A new technique for assessing fixation‐induced morphological variation in octopus (Mollusca

Cephalopoda)

Steve O'Shea*

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The morphology of a preserved octopod is significantly affected by the condition of the animal at the time of fixation, whether live or dead. When unknown, this condition can be assessed by examining the degree of contraction of the radula support muscle. Specimens fixed post‐mortem have a relaxed radula support muscle. This muscle is contracted in specimens plunged into preservatives alive. The degree of contraction of this radula support muscle facilitates identification of both fixation‐induced and fixation‐independent character states in octopod systematics.

Original languageEnglish
Pages (from-to)163-166
Number of pages4
JournalNew Zealand Journal of Zoology
Volume24
Issue number2
DOIs
Publication statusPublished - 1997
Externally publishedYes

Keywords

  • Character states
  • Fixation
  • Mollusca
  • Octopoda
  • Radula support muscle
  • Systematics

Fingerprint Dive into the research topics of 'A new technique for assessing fixation‐induced morphological variation in octopus (Mollusca: Cephalopoda)'. Together they form a unique fingerprint.

Cite this