Low genetic variability in the highly endangered Mediterranean monk seal

Article Abstract:

The first description of nuclear genetic variability in the only remaining sizable colony of the Mediterranean monk seal (Monachus monachus), located at Cap Blanc (Western Sahara, Mauritania), whose estimated size during the study period (1994-May 1997) was about 320 individuals is given. Several analytical methods show that, as a consequence of a severe bottleneck, the population has suffered a decrease in genetic variability over the last few centuries.

Mediterranean region, Monk seals

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The genetic basis of the plumage polymorphism in red-footed boobies (Sula sula): A melanocortin-1 receptor (MC1R) analysis

Article Abstract:

The relationship between plumage polymorphism in red-footed boobies and allelic variation at the melanocortin-1 receptor (MC1R) gene was explored. Among the melanic plumage variants, a strong association was found between the degree of melanism and the number of copies of variant MC1R alleles.

Genetic polymorphisms, Allelomorphism, Alleles, Genetic research

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Genetic Structure of Asian Populations of Bombus ignitus (Hymenoptera: Apidae)

Article Abstract:

Microsatellite tests and cytochrome b sequences indicate that nearly all Bombus ignitus bumblebee populations on Asia's mainland and islands experienced recent bottlenecks, which, along with geographic isolation, account for genetic divergences.

Asia, Comparative analysis, Animal genetics, Insect populations, Bumblebees

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