Body Condition of the Upland Sandpiper (Bartramia Longicauda) en Route Through Central Mexico

Pérez-Arteaga, Alejandro; Chávez, Carlos Cristian Martí­nez; Salgado-Ortiz, Javier

doi:10.58843/ornneo.v30i0.419

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…Diferentes factores pueden influenciar la condición corporal de un ave, incluidos su edad, sexo y estado fenológico y de salud. Una mejor condición corporal, relacionada a un mejor estado nutricional y de salud, favorece a un mejor desempeño en la muda, alimentación, reproducción y, en definitiva, también a una mayor supervivencia (Carey 1996, Gunderson et al 2009, Machado-Filho et al 2010, Milenkaya et al 2013, Milenkaya et al 2015, van Dijk et al 2016, Pérez-Arteaga et al 2019.…”

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Body Condition of Breeding Vermilion Flycatchers (Pyrocephalus Rubinus) Varies Between Areas With and Without Cattle Ranching in Central Argentina

et al. 2021

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The body condition of birds may be conditioned by intrinsic (e.g., sex, age, migratory and breeding status) and extrinsic factors, such as anthropic activities (e.g., livestock raising). We describe the biometry and body condition of Vermilion Flycatchers (VEFL) according to sex and age and evaluate which factors best predict their body condition during the breeding season in the Espinal of central Argentina. The study area included “Parque Luro” Provincial Reserve and two nearby private ranches with livestock. We captured and banded VEFL using mist nets between October to February, from 2015 to 2019. We calculated the scaled mass indexes, which relates body mass to biometric measures (culmen, tarsus, and tail length, and wing chord) to choose the best indicator of body condition. As explanatory variables, we used the breeding condition of females in one model, breeding condition of males in another model, and in a final model we used date, year and site, and included all individuals. We banded 93 VEFL that did not vary according to age-dependent body size or reproductive condition. Nevertheless, females weighed more, had higher fat levels and shorter wings than males. The body condition was only explained by breeding site, being smaller in one ranch than the other ranch and the reserve. We highlight the importance of reserves and the need for further research to understand the ecological constraints that South American birds face, to promote their conservation.

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Body Condition of Breeding Vermilion Flycatchers (Pyrocephalus Rubinus) Varies Between Areas With and Without Cattle Ranching in Central Argentina

et al. 2021

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Melanin‐based ornament darkness positively correlates with across‐season nutritional condition

Hegyi

Laczi

Kötél

et al. 2020

Ecology and Evolution

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Condition-dependence is a fundamental concept in sexual selection research. Costs of mate choice (in terms of time, energy, and opportunity) necessitate benefits that outweigh these costs. A major group of benefits arises from condition-dependence, which means the adjustment of signals to the physiological state of the individual, as a consequence of the costs of expressing elaborate signal values (Penn & Számadó, 2020). Condition-dependence may link signal expression to the additive genetic background of condition (Rowe & Houle, 1996), thereby building a connection between mate choice and adaptation to the prevailing environment (Lorch et al., 2003), at the same time also lessening the chance that directional selection by mate choice depletes the additive genetic variance of the signal (Tomkins et al., 2004). Recent research of condition-dependent signals has brought new suggestions for general mechanisms connecting organismal performance and signal expression (Emlen et al., 2012; Koch et al., 2017; Lailvaux & Irschick, 2006). Another promising direction might be the use of overarching, multidimensional approaches to condition (Milot et al., 2014). At the same time, a tendency is seen for the preservation (Labocha & Hayes, 2012), reinstatement (Schulte-Hostedde et al., 2005), and reinterpretation (Salin et al., 2015) of classical condition measures. All of these developments make sense only if we (a) clarify the timing and mechanism of signal production and (b) also take into account the possibility that signal expression may feed back to condition, for example, through resource acquisition (Klug et al., 2010) or aggression by conspecifics (Webster et al., 2018).

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Migration Patterns of Upland Sandpipers in the Western Hemisphere

Hill¹,

Sandercock

Renfrew³

2019

Front. Ecol. Evol.

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Our research protocols followed recommended procedures in the Guidelines to the Use of Wild Birds in Research of the Ornithological Council. We conducted our project under government permits for scientific research, including federal and state permits for live capture and tagging of wild birds, and access permits for working at facilities of the US Department of Defense and Konza Prairie Biological Station.

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Body Condition of the Upland Sandpiper (Bartramia Longicauda) en Route Through Central Mexico

Cited by 4 publications

References 26 publications

Body Condition of Breeding Vermilion Flycatchers (Pyrocephalus Rubinus) Varies Between Areas With and Without Cattle Ranching in Central Argentina

Body Condition of Breeding Vermilion Flycatchers (Pyrocephalus Rubinus) Varies Between Areas With and Without Cattle Ranching in Central Argentina

Melanin‐based ornament darkness positively correlates with across‐season nutritional condition

Migration Patterns of Upland Sandpipers in the Western Hemisphere

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