Constantino Macías Garcia

TL;DR: A distillation of questions about the mechanisms of speciation, the genetic basis of speciating and the relationship between speciation and diversity are presented.

TL;DR: The amount of cellulose acetate from butts in nests of two widely distributed urban birds was negatively associated with the number of nest-dwelling parasites, providing the first evidence that smoked cigarette butts may function as a parasite repellent in urban bird nests.

TL;DR: It is concluded that house finches modify their songs in several ways in response to urban noise, thus providing evidence of a short-term acoustic adaptation.

TL;DR: It is shown that the terminal yellow band (TYB) of several Goodeinae species evokes both feeding and sexual responses; sexual responsiveness phylogenetically pre-dates the expression of the TYB in males and is comparable across taxa, yet feeding responsiveness decreases in species with more elaborated TYBs.

TL;DR: A very high rate of sex chromosome turnover in true frogs is shown, which may be driven by rapid mutation-load accumulation due to the low recombination rate in males, suggesting a key role for mutation- load accumulation in non-recombining genomic regions.