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October 2011 - present
Publications
Publications (40)
[This corrects the article DOI: 10.1371/journal.pone.0237315.].
The decision to allocate time and energy to find multiple sexual partners or raise children is a fundamental reproductive trade-off. The Strategic Pluralism Hypothesis argues that human reproductive strategies are facultatively calibrated towards either investing in mating or parenting (or a mixture), according to the expression of features depende...
The Male Warrior Hypothesis (MWH) establishes that men’s psychology has been shaped by inter-group competition to acquire and protect reproductive resources. In this context, sex-specific selective pressures would have favored cooperation with the members of one’s group in combination with hostility towards outsiders. We investigate the role of dev...
Bodily attractiveness is an important component of mate value. Musculature-a crucial component of men's bodily attractiveness-provides women with probabilistic information regarding a potential mate's quality. Overall musculature is comprised of several muscle groups, each of which varies in information value; different muscles should be weighted d...
Objectives
Strategic Pluralism Theory contends that human mating strategies are calibrated toward short‐term (ST) or long‐term (LT) mating according to the expression of condition‐dependent traits and characteristics of the social and physical environment. Traits reflecting the effects of testosterone have been considered condition‐dependent traits...
In this paper, we introduce a novel parameter, called Cytogenetic Identity, to describe differences and similarities between genomes. Using Whole Comparative Genomic Hybridization plus Digital Image Analysis, we present a new methodology that employs the whole genome, including highly repeated DNA sequences, to provide a general picture about the d...
Wolbachia are endosymbiotic bacteria of arthropods and nematodes that can manipulate the reproduction of various host organisms to facilitate their own maternal transmission. Moreover, Wolbachia’s presence in host germ cells may contribute to the many cases of lateral gene transfer from Wolbachia to host genomes that have been described. A previous...
In this study, we applied an evolutionary perspective to analyze the relationship between aggressiveness, academic performance, and sociality in a population of 528 adolescents of both sexes. In men, we expect physical aggression and sociality to be negative predictors of academic performance. However, in women, physical aggression would be a negat...
Sample sizes of PCR screen for WO minor capsid gene
Numbers represent individual grasshoppers. Cpp, Chorthippus parallelus parallelus; Cpe, Chorthippus parallelus erythropus.
Locus tags for WO minor capsid variants used for orf7 phylogeny
All accession numbers are from GenBank unless bolded, which are from the EMBL-EBI database. “No annotation” means that the phage genome is sequenced but not annotated. “N/A” means that the phage genome or phage gene has not been sequenced.
PCR amplification of Wolbachia and WO genes
Wolbachia genes (16S rRNA and ftsZ) and the phage WO orf7 gene were amplified from Gabas uninfected grasshoppers used for high-throughput sequencing (Gabas U1–U3) and a Portalet uninfected grasshopper for comparison (Portalet U). Wolb (+) and (−) controls are from Wolbachia-infected and tetracycline-cured...
Number of sequences obtained through cloning and Sanger sequencing of WO minor capsid gene for individual grasshoppers
Alignment of WO minor capsid sequences from cloning and Sanger sequencing with assembled contigs from Illumina sequencing
Contigs are grouped with their most similar WO allele identified through Sanger sequencing. Nucleotides are counted from start of the sequence alignment, not from the transcription start site of the gene.
Statistics for reads mapped to Wolbachia genomes from multiple supergroups
Shared genes between B and F Wolbachia inserts in the grasshopper genome
wPip reference genome: GenBank AM999887; wCle reference genome: GenBank AP013028.
Sequence of Wolbachia contig used for FISH probes
Hybrid zones and the consequences of hybridization have contributed greatly to our understanding of evolutionary processes. Hybrid zones also provide valuable insight into the dynamics of symbiosis since each subspecies or species brings its unique microbial symbionts, including germline bacteria such as
Wolbachia
, to the hybrid zone. Here, we inv...
Prior research has suggested that men overestimate women’s sexual intentions. However, the bulk of the data supporting this view comes from participants from the USA. Here, we report three attempts to replicate this effect in samples from Chile, Spain, and France. While there was some evidence of overestimation of sexual intent by men on the aggreg...
Attractiveness plays an important role in social exchange and in the ability to attract potential mates, especially for women. Several facial traits have been described as reliable indicators of attractiveness in women, but very few studies consider the influence of several measurements simultaneously. In addition, most studies consider just one of...
A recent and controversial hypothesis suggests the presence of an oestrus phase in women as in other mammals. This implies that women at their optimal fertility point of the menstrual cycle exhibit behaviors focused to maximize the genetic quality of their offspring. Several studies support this hypothesis, finding that women in the fertile phase t...
