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Chromosomes of two species of Tisbe (Copepoda, Harpacticoida) belonging to different groups of sibling species
Author(s) -
LAZZARETTO IVANA,
LIBERTINI ANGELO
Publication year - 1989
Publication title -
zoologica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 64
eISSN - 1463-6409
pISSN - 0300-3256
DOI - 10.1111/j.1463-6409.1989.tb00452.x
Subject(s) - biology , harpacticoida , ploidy , karyotype , sibling species , zoology , taxon , ecology , chromosome , crustacean , genetics , gene
Karyological investigations curried out on Tisbe marmorata and T. dobzhanskii confirmed the diploid value 2 n = 24 for the former species; on the basis of more than 200 observations it was ascertained that the diploid number of the latter species corresponds to 22, in contrast with a previous report. The karyotypes of these two species differ both in morphology and in location of satellites, not only from each other, but also from all other species so far examined. A close comparison of the two species with their respective siblings is made.