Buoyancy and hydrostatic balance in a West Indian Ocean coelacanth Latimeria chalumnae
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Buoyancy and hydrostatic balance in a West Indian Ocean coelacanth Latimeria chalumnae. / Lauridsen, Henrik; Pedersen, Jens Mikkel Hyllested; Ringgaard, Steffen; Møller, Peter Rask.
I: BMC Biology, Bind 20, 180, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Buoyancy and hydrostatic balance in a West Indian Ocean coelacanth Latimeria chalumnae
AU - Lauridsen, Henrik
AU - Pedersen, Jens Mikkel Hyllested
AU - Ringgaard, Steffen
AU - Møller, Peter Rask
N1 - Publisher Copyright: © 2022, The Author(s).
PY - 2022
Y1 - 2022
N2 - Background: Buoyancy and balance are important parameters for slow-moving, low-metabolic, aquatic organisms. The extant coelacanths have among the lowest metabolic rates of any living vertebrate and can afford little energy to keep station. Previous observations on living coelacanths support the hypothesis that the coelacanth is neutrally buoyant and in close-to-perfect hydrostatic balance. However, precise measurements of buoyancy and balance at different depths have never been made. Results: Here we show, using non-invasive imaging, that buoyancy of the coelacanth closely matches its depth distribution. We found that the lipid-filled fatty organ is well suited to support neutral buoyancy, and due to a close-to-perfect hydrostatic balance, simple maneuvers of fins can cause a considerable shift in torque around the pitch axis allowing the coelacanth to assume different body orientations with little physical effort. Conclusions: Our results demonstrate a close match between tissue composition, depth range and behavior, and our collection-based approach could be used to predict depth range of less well-studied coelacanth life stages as well as of deep sea fishes in general.
AB - Background: Buoyancy and balance are important parameters for slow-moving, low-metabolic, aquatic organisms. The extant coelacanths have among the lowest metabolic rates of any living vertebrate and can afford little energy to keep station. Previous observations on living coelacanths support the hypothesis that the coelacanth is neutrally buoyant and in close-to-perfect hydrostatic balance. However, precise measurements of buoyancy and balance at different depths have never been made. Results: Here we show, using non-invasive imaging, that buoyancy of the coelacanth closely matches its depth distribution. We found that the lipid-filled fatty organ is well suited to support neutral buoyancy, and due to a close-to-perfect hydrostatic balance, simple maneuvers of fins can cause a considerable shift in torque around the pitch axis allowing the coelacanth to assume different body orientations with little physical effort. Conclusions: Our results demonstrate a close match between tissue composition, depth range and behavior, and our collection-based approach could be used to predict depth range of less well-studied coelacanth life stages as well as of deep sea fishes in general.
KW - Bone mineral density
KW - Computed tomography
KW - Depth regulation
KW - Ecophysiology
KW - Fatty organ
KW - Headstand
KW - Lipid accumulation
KW - Magnetic resonance imaging
KW - Magnetic resonance spectroscopy
U2 - 10.1186/s12915-022-01354-8
DO - 10.1186/s12915-022-01354-8
M3 - Journal article
C2 - 35982432
AN - SCOPUS:85136120837
VL - 20
JO - B M C Biology
JF - B M C Biology
SN - 1741-7007
M1 - 180
ER -
ID: 318202137