Tamara Gómez-Moracho

Tamara Gómez-Moracho
Paul Sabatier University - Toulouse III | UPS Toulouse · Centre de Recherches sur la Cognition Animale - UMR 5169 - CRCA

PhD

About

131
Publications
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Introduction
Tamara Gómez-Moracho currently works at the Centre de Recherches sur la Cognition Animale - UMR 5169 - CRCA, Paul Sabatier University - Toulouse III. Tamara does research in Parasitology, Ecology and Entomology.

Publications

Publications (131)
Preprint
Increasing evidence highlights the importance of diet content in 9 essential amino acids for bee physiological and behavioral performance. However, the tenth essential amino acid, tryptophan, has been overlooked as its experimental measurement requires a specific hydrolysis. Tryptophan is the precursor of serotonin and vitamin B3, which together mo...
Article
Pollinators are exposed to numerous parasites and pathogens when foraging on flowers. These biological stressors may affect critical cognitive abilities required for foraging. Here, we tested whether exposure to Nosema ceranae, one of the most widespread parasites of honey bees also found in wild pollinators, impacts cognition in bumblebees. We inv...
Preprint
Full-text available
Environmental stressors have sublethal consequences on animals, often affecting the mean of phenotypic traits in a population. However, potential effects on variance are poorly understood. Since phenotypic variance is the basis for adaptation, any influence of stressors may have important implications for population resilience. Here we explored thi...
Article
Full-text available
Extended ground level structures like roads or field edges can be important cues for navigating animals, seen for example in road-following pigeons. In a landscape devoid of skyline cues but with a rectangular grid of pathways and roads, we used harmonic radar to track free-flying bumble bees, Bombus terrestris. Individual bees consistently used gr...
Preprint
Full-text available
Pollinators are exposed to numerous parasites and pathogens when foraging on flowers. These biological stressors may affect critical cognitive abilities required for foraging. Here, we tested whether exposure to Nosema ceranae , one of the most widespread parasite of honey bees also found in wild pollinators, impacts cognition in bumblebees. We inv...
Article
Full-text available
Parasites alter the physiology and behaviour of their hosts. In domestic honey bees, the microsporidia Nosema ceranae induces energetic stress that impairs the behaviour of foragers, potentially leading to colony collapse. Whether this parasite similarly affects wild pollinators is little understood because of the low success rates of experimental...
Article
The trypanosomatids Crithidia mellificae and Lotmaria passim are very prevalent in honey bee colonies and potentially contribute to colony losses that currently represent a serious threat to honey bees. However, potential pathogenicity of these trypanosomatids remains unclear and since studies of infection are scarce, there is little information ab...
Preprint
Full-text available
Parasites alter the physiology and behaviour of their hosts. In domestic honey bees, the microsporidia Nosema ceranae induces an energetic stress and impairs the behaviour of foragers, potentially leading to colony collapse. Whether this emerging parasite similarly affects wild pollinators is little understood because of the low success rates of ex...
Article
Full-text available
Understanding how animal movements change across space and time is a fundamental question in ecology. While classical analyses of trajectories give insightful descriptors of spatial patterns, a satisfying method for assessing the temporal succession of such patterns is lacking. Network analyses are increasingly used to capture properties of complex...
Article
Full-text available
A major difficulty in studying the behaviour of social insects, such as bees, is to collect quantitative data on large numbers of individuals and over long periods of time, in sometimes dark and not easily accessible nests. Over the past decade, connected hives equipped with large sets of sensors to monitor real-time data about bee colony health an...
Article
Nosema ceranae is the most prevalent endoparasite of Apis mellifera iberiensis and it is a major health problem for bees worldwide. The infective capacity of N. ceranae has been demonstrated experimentally in honey bee brood, however no data are available about its prevalence in brood under natural conditions. Thus, brood combs from 10 different hi...
Article
Full-text available
Animals have evolved foraging strategies to acquire blends of nutrients that maximize fitness traits. In social insects, nutrient regulation is complicated by the fact that few individuals, the foragers, must address the divergent nutritional needs of all colony members simultaneously, including other workers, the reproductives, and the brood. Here...
Chapter
Over the past decades, research on insect cognition has made considerable advances in describing the ability of model species (in particular bees and fruit flies) to achieve cognitive tasks once thought to be unique to vertebrates, and investigating how these may be implemented in a miniature brain. While this lab-based research is critical to unde...
Article
Full-text available
