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29 results for “Charadrius”
Data from: Mate fidelity in a polygamous shorebird, the snowy plover (Charadrius nivosus)
Social monogamy has evolved multiple times and is particularly common in birds. However, it is not well understood why some species live in long-lasting monogamous partnerships while others change mates between breeding attempts. Here, we investigate mate fidelity in a sequential polygamous shorebird, the snowy plover (Charadrius nivosus), a species in which both males and females may have several breeding attempts within a breeding season with the same or different mates. Using six years of data from a well-monitored population in Bahía de Ceuta, Mexico, we investigated predictors and fitness implications of mate fidelity both within and between years. We show that in order to maximize reproductive success within a season, individuals divorce after successful nesting and re-mate with the same partner after nest failure. Therefore, divorced plovers, counterintuitively, achieve higher reproductive success than individuals that retain their mate. We also show that different mating decisions between sexes predict different breeding dispersal patterns. Taken together, our findings imply that divorce is an adaptive strategy to improve reproductive success in a stochastic environment. Understanding mate fidelity is important for the evolution of monogamy and polygamy, and these mating behaviours have implications for reproductive success and population productivity.
Data from: High fidelity: extra-pair fertilisations in eight Charadrius plover species are not associated with parental relatedness or social mating system
Extra-pair paternity is a common reproductive strategy in many bird species. However, it remains unclear why extra-pair paternity occurs and why it varies among species and populations. Plovers (Charadrius spp.) exhibit considerable variation in reproductive behaviour and ecology, making them excellent models to investigate the evolution of social and genetic mating systems. We investigated inter- and intra-specific patterns of extra-pair parentage and evaluated three major hypotheses explaining extra-pair paternity using a comparative approach based on the microsatellite genotypes of 2,049 individuals from 510 plover families sampled from twelve populations that constituted eight species. Extra-pair paternity rates were very low (0 to 4.1% of chicks per population). No evidence was found in support of the sexual conflict or genetic compatibility hypotheses, and there was no seasonal pattern of extra-pair paternity (EPP). The low prevalence of EPP is consistent with a number of alternative hypotheses, including the parental investment hypothesis, which suggests that high contribution to care by males restricts female plovers from engaging in extra-pair copulations. Further studies are needed to critically test the importance of this hypothesis to plover mate choice.
Data from: Heterozygosity-fitness correlations of conserved microsatellite markers in Kentish plovers Charadrius alexandrinus
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Data from: Mate fidelity in a polygamous shorebird, the snowy plover (Charadrius nivosus)
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Data from: Supportive wind conditions influence offshore movements of Atlantic Coast piping plovers (Charadrius melodus melodus) during fall migration
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Data from: High fidelity: extra-pair fertilisations in eight Charadrius plover species are not associated with parental relatedness or social mating system
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Data from: High gene flow on a continental scale in the polyandrous Kentish Plover Charadrius alexandrinus
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Fig. 8 - A in Status, distribution and conservation of Kentish plover Charadrius alexandrinus (Aves, Charadriiformes) in Sicily
Fig. 8 - A typical gravel beach in Messina province near the mouth of "Torrente Mela", Milazzo. / Una tipica spiaggia di ghiaia nella provincia di Messina vicino alla foce del "Torrente Mela", Milazzo (Photo / Roto: A. Torre).
Fig. 11 in Status, distribution and conservation of Kentish plover Charadrius alexandrinus (Aves, Charadriiformes) in Sicily
Fig. 11 - The beach of "Sampieri", Ragusa: a valuable sandy coast characterized by primary and embryo dunes with vegetation including Calamagrostis arenaria (L.) and Ephedra fragilis Desf. / La spiaggia di "Sampieri", Ragusa: un pregevole litorale sabbioso caratterizzato da dune primarie ed embrionali con una vegetazione che comprende Calamagrostis arenaria (L.) ed Ephedra fragilis Desf. (Photo / Foto: P. Galasso).
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