Adelina schellacki n.sp., a coccidium from the intestine of the Indian centipede Cormocephalus dentipes poc..
01 Nov 1940-Parasitology (Cambridge University Press)-Vol. 32, Iss: 04, pp 392-396
TL;DR: From 1931 to the middle of 1936 the authors occasionally examined the gut contents of the centipede Cormocephalus dentipes, procured from Calcutta and its suburbs, and often found a coccidium belonging to the genus Adelina.
Abstract: From 1931 to the middle of 1936 we occasionally examined the gut contents of the centipede Cormocephalus dentipes , procured from Calcutta and its suburbs. In the intestine we have often found a coccidium belonging to the genus Adelina . Species of Adelina are on record from arthropod and annelid hosts; but since Schellack (1913) described in detail the life history of A. dimidiata from Scolopendra cingulata , no account of any other species from a myriapod has been given.
TL;DR: Two new coccidian species of the genus Adelina are described by means of light and phase contrast microscopy, parasitizing the oribatid mite Nothrus silvestris and the springtail Neanura muscorum, both of which infect the fat body of host-animals.
Abstract: Summary Two new coccidian species of the genus Adelina: Adelina acarinae parasitizing the oribatid mite Nothrus silvestris, and Adelina collembolae parasitizing the springtail Neanura muscorum are described by means of light and phase contrast microscopy. The parasites infect the fat body of host-animals. Some ultrastructural features of early sporocysts of A. acarinae are also discussed. The occurence of infections varied with biotopes, 2–10 % for N. silvestris and 2–6 % for N. muscorum. High infection rates, 20% for N. silvestris and 10% for N. muscorum were recorded at localities with high SO2-loads in Federal Republic of Germany, Silberborn (Lower Saxony) and Siegerland (Westphalia). The natural populations of oribatid mites and springtails in Spain and Austria were found free of infection.
01 Oct 1977
TL;DR: The morphology and sporogony of a coccidian, Adelina rayi n.
Abstract: The morphology and sporogony of a coccidian,Adelina rayi n. sp. from the gut of the centipede,Rhysida longipes are described. Two types of schizogony have been observed. The macroschizonts which develop just below the basement membrane and beyond the level of nuclei of the midgut epithelium grow to a maximum size of 25·0–30·0×20·0–25·0µm and produce 80–100 merozoites. Each macromerozoite measures 12·0–13·0×1·57–2·0µm with a centrally placed nucleus. The nucleus is surrounded by a delicate nuclear membrane and has numerous small chromatin granules attached to the inner wall in addition to a single slightly larger chromatin granule placed in the centre. The microschizont reaches a maximum size of 13·0–15·0×7·0–8·0µm and produces 16 merozoites. It develops in the midgut epithelium below the level of the host cell nuclei. Each micromerozoite measures 9·6–10·6 × 1·5–2·0µm. The nucleus is centrally placed and is surrounded by a delicate nuclear membrane. The chromatin is in the form of numerous granules attached to the inner wall. No centrally placed chromatin granule in the nucleus has been observed. Association between the gametocytes occurs in the nucleus stage. The macrogametocyte reaches a maximum size of 18·0×15·0µm and the microgametocyte a maximum of 15·0×4·0µm. The microgametocyte gives rise to 4 deeply stained comma-shaped microgamates. Oocysts measure 20·0–22·0×18·0–20·0µm. They are octosporous and dizoic. The sporozoites measure 12·0–14·0×2·0–2·5µm.
TL;DR: The ophthalmoscope may be made available not only to determine the nature of any defect of vision of which the patient may complain, but as a means of reading within certain limits changes in the conditions of the system at large, and of the nervous system in particular.
Abstract: THE advances that have been made in the knowledge of the diseases of the eye since the introduction of the ophthalmoscope are now very widely known, not alone in the medical profession but to the general public. This little instrument, essentially consisting of a mirror with a hole in the centre by which a ray of light can be thrown into the interior of the eye, lighting up its recesses, and enabling, with the aid of a common hand lens, almost every portion of it to be explored, may be said to have revolutionised the surgery of the eye. Many separate and distinct types of disease have been distinguished in conditions that were formerly grouped together under the general term of amaurosis, and the ophthalmic surgeon, no longer administering, as was too often formerly the case, his remedies in rash ignorance, is now able either to infuse well-grounded hope of recovery, or to spare his patient the annoyance of protracted treatment when treatment would be hopeless. For nearly twenty years the use of the ophthalmoscope has been, as was natural, almost entirely restricted to those who devoted themselves to the study of ophthalmic diseases. Like other mechanical aids to diagnosis, as the stethoscope and laryngoscope, its employment requires practice, the opportunities for acquiring a mastery over it were till recently rare, and its value in the practice of medicine was by no means generally recognised. Within the last few years, however, several excellent surgeons and physicians, amongst whom Mr. Hutchinson, Dr. Hughlings Jackson, Dr. John Ogle, and the author of the treatise before us may be especially mentioned, have gradually begun to recognise that the ophthalmoscope may be made available not only to determine the nature of any defect of vision of which the patient may complain, but as a means of reading within certain limits changes in the conditions of the system at large, and of the nervous system in particular. On the Use of the Ophthalmoscope in Diseases of the Nervous System and of the Kidneys; also in certain other General Disorders. By Thomas Clifford Allbutt, Cantab. &c. (London and New York: Macmillan and Co., 1871.)