Functional and phylogenetic implications of the vesicular swimbladder of Hemiramphus and Oxyporhamphus convexus (Beloniformes: Teleostei)

Tibbetts, Ian R., Collette, Bruce B., Isaac, Robert and Kreiter, Philip (2007) Functional and phylogenetic implications of the vesicular swimbladder of Hemiramphus and Oxyporhamphus convexus (Beloniformes: Teleostei). Copeia, 2007 4: 808-817. doi:10.1643/0045-8511(2007)7[808:FAPIOT]2.0.CO;2


Author Tibbetts, Ian R.
Collette, Bruce B.
Isaac, Robert
Kreiter, Philip
Title Functional and phylogenetic implications of the vesicular swimbladder of Hemiramphus and Oxyporhamphus convexus (Beloniformes: Teleostei)
Formatted title
Functional and phylogenetic implications of the vesicular swimbladder of Hemiramphus and Oxyporhamphus convexus (Beloniformes: Teleostei)
Journal name Copeia   Check publisher's open access policy
ISSN 0045-8511
1938-5110
Publication date 2007-12
Sub-type Article (original research)
DOI 10.1643/0045-8511(2007)7[808:FAPIOT]2.0.CO;2
Volume 2007
Issue 4
Start page 808
End page 817
Total pages 10
Editor J. F. Webb
Place of publication Miami, FL, United States
Publisher American Society of Ichthyologists and Herpetologists
Language eng
Subject 060301 Animal Systematics and Taxonomy
Formatted abstract
Dissection and histological analyses revealed the swimbladder of Hemiramphus far and H. robustus to comprise a matrix of discrete, gas-filled vesicles of 1–6 mm in diameter. The vesicles are not richly vascular and no discrete capillary bed organs were found. The anterior and posterior ends of the swimbladder have asymmetric projections that extend rostrad and caudad, respectively. These projections and some surrounding fatty tissue contain what we term protovesicles, which have thick walls that we infer expand to become the thin-walled vesicles of the main vesicular swimbladder. Dissection of museum specimens of other species of Hemiramphus and Oxyporhamphus convexus confirmed the presence of a vesicular swimbladder. However, examination of museum specimens of other hemiramphids, including O. micropterus, and flyingfishes revealed only a simple sac-like swimbladder. Presence of this unusual swimbladder in two genera within the same family is indicative of a strong synapomorphy that, in conjunction with recent molecular data, suggests that Hemiramphus and Oxyporhamphus convexus are closely related.
Keyword Fish
Histology
Molecular analysis
Morphology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 10 Feb 2009, 15:49:20 EST by Mary-Anne Marrington on behalf of Centre for Marine Studies