Variation in egg and clutch size of the Black Redstart (Phoenicurus ochruros) at the northeastern edge of the Qinghai-Tibetan Plateau

Song, Sen; Chen, Jiani; Liu, Naifa

doi:10.1186/s40657-016-0055-0

Cited by 8 publications

(12 citation statements)

References 34 publications

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“…"Brood survival strategy" in passerine was documented for numerous bird species. For example, in the Black Redstart Phoenicuros ochruros (Dolenec 2006, Song et al 2016, the Greybacked Shrike Lanius tephronotus (Fan et al 2021), the Blackcap Sylvia atricapilla (Dolenec 2004), the Goldcrest Regulus regulus (Haftorn 1986), the Barn Swallow Hirundo rustica (Dolenec 2002), etc. Contrary thereto, the female Saxaul Sparrow Passer ammodendri (Bao et al 2020) adopts a "brood reduction strategy" for both the first (negative %D-value) and the second clutches (also negative %D-value).…”

Section: Results and Discusionmentioning

confidence: 99%

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Adaptive final (last-laid) eggs in the Eurasian Blue Tit Cyanistes caeruleus

Dolenec

2022

Larus

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The study was carried out in 2021 using nestboxes. I examined the egg-laying pattern of the socially monogamous free-living Eurasian Blue Tit Cyanistes caeruleus that breeds only once a year in the northwestern Croatia. Nestboxes were visited daily to record the laying date of the first and subsequent eggs. A total of 132 eggs from 12 clutches with 11 eggs in each nest (11-egg clutch is the dominant clutch size in the study area) was measured. The mean egg volume was 1.19 cm³ (± 0.12), and the mean egg volume of all final eggs was 1.22 cm³ (± 0.09). In this study, the %D-value was 2.46. According to this value, the Eurasian Blue Tit population in north-western Croatia adopt a "brood survival strategy", where females allocate greater resources in the final eggs.

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Section: Results and Discusionmentioning

confidence: 99%

“…Egg size is correlated to many factors, such as female age (e.g. Verhoeven et al 2020), maternal body mass (Lislevand et al 2005), population density (Perrins & McCleery 1994), laying sequence (Song et al 2016), habitat differences (e.g. Bańbura et al 2010), year-to-year differences (e.g.…”

Section: Introductionmentioning

confidence: 99%

Adaptive final (last-laid) eggs in the Eurasian Blue Tit Cyanistes caeruleus

Dolenec

2022

Larus

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“…We found a positive relationship between egg volume and clutch size among different populations of little bitterns in line with some earlier research conducted on other species (Coulson 1963;Ojanen et al 1979;Hõrak et al 1995). In contrast, many previous studies have provided evidence that egg size and clutch size are inversely correlated (Greig- Smith et al 1988;Blackburn 1991;Song et al 2016), which was explained by a trade-off between these traits (Smith & Fretwell 1974). Another hypothesis was proposed by Martin (2008), who argued that laying larger eggs in cooler climates may reflect a compensation for the increased energetic requirements of embryos.…”

Section: Inter-population Analysismentioning

confidence: 92%

Eggs of little bitterns show high variation and their size increases with latitude

Stępniewski¹,

Hałupka

Czyż

2021

The European Zoological Journal

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Egg size is an important determinant of offspring weight and survival. However, despite extensive research on factors affecting egg dimensions, causes of egg variation are not fully understood. Between 2000 and 2016 we studied a population of little bitterns in western Poland, and examined a total of 529 eggs from 88 clutches. Furthermore, we conducted an extensive literature search for data on clutch and egg size from other populations of the species to test hypotheses explaining the relationships between these variables and latitude. Little bitterns in western Poland laid big eggs but also produced large clutches compared to most other studied populations of the species. The ratio of largest to smallest egg calculated for egg volume was 1.75 for all studied eggs, and up to 1.35 within clutches, suggesting a huge variation between and within clutches in the studied population. Egg dimensions were highly intercorrelated, but egg size was not related to clutch size in the study population. The comparison of data from different populations of the species revealed that egg volume increased significantly with latitude and was positively correlated with clutch size. These results support the embryonic temperature hypothesis and clutch cooling rates hypothesis, but contradict the optimal egg dimensions hypothesis.

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“…Reproduction, the content of greatest concern to ornithologists, is the fundamental process for life history, and reproductive strategy is the decisive factor that affects the fitness of animals, directly through individual survival and reproduction, population dynamics, and persistence [3,10,[12][13][14][15][16]. A large number of studies have described the diversity of reproductive life history strategies among birds due to variations in environmental conditions and individual morphology [16][17][18][19][20][21][22][23][24][25][26][27][28]. Additionally, the body size and the reproductive characteristics in populations of the same species are also influenced by environmental and phylogenetic factors [19,22,29].…”

Section: Introductionmentioning

confidence: 99%

Variations in the Reproductive Strategies of Different Charadrius alexandrinus Populations in Xinjiang, China

Ding

Song

Liu

et al. 2023

Animals

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Due to the influence of bio-geographical and environmental factors, as well as anthropogenic landscape features, organisms show different reproductive strategies among different populations. There is a lack of detailed information on the reproductive biology of Kentish plover Charadrius alexandrinus in arid lands in Central Asia. In this study, we summarized the characteristics of the reproductive biology of three geographically distinct plover populations in Aibi Lake in northwestern Xinjiang, Taitema Lake in southern Xinjiang and artificial reservoirs around Urumqi City in northern Xinjiang, based on 440 eggs from 158 nests observed and analyzed from April to July of 2019 and 2020. We found that there was no significant difference in clutch size among the three populations. However, the egg size of the Taitema Lake population was significantly larger than those of the other two populations, whilst the egg volume and clutch volume of the artificial reservoirs’ populations were significantly larger than that of Aibi Lake. With the postponement of laying dates, the northern and northwestern populations showed the characteristics of a small clutch size and a relatively small egg size, respectively, and a decrease in reproductive output. The heavier female plovers in Taitema Lake laid eggs earlier, and there was a significantly positive correlation between female body mass and clutch size and egg size. The tarsometatarsus length of the female plovers was significantly positively correlated with the reproductive output in all three populations. The model selection results show that female body size and ambient temperature restrict the egg size and reproductive output of Kentish plovers, which is consistent with the upper limit hypothesis of the maternal condition and maternal constraint. Our data support the hypothesis that Kentish plovers show distinct flexibility in their breeding strategies to cope with the harsh natural environment in the arid lands of Xinjiang, China. The results of a relatively high average clutch size and average egg size imply that the saline wetlands of Western China are important breeding habitats for Kentish plovers.

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Variation in egg and clutch size of the Black Redstart (Phoenicurus ochruros) at the northeastern edge of the Qinghai-Tibetan Plateau

Cited by 8 publications

References 34 publications

Adaptive final (last-laid) eggs in the Eurasian Blue Tit Cyanistes caeruleus

Adaptive final (last-laid) eggs in the Eurasian Blue Tit Cyanistes caeruleus

Eggs of little bitterns show high variation and their size increases with latitude

Variations in the Reproductive Strategies of Different Charadrius alexandrinus Populations in Xinjiang, China

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