| comparison of blood values and health status of floreana mockingbirds (mimus trifasciatus) on the islands of champion and gardner-by-floreana, galápagos islands. | the floreana mockingbird (mimus trifasciatus) is one of the rarest bird species in the world, with an estimated 550 individuals remaining on two rocky islets off the coast of floreana, galápagos, ecuador, from which the main population was extirpated more than 100 yr ago. because they have been listed in critical danger of extinction, a plan to reintroduce this species to floreana has been initiated. determining the health status of the source mockingbird populations is a top priority within the ... | 2011 | 21270000 |
| microsatellite primers for the four galápagos mockingbird species (mimus parvulus, mimus macdonaldi, mimus melanotis and mimus trifasciatus). | nineteen di- and tetranucleotide and one trinucleotide microsatellite dna markers were isolated from the galápagos mockingbird (mimus parvulus) and tested for cross-species amplification in the other three mockingbird species in the galápagos. in addition, primers for two microsatellite loci previously developed for mimus polyglottos were redesigned to obtain shorter amplification fragments. the number of alleles per locus and species ranged from 1 to 8, and expected heterozygosity varied from 0 ... | 2009 | 21564952 |
| differentiation with drift: a spatio-temporal genetic analysis of galapagos mockingbird populations (mimus spp.). | small and isolated island populations provide ideal systems to study the effects of limited population size, genetic drift and gene flow on genetic diversity. we assessed genetic diversity within and differentiation among 19 mockingbird populations on 15 galápagos islands, covering all four endemic species, using 16 microsatellite loci. we tested for signs of drift and gene flow, and used historic specimens to assess genetic change over the last century and to estimate effective population sizes ... | 2010 | 20194174 |
| the origin and diversification of galapagos mockingbirds. | evolutionary radiations of colonists on archipelagos provide valuable insight into mechanisms and modes of speciation. the apparent diversification of galapagos mockingbirds (nesomimus) provoked darwin's initial conception of adaptive radiation, but the monophyly of this historically important exemplar has not been evaluated with molecular data. additionally, as with most galapagos organisms, we have a poor understanding of the temporal pattern of diversification of the mockingbirds following co ... | 2006 | 16610327 |
| saving darwin's muse: evolutionary genetics for the recovery of the floreana mockingbird. | the distribution of mockingbird species among the galápagos islands prompted charles darwin to question, for the first time in writing, the 'stability of species'. some 50 years after darwin's visit, however, the endemic floreana mockingbird (mimus trifasciatus) had become extinct on floreana island and, today, only two small populations survive on two satellite islets. as darwin noted, rarity often precedes extinction. to avert extinction, plans are being developed to reintroduce m. trifasciatu ... | 2010 | 19923141 |