Endocrinology of oviposition in the tuatara (Sphenodon punctatus)-II. Plasma arginine vasotocin concentrations during natural nesting

Louis J. Guillette, Catherine R Propper, Auson Cree, Robert M. Doresl

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

1. 1. Plasma concentrations of the neurohypophysial arginine vasotocin (AVT) were measured during three stages of natural nesting [nest digging (N = 16), oviposition (N = 6), nest guarding (N = 6)] in the rare New Zealand reptile, the tuatara (Sphenodon punctatus). 2. 2. Nest digging females (X ± 1 SE: 134.9 ± 15.0 pg/ml) exhibited elevated but significantly lower concentrations of plasma AVT compared to those observed during oviposition (216.0 ± 28.1 pg/ml). Nest guarding females (54.6 ± 29.8 pg/μl) had plasma AVT concentrations significantly lower than other stages. 3. 3. These data are similar to those reporting elevated plasma AVT concentrations during oviposition in sea turtles but tuatara exhibit significantly lower plasma AVT values (10-fold difference). Plasma AVT concentrations reported for tuatara and birds are comparable.

Original languageEnglish (US)
Pages (from-to)819-822
Number of pages4
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume100
Issue number4
DOIs
StatePublished - 1991
Externally publishedYes

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Endocrinology
Vasotocin
Oviposition
Plasmas
Turtles
Reptiles
Birds
New Zealand

ASJC Scopus subject areas

  • Physiology
  • Molecular Biology
  • Biochemistry

Cite this

Endocrinology of oviposition in the tuatara (Sphenodon punctatus)-II. Plasma arginine vasotocin concentrations during natural nesting. / Guillette, Louis J.; Propper, Catherine R; Cree, Auson; Doresl, Robert M.

In: Comparative Biochemistry and Physiology -- Part A: Physiology, Vol. 100, No. 4, 1991, p. 819-822.

Research output: Contribution to journalArticle

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