Nuclear DNA content in two Sphaeriidae species from Southern Chile (Bivalvia: Veneroida)
Nuclear DNA content in two Sphaeriidae species from Southern Chile (Bivalvia: Veneroida)
Authors
Jara Seguel, Pedro
Parada Zamorano, Esperanza
Peredo, Santiago
Palma Rojas, Claudio
von Brand, Elisabeth
Parada Zamorano, Esperanza
Peredo, Santiago
Palma Rojas, Claudio
von Brand, Elisabeth
Authors
Date
Datos de publicación:
10.1080/13235818.2016.1253450
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Abstract
The family Sphaeriidae is a group of cosmopolitan freshwater clams that inhabit temporary and permanent fluvial and lacustrine environments around the world. In Chile, Sphaeriidae is represented by 11 species belonging to the genera Musculium, Pisidium and Sphaerium. In this study, the nuclear DNA content (or 2C-value) of Musculium argentinum (d'Orbigny, 1835) and Pisidium llanquihuense Ituarte, 1999 was estimated for the first time. Musculium argentinum showed a 2C-value of 3.7 +/- 0.38 pg, whereas P. llanquihuense showed a 2C-value of 3.57 +/- 0.36 pg. These 2C-values are within the range previously reported for Sphaeriidae (2.35-5.7 pg), which includes diploids and polyploids, amounting to 13 of the species examined around the world. Of the cytological data available for the family, the nuclear DNA content can have a unifying role in understanding the magnitude of the chromosome polymorphisms within this polyploid complex.