Adriana A Maldonado-Chaparro

Universidad del Rosario | UR · Biology

Individuals show consistent between-individual behavioural variation when they interact with conspecifics or heterospecifics. Such patterns might underlie emergent group-specific behavioural patterns and between-group behavioural differences. However, little is known about (i) how social and non-social drivers (external drivers) shape group-level s...

Human-induced disturbances affect animal behaviours such as anti-predatory responses. Animals in urban environments tend to exhibit a reduced escape response, measured as a shorter flight initiation distance (FID), compared to their rural counterparts. While FID has been evaluated in animals dwelling in contrasting habitats (e.g. urban versus rural...

Culturally transmitted communication signals – such as human language or bird song – can change over time through cultural drift, and the resulting dialects may consequently enhance the separation of populations. However, the emergence of song dialects has been considered unlikely when songs are highly individual-specific, as in the zebra finch (Ta...

Despite the ecological importance of pair bonding, the ontogeny of pair bond formation remains poorly understood. We capitalized on long-term high-resolution tracking of social interactions across replicated colonies of captive zebra finches, Taeniopygia guttata, to map the dynamics of social relationships prior to reproduction and to identify the...

The internationally recognized levels of conservation, namely ecosystems, species , and genes, have thus far served as important guidelines to determine how national and international laws should protect nature. However, a far ignored aspect of a species' life history in the legislation is its tendency to form social groups. Group members greatly d...

In response to the COVID-19 crisis, numerous academic conferences and seminars were moved online. Some remote (online) seminars have the aim to be maintained permanently after the pandemic, offering weekly opportunities for scientists, postdocs, and students to learn about research and to improve global networking. Remote seminars are a good option...

Culturally transmitted communication signals, such as human language or bird song, can change over time through a process of cultural drift, and may consequently enhance the separation of populations, potentially leading to reproductive isolation. Local song dialects have been identified in bird species with relatively simple songs where individual...

Reproduction is costly. Despite this, evidence suggests that parents sometimes feed unrelated offspring. Several hypotheses could explain this puzzling phenomenon. Adults could feed unrelated offspring that are 1) of their close social associates to facilitate these juveniles’ integration into their social network (the social inheritance hypothesis...

The social decisions that individuals make—who to interact with and how frequently—give rise to social structure. The resulting social structure then determines how individuals interact with their surroundings—resources and risks, pathogens and predators, competitors and cooperators. However, despite intensive research on (a) how individuals make s...

Adriana A. Maldonado-Chaparro and Damien R. Farine, Demographic processes in animal networks are a question of time Amiyaal Ilany, Complex societies, simple processes Orr Spiegel and Noa Pinter-Wollman, Placing the effects of demography on networks in ecological context Ipek G. Kulahci, Individual differences can affect how networks respond to demo...

1.The social decisions that individuals make, in terms of where to move, who to interact with and how frequently, scale up to generate social structure. Such structure has profound consequences: individuals each have a unique social environment, social interactions can amplify or dampen individual differences at the population level, and population...

Animal societies are shaped both by social processes and by the physical environment in which social interactions take place. While many studies take the observed patterns of inter-individual interactions as products and proxies of pure social processes, or as links between resource availability and social structure, the role of the physical config...

In group-living species, social stability is an important trait associated with the evolution of complex behaviours such as cooperation. While the drivers of stability in small groups are relatively well studied, little is known about the potential impacts of unstable states on animal societies. Temporary changes in group composition, such as a soc...

Temporal variation in environmental conditions affects population growth directly via its impact on vital rates, and indirectly through induced variation in demographic structure and phenotypic trait distributions. We currently know very little about how these processes jointly mediate population responses to their environment. To address this gap,...

Los capibaras son los roedores más grandes delmundo, sin embargo, no se han realizado estudios gené-tico poblacionales exhaustivos con ellos. En el presentetrabajo se analizó la estructura genética de una manadade 31 capibaras (Hydrochoerus hydrochaeris) muestreadaen Hato Corozal, Departamento de Casanare en los Llanos Orientales de Colombia, media...

Recent advances in technology allow researchers to automate the measurement of animal behaviour. These methods have multiple advantages over direct observations and manual data input as they reduce bias related to human perception and fatigue, and deliver more extensive and complete datasets that enhance statistical power. One major challenge that...

Variation in extra-pair paternity (EPP) among individuals of the same population could result from stochastic demography or from individual differences in mating strategies. Although the adaptive value of EPP has been widely studied, much less is known about the characteristics of the social environment that drive the observed patterns of EPP. Here...

1. Recent advances in technology allow researchers to automate the measurement of animal behaviour. These methods have multiple advantages over direct observations and manual data input as they reduce bias related to human perception and fatigue, and deliver more extensive and complete data sets that enhance statistical power. One major challenge t...

In response to climatic and other sources of environmental variation, individuals within a population may adjust their behavioral, morphological or physiological responses to varying environmental conditions through phenotypic plasticity. In seasonal environments, time constraints related to seasonality, as well as variation in climatic factors, ma...

