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Inheritance of Behavioral Characters in F2 Mallard x Pintail (Anas platyrhynchos L. x Anas acutas L.) Hybrids
Paul Johnsgard Collection
  • Roger S. Sharpe, University of Nebraska-Lincoln
  • Paul A. Johnsgard, University of Nebraska-Lincoln
Date of this Version
1-1-1966
Disciplines
Comments

Published in BEHAVIOUR, Vol. 27, No. 3/4 (1966), pp. 259-272.
Copyright 1966 Brill Academic Publishers. Used by permission.

Abstract

The present study was undertaken to compare the inheritance of behavioral and morphological features of two closely related species of Anas, and to attempt to establish whether any significant degree of behavioral variation occurs in the second generation which could be attributed to these genetic processes.

Two closely related species of Anas, the Common Mallard (A. p. platyrhynchos) and the Common Pintail (A. a. acuta), were selected for study. Both species have been repeatedly hybridized in captivity (GRAY, 1958; PHILLIPS, 1915, 1921), and occasionally hybrids occur in the wild. MAYR (1963) has commented on the fact that these sympatric Holarctic species have complete interspecific hybrid fertility, have a combined world population possibly exceeding 1000,000,000 and yet the rate of natural hybridization is probably less than one in several thousand. Thus, isolating mechanisms other than hybrid sterility, which presumably consist primarily of plumage and behavioral differences, are effective in maintaining the two species as distinct entities.

Citation Information
Roger S. Sharpe and Paul A. Johnsgard. "Inheritance of Behavioral Characters in F2 Mallard x Pintail (Anas platyrhynchos L. x Anas acutas L.) Hybrids" (1966)
Available at: http://works.bepress.com/paul_johnsgard/247/