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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Electromyography and mechanics of mastication in the springhare, Pedetes capensis (Rodentia, Pedetidae).

M OFFERMANS and F DEVREE (1993)

Electromyography and mechanics of mastication in the springhare, Pedetes capensis (Rodentia, Pedetidae).

BELGIAN JOURNAL OF ZOOLOGY, 123(2):231-261.

In springhares, Pedetes capensis (FORSTER, 1778) ingestion, transport and mastication of food are cyclic events. During these cycles, the movement of the lower jaw shows no lateral component and the activity of all muscles is bilaterally symmetrical. The temporal muscles reach a peak activity during the fast-closing stage. During the reduction stages, peak activities are subsequently reached in the maxillomandibular muscles, the medial pterygoids, the masseters, the zygomaticomandibular muscles, the posterior masseters, and the lateral pterygoids in order. During fast opening, only the digastrics fire bilaterally. Magnitude and duration show some variation for the different types of food offered. The maxillomandibular muscle reaches its maximum activity whenever the animals feed on groundnut. Food that does not require biting (i.e. rolled oats), produces very low muscle activity. The Rodentia include groups with a similar gross muscular morphology but considerable differences in their masticatory patterns, whereas members of different major groups show similar masticatory patterns. Although the masticatory patterns shown by Rattus and Pedetes are similar, the forces acting on their lower jaws differ. In Pedetes the masseter-complex is more important than in Rattus as the bite force at the incisors is 68\% of the estimated muscle resultant.

MASTICATION; JAW MUSCLES; ELECTROMYOGRAPHY; BIOMECHANICS; RODENTS; PEDETES
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
1903-1923
​Annales de la Société royale malacologique et zoologique de Belgique
 
1923-1989
Annales de la Société Royale Zoologique de Belgique
 
1989-
Belgian Journal of Zoology