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T. Karanovic 《Helgoland Marine Research》2000,54(1):33-38
A new species of Arenopontia (Neoleptastacus) is described on the basis of a single female collected from one sandy beach in Montenegro, Adriatic Sea. With the addition
of the new species, the subgenus Neoleptastacus now includes 18 species throughout the world. At the end of this paper there is a key for their determination.
Received: 20 March 1999 / Received in revised form: 15 September 1999 / Accepted: 21 September 1999 相似文献
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The banded karyotypes of 34 monkeys of known geographic origin and belonging to the Cercopithecus aethiops group of species
(C. aethiops, C. pygerythrus, C. cynosurus, C. sabaeus) show that chromosome evolution in this group is highly conservative. All species have 2n =60 chromosomes with very similar chromosome banding. However, differences were found both within and between species. A polymorphism
of the NOR area of the “marked” chromosome pairs was found in all taxa (9 of 34 animals). All individuals referred to C. sabaeus,from both West Africa and the Barbados, are characterized by having highly positive G- and C- banded terminal sequences on
chromosomes 7,10,12, and 14. Outgroup comparisons with other primates and a parsimony analysis suggest that these terminal
bands are derived and are probably good taxonomic and phylogenetic indicators. Moreover, chromosome 18 is variable both between
and within species in G banding and in short-arm length. The existence of within-species variation in karyotypes suggests
that karyological comparisons must be based on adequate samples that include specimens coming from all the major geographic
populations of the species concerned. 相似文献