Caracterización de las (nuevas) relaciones románticas de adolescentes

The current study synthesizes some of the main contributions from recent research about the new forms and elements of heterosexual romantic relationships that individuals are adopting  uring the adolescent stage. These relationships are currently divided into formal and informal, the existence of the last ones is due to the replacement of the strict traditional environment because many changes that make up the postmodern era which, in turn, involves marked divergences in the process and content in current relationships and different areas of daily life. As a result of the analysis carried out, it is important to mention the limited existence of information about the subject and even more in the new relationships of couple in specific populations such as homosexual, indigenous or rural areas.Esta revisión narrativa sintetiza algunos de los principales aportes de investigaciones recientes acerca de las nuevas formas, los principales elementos y la importancia de las relaciones de parejas románticas heterosexuales que están adoptando los individuos durante la etapa adolescente, para ello se han considerado tres ámbitos importantes que en diversas épocas han sufrido variaciones modificando así estas relaciones de pareja, a saber: individual, familiar y social. La revisión narrativa de los textos incluidos indica que actualmente las relaciones son reconocidas como relaciones formales e informales, la existencia de éstas últimas es debido al reemplazo del estricto ambiente tradicional que fue modificado por los diversos cambios que integran la época posmoderna lo cual, a su vez implica marcadas divergencias en el proceso, contenido y estandarización de las relaciones  de pareja y los diversos términos que encontramos acerca de ellas. Como resultado añadido del análisis realizado se destaca la permanencia de algunos elementos de las relaciones de pareja de años pasados que aún se encuentran hasta el día de hoy, aunque son entendidos y operan de manera diferente, ejemplo de ello es el amor, el cariño, el compromiso, entre otros. Así mismo es importante mencionar la limitada existencia de información acerca de las relaciones de pareja, sobre todo en poblaciones específicas como aquellas procedentes de zonas rurales, homosexuales, indígenas o no escolarizadas

NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the Neotropics

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal-central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus, Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. (n = 37,782), Sus scrofa (n = 6,730), and Canis familiaris (n = 10,084); 17 species were represented by only one record (e.g., Syncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans). Primates have the highest number of species in the data set (n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata, and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation-related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data