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Revision of the muscular anatomy of the paired fins of the living coelacanth Latimeria chalumnae (Sarcopterygii: Actinistia)
- Source :
- Biological Journal of the Linnean Society, Biological Journal of the Linnean Society, Linnean Society of London, 2021, ⟨10.1093/biolinnean/blab047/6261035⟩
- Publication Year :
- 2021
- Publisher :
- Oxford University Press (OUP), 2021.
-
Abstract
- As a sarcopterygian fish, the extant coelacanth Latimeria has muscular paired fins, different in their skeletal and muscular anatomy from the paired fins of actinopterygians. Although the muscular anatomy of the pectoral and pelvic fins of Latimeria has been described by several studies, a detailed functional description of the muscles and their architecture has never been performed. Our detailed functional description of the muscles of the paired fins shows a more complex organization than previously described. The pectoral and pelvic fins have a different organization of their muscular anatomy, and the pelvic fin shows a more plesiomorphic configuration of the muscles since most of them are poly-articular and run from the pelvic girdle to the fin rays, an organization typical of actinopterygians. We found that the pectoral fins are stronger than the pelvic fins which is likely to be associated with the greater contribution of the pectoral fins to locomotion and manoeuvring. Finally, the study of the joint mobility of the paired fins showed that the pectoral fins show greater mobility than the pelvic fins. The reduced mobility of the pelvic fin is possibly a consequence of the morphology of the mesomeres and the large pre-axial radials.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Sarcopterygii
endocrine system
animal structures
Pelvic girdle
Fin
biology
[SDV]Life Sciences [q-bio]
Latimeria
Actinistia
Reduced mobility
Anatomy
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Functional description
body regions
03 medical and health sciences
030104 developmental biology
embryonic structures
human activities
Coelacanth
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 10958312 and 00244066
- Volume :
- 133
- Database :
- OpenAIRE
- Journal :
- Biological Journal of the Linnean Society
- Accession number :
- edsair.doi.dedup.....8537d8a19b0c156bae8a83ad9a690f4f