This chapter describes the various methods derived from the protocol of standard fluorescent in situ hybridization (FISH) that are used in human, animal, plant, and microbial studies. These powerful techniques allow us to detect and physically map on interphase nuclei, chromatin fibers, or metaphase chromosomes probes derived from single-copy genes...
W chromosome is the sex-limited chromosome in the ZW sex determination system. This system is typical of birds (and a few other groups). W chromosome is homologous to Z, but smaller and rich in heterochromatin. It appears only in female individuals, but it remains unclear whether the Z or W chromosome determines sex differentiation. It is also stil...
This chapter describes the various methods derived from the protocol of standard fluorescent in situ
hybridization (FISH) that are used in human, animal, plant and microbial studies. These powerful techniques allow us to detect and physically map on interphase nuclei, chromatin fiber or metaphase chromosomes probes derived from single copy genes, t...
The present paper analyzes the extent to which attractiveness-related variables affect cooperative behavior in women. Cooperativeness is evaluated through a Prisoner’s Dilemma Game (PDG). We consider several morphometric variables related to attractiveness: Fluctuating Asymmetry (FA),Waist-Hip Ratio (WHR), Body Mass Index (BMI) and Facial Femininit...
In this study, we examined the influence of female size on mating success in Drosophila melanogaster. The results that were obtained from experiments performed in mating chambers allowed us to confirm the results of previous studies, demonstrating higher mating success of larger D. melanogaster males, and to conclude that female size also affects m...
Whole comparative genomic hybridization (W-CGH) is a new technique that reveals cryptic differences in highly repetitive DNA sequences, when different genomes are compared using metaphase or interphase chromosomes. W-CGH provides a quick approach to identify differential expansion of these DNA sequences at the single-chromosome level in the whole g...
Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Biología. Fecha de lectura: 15-01-2007 Bibliogr.: h. 204-220
Whole-comparative genomic hybridization (W-CGH) allows identification of chromosomal polymorphisms related to highly repetitive DNA sequences localized in constitutive heterochromatin. Such polymorphisms are detected establishing competition between genomic DNAs in an in situ hybridization environment without subtraction of highly repetitive DNA se...
Significant similarity between human and gorilla genomes has been found in all chromosome arms, but not in centromeres, using whole-comparative genomic hybridization (W-CGH). In human chromosomes, centromeric regions, generally containing highly repetitive DNAs, are characterized by the presence of specific human DNA sequences and an absence of hom...
Differences in highly repeated DNA sequences among three swine breeds genomes were detected by means of whole-comparative genomic hybridization (W-CGH). The results showed that Duroc, Iberian and Landrace/Large White breeds share similar DNA sequences in their centromeric regions, but the number of copies of the highly repeated DNA sequences buildi...
Whole-comparative genomic hybridization (W-CGH) has been used to exemplify a simple methodology which allows identifying and mapping whole genome differences for highly repetitive DNA sequences between two related species of unknown genomic background. The use of this technique to the species binomy Arcyptera fusca/Arcyptera tornosi has allowed the...
Wolbachia are cytoplasmic proteobacteria which induce severe modifications in the reproductive behaviour of their arthropod hosts. Although common in insects and terrestrial isopods, Wolbachia have seldom been found in other arthropod groups. Based on PCR amplification and DNA sequencing of Wolbachia 16S rDNA we report the first record of these end...
Whole-comparative genomic hybridization (W-CGH) allows one to identify copy number differences in highly repeated DNAs between two genomes. It allowed the identification of nuclear markers that can be used to distinguish cell populations from different individuals in a chimeric situation. We discuss the reliability of W-CGH accomplished with fluore...
DNA fragmentation and the nuclear protein matrix in boar spermatozoa were simultaneously assessed using a specific variant of the sperm chromatin dispersion (SCD) test that allows direct visualization of DNA and nuclear proteins under standard conditions of chemical lysis. Nuclear proteins remaining after lysis were stained with the fluorochrome 2,...
Spatial and temporal patterns of frequency variation for a neutralized B chromosome in the grasshopper Eyprepocnemis plorans were analyzed along six transects in the east of Spain to explore possible factors affecting the population dynamics of this polymorphism. Three parameters were employed to quantify B frequency: prevalence, load and mean freq...
We present a technique (W-CGH) based on Comparative Genomic Hybridization (CGH), but using whole DNA probes, which permits the identification of chromosomal polymorphisms related to highly repetitive DNA sequences that exist between the two genomes compared. The procedure employs two differently colored whole DNA probes from two different individua...
Most of the techniques for simultaneous visualization of proteic cell components and DNA probes are difficult to carry out. We have developed an alternative protocol for simultaneous visualization of DNA probes and cell surface antigens in human cells. The method exploits microwave energy to denature DNA and to anneal the probe after antigen fluore...