Amicable social interactions can enhance fitness in many species, have negligible consequences for some, and reduce fitness in others. For yellow-bellied marmots (Marmota flaviventris), a facultatively social rodent species with demonstrable costs of social relationships during the active season, the effects of sociality on overwinter survival have...

Relationships between conspecifics are influenced by both ecological factors and the social organization they live in. Systematic variation of both—consistent with predictions derived from socioecology models—is well documented, but there is considerable variation within species and populations that is poorly understood. The mountain gorilla (Goril...

Betancourt, A., Maldonado, A., Maldonado, R., Camargo, A., Guzmán, A., Annicchiarico, I., Arroyave, J., Malagón, N., Pardo, L., Pérez, H., Ruiz, A., Eljach, L. & Camacho, M. (2002). Efectos de la inversión de la imagen en el reconocimiento de rostros [Image inversion effect on face recognition]. Acta Biológica Colombiana, 7, 53-57.

Demographic variation, such as changes in population size, affects group-living conditions and thus creates new opportunities for individuals to interact socially. To understand how this variation in the social environment affects social structure, we used social network analysis to explore affiliative behaviors of nonpup (i.e., 1 year or older), f...

Phenotypic plasticity, the ability of an individual to modify its phenotype according to the conditions it experiences, is a source of between-individual variation and a mechanism by which individuals can cope with environmental change. Plasticity is expected to evolve in response to environmental heterogeneity, such as seasonality and year-to-year...

Emitting alarm calls may directly benefit individuals if callers have an increased chance of surviving, if calling increases the caller’s status, or if calling functions through reciprocity. Although previous studies have examined the costs and benefits of alarm calling, few have examined how an individual’s social position can influence the propen...

Background/Question/Methods Demographic variation, such as changes in population size affect group living conditions, thus creating new opportunities for individuals to socially interact. To understand how this variation in the social environment affects social structure, we used social network analysis to analyse affiliative behaviors of non-pup...

Resumen D esarrollamos un modelo de evaluación del hábitat disponible para el chigüiro (Hy-drochoerus hydrochaeris) en las sabanas inundables de la Orinoquía colombiana, usando los Procedimientos de Evaluación de Hábitat (HEP) propuestos por la U.S. Fish and Wildlife Service. Aplicamos el modelo en cuatro cuadrantes de 3600 ha en los municipios de...

Resumen L a ecología del comportamiento es una disciplina que aunque no ha sido formal-mente incluida como una de las ciencias que aportan a la conservación biológica, es usada como base para el desarrollo de muchas investigaciones realizadas en este cam-po. Este artículo tiene como objetivo plasmar la importancia del comportamiento animal en la di...

Resumen E valuamos la calidad del hábitat disponible para el chigüiro (Hydrochoerus hydrochae-ris) en dos cuadrantes de 3600 ha en el municipio de Paz de Ariporo (Hato Miramar y Hato Las Taparas), Casanare. Realizamos la evaluación del hábitat y utilizamos un modelo de evaluación que incorpora algunos requerimientos básicos de la especie y caracter...

Resumen E l chigüiro es una especie con alto potencial de aprovechamiento debido a sus carac-terísticas biológicas y ecológicas. Por esta razón es utilizada con fines comerciales y de subsistencia en países como Colombia, Venezuela, Brasil y Argentina. En Colombia, el aprovechamiento de sus poblaciones se realiza directamente del medio, lo cual ha...

Background/Question/Methods Individuals in a population may adjust their phenotypic response to varying environmental conditions. Such plastic responses often entail changes in an individual’s behavioral, morphological or physiological traits and may affect population dynamics. Here we investigate the extent to which individuals in a population e...

Uno de los aspectos ecológicos clave para definir estrategias de manejo de poblaciones animales sociales es el tamaño y la estructura social del grupo. Esta investigación tuvo como objetivo identificar la estructura genética y variabilidad interna de un grupo de Chigüiros (Hydrochoerus hydrochaeris) que comparten el mismo espacio geográfico. La est...

The capybaras are the biggest rodents in the world but, however, there are not extensive population genetics studies on them. In the current work, we studied the genetic structure of a troop of 31 capybaras (Hydrochoerus hydrochaeris) sampled in Hato Corozal, Casanare Department at the Colombian Eastern Llanos, by means of five microsatellite marke...

Little is known about spatial induced processes regulating population dynamics in capybara (Hydrochoerus hydrochaeris), a social rodent from the lowlands of South America, an aspect that may explain the causative mechanism involved in a spatial densitydependent process like mortality and dispersal. We investigated and compared the spatial pattern o...

Capybaras (Hydrochoerus hydrochaeris) are the world’s largest rodent. Free-living populations are commercially harvested for their meat and leather in Colombia, Venezuela and Argentina; however, there is concern that legal and illegal harvesting is not sustainable. Since capybaras are considered an economic resource, there have been several attempt...