Assortative mating, sexual size dimorphism and sex determination in a seabird with plumage polymorphism

Leal, Gustavo R.; Nunes, Guilherme Tavares; Oliveira, Gabriela de; Bugoni, Leandro

doi:10.1080/17451000.2019.1596285

Cited by 6 publications

(3 citation statements)

References 52 publications

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“…For example, if both members of pairs have a poor body condition, then reproductive investment will be limited (either because they have more opportunities to reproduce in the future as long-lived animals or because their body condition limits the amount of reproductive investment they can make). Whereas recent studies examining assortative mating were correlational and did not link this mating pattern to fitness [12,13,70,71], the present research provides insight into the (short-term) reproductive consequences of assortative mating in terms of breeding success (figure 4), advancing our understanding of the repercussions of mate choice in seabirds.…”

Section: (B) Breeding Performance and Offspring Fitnessmentioning

confidence: 59%

Mate selection based on labile traits affects short-term fitness in a long-lived seabird

et al. 2020

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In long-lived monogamous social species, partner compatibility can play a crucial role in reproductive success. We evaluated assortative mating based on body condition (plasma triglyceride concentration), diet (δ 15 N), and foraging habitat (δ 13 C) in the blue-footed booby Sula nebouxii, a long-lived monogamous seabird. We investigated the effects of assortative mating (sum of triglycerides in a pair) and asymmetry within pairs (residuals from regression of female-male triglycerides) on reproductive performance and offspring growth (alkaline phosphatase, ALP). We found that strong assortative mating determined by body condition and diet seemed to be related to a signalling mechanism (nutritional state). This mating pattern had a substantial effect on the breeding parameters and influenced offspring ALP. Within-pair asymmetry did not influence any reproductive parameters, but the ALP of offspring was related to the within-pair relative female condition. Overall, our results indicate that individuals seek the best possible match to maximize their breeding investment and/or individuals are limited in their mate options by their current body condition, which has consequences for offspring fitness in the short term. Our findings show that assortative mating based on body condition produces notable variation in the joint condition of the pair, which determines their breeding success.

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Section: (B) Breeding Performance and Offspring Fitnessmentioning

confidence: 59%

Mate selection based on labile traits affects short-term fitness in a long-lived seabird

et al. 2020

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“…In total, the blood and primary feathers of 24 petrels were sampled in two consecutive years, and the other three petrels were sampled in three consecutive years. Among these individuals, 14 were females, and 13 were males according to molecular sexing conducted for other studies (e.g., Leal et al 2019). Because we did not find differences in foraging areas and SI values among groups, the sexes were pooled for further analysis.…”

Section: Resultsmentioning

confidence: 99%

Individual variability in habitat, migration routes and niche used by Trindade petrels, Pterodroma arminjoniana

Leal

Bugoni

2021

Mar Biol

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Individual variability within a population and the eventual repeatability across time and space may provide stability in a population facing environmental changes, by affecting individuals differently. Thus, the variability and repeatability of behaviours, habitats used, niches and migratory pathways could play an important role. Trindade petrels (Pterodroma arminjoniana) are threatened seabirds that breed year round on Trindade Island in the South Atlantic Ocean, migrate to North Atlantic Ocean in the non-breeding periods, and use wide oceanic areas. This study investigated the timing, at-sea distribution, and trophic niche throughout the annual cycle of the austral fall/winter breeding group of Trindade petrel and examined consistency in distribution and trophic niche used by the Trindade petrel at the individual level, in different breeding seasons, using geolocator tracking and stable isotope analysis. Results demonstrated that petrels breed annually, maintaining their breeding schedules. Petrels share a common, vast oligotrophic oceanic area during both breeding and non-breeding periods inside the South Atlantic and North Atlantic Subtropical Gyres, respectively. Two migratory patterns were identified and used repeatedly by individuals. Although petrels overlapped at-sea distributions in consecutive breeding seasons, consistency in parameters tested was not found. Breeding in two schedules along the year, in addition to the use of different migratory pathways and flexibility in their isotopic niche can be an advantage for Trindade petrel population to cope with environmental changes. Causes and consequences of variable niche and pathways used, and the existence of consistency and variability among birds breeding later on the year remain poorly-known.

