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Heterochronies in skull development of Lake Tana large African barbs (Labeobarbus; Cyprinidae; Teleostei)
Ist Teil von
Journal of applied ichthyology, 2012-06, Vol.28 (3), p.406-410
Ort / Verlag
Oxford, UK: Blackwell Publishing Ltd
Erscheinungsjahr
2012
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Summary
Large African barbs (genus Labeobarbus) of Lake Tana (Ethiopia) form a species flock, which includes 15 species differing in biology, ecology, and shape features, including skull proportions. Early craniogenesis was studied in three species of Lake Tana barbs: L. intermedius, a proposed ancestor of Tana species flock, L. brevicephalus, a small‐sized and early‐maturating barb, and L. megastoma, a large‐sized, piscivorous species. The general sequence of cranial cartilage and bone appearance is the same for the barb species studied. However, they differ greatly in temporal pattern of craniogenesis. As compared to L. intermedius, bony skull development is accelerated relative to chondrocranial development in L. brevicephalus and retarded in L. megastoma. These differences in temporal pattern of craniogenesis are proposed to account for the different cranial proportions displayed by these barbs.
Sprache
Englisch
Identifikatoren
ISSN: 0175-8659
eISSN: 1439-0426
DOI: 10.1111/j.1439-0426.2012.01993.x
Titel-ID: cdi_proquest_journals_1554476159
Format
–
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