Microbes influence a wide range of host social behaviors and vice versa. So far, however, the mechanisms underpinning these complex interactions remain poorly understood. In social animals, where individuals share microbes and interact around foods, the gut microbiota may have considerable consequences on host social interactions by acting upon the...
Article
Full-text available
Bees are key pollinators and their widespread decline has raised considerable concerns regarding the sustainability of ecosystems and food production. Many environmental stressors do not directly kill bees, but they alter their physiology and behaviour, ultimately impacting colonies and populations. 2. This review considers the impact of parasites...
Article
Full-text available
Pathogens are major suspects for the current massive losses of honey bee colonies worldwide. Information about circulation and modes of transmission of Nosema ceranae, an emergent microsporidium parasite of Apis mellifera, is currently lacking. Here we examine the dispersion of N. ceranae and N. apis by the blue-tailed bee-eater Merops philippinus,...
Article
Full-text available
Crithidia mellificae, a trypanosomatid parasite of Apis mellifera, has been proposed to be one of the pathogens responsible for the serious honey bee colony losses produced worldwide in the last decade, either alone or in association with Nosema ceranae. Since this pathogenic effect contradicts the results of the experimental infections originally...
Article
Many European and North American countries have reported losses in honey bee populations over recent years. Although multiple factors appear to be involved in this decline, the influence of pathogens may be particularly important. In the present study, we analyzed the presence of the major honey bee pathogens and neonicotinoid insecticides in ten p...
Article
Full-text available
Two microsporidians are known to infect honey bees: Nosema apis and Nosema ceranae. Whereas population genetics data for the latter have been released in the last few years, such information is still missing for N. apis. Here we analyze the patterns of nucleotide polymorphism at three single-copy loci (PTP2, PTP3 and RPB1) in a collection of Apis m...
Data
Median-joining haplotype network for three N. ceranae loci according to their A. mellifera lineage: PTP2 (A), PTP3 (B) and RPB1 (C). Haplotypes are depicted by circles, the width being proportional to their frequencies (only shared haplotypes are named). Color codes are as follows; blue: lineage A (isolates 839 (Algeria), 57 and 253 (Spain), 169 (B...
Data
Origin and accession numbers of N. ceranae sequences obtained from A. mellifera honey bees. (XLS)
Data
Number of occurrences and nucleotide variants of PTP2A haplotypes from N. apis. (XLS)
Data
Origin and accession numbers of N. apis sequences obtained from A. mellifera honey bees. (XLS)
Data
Number of occurrences and nucleotide variants of PTP3A haplotypes from N. apis. (XLS)
Data
Number of occurrences and nucleotide variants of RPB1A+B haplotypes from N. apis. (XLS)
Data
Ratio of nonsynonymous to synonymous divergence (dN/dS) between N. apis and N. ceranae (Yang and Nielsen method). (XLS)
Data
Number of occurrences and nucleotide variants of RPB1A haplotypes from N. apis. (XLS)
Data
Meiotic genes in different microsporidian species. (XLS)
Article
Acarapisosis is a disease of the adult honey bee Apis mellifera L., caused by the tracheal mite Acarapis woodi (Rennie), that affects the prothoracic tracheas of worker honey bees. Although it is not usually considered a real problem for honey bee colonies in southern Europe (mainly Spain and Greece), where the majority of professional beekeepers a...
Article
Full-text available
Background Here we present a holistic screening of collapsing colonies from three professional apiaries in Spain. Colonies with typical honey bee depopulation symptoms were selected for multiple possible factors to reveal the causes of collapse. Results Omnipresent were Nosema ceranae and Lake Sinai Virus. Moderate prevalences were found for Black...
Article
The microsporidian Nosema ceranae is an emergent pathogen that threatens the health of honeybees and other pollinators all over the world. Its recent rapid spread across a wide variety of host species and environments demonstrated an enhanced ability of adaptation, which seems to contradict the lack of evidence for genetic recombination and the abs...
Conference Paper
Full-text available
Nosema ceranae es uno de los patógenos más importantes que afectan a la industria apícola en todo el mundo. Recientes estudios muestran una alta prevalencia en Europa, sobre todo en los países Mediterráneos, como por ejemplo, España e Italia. Razones no aclaradas totalmente (medio ambiente, genética del hospedador y del parasito, etc.), hacen que e...
Article
Infection of honey bees by the microsporidian Nosema ceranae is considered to be one of the factors underlying the increased colony losses and decreased honey production seen in recent years. However, these effects appear to differ in function of the climatic zone, the distinct beekeeping practices and the honey bee species employed. Here, we compa...
Article
Full-text available
SUMMARY Nosema ceranae is a widespread honeybee parasite, considered to be one of the pathogens involved in the colony losses phenomenon. To date, little is known about its intraspecific genetic variability. The few studies on N. ceranae variation have focused on the subunits of ribosomal DNA, which are not ideal for this purpose and have limited r...