Nicoletta Righini

Nicoletta Righini
University of Guadalajara | UDG · Instituto de Investigaciones en Comportamiento Alimentario y Nutrición (IICAN)

PhD in Biological Anthropology

About

60
Publications
14,173
Reads
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1,236
Citations
Introduction
My interests revolve around the factors that influence diet selection and nutrient regulation in several organisms, and their behavioral and physiological adaptations to acquire food and meet their nutritional goals. To do this, I adopt a multidisciplinary and multitaxonomic approach, using insects, mollusks, birds and mammals (bats, primates) as models. Animal Behavior | Ecophysiology | Nutrition | Nutritional Ecology
Additional affiliations
March 2017 - March 2019
Instituto de Investigaciones en Ecosistemas y Sustentabilidad IIES
Position
  • PostDoc Position
August 2014 - December 2016
Institute of Ecology INECOL
Position
  • PostDoc Position
Education
August 2006 - March 2014
August 2000 - May 2003
Institute of Ecology INECOL
Field of study
  • Ecologia y Manejo de Recursos Naturales
November 1992 - July 1998
University of Florence
Field of study
  • Scienze Naturali (Natural Sciences)

Publications

Publications (60)
Article
Full-text available
Nutritional ecology seeks to explain, in an ecological and evolutionary context, how individuals choose, acquire, and process food to satisfy their nutritional requirements. Historically, studies of primate feeding ecology have focused on characterizing diets in terms of the botanical composition of the plants consumed. Further, dietary studies hav...
Article
Full-text available
Homeostatic responses of animals to environmentally induced changes in nutrient requirements provide a powerful basis for predictive ecological models, and yet, such responses are virtually unstudied in the wild. We tested for macronutrient‐specific compensatory feeding responses by free‐ranging golden snub‐nosed monkeys (Rhinopithecus roxellana) i...
Article
Full-text available
Journal of Behavior, Health & Social Issues 11(2): 27-35 (2020). La selección de la dieta es un proceso complejo, y para analizarla es necesario integrar información sobre la fisiología, el comportamiento, y los ambientes ecológicos y sociales en los que viven los sujetos de estudio. La ecología nutricional es una disciplina que justo nos puede ay...
Article
Gut bacteria may coexist with other groups of organisms, such as nematode parasites, that inhabit the gastrointestinal tract of primates; however, the possible effects of endoparasites on bacterial communities are frequently overlooked. Here we explored whether infection with Trypanoxyuris, an oxyurid gastrointestinal parasite, is associated with c...
Article
1. Diet quality and the presence and abundance of conspecifics feeding on the same food resource are critical factors that affect functional traits of many ani- mal species and influence ecological processes. 2. We hypothesized that in insects whose larvae live in groups of varying sizes in ephemeral and nutritionally variable environments, extrem...
Article
Full-text available
Animals living in anthropogenically disturbed habitats are exposed to environmental stressors which can trigger physiological reactions, such as chronic elevations of glucocorticoid hormones. Physiological responses to stressors may induce changes in the gut microbiome, most likely, facilitated by the gut-brain communication. Although these effects...
Article
Full-text available
In mammal herbivores, fiber digestion usually occurs predominantly in either the foregut or the hindgut. Reports of mechanisms showing synergistic function in both gut regions for the digestion of fiber and other nutrients in wild mammals are rare since it requires integrative study of anatomy, physiology and gut microbiome. Colobine monkeys (Colob...
Article
Full-text available
El Instituto de Investigaciones en Comportamiento Alimentario y Nutrición (IICAN) de la Universidad de Guadalajara se ha ubicado desde 2009 entre las instituciones mexicanas pioneras en el estudio del comportamiento alimentario, haciendo énfasis en la investigación multi, trans e interdisciplinaria de los fenómenos alimentarios y en la importancia...
Preprint
Full-text available
Background: In mammal herbivores, the digestion of fiber usually occurs predominantly in either the foregut or in the hindgut. However, how both gut regions function synergistically in the digestion of fiber and other nutrients has rarely been reported in wild mammals. This requires an integrative study of host anatomy, physiology and gut microbiom...
Article
Full-text available
Studies of feeding patch choice in primates have traditionally analyzed individual foraging decisions in relation to patterns of social foraging, dominance, and feeding competition. However, information on detailed ecological and nutritional characteristics of the patches also is needed to understand the basis of feeding patch preferences. In parti...
Article
Full-text available
Fibropapillomatosis (FP) is a neoplastic disease affecting marine turtles around the tropics. Juvenile green sea turtles (Chelonia mydas) seem to be the most affected by the cutaneous tumors, which are not malignant but depending on their number, size, and location, can hamper survival. FP prevalence in sea turtles has increased over the past few d...
