Abstract
Recent studies have suggested that conflicts of interests between the sexes may lead to variation in copulation behavior among pairs. We examined differences in the rate and timing of copulation solicitations and copulations among females of different mating status in the facultatively polygynous starling in an attempt to explain why females copulate repeatedly with their mate. All within-pair copulations were female-solicited indicating that females control copulations in the starling. Before egg laying, females solicited copulations at a high rate (usually more than 2 per hour). In contrast to most other species studied so far, females continued to solicit copulations throughout the egg laying period, and also solicited after egg laying (the latest solicitation occurred when the nestlings were 4 days old). Primary females solicited more copulations than monogamous females both during and after the fertile period. Many copulation solicitations of primary females occurred at the nestbox where their male was singing to obtain an extra female. Both primary and secondary females solicited more copulations after the egg-laying period than monogamous females. A large proportion of female copulation solicitations was refused by the male partner: female solicitation resulted in more male refusals in primary females than in monogamous females. Primary females were more likely to be chased aggressively when they solicited a copulation than monogamous females; most aggressive chases occurred when primary females flew towards their male to solicit copulation when he was singing at another nestbox. Overall, our results demonstrate that there is a conflict over copulation between males and females in polygynous pairs. The conflict presumably relates to the cost of sharing male parental investment: females use copulation solicitation behavior to interrupt their singing males apparently in an attempt to prevent them from becoming polygynous. We present the first empirical evidence that female songbirds use copulation solicitation behavior as a form of mate guarding, often in a non-reproductive context. We did not find a positive relationship between copulation rate during the fertile period and the amount of male parental care as is predicted by the paternity confidence hypothesis.
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References
Avery MI (1984) Lekking in birds: choice, competition and reproductive constraints. Ibis 126: 177–187
Barnard P, Markus MB (1989) Male copulation frequency and female competition for fertilizations in a promiscuous brood parasite, the pin-tailed whydah Vidua macroura. Ibis 131: 421–425
Birkhead TR (1991) Sperm depletion in the Bengalese finch, Lonchura striata. Behav Ecol 2: 267–275
Birkhead TR, Fletcher F (1992) Sperm to spare? Sperm allocation by male zebra finches. Anim Behav 43: 1053–1055
Birkhead TR, Møller AP (1992) Sperm competition in birds. Academic Press, London
Birkhead TR, Møller AP (1993) Why do male birds stop copulating while their partners are still fertile? Anim Behav 45: 105–118
Birkhead TR, Atkin L, Møller AP (1987) Copulation behaviour of birds. Behaviour 100: 101–138
Briskie JV (1992) Copulation patterns and sperm competition in the polygynandrous Smith's longspur. Auk 109: 563–575
Burke T, Davies NB, Bruford MW, Hatchwell BJ (1989) Parental care and mating behaviour of polyandrous dunnocks Prunella modularis related to paternity by DNA fingerprinting. Nature 338: 249–251
Cheng KM, Burnes JT, McKinney F (1983) Forced copulation in captive mallards. III. Sperm competition. Auk 100: 302–310
Craig JL, Jamieson IG (1985) The relationship between presumed gamete contribution and parental investment in a communally breeding bird. Behav Ecol Sociobiol 17: 207–211
Daly M (1978) The cost of mating. Am Nat 112: 771–774
Dunn PO, Robertson RJ (1993) Extra-pair paternity in polygynous tree swallows. Anim Behav 45: 231–239
Eens M, Pinxten R (1990) Extra-pair courtship in the starling Sturnus vulgaris. Ibis 132: 618–619
Eens M, Pinxten R, Verheyen RF (1989) Temporal and sequential organisation of song bouts in the starling. Ardea 77: 75–86
Eens M, Pinxten R, Verheyen RF (1991a) Male song as a cue for mate choice in the European starling. Behaviour 116: 210–238
Eens M, Pinxten R; Verheyen RF (1991b) Organization of song in the European starling: species-specificity and individual differences. Belg J Zool 121: 257–278
Eens M, Pinxten R, Verheyen RF (1993) Function of the song and song repertoire in the European starling (Sturnus vulgaris): an aviary experiment. Behaviour 125: 51–66
Feare CJ (1984) The starling. Oxford University Press, Oxford
