Ptilocercus Research Articles

Aspects of masticatory form and function in common tree shrews, Tupaia glis.

Tree shrews have relatively primitive tribosphenic molars that are apparently similar to those of basal eutherians; thus, these animals have been used as a model to describe mastication in early mammals. In this study the gross morphology of the bony skull, joints, dentition, and muscles of mastication are related to potential jaw movements and cuspal relationships. Potential for complex mandibular movements is indicated by a mobile mandibular symphysis, shallow mandibular fossa that is large compared to its resident condyle, and relatively loose temporomandibular joint ligaments. Abrasive tooth wear is noticeable, and is most marked at the first molars and buccal aspects of the upper cheek teeth distal to P2. Muscle morphology is basically similar to that previously described for Tupaia minor and Ptilocercus lowii. However, in T. glis, an intraorbital part of deep temporalis has the potential for inducing lingual translation of its dentary, and the large medial pterygoid has extended its origin anteriorly to the floor of the orbit, which would enhance protrusion. The importance of the tongue and hyoid muscles during mastication is suggested by broadly expanded anterior bellies of digastrics, which may assist mylohyoids in tensing the floor of the mouth during forceful tongue actions, and by preliminary electromyography, which suggests that masticatory muscles alone cannot fully account for jaw movements in this species.

Body Temperature and Oxygen Consumption of the Pentail Tree Shrew (Ptilocercus lowii)

Journal Article Body Temperature and Oxygen Consumption of the Pentail Tree Shrew (Ptilocercus lowii) Get access G. C. Whttow, G. C. Whttow Departments of Physiology and Zoology, University of Malaya, Kuala Lumpur, Malaysia Search for other works by this author on: Oxford Academic Google Scholar E. Gould E. Gould Departments of Physiology and Zoology, University of Malaya, Kuala Lumpur, Malaysia Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 57, Issue 4, 10 December 1976, Pages 754–756, https://doi.org/10.2307/1379447 Published: 10 December 1976 Article history Received: 05 November 1975 Accepted: 09 February 1976 Published: 10 December 1976

Coccidia of Malaysian mammals: new host records and descriptions of three new species of Eimeria.

SYNOPSIS. In a survey of parasites of wild mammals of Malaysia 3 new species of Eimeria were found. Eimeria tupaiae sp. n. is described from the common tree shrew, Tupaia glis. Its ellipsoidal to spherical, 3‐layered oocysts average 20 × 19 μm. A micropyle is absent; an oocyst residuum and polar granule are present. Ellipsoidal sporocysts average 11 × 7 μm. A sporocyst residuum and Stieda body are present. Eimeria ptilocerci sp. n. is described from the pen‐tail tree shrew, Ptilocercus lowii. The ellipsoidal to spherical, 2‐layered oocysts average 23 × 20 μm. A micropyle and oocyst residuum are absent; polar granules are present. The ellipsoidal sporocysts average 13 × 7 μm. A sporocyst residuum and Stieda body are present. Eimeria muuli sp. n. is described from the pencil‐tailed tree mouse, Chiropodomys gliroides. The ellipsoidal single‐layered oocysts average 25 × 19 μm. A micropyle and oocyst residuum are absent; a polar granule is present. The ellipsoidal sporocysts average 13 × 8 μm. A sporocyst residuum and Stieda body are present. In addition, new host records are reported as follows: E. miyairii Ohira from Whitehead's rat Rattus whiteheadi and the Malaysian wood rat, R. tiomanicus; E. separata Becker & Hall from Mueller's rat, R. muelleri, the chestnut rat, R. fulvescens, and the Malaysian wood rat, R. tiomanicus; E. nieschulzi Dieben from the red spiny rat, R. surifer and the chestnut rat, R. fulvescens; and E. callosciuri Colley from the grey‐bellied squirrel, Callosciurus caniceps and the black‐banded squirrel, C. nigrovittatus.

On the Anatomy of the Pen‐tailed Tree‐Shrew (Ptilocercus lowii.)

Proceedings of the Zoological Society of LondonVolume 96, Issue 4 p. 1179-1309 On the Anatomy of the Pen-tailed Tree-Shrew (Ptilocercus lowii.) W. E. Le Gros Clark F.R.C.S., F.Z.S., W. E. Le Gros Clark F.R.C.S., F.Z.S.Search for more papers by this author W. E. Le Gros Clark F.R.C.S., F.Z.S., W. E. Le Gros Clark F.R.C.S., F.Z.S.Search for more papers by this author First published: December 1926 https://doi.org/10.1111/j.1096-3642.1926.tb02241.xCitations: 92AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume96, Issue4December 1926Pages 1179-1309 RelatedInformation

Relationship of the Tupaiidae and of Eocene Lemurs, especially Notharctus

Introduction When my friend Mr. C. W. Beebe was in Borneo he made persistent efforts to secure for me specimens of the rare pen-tailed tree-shrew (Ptilocercus lowii). Failing in this, he obtained the loan of a skin and skeleton of this animal from the Rajah of Sarawak, and these he has very kindly intrusted to me for study and description. Ptilocercus and its ally, Tupaia, together constituting the family Tupaiidse of the suborder Menotyphla, are of peculiar interest, because they appear to bridge over to some extent the gap that separates Insectivores from Primates. They are arboreal in habit, and Tupaia is said to be lively, active, and squirrel-like, both in appearance and in habit. Certain anatomical resemblances shown by Tupaia to the Lemurs have been noted from time to time by various authors, but until recently the Tupaiids have been studied far less thoroughly than other families of Insectivores. . . .