Variation of hyoid morphology in geoemydid terrapins Susann Richter 1 , Markus Auer 2 , Uwe Fritz 2 , ∗ Abstract. The hyoid apparati of 25 geoemydid species in 16 genera (including aquatic, semiterrestrial and terrestrial taxa) are compared, and for Cuora galbinifrons bourreti ontogenetic

In: Amphibia-Reptilia

), and finally swallowing of the food (deglutition). The results show that in Testudo hermanni boettgeri the tongue is the main tool for food uptake and in- traoral manipulation. The hyoid apparatus supports the floor of the mouth and is adapted to the highly movable tongue. Compared to aquatic species

In: Netherlands Journal of Zoology

Animal Biology , Vol. 57, No. 3, pp. 339-357 (2007)  Koninklijke Brill NV, Leiden, 2007. Also available online - www.brill.nl/ab Ontogeny of the intermandibular and hyoid musculature in the suckermouth armoured catfish Ancistrus cf. triradiatus (Loricariidae, Siluriformes) TOM GEERINCKX

In: Animal Biology
Authors: J. De Visser and C.D.N. Barel

WORDS: cichlids, suction feeding, hyoid, suspensorium, head, morphospace, optimality model. INTRODUCTION The power and movements required for suction feeding in fish are provided by complex chains of muscles, ligaments and skeletal elements (for cichlids: ANKER, 1978a; BAREL, 1983; OTTEN, 1983). Using a

In: Netherlands Journal of Zoology
Author: Rui Diogo

© Koninklijke Brill NV, Leiden, 2008 DOI: 10.1163/157075608X328017 Animal Biology 58 (2008) 123–172 www.brill.nl/ab Comparative anatomy, homologies and evolution of mandibular, hyoid and hypobranchial muscles of bony fi sh and tetrapods: a new insight Rui Diogo 1, 2, * 1 Museo Nacional de

In: Animal Biology

the fringed turtle Chelus fimbriatus (Schneider, 1783) was studied to elucidate the feeding mechanics of an aquatic feeding specialist that has never been investigated in detail before, regarding gross morphology. The skull and hyoid apparatus as well as associated musculature were examined by

In: Amphibia-Reptilia

Morphology of premetamorphic larvae of Lysapsus limellus (Anura: Pseudinae) M.F. Vera Candioti Instituto de Herpetología, Fundación Miguel Lillo, 4000 Tucumán, Argentina e-mail:  orivc@hotmail.com Abstract. The chondrocranium, visceral skeleton, mandibular, hyoid and hyobranchial musculature

In: Amphibia-Reptilia

The present study examined the kinematic patterns of initial food uptake, food transport, pharyngeal packing and swallowing in the common musk turtle Sternotherus odoratus. These data are supplemented by morphological descriptions of the skull and the hyolingual complex. Although the hyoid is mainly cartilaginous, S. odoratus still use exclusively hydrodynamic mechanisms in prey capture and prey transport. The tongue is relatively small, with weakly developed intrinsic musculature. We propose that the elasticity of the hypoglossum and the hyoid body impacts the capability of S. odoratus to suction feed, but allows these turtles to effectively re-position the food items within the oropharyngeal cavity during transport, manipulation and pharyngeal packing. We standardised conditions in all feeding events by using food items of the same consistence and size, and by always offering the food at the same position at the bottom of the aquarium. Nonetheless, the measured kinematic values varied considerably. The duration of prey capture and prey transport cycles were relatively long in S. odoratus compared to other freshwater turtles studied so far. The initiation of hyoid retraction relative to the onset of jaw opening can be modulated not only in prey capture but also in prey transport cycles. In the common musk turtle, the jaw and hyoid movements apparently have a low level of integration.

In: Contributions to Zoology
Authors: P. Lemell and J. Weisgram

-speed films of the feeding on fish and snails. A descrip- tion of the anatomy of the feeding apparatus of the genus Pelusios has been done by ROMER (1956) and SCHUMACHER (1973), a short note on origin, insertion and course of some muscles of the jaw-hyoid-apparatus is given in the present study. MATERIALS AND

In: Netherlands Journal of Zoology
Author: G. Ch. Anker

THE MORPHOLOGY OF JOINTS AND LIGAMENTS IN THE HEAD OF A GENERALIZED HAPLOCHROMIS SPECIES: H. ELEGANS TREWAVAS 1933 (TELEOSTEI, CICHLIDAE) III. THE HYOID AND THE BRANCHIOSTEGAL APPARATUS, THE BRANCHIAL APPARATUS AND THE SHOULDER GIRDLE APPARATUS by G. CH. ANKER (Research-Group in Ecological

In: Netherlands Journal of Zoology