscape-level factors (land use type) and the diversity of soil mites (Acari: Oribatida, Mesostigmata) at a within-site scale, using diversity measures including point diversity (local species diversity within a single sampling point), patterns of species turnover among the sampling points, and alpha diversity (total species richness in a habitat).
The effect of intercropping on the diversity of mesostigmatid soil mites was investigated in three types of citrus orchards of four selected districts in replicated field experiment. Measured parameters. A variety of physical, chemical and biological parameters were measured in and , as detailed below and in Table 1, and used to generate the model.. The visual soil structure assessment involved estimating the quality of topsoil structure using a spade method (Ball et al., ).Bulk density and water retention were measured using intact soil cores . Mesostigmatid mites in the family Phytoseiidae (body lengths typically ca. μm) express a condition called hypotrichy, essentially the loss of several setae from the body. It has been argued (Chant, ) that this is a paedomorphic trend in which the mites retain larval patterns of setation, which in turn may be related to reductions in. Fossil mesostigmatid mites are extremely rare. Inclusions assignable to the tortoise mites (Mesostigmata, Uropodina) are described here for the first time from Eocene (ca. 44–49 Ma) Baltic amber. This is the oldest record of Uropodina and documents the first unequivocal amber examples potentially assignable to the extant genus Uroobovella Berlese, (Uropodoidea: Urodinychidae). .