Mexicana de Aviación the world's fourth oldest airline operating under the same name, after the Netherlands's KLM, Colombia's Avianca and Australia's Qantas. In 2009, the Mexicana group of airlines (including Mexicana Click and Mexicana Link) carried just over 11 million passengers (6.6 million on domestic routes and 4.5 million on international routes), using a fleet of some 110 aircraft. Over the three years prior to folding, the Mexicana group had increased their share of what was a burgeoning domestic market, from around 22% at the beginning of 2007 to somewhere between 28% and 30% for most of their final 12 months. This was
Scaptotrigona mexicana same colony all have one of two maternal alleles, which guarantees relatedness as offspring of the same queen. This species chooses to forms drones in order to encourage outbreeding which increases the fitness of the colony unlike inbreeding. As a eusocial species, it has been observed that "S. mexicana" occasionally exemplify foraging behavior. Additionally, "S. mexicana" have been seen recruiting nestmates in order to enhance overall communication to enhance food behavior and food consumption. Given that "S. mexicana" are monandrous, the genotypes of the workers of each individual colonies does indicate a single patriline, indicated by one paternal allele that