Summary
Aedes albopictus is commonly distributed in most parts of the Oriental region and on many islands in the Indian and the Pacific Oceans. The species was recently introduced into the United States and Brazil. Feulgen cytophotometric quantitation of haploid nuclear DNA content was carried out for 37 populations of Ae. albopictus to determine the extent of intraspecific variation in nuclear DNA content and whether the range expansion of the species has coincided with an increase in DNA content. The haploid nuclear DNA content varied nearly three-fold. The minimum DNA content was 0.62 pg in Koh Samui from Thailand, and the maximum DNA content was 1.66 pg in Houston-61 from the United States. Statistical comparisons of populations revealed significant differences in DNA contents. No geographic clustering of populations was noted with respect to DNA content. In general, populations from the United States and Brazil had higher DNA contents, but there was no indication that the range expansion had occurred hand in hand with an increase in DNA content. Each population had a specific amount of DNA that is probably imposed by the microenvironment.
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Kumar, A., Rai, K.S. Intraspecific variation in nuclear DNA content among world populations of a mosquito, Aedes albopictus (Skuse). Theoret. Appl. Genetics 79, 748–752 (1990). https://doi.org/10.1007/BF00224239
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DOI: https://doi.org/10.1007/BF00224239