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Documents disponibles écrits par cet auteur (17)
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Article
Agata Banach, Auteur ; Adam Flis, Auteur ; Bartłomiej Kusal, Auteur ; Halszka Łożyńska, Auteur ; Mateusz Ledwon, AuteurAn equal sex ratio at the population level is the usual, evolutionarily stable condition. However, at the individual level, it may be adaptive for parents to manipulate the sex of their offspring, especially in species with sexual size dimorphis[...]
Article
Mateusz Ledwon, Auteur ; Grzegorz Neubauer, Auteur ; Adam Flis, Auteur ; Agata Banach, AuteurOffspring desertion by a single parent, mainly the female, occurs in many charadriiform birds. According to the differential parental capacity hypothesis (DPCH), females are more likely to desert, since they may be in poorer body condition than [...]
Article
Mateusz Ledwon, Auteur ; Patricia Szczys, AuteurPatterns of extra pair paternity (EPP) and intraspecific brood parasitism (IBP) were studied in a Whiskered Tern Chlidonias hybrida population characterized by female brood desertion, a high level of extra pair courtship feedings (10%) and a low[...]
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Agata Banach, Auteur ; Grzegorz Neubauer, Auteur ; Adam Flis, Auteur ; Mateusz Ledwon, AuteurThe growth of a nestling during the first few weeks after hatching is crucial for its further life and is sensitive to the conditions experienced during this period. Among species exhibiting Sexual Size Dimorphism (SSD), one of the most importan[...]
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Mateusz Ledwon, Auteur ; Grzegorz Neubauer, Auteur ; Agata Żmuda, Auteur ; Adam Flis, AuteurIn species where the offspring are naturally deserted by one parent, the experimental stressing of breeding individuals can provide valuable information on the mechanisms underlying desertions and thus the evolution of parental roles. During a s[...]
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Mateusz Ledwon, Auteur ; Grzegorz Neubauer, AuteurMales of many bird species feed their mates during the pre-incubation period. The food provisioned by males during these courtship feedings (CFs) represents the key source of energy for the female during egg formation. Non-pair males may trade f[...]
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Mateusz Ledwon, Auteur ; Grzegorz Neubauer, AuteurDans Ibis (159(4) 2017)In species with biparental care, a conflict of interest can arise if one mate tries to maximize its own reproductive success at the expense of the other's. One of the mates can desert the brood to accrue a number of benefits to enhance its own f[...]
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Jacob Dayton, Auteur ; Mateusz Ledwon, Auteur ; Jean-Marc PAILLISSON, Auteur ; Nataly Atamas, Auteur ; Patricia Szczys, AuteurAbstract. Contrasting the general trend of declining Afro-Palearctic migratory bird populations, the Whiskered Tern (Chlidonias hybrida hybrida) has recently exhibited spectacular demographic expansion and range shifts across its patchy European[...]
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Robert Gwiazda, Auteur ; Mateusz Ledwon, AuteurWe studied sex-specific differences in prey returned to nests and eaten by parents in Whiskered Terns Chlidonias hybrida. The species is size-dimorphic, with females being smaller than males. The sex of the birds was determined by molecular anal[...]
Article
Artur Goławski, Auteur ; Zbigniew Kasprzykowski, Auteur ; Mateusz Ledwon, Auteur ; Emilia Mróz, Auteur ; Federico Morelli, AuteurCapsule Evidence from two tern species does not support the theory that species in expansion should bias their brood sex ratios towards the more dispersing sex.Aims Sex ratio theory predicts that when a species is in expansion, the sex ratio sho[...]
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Mateusz Ledwon, Auteur ; Jacek Betleja, Auteur ; Grzegorz Neubauer, AuteurCapsule In the Whiskered Tern Chlidonias hybrida, hatching success was similar at nests where both parents were caught during the same trapping session and nests where parents were caught on different days. Trapping both mates during the same se[...]
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Mateusz Ledwon, Auteur ; Jacek Betleja, Auteur ; Grzegorz Neubauer, AuteurA method for trapping both parents of Whiskered Terns (Chlidonias hybrida), a semi-precocial species, using enclosures that allow access to the chicks until they fledge is described. The approach combines the gradual installation of enclosures w[...]
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Mateusz Ledwon, Auteur ; Jacek Betleja, AuteurThe migratory strategy of herons is poorly understood: only that of Purple Heron has been well studied. The migratory movements of three Night Herons from the Upper Vistula Valley (Poland) were studied using a GPS/GSM-tracking system in 2012. Th[...]
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Mateusz Ledwon, Auteur ; Grzegorz Neubauer, Auteur ; Jacek Betleja, AuteurWe present the first-ever survival estimates of the Whiskered Tern Chlidonias hybrida, based on the analysis of capture-recapture data (403 adults and 1,484 chicks ringed) collected between 1993 and 2011 in an increasing breeding population in s[...]
Article
Robert Gwiazda, Auteur ; Mateusz Ledwon, AuteurSexual size dimorphism is common in many bird species. It can lead to sex-specific differences in foraging ability. The Whiskered Tern (Chlidonias hybrida) exhibits sexual size dimorphism. Sex-specific differences in the foraging behaviour of Wh[...]
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Mateusz Ledwon, AuteurLedwoh M. 2011. Sexual size dimorphism, assortative mating and sex identification in the Whiskered Tern Chlidonias hybrida. Ardea 99:191-198. I examined sexual size dimorphism (SSD) and assortative mating and estimated a discriminant function fo[...]
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Mateusz Ledwon, Auteur ; Jacek Betleja, Auteur ; Tadeusz Stawarczyk, Auteur ; Grzegorz Neubauer, AuteurThe Whiskered Tern population in Poland has rapidly increased from 40 breeding pairs in 1990 to over 1,600 in 2007, with strongest local population in the Upper Vistula River Valley. Owing to rather low pre-breeding and adult apparent survival r[...]