Freitag F (1936) Aus dem Leben beringter Stare zur Fortpflanzungszeit. Vogelring 8: 8–15
Glick B (1954) Reverse mounting in the starling (Sturnus vulgaris). Auk 71: 204
Hatchwell BJ, Davies NB (1992) An experimental study of mating competition in monogamous and polyandrous dunnocks; Prunella modularis: I. Mate guarding and copulations. Anim Behav 43: 595–609
Hunter FM, Petrie M, Otronen M, Birkhead TR, Møller AP (1993) Why do females copulate repeatedly with one male? Trends Ecol Evol 7: 21–26
Hurly TA, Robertson RJ (1984) Aggressive and territorial behaviour in female red-winged blackbirds. Can J Zool 62: 148–153
Kessel B (1957) A study of the breeding biology of the European starling (Sturnus vulgaris L.) in North America. Am Midl Nat 58: 257–331
Kluyver HN (1933) Bijdrage tot de biologic en de ecologic van den spreeuw (Sturnus vulgaris vulgaris L.) gedurende zijn voortplantingstijd. Versl Meded Plantenziektenk Dienst Wageningen 69: 1–145
Lifjeld JT, Robertson RJ (1992) Female control of extra-pair fertilization in tree swallows. Behav Ecol Sociobiol 31: 89–96
Lifjeld JT, Slagsvold T (1989) Allocation of parental investment by polygynous pied flycatcher males. Ornis Fenn 66: 3–14
Merkel FW (1980) Sozialverhalten von individuell markierten Staren Sturnus vulgaris in einer kleinen Nistkastenkolonie (3. Mitteilung) — Die Rolle der Polygynie. Luscinia 44: 133–158
Møller AP, Birkhead TR (1992) Frequent copulations and mate guarding as alternative paternity guards in birds: a comparative study. Behaviour 118: 170–186
Petrie M (1992) Copulation frequency in birds: why do females copulate more than once with the same male? Anim Behav 44: 790–792
Petrie M, Hunter FM (1994) Intraspecific variation in courtship and copulation frequency: an effect of mismatch in partner attractiveness. Behaviour 127: 265–277
Petrie M, Hall M, Halliday T, Budgey H, Pierpont C (1992) Multiple mating in a lekking bird: why do peahens mate with more than one male and with the same male more than once? Behav Ecol Sociobiol 31: 349–358
Pinxten R, Eens M (1990) Polygyny in the European starling: effect on female reproductive success. Anim Behav 40: 1035–1047
Pinxten R, Eens M (1994) Male feeding of nestlings in the facultatively polygynous European starling: allocation patterns and effect on female reproductive success. Behaviour 129: 113–140
Pinxten R, Eens M, Verheyen RF (1989) Polygyny in the European starling. Behaviour 111: 234–256
Pinxten R, Eens M, Verheyen RF (1993) Male and female nest attendance during incubation in the facultatively polygynous European starling. Ardea 81: 125–133
Schüz E (1942) Biologische Beobachtungen an Staren in Rossitten. Vogelzug 13: 99–132
Schüz E (1943) Brutbiologische Beobachtungen an Staren 1943 in der Vogelwarte Rossitten. J Ornithol 91: 388–405
Sheldon BC (1993) Sexually transmitted disease in birds: occurrence and evolutionary significance. Phil Trans R Soc Lond B 339: 491–497
Sheldon BC (1994) Sperm competition in the chaffinch: the role of the female. Anim Behav 47: 163–173
Slagsvold T, Lifjeld JT (1994) Polygyny in birds: the role of competition between females for male parental care. Am Nat 143: 59–94
Slagsvold T, Amundsen T, Dale S, Lampe H (1992) Female-female aggression explains polyterritoriality in male pied flycatchers. Anim Behav 43: 397–407
Smith HG, Ottoson U, Sandell M (1994) Intrasexual competition among polygynously mated female starlings (Sturnus vulgaris). Behav Ecol 5: 57–63
Sokal RR, Rohlf FJ (1981) Biometry, 2nd edn. Freeman, San Francisco
Summers K (1990) Parental care and the cost of polygyny in the green dart-poison frog. Behav Ecol Sociobiol 27: 307–313
Summers K (1992) Dart-poison frogs and the control of sexual selection. Ethology 91: 89–107
Tortosa FS, Redondo T (1992) Frequent copulations despite low sperm competition in white storks (Ciconia ciconia). Behaviour 121: 288–314
Verheyen RF (1968) De balts en copulate van de spreeuw, Sturnus v. vulgaris L. Giervalk 58: 369–393
Wallraff HG (1953) Beobachtungen zur Brutbiologie des Stares (Sturnus v. vulgaris L.) in Nürnberg. J Orn 94: 36–67
Westneat DF (1993) Temporal patterns of within-pair copulations, male mate-guarding, and extra-pair events in eastern red-winged blackbirds (Agelaius phoeniceus). Behaviour 124: 267–290
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Communicated by F. Trillmich
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Eens, M., Pinxten, R. Inter-sexual conflicts over copulations in the European starling: evidence for the female mate-guarding hypothesis. Behav Ecol Sociobiol 36, 71–81 (1995). https://doi.org/10.1007/BF00170711
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DOI: https://doi.org/10.1007/BF00170711