Locomotion of the coelacanth Latimeria chalumnae in its natural environment

  title={Locomotion of the coelacanth Latimeria chalumnae in its natural environment},
  author={Hans W. Fricke and Olaf Reinicke and Heribert Hofer and W. Nachtigall},
The coelacanth Latimeria chalumnae is the only living relic of a fossil group of crossopterygian lobe-finned fish1–4. We describe observations of its locomotion in a natural environment using six individuals observed from the research submersible Geo in the Indian Ocean at a depth of between 117 and 198 m. Past speculation on the pattern of locomotion has included crawling with the paired fins on the rocky ocean bottom, stalking like a large piscivorous grouper, or even fast swimming in open… 
Locomotion, fin coordination and body form of the living coelacanth Latimeria chalumnae
A primary swimming function for the primitive sarcopterygian fin is indicated and earlier evolutionary assumptions of a more open-water life style of coelacanth fishes are confirmed.
Feeding ecology and evolutionary survival of the living coelacanth Latimeria chalumnae
The activity pattern, feeding behaviour, prey abundance and hunting success of the coelacanth is studied to evaluate possible links between environmental conditions, feeding ecology and evolutionary success of this ancient fish.
New Insights About the Behavioral Ecology of the Coelacanth Latimeria chalumnae Video Recorded in the Absence of Humans Off South Africa
An extensive analysis of the footage led to an interesting discovery that the first dorsal fin angle of the coelacanth corelated with the presence-or-absence of a large shark that frequently passed through the cave, showing that the dorsal fin is in a folded position during a steady relaxed state of the fish and it can be unfolded in response to external stimuli.
A fiftieth anniversary reflection on the living coelacanth, Latimeria chalumnae: some new interpretations of its natural history and conservation status
For this year's 50th anniversary of the famous discovery of the first living coelacanth, retraced the routes and visited the main actors of this zoological drama, facilitated by novel interpretation of earlier data and expeditions to the Comoro Islands.
Home range and migrations of the living coelacanth Latimeria chalumnae
Large home ranges and highly mobility in a topographically narrow habitat apparently favoured inbreeding of the small local island population.
Habitat requirements of the living coelacanth Latimeria chalumnae at grande comore, Indian Ocean
The seminal receptacles were removed, fixed in Bouin, embedded in paraff in , and serial sections at 3 8/zm were prepared, demonstrating that sperm of different males is stored and selection should favor mechanisms in males to give their own sperm priority.
The ecology and conservation of the coelacanth Latimeria chalumnae
SynopsisStudies on the ecology of the living coelacanth, Latimeria chalumnae, are reviewed and assessed. Early predictions on the life history of the coelacanth have proved to be accurate but recent
Observation of the first juvenile Indonesian coelacanth , Latimeria menadoensis from Indonesian waters with a comparison to embryos of Latimeria chalumnae
Clear differences in the first ontogenetic stages of the two species, although adults have almost the same morphological features are indicated, are indicated.
The population biology of the living coelacanth studied over 21 years
It appears that coelacanth recruitment in the observation areas occur mainly by immigrating adults, and it is estimated that the mean numbers of deaths and newcomers are 3–4 individuals per year, suggesting that longevity may exceed 100 years.
A Fork-Tailed Coelacanth, Rebellatrix divaricerca, gen. et sp. nov. (Actinistia, Rebellatricidae, fam. nov.), from the Lower Triassic of Western Canada
An unusual fork-tailed coelacanth from the Lower Triassic Sulphur Mountain Formation of British Columbia, Canada, marks the first considerable departure in actinistian body form since the Mississippian Period, and is unique among coelacanths in its possession of a bifurcated caudal fin, reduced segmentation of fin rays, and fusion of caudals.


Observations on a Living Coelacanth
DURING the recent Franco–British–American expedition to the Comoro Islands at the north end of the Mozambique channel we had the opportunity to observe a living coelacanth. The fish, a small specimen
Fast-start Performance and Body Form in Seven Species of Teleost Fish
Fast-start kinematics and performance were determined for Etheostoma caeruleum, Cottus cognatus, Notropis cornutus, Lepomis macrochirus, Perca flavescens, Salmo gairdneri and a hybrid Esox sp. at an
A multiple origin of the amphibian level is regarded as probable, and this view is supported by the diversity of the earliest known amphibian groups.
  • K. Thomson
  • Biology, Geology
    Biological reviews of the Cambridge Philosophical Society
  • 1969
1. Interpretation of structural evolution in a group such as the Sarcopterygii requires consideration of a combination of all possible functions, rather than single functions.
Early tetrapods converge on Stegocephalia and allied groups in early Carboniferous time and these and the Devonian fishes are the key‐material.