Article
Full-text available
p>La selección de la dieta es un proceso complejo, y para analizarla es necesario integrar información sobre la fisiología, el comportamiento, y los ambientes ecológicos y sociales en los que viven los sujetos de estudio. La ecología nutricional es una disciplina que justo nos puede ayudar a explorar las interacciones dinámicas entre los alimentos...
Conference Paper
Full-text available
Milkweeds produce cardenolides to protect against herbivores, and monarch butterflies sequester these plant toxins to protect against predators. Although most predators are deterred by these potent sodium pump inhibitors, black-eared mice (Peromyscus melanotis) in central Mexico extensively forage on over-wintering monarchs. We hypothesize that the...
Book
Full-text available
The book is a collection of the articles published in the Special Issue of Micromachines devoted to glassy materials' characterisation, processing and applications.
Article
Full-text available
Glassy materials, i.e., glasses and most polymers, play a very important role in microtechnologies and photonics[...]
Article
Full-text available
En este ensayo ofrecemos un análisis a nivel internacional del papel, las problemáticas y las perspectivas laborales de los posdoctorantes en ciencias. A pesar de que el concepto de entrenamiento posdoctoral surgió para reforzar las habilidades de los recién graduados, no existe una definición consistente de la naturaleza de esta posición. Aquí ana...
Conference Paper
Full-text available
The gastrointestinal (GI) tract of non-human primates is inhabited by a range of microorganisms, including bacteria, archaea, microbial eukaryotes, and viruses. While these organisms undoubtedly interact with each other, most studies to date describe relationships between hosts and single groups of GI microorganisms. However, understanding the asso...
Chapter
Full-text available
Platyrrhines are characterized by a broad diversity of behavioral and morphological adaptations that facilitate the exploitation of diverse plant and animal resources. Whereas feeding ecology has long been a major topic of primate field studies and focused on time spent feeding to describe primate diets, the recent past has witnessed a growing inte...
Article
Full-text available
Animals may face periods of nutritional stress due to short-term food shortage and/or low energy consumption associated with seasonal fluctuations in resource availability. We tested the hypothesis that periods of restricted macronutrient and energy intake result in energy deficits and physiological stress in wild black howler monkeys (Alouatta pig...
Article
Full-text available
Insects are known to be able to regulate food ingestion according to its nutrient composition rather than its energetic content. Several studies have found that individuals can feed selectively when given the opportunity, and balance the intake of different nutrients so as to optimize fitness. However, there are cases in which individuals do not st...
Data
Supplementary Table 1. Relationships between physiological measures and proxies of nutritional status across primate taxa
Article
We provide an extensive review on current knowledge and future research paths on the topic of resource allocation and compensation during development in holometabolous insects, emphasizing the role of resource management during development, and how compensatory mechanisms may be acting to remediate nutritional deficiencies carried over from earlier...
Article
Full-text available
Recent studies suggest that variation in diet across time and space results in changes in the mammalian gut microbiota. This variation may ultimately impact host ecology by altering nutritional status and health. Wild animal populations provide an excellent opportunity for understanding these interactions. However, compared to clinical studies, mic...
Article
Full-text available
Understanding the nutritional basis of food selection is fundamental to evaluate dietary patterns and foraging strategies in primates. This research describes the phytochemical composition of the foods consumed by two groups of Mexican black howler monkeys (Alouatta pigra) during a 15-month field study, and examines how plant nutritional chemistry...
Chapter
Full-text available
The mammalian gut microbiota is essential to many aspects of host phys-iology, including nutrition, metabolic activity, and immune homeostasis. Despite the existence of numerous studies of the impact of the gut microbiota on human health and disease, much work remains to be done to improve our understanding of the host-microbe relationship in nonhu...
Chapter
Full-text available
Howler monkeys exploit diffi cult-to-digest and potentially toxic food items such as mature leaves and unripe fruits; persist across an extreme range of habitat types, including highly disturbed forests; and have the most widespread geo-graphical distribution of any genus of New World primate. Given evidence of dietary variability in the amount of...
Conference Paper
Full-text available