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“…However, the bird's buoyant flight style and wings bent at the carpal joint recalled a Pterodroma rather than a shearwater. Photographs revealed a fairly heavy and short bill, unlike the relatively long-and (Luigi et al 2009, Leal et al 2019 and Kerguelen Petrel Lugensa brevirostris (Schramm 1983, Maurício et al 2014 with their respective samples sizes (n). * = indicates mean values from live individuals.…”

Section: Separation Of Great-winged Petrel From Dark-morph Trindade Petrelmentioning

confidence: 98%

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2021

Bulletin of the British Ornithologists’ Club

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Bill Bourne died peacefully at Keith, in Scotland, on 31 May 2021, aged 91. Bill wrote so much: papers in this Bulletin are noted below, and are illustrative of the breadth and depth of his ornithological interests and knowledge. Much has been written about him over his working life as a medic, in travel, in research and writing. Bill featured as the 12th in the series 'Personalities' in the April 1978 issue of British Birds. The authors' perception of Bill, a legend of energy, knowledge and eccentricity were shown to stand the test of time. He joined the BOC in 1956. When I first met him in 1969 at the Autumn Scientific meeting of the British Ornithologists' Union he encouraged me to do so too, and he proved to be a great friend as I forged my early contacts in the world of exploration, museums, research and societies.Bill's energy and resourcefulness are well illustrated in his 1951 solo expedition to the Cape Verdes, as a result of which he contributed to the Bannermans' History of the birds of the Cape Verde Islands. His early enthusiasm for birds and their nests was imparted by three maiden aunts. At age seven his father introduced him to egg collecting, which he pursued for ten years, then saw the error, destroyed his collection, and joined the British Trust for Ornithology. He spent most of the war in Bermuda enjoying tropicbirds and terns, and learning about boats and seabirds. From this time his particular interest was the Tubinares. David Bannerman recounts how at the hottest time of year, with little money and no transport of any kind, Bill relied entirely on his wits in his solo Cape Verde endeavour. It says much for his stamina and enthusiasm that he walked across all of São Tiago, over the roughest country, while his journeys between the islands were perforce made in local schooners. With an interest more in ecology than in specimen collecting just one was taken, an example of a Purple Heron Ardea purpurea, from a colony he discovered on São Tiago. He was struck by the paleness of their plumage and the specimen he secured was sent to Paris. After some years, a new race was named by the Abbé René de Naurois in Bill's honour, A. p. bournei.Bill read medicine and zoology at Cambridge, and completed his training at St Bartholomew's Hospital, London. Service in the RAF took him to Malta, Jordan and the Middle East at the time of the Suez crisis, then Cyprus, where he was co-founder and first recorder of the Cyprus Ornithological Society. His passionate interest in islands and seabirds came to the fore when, in 1961, he proposed to found the Seabird Group, which eventually formed in 1965, a timely formation ahead of the Torrey Canyon disaster in March 1967. He became its first secretary, whilst in the role of adviser to the Royal Naval Bird Watching Society (RNBWS) he codified the collection of avian data from ships at sea (Sea Swallow 13: 9-16), including ocean weather ships in the eastern Atlantic at a time when reports were pouring in. During this period, when I first met Bill, he worked at Watford Gen...

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Assortative mating, sexual size dimorphism and sex determination in a seabird with plumage polymorphism

Cited by 6 publications

References 52 publications

Mate selection based on labile traits affects short-term fitness in a long-lived seabird

Mate selection based on labile traits affects short-term fitness in a long-lived seabird

Individual variability in habitat, migration routes and niche used by Trindade petrels, Pterodroma arminjoniana

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