Mating system flexibility in the Great Bustard: a comparative study

Carranza, Juan; Trucios, S. J. Hidalgo de; Ena, Vicente

doi:10.1080/00063658909477024

Cited by 15 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These seasonal patterns are similar to those observed in other Great Bustard populations (Gewalt 1959, Lukschanderl 1971, Glutz et al 1973, Hutterer and Liutkens 1974, Cramp and Simmons 1980, Sterbetz 1981, Alonso and Alonso 1990, Carranza et al 1989. Females usually nested in close proximity to the leks where they mated and thus spent most of the year within the same area.…”

Section: Discussionsupporting

confidence: 85%

“…The mating system apparently varies in the Great Bustard from a promiscuous, non-territorial lek to a probably less frequent harem system (Gewalt 1959, Glutz et al 1973, Cramp and Simmons 1980, Sterbetz 1981, Carranza et al 1989. Although some authors believe that harem-defending males show some degree of territoriality (see Cramp and Simmons 1980, Sterbetz 1981, Carranza et al 1989), this small-area defence, if it really exists, probably constitutes an additional strategy of the mate-defence mating system.…”

Section: Discussionmentioning

confidence: 99%

“…Great Bustards Otis tarda show mostly polygynous lek-type, and to a lesser extent harem-type, mating systems and probably the strongest sexual size dimorphism among birds (Gewalt 1959, Cramp and Simmons 1980, Sterbetz 1981, Carranza et al 1989. Great Bustards are sedentary in the western and southern, and migratory in the northern and eastern parts of their range (Gewalt 1959, Cramp andSimmons 1980); some long-distance movements have been reported in the primarily sedentary Iberian population (Cramp andSimmons 1980, Hidalgo andCarranza 1990).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Male-Biased Dispersal in the Great Bustard Otis tarda

Alonso¹,

Alonso²

1992

Ornis Scandinavica

View full text Add to dashboard Cite

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. . Wiley and Nordic Society Oikos are collaborating with JSTOR to digitize, preserve and extend access to Ornis Scandinavica. . 1992. Male-biased dispersal in the Great Bustard Otis tarda. -Ornis Scand. 23: 81-88.We studied dispersal and seasonal movements of Great Bustards marked as young in Villafifila, NW Spain, between 1983 and1990. This study documented male-biased dispersal in a sexually dimorphic, lekking species; one of the very few documented examples outside the Anatidae. Females nested outside the display area after visiting leks for mating. Males abandoned breeding activities after mating and dispersed during summer to moult. Young stayed with hens until a new breeding cycle was initiated in the next spring. Males dispersed significantly earlier and further from natal sites than females. Home ranges of males were significantly larger during their first two years of life than later, and those of females were significantly smaller than those of males. Average age of first lek attendance was 2.7 yr for males and 1.9 yr for females. Females attended leks closer to natal sites than males, and adult males attended the same leks year after year. Age of first successful breeding was 4-5 yr in females. These results support the hypothesis that sex-biased dispersal is determined by the different value of philopatry for the two sexes.

show abstract

Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Male-Biased Dispersal in the Great Bustard Otis tarda

Alonso¹,

Alonso²

1992

Ornis Scandinavica

View full text Add to dashboard Cite

show abstract

“…The latter factor might be particularly important, since in most gregarious or semi-gregarious species, including lekking ones, breeding individuals normally join the largest and closest existing aggregations, instead of settling in unoccupied areas, despite their habitat suitability, as predicted by the conspecific attraction theory (Reed & Dobson, 1993;Danchin & Wagner, 1997;Widemo, 1998). The closely related and also lekking great bustard (Carranza, Hidalgo de Trucios & Ena, 1989;Morales & Martín, 2002), has been found to leave unoccupied large areas of perfectly suitable habitat (Lane et al, 2001).…”

Section: Is Male Abundance Determined By Landscape Features?mentioning

confidence: 99%

Can landscape composition changes predict spatial and annual variation of little bustard male abundance?

Morales

García

Arroyo

2005

Animal Conservation

View full text Add to dashboard Cite

We studied variables affecting spatial and inter-annual variations in presence/absence and abundance of little bustard (Tetrax tetrax) males in extensive cereal farmland in central Spain. Both variables were positively influenced by the percentage of arable surface and also by substrate heterogeneity. In addition, male abundance varied significantly between years and among sectors of the study area, even when taking into account variation in landscape variables. A significant interaction between year and sector showed that abundance variations did not follow a fixed pattern, meaning that interannual variation in male abundance among sectors cannot be predicted. We discuss potential alternatives to explain such variation, as well as the implications of our results for the species' population estimates, status assessment and conservation.

show abstract

“…Sightings were plotted during the period when copulation rate is highest, which in our study area is between 25 March and 15 April (Carranza et al 1989, Morales et al 1996. For this analysis, data were pooled over the duration of the study, which yielded 17 to 45 locations for each male.…”

Section: Short Communicationsmentioning

confidence: 99%