2008
DOI: 10.1007/s10336-008-0299-5
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Offspring sex ratio in the sequentially polygamous Penduline Tit Remiz pendulinus

Abstract: Despite the growing literature on facultative sex-ratio adjustment in chromosomal sex-determining vertebrate taxa (birds, mammals), the consistency of results is often low between studies and species. Here, we investigate the primary and secondary offspring sex ratio of a small passerine bird, the Eurasian Penduline Tit (Remiz pendulinus) in three consecutive years. This species has a uniquely diverse breeding system, in which the male (and/or the female) abandons the nest during egg-laying, and starts a new b… Show more

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Cited by 10 publications
(6 citation statements)
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“…In line with our prediction, we found no evidence of a bias in the sex ratios of nestlings in the two biparental species (White-crowned Penduline Tit and Cape Penduline Tit). Although we cannot rule out the possibility of skewed sex ratios amongst adults, the low rates of EPP combined with biparental care found in these two species would be consistent with unbiased adult sex ratios (but see van Dijk et al 2008b showing parity of offspring sex ratio also in the polygamous Eurasian Penduline Tit). In most bird species, and especially small passerine birds, it is difficult to estimate adult sex ratios (Donald 2007).…”
Section: Discussionmentioning
confidence: 72%
“…In line with our prediction, we found no evidence of a bias in the sex ratios of nestlings in the two biparental species (White-crowned Penduline Tit and Cape Penduline Tit). Although we cannot rule out the possibility of skewed sex ratios amongst adults, the low rates of EPP combined with biparental care found in these two species would be consistent with unbiased adult sex ratios (but see van Dijk et al 2008b showing parity of offspring sex ratio also in the polygamous Eurasian Penduline Tit). In most bird species, and especially small passerine birds, it is difficult to estimate adult sex ratios (Donald 2007).…”
Section: Discussionmentioning
confidence: 72%
“…Our study thus adds to a growing number of avian studies reporting no bias in brood sex ratios (Dietrich-Bischoff et al 2006, van Dijk et al 2008, Dyrcz & Cichoń 2009, Kingma et al 2011, review in Hasselquist & Kempenaers 2002, and Budden & Beissinger 2004. As such data are probably underrepresented in the published literature (Palmer 2000, Hasselquist & Kempenaers 2002 Table 1.…”
Section: Discussionmentioning
confidence: 84%
“…Year, parental care strategy (male care, female care, and biparental desertion), sex of the offspring, and level of EPP (‘paternity’) were included in these models as fixed effects, and brood ID was included as a random effect. The sex of the offspring was, however, only known for the years 2002–2004 (van Dijk et al 2008). To improve sample sizes, we therefore also present the same LMM, excluding the sex of the offspring.…”
Section: Methodsmentioning
confidence: 99%