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The article discusses a study published in the Volume 36.3 issue of the journal "Animal Biodiversity and Conservation" that examined the restocking procedures for European rabbits (Oryctolagus cuniculus) according to the International Union for Conservation of Nature. The researchers stated the factors affecting the translocation include risk of disease, release timing, and sex ratio. An overview of the phases implemented by the organization, and its success traits is also presented.

The article discusses research on the introduction of the exotic bird, great-tailed grackle Quiscalus mexicanus, into the Valley of Mexico during the period from 1486 to 1502 by Aztec Emperor Auitzotl. The ancient translocation of the said bird is considered as the earliest documented introduction of an exotic specie in the Western Hemisphere region. It offers an analysis of the four stages of Sahaguntine studies of exotic bird introduction including transport, establishment, and spread. It also stresses the importance of supplemental feeding and protection from human predation to ensure successful breed establishment.

Reciprocal and Robertsonian translocations are structural chromosomal aberrations that can produce unbalanced gametes during meiosis. In some cases, these imbalances lead to an offspring with multiple malformations. The purpose of this study was to propose and evaluate a methodology to estimate the risk of live offspring with unbalanced chromosome aberrations (LOUCA) from parents carrying a reciprocal or Robertsonian translocation. The methodology is based on comparing the results from several widely known regression methods: multiple linear, logistic and Poisson regression. Predictive accuracy was evaluated on a database containing information on 41 families of translocations carriers from three Cuban provinces. The results yielded by the three models were quite consistent regarding variable selection (presence of chromosome 9, chromosome 21 and the existence of breaking points in the short arms of the chromosomes involved) and risk estimation. There was a 80% overlap between the classifications produced by the three methods. [ABSTRACT FROM AUTHOR]

Evaluar la incidencia de las translocaciones t(4;11), t(1;19), t(9;22) y t(12;21) en leucemia linfoide aguda (LLA) y t(15;17), t(8;21) e Inv.(16) en leucemia mieloide aguda (LMA). Correlacionar los resultados obtenidos con el diagnóstico morfológico y citogenético.

Reciprocal and Robertsonian translocations are structural chromosomal aberrations that can produce unbalanced gametes during meiosis. In some cases, these imbalances lead to an offspring with multiple malformations. The purpose of this study was to propose and evaluate a methodology to estimate the risk of live offspring with unbalanced chromosome aberrations (LOUCA) from parents carrying a reciprocal or Robertsonian translocation. The methodology is based on comparing the results from several widely known regression methods: multiple linear, logistic and Poisson regression. Predictive accuracy was evaluated on a database containing information on 41 families of translocations carriers from three Cuban provinces. The results yielded by the three models were quite consistent regarding variable selection (presence of chromosome 9, chromosome 21 and the existence of breaking points in the short arms of the chromosomes involved) and risk estimation. There was a 80% overlap between the classifications produced by the three methods.