|Chondrocranium morphology of northern Red Sea triakid sharks and relationships to feeding habits|
In: Journal of Fish Biology. Fisheries Society of the British Isles: London,New York,. ISSN 0022-1112; e-ISSN 1095-8649
Iago omanensis (Norman, 1939) [WoRMS]; Mustelus mosis Hemprich & Ehrenberg, 1899 [WoRMS]; Triakidae Gray, 1851 [WoRMS]
Triakidae;Iago omanensis;Mustelus mosis;neurocranium, diet;teeth;Red Sea
|Auteurs|| || Top |
- Waller, G.N.H.
- Baranes, A.
The structure of the neurocranium, mandibular arch and hyoid arch of I. omanensis (Norman) and M. mosis Hemprich & Ehrenberg is described. Comparisons between these species and other triakids and between triakids and carcharhinoids are given. Differences in the size, weight and structure of the mandibular arch, including its associated ligaments and jaw suspension, are shown to be related to feeding habits. Dental characters for both species are examined and differences are considered in relation to diet. Structural elaborations of the nasal capsules in I. omanensis are described in relation to protrusion of the upper jaw during biting. Comparable neurocranial features are poorly developed in M. mosis where the upper jaw shows little discernable anterior movement. The optic region is enlarged in both species in relation to nasal and otic areas of the neurocranium.