Microsatellite markers isolated from the flightless cormorant (Phalacrocorax harrisi)

Area of Science:

• * Genetics
• * Evolutionary Biology
• * Conservation Biology

Background:

• * The flightless cormorant (Phalacrocorax harrisi) is an endemic species of the Galápagos Islands facing potential conservation challenges.
• * Understanding the population genetics of this species is crucial for effective conservation strategies.
• * Microsatellite DNA markers are valuable tools for assessing genetic diversity within populations.

Purpose of the Study:

• * To isolate and characterize polymorphic microsatellite DNA loci for the flightless cormorant.
• * To evaluate the genetic variability within two distinct populations of this species.
• * To assess the suitability of these newly developed markers for future population genetic analyses.

Main Methods:

• * Isolation of eight polymorphic microsatellite DNA loci from the flightless cormorant.
• * Genotyping of at least 38 individuals from two different populations.
• * Analysis of allele numbers, observed heterozygosity, and deviations from Hardy-Weinberg (HW) and linkage equilibria.

Main Results:

• * Eight polymorphic microsatellite loci were successfully isolated.
• * Allele numbers per locus ranged from three to nine, with mean observed heterozygosity values between 0.27 and 0.78.
• * No significant deviations from Hardy-Weinberg or linkage equilibria were observed in either population.

Conclusions:

• * The developed microsatellite markers are highly polymorphic and suitable for population genetic studies of the flightless cormorant.
• * These genetic tools will aid in understanding the population structure and diversity of this unique Galápagos species.
• * The findings support the utility of these markers for future conservation genetic research on Phalacrocorax harrisi.