Unusual incubation behavior and embryonic tolerance of hypothermia in the Sichuan Partridge (Arborophila rufipectus)

Fu, Yiqiang; Dai, Bo; Wen, Li; Chen, Benping; Dowell, Simon D.; Zhang, Zhengwang

doi:10.1007/s10336-016-1422-7

Cited by 20 publications

(15 citation statements)

References 35 publications

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“…Nest attentiveness estimates were lower (84%) relative to other ground‐nesting galliforms, including Greater Sage‐Grouse (96%; Centrocercus urophasianus ), Greater Prairie‐Chicken (95% Tympanuchus cupido ), and White‐tailed Ptarmigan (95%; Lagopus leucura ; Wiebe & Martin, , Deeming, , Coates & Delehanty, , Winder et al, ). However, our estimates of nest attentiveness were similar to other related species such as the Sichuan Partridge (82%, Arborophila rufipectus ) and Blood Pheasant (72%, Ithaginis cruentus ; Fu et al, ; Jia et al, ).…”

Section: Discussionsupporting

confidence: 84%

“…Incubation recesses are directional movements made away from nesting locations during active incubation, which are thought to allow individual's time to acquire necessary resources (Deeming, ) while maintaining appropriate egg temperatures (Deeming, ; Fu et al, ; Jia, Sun, & Swenson, ; Naylor, Szuba, & Bendell, ; Webb, ). However, movements associated with recesses may increase predation risk to both the female and nest (Martin, ), and therefore, the distribution of resources within an accessible landscape during incubation should drive frequency and distance of individual recess movements (Conley et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Incubation recess behaviors influence nest survival of Wild Turkeys

Bakner

Schofield

Cedotal

et al. 2019

Ecology and Evolution

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In ground nesting upland birds, reproductive activities contribute to elevated predation risk, so females presumably use multiple strategies to ensure nest success. Identification of drivers reducing predation risk has primarily focused on evaluating vegetative conditions at nest sites, but behavioral decisions manifested through movements during incubation may be additional drivers of nest survival. However, our understanding of how movements during incubation impact nest survival is limited for most ground nesting birds. Using GPS data collected from female Eastern Wild Turkeys (n = 206), we evaluated nest survival as it relates to movement behaviors during incubation, including recess frequency, distance traveled during recesses, and habitat selection during recess movements. We identified 9,361 movements off nests and 6,529 recess events based on approximately 62,065 hr of incubation data, and estimated mean nest attentiveness of 84.0%. The numbers of recesses taken daily were variable across females (range: 1‒7). Nest survival modeling indicated that increased cumulative distance moved during recesses each day was the primary driver of positive daily nest survival. Our results suggest behavioral decisions are influencing trade‐offs between nest survival and adult female survival during incubation to reduce predation risk, specifically through adjustments to distances traveled during recesses.

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Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Incubation recess behaviors influence nest survival of Wild Turkeys

Bakner

Schofield

Cedotal

et al. 2019

Ecology and Evolution

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“…During periods of rainfall the nest is likely to lose heat via increased conductance through damp nesting materials (Reid et al, 2002;Hilton et al, 2004;Heenan, 2013), so our result may indicate that larger clutches buffer the effects of rainfall because a smaller clutch surface area to volume ratio reduces exposure to damp nesting materials or humid and cold air. However, it is also important to consider the potential impact of weather on the behavior of incubating birds; for example, any effects of increased conductance may be confounded by females adjusting their nest attentiveness during periods of heavy rainfall and storms (MacDonald et al, 2013;Fu et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Incubation in a Temperate Passerine: Do Environmental Conditions Affect Incubation Period Duration and Hatching Success?

2020

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The timing of breeding often has a profound influence on the reproductive success of birds living in seasonal environments with rapidly changing nestling food availability. Timing is typically investigated with reference to lay dates, but it is the time of hatching that determines the ambient conditions and food availability that nestlings experience. Thus, in addition to lay date, phenological studies may also have to take account of variation in the length of the incubation period, which is likely to depend on both environmental conditions and parental traits. The primary aim of this study was to use a 24-year dataset to investigate the abiotic and biotic factors influencing variation in incubation duration in long-tailed tits (Aegithalos caudatus), a species in which incubation duration varies substantially (range: 12-26 days). We found support for our predictions that drier conditions, later breeding attempts and larger clutches were associated with shorter incubation periods. Larger clutches were also more resilient to increases in incubation duration associated with wet conditions. Surprisingly, warmer ambient conditions were associated with longer incubation periods. Secondly, we assessed the consequences of variation in the length of incubation periods for the risk of nest predation and the hatching success of surviving clutches. We show that longer incubation periods are likely to be costly due to increased exposure to nest predators. In contrast, we found only marginal effects of environmental conditions or incubation duration on hatching success, implying that wet conditions cause slower embryo growth and hence longer incubation periods, rather than causing embryo fatality. We suggest that long-tailed tits' nests and parental behavior protect eggs from mortality arising directly from adverse weather conditions.

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“…The altitude of Laojunshan National Nature Reserve ranges from 1100 to 2008 m and has an annual average temperature of 12.5 °C [4]. Previous studies reported that Sichuan partridge eggs experienced an average of 4.2 h per day below 26 °C (the ‘Physiological Zero Temperature’) at which the embryo cannot develop [47]. Although the temperature is fairly more than that reported for most birds and likely to cause death of the embryo, the hatching success of Sichuan partridge was 88.4%, which is approaching the average hatchability rate for birds generally (89.1%) [47].…”

Section: Discussionmentioning

confidence: 99%

The Draft Genome of the Endangered Sichuan Partridge (Arborophila rufipectus) with Evolutionary Implications

Zhou

et al. 2019

Genes

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The Sichuan partridge (Arborophila rufipectus, Phasianidae, Galliformes) is distributed in south-west China, and classified as endangered grade. To examine the evolution and genomic features of Sichuan partridge, we de novo assembled the Sichuan partridge reference genome. The final draft assembly consisted of approximately 1.09 Gb, and had a scaffold N50 of 4.57 Mb. About 1.94 million heterozygous single-nucleotide polymorphisms (SNPs) were detected, 17,519 protein-coding genes were predicted, and 9.29% of the genome was identified as repetitive elements. A total of 56 olfactory receptor (OR) genes were found in Sichuan partridge, and conserved motifs were detected. Comparisons between the Sichuan partridge genome and chicken genome revealed a conserved genome structure, and phylogenetic analysis demonstrated that Arborophila possessed a basal phylogenetic position within Phasianidae. Gene Ontology (GO) enrichment analysis of positively selected genes (PSGs) in Sichuan partridge showed over-represented GO functions related to environmental adaptation, such as energy metabolism and behavior. Pairwise sequentially Markovian coalescent analysis revealed the recent demographic trajectory for the Sichuan partridge. Our data and findings provide valuable genomic resources not only for studying the evolutionary adaptation, but also for facilitating the long-term conservation and genetic diversity for this endangered species.

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Unusual incubation behavior and embryonic tolerance of hypothermia in the Sichuan Partridge (Arborophila rufipectus)

Cited by 20 publications

References 35 publications

Incubation recess behaviors influence nest survival of Wild Turkeys

Incubation recess behaviors influence nest survival of Wild Turkeys

Incubation in a Temperate Passerine: Do Environmental Conditions Affect Incubation Period Duration and Hatching Success?

The Draft Genome of the Endangered Sichuan Partridge (Arborophila rufipectus) with Evolutionary Implications

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