Complemental males

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(Zool.) peculiar small males living parasitically on the ordinary hermaphrodite individuals of certain barnacles.

See also: Complemental

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
testudinaria consist of hermaphrodites, which attach directly to their host, and dwarf males (complemental males sensu Darwin, 1854), which attach to hermaphrodites (Grisp, 1983; Zardus and Hadfield, 2004; Cheang et al., 2013; Zardus et al., 2014).
Complemental males in the barnacle Bathylasma alearum (Cirripedia: Pachylasmatidae).
Darwin and his successors (e.g., Annandale, 1905; Broch, 1922; Batham, 1945) believed that the primary function of thoracican dwarf males was to complement the reproduction of hermaphrodites at low densities, and they often called such males "complemental males." More recent theoretical studies (Charnov, 1982, 1987; Crisp, 1983; Yamaguchi et al., 2007, 2008; Urano et al., 2009) have stressed the role of reduced sperm competition in the evolution of dwarf males in barnacles.