Primates exploiting high altitude temperate forests face significant challenges in processing difficult to digest resources such as leaves, bark, lichen, and seeds to satisfy their nutritional needs. In this study, we used nutritional geometry to examine foraging decision in a free ranging troop of golden snub-nosed monkeys, an endangered Asian col...
Conference Paper
Full-text available
Primates living in tropical deciduous forests may face periods of food shortage and/or dietary shifts due to seasonal fluctuations in resource availability. To investigate whether black howler monkeys (Alouatta pigra) experience seasonal nutritional stress, we studied two groups living in a semi-deciduous forest in Campeche, Mexico during 15 months...
Data
Rarefaction curves showing the number of unique OTUs (sharing ≥ 97 % sequence identity) per total reads for each sample with CR individuals represented by a single sample each
Data
Pie charts showing the relative distribution of phyla as inferred by taxonomy among howler social groups and the outlying individuals.
Data
Total number of sequence reads, and associated gut microbiome richness and diversity indices with low and high confidence intervals (LCI, HCI) for each individual howler. Averages are also provided for each howler social group and habitat. Numbers in parentheses after each individual’s code indicate the number of samples that were pooled.
Data
Gut microbiome richness and diversity indices with low and high confidence intervals (LCI, HCI) at 9500 reads for each individual howler. Averages are also provided for each howler social group and habitat. Numbers in parentheses after each individual’s code indicate the number of samples that were pooled. Two captive samples are not listed due to...
Data
Gut microbiome richness and diversity indices with low and high confidence intervals (LCI, HCI) at 5000 reads for each individual CR howler sample. Averages are also provided for each individual howler. Weekly samples were excluded from the table if they were not collected or if less than 5000 reads were obtained.
Data
Percent of total feeding time spent consuming broad food resource categories by continuous evergreen forest (CR) and semi-deciduous forest (SD) groups.
Data
Percent of total feeding time spent consuming plant species by continuous evergreen forest (CR) and semi-deciduous forest (SD) groups.
Article
Full-text available
The gastrointestinal (GI) microbiome contributes significantly to host nutrition and health. However, relationships involving GI microbes, their hosts and host macrohabitats remain to be established. Here, we define clear patterns of variation in the GI microbiomes of six groups of Mexican black howler monkeys (Alouatta pigra) occupying a gradation...
Conference Paper
Full-text available
Recent models of nutritional ecology suggest that macro- and micronutrient balancing represent important factors in evaluating dietary patterns and foraging strategies in primates. During a 15-month field study of black howler monkeys (Alouatta pigra) in Campeche, Mexico, we investigated diet, bout duration, and sequential use of feeding sites to d...
Conference Paper
Background/Question/Methods All mammals rely on mutualistic microbial communities in the gut to provide them with energy via the fermentation of otherwise indigestible material. Laboratory studies have linked differences in host physiology and diet to differences in gut microbial community composition and also suggest that gut microbial community...
Article
Full-text available
Sexual conflict is increasingly recognized as a major force for evolutionary change and holds great potential for delineating variation in primate behavior and morphology. The goals of this review are to highlight the rapidly rising field of sexual conflict and the ongoing shift in our understanding of interactions between the sexes. We discuss the...
Article
Full-text available
This paper describes preliminary results on the temporal organisation of foraging behaviour in the limpet Patella caerulea in the North Adriatic Sea. Limpet activity was monitored in the field using radio telemetry during three continuous 15-day recording periods in spring, summer and winter. The results showed greater activity during immersion or...
Article
Full-text available
We examined the germination of Ficus seeds (subgenus Urostigma) after defecation by six primate species (New World monkeys, Old World monkeys, and apes). Seeds from figs (control) and primate feces were placed in a thermostatically controlled chamber for 30 days. Seeds defecated by Alouatta palliata, A. pigra, and Cercopithecus aethiops showed sign...
Article
Full-text available
A new version of a technique, based on telemetric devices, to monitor temporal aspects of the activity of homing species of limpets and the parallel recording of sea level oscillations is described. The home/away status of individual limpets was continually assessed by means of a magnetic reed switch. Signals from the reed sensors were transmitted...

Projects

Project (1)
Project
Nutritional geometry will allow us to determine if nectarivorous species are able to regulate the intake of protein and lipids independent of sugar regulation, and to assess if protein can be used as an energy source during periods of low nectar availability.