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KARYOLOGY OF BANGIA ATROPURPUREA (RHODOPHYTA, BANGIALES) FROM MEDITERRANEAN AND NORTHEASTERN ATLANTIC POPULATIONS 1
Author(s) -
Gargiulo Gaetano M.,
Masi Flora,
Tripodi Giacomo
Publication year - 1991
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1991.00306.x
Subject(s) - biology , karyotype , thallus , mediterranean climate , ploidy , mediterranean sea , population , zoology , chromosome , botany , ecology , genetics , gene , demography , sociology
We studied the karyology of Bangia atropurpurea (Roth) C. Ag. collected from marine and freshwater populations from the Mediterranean region and some northeastern Atlantic localities. Gametophytic thalli had two haploid karyotypes, n = 3 and n = 4. The n = 4 karyotype was only occasionally present in the Mediterranean and was also found in one Atlantic population, confirming a previous report. We propose that the four‐chromosome karyotype is an aneuploid form, n + 1. Chromosomes were frequently observed either in a parallel arrangement or in a circular configuration.