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Cited by 26Cephalopods and Marine BiologySoft Robotics and ApplicationsElasticity and Material Modeling

Ontogenetic Changes in Fibrous Connective Tissue Organization in the Oval Squid,Sepioteuthis lessoniana Lesson, 1830

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Thompson, Joseph T., Kier, William M.·2001·The Biological Bulletin
DOI 10.2307/1543329
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Abstract

Ontogenetic changes in the organization and volume fraction of collagenous connective tissues were examined in the mantle of Sepioteuthis lessoniana, the oval squid. Outer tunic fiber angle (the angle of a tunic collagen fiber relative to the long axis of the squid) decreased from 33.5 degrees in newly hatched animals to 17.7 degrees in the largest animals studied. The arrangement of intramuscular collagen fiber systems 1 (IM-1) and 2 (IM-2) also changed significantly during ontogeny. Because of the oblique trajectory of the IM-1 collagen fibers, two fiber angles were needed to describe their organization: (1) IM-1(SAG), the angle of an IM-1 collagen fiber relative to the squid's long axis when viewed from a sagittal plane and (2) IM-1(TAN), the angle of an IM-1 collagen fiber relative to the squid's long axis when viewed from a plane tangential to the outer curvature of the mantle. The sagittal component (IM-1(SAG)) of the IM-1 collagen fiber angle was lowest in hatchling squid (32.7 degrees ) and increased exponentially during growth to 43 degrees in squid with a dorsal mantle length (DML) of 15 mm. In squid larger than 15 mm DML, IM-1(SAG) fiber angle did not change. The tangential component (IM-1(TAN)) of IM-1 collagen fiber angle was highest in hatchling squid (39 degrees ) and decreased to 32 degrees in the largest squid examined. IM-2 collagen fiber angle (the angle of an IM-2 collagen fiber relative to the outer surface of the mantle) was lowest in hatchling squid (34.6 degrees ) and increased exponentially to about 50 degrees in 15-mm DML animals. In squid larger than 15 mm DML, IM-2 fiber angle increased slightly with size. The volume fraction of collagen in IM-1 and IM-2 increased 68 and 36 times, respectively, during growth. The ontogenetic changes in the organization of collagen fibers in the outer tunic, IM-1, and IM-2 may lead to ontogenetic differences in the kinematics of mantle movement and in elastic energy storage during jet locomotion.

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Authors
Thompson, J. T., & Kier, W. M.
Affiliations
University of North Carolina at Chapel Hill (US)
ORCID
Venue
The Biological Bulletin
Publisher
University of Chicago Press
Published
2001-10
Volume
201
Issue
2
Pages
136-153
ISSN
  • 0006-3185 (ISSN-L)
  • 1939-8697
DOI
10.2307/1543329
OpenAlex
W2168753861
Cited by
26
References
37
Citations by year
2023: 1 · 2021: 2 · 2020: 1 · 2017: 1 · 2016: 1 · 2014: 1 · 2012: 5
FWCI
2.11
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • Biological Bulletin (publishedVersion)
  • PubMed (publishedVersion)
  • Helmholtz Centre for Ocean Research Kiel (GEOMAR) (acceptedVersion)
  • Biodiversity Heritage Library (Smithsonian Institution) (submittedVersion, cc-by-nc-sa)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Cephalopods and Marine Biology
  • Physical Sciences › Engineering › Biomedical Engineering › Soft Robotics and Applications
  • Physical Sciences › Engineering › Biomedical Engineering › Elasticity and Material Modeling
Keywords
Sepioteuthis lessoniana, ontogeny, collagen fiber organization, fibrous tissue, mantle, fiber orientation angle, collagen volume fraction, elastic energy storage, squid growth
MeSH terms
Animals, Azo Compounds, Connective Tissue, Coloring Agents, Histocytochemistry, Image Processing, Computer-Assisted, Japan, Microscopy, Polarization, Thailand, Statistics, Nonparametric, Fibrillar Collagens, Decapodiformes

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