Unidirectionality in the Phylogeny of Social Organization, With Special Reference To Birds

Abstract

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The socio-sexual behaviour of extant archosaurs: implications for understanding dinosaur behaviour

“…Lack 1968;Emlen and Oring 1977;Kavanau 1987Kavanau , 2007McKitrick 1992;Davies 1993), paternal (e.g. Van Rhign 1984;Elzanowski 1985;Van Rhign 1990;Wesolowski 1994;Ligon 1999;Vehrencamp 2000;Wesolowski 2004) or maternal (e.g. Burley and Johnson 2002;Tullberg et al 2002).…”

Phylogenetic Analysis of the Evolution of Alternative Social Behavior in the Manakins (Aves: Pipridae)

“…Investigations of the evolution of parental care (Gittleman 1981;Rhijn 1984Rhijn , 1990McKitrick 1992;Ligon 1993), interspecific nest parasitism (S. M. Lanyon 1992) and cooperative breeding (Edwards and Naeem 1993;Ligon 1993) support a reevaluation of adaptive individual plasticity as an explanation for the diversity ofthese breeding systems. Among the most interesting classes of alternative social behavior are lek breeding, and coordinated and cooperative lek display, which occur in animals undergoing extreme sexual selection.…”

“…In fully cooperative systems, the subordinate males in a partnership or group contribute to the attraction of females to the group, but the dominate males in these associations receive most or virtually all the copulations (Rhijn 1973;Foster I 977a, 1981Foster I 977a, , 1985McDonald I 989a,b). This form of pre mating cooperation is distinct from other forms of communal or cooperative breeding in which there are long-term social relationships among a reproductive pair and other individuals (e.g., Brown 1987).…”

Phylogenetic Analysis of the Evolution of Alternative Social Behavior in the Manakins (Aves: Pipridae)

“…PRUM evolution of alternative forms of reproductive social behavior have just begun to be explored. Investigations of the evolution of parental care (Gittleman 1981;Rhijn 1984Rhijn , 1990McKitrick 1992;Ligon 1993), interspecific nest parasitism (S. M. Lanyon 1992) and cooperative breeding (Edwards and Naeem 1993;Ligon 1993) support a reevaluation of adaptive individual plasticity as an explanation for the diversity of these breeding systems. Among the most interesting classes of alternative social behavior are lek breeding, and coordinated and cooperative lek display, which occur in animals undergoing extreme sexual selection.…”