Title | Simple DNA repeats and sex chromosome differentiation in asellus aquaticus (Crustacea, isopoda) |
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Type | Journal article |
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Authors | Volpi, E.V., Pelliccia, F., Lanza, V., Barzotti, R. and Rocchi, A. |
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Abstract | The crustacean isopod species Asellus aquaticus does not usually have recognizable sex chromosomes. We previously identified a Y chromosome marked by two heterochromatic bands in some males of a population from the Sarno river near Naples. In this work we used oligonucleotide probes to test the presence and possible sex-specific distribution of five simple repeat motifs in the genome of male and female individuals from the Sarno population. The five oligonucleotide probes were hybridized to enzyme-restricted genomic DNAs and the chromosome location of two probes was tested using fluorescence in situ hybridization. Our results show that only the (TCC)n repetitive simple sequence has a sex-specific hybridization pattern and presents a significant accumulation on the Y chromosome in the region included between the two heterochromatic areas. Moreover the GGAAT sequence is not present in the genome of A. aquaticus in any detectable quantity. |
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Journal | Heredity |
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Journal citation | 75, p. 267–272 |
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ISSN | 0018-067X |
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| 1365-2540 |
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Year | 1995 |
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Publisher | Nature Publishing Group |
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Digital Object Identifier (DOI) | https://doi.org/10.1038/hdy.1995.134 |
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Publication dates |
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Published | 01 Sep 1995 |
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