Citazione:
Messaggio inserito da platysternon
prima dici che devono esser riportate tutte le specie perchè riconosciute poi dici che le sottospecie in realtà son solo 5
Non lo dico certamente nè io nè te ma già lo avevo linkato:
http://www.pubmedcentral.nih.gov/articl ... id=1097724
Conclusion
Mitochondrial DNA haplotyping suggests that the tortoise subspecies of T. g. graeca and T. g. ibera are genetically distinct, with a calculated divergence time in the early or middle Pleistocene. Other proposed subspecies could not clearly be recognized based upon their mt haplotypes and phylogenetic position, and were either part of the T. g. graeca or of the T. g. ibera clade, suggesting that genetic evidence for the existence of most of the 15 proposed subspecies of T. graeca is weak.
Citazione:
Messaggio inserito da platysternon
Per dovere di cronaca?
Dov'è scritto che le specie elencate son state riconosciute?
Anche questo lo avevo già linkato
http://bmc.ub.uni-potsdam.de/1471-2148- ... 8-5-29.pdf
The latest revision of T. graeca systematics now includes
Published: 18 April 2005
BMC Evolutionary Biology 2005, 5:29 doi:10.1186/1471-2148-5-29
Received: 21 December 2004
Accepted: 18 April 2005
This article is available from:
http://www.biomedcentral.com/1471-2148/5/29
© 2005 van der Kuyl et al; licensee BioMed Central Ltd.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (
http://creativecommons.org/licenses/by/2.0),
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
BMC Evolutionary Biology 2005, 5:29
http://www.biomedcentral.com/1471-2148/5/29
le 15 sottospecie :
T. g. graeca Linnaeus 1758,
T. g. anamurensis Weissinger 1987,
T. g. antakyensis Perälä 1996,
T. g. armeniaca Chkhikvadze & Bakradze 1991,
T. g. buxtoni Boulanger 1920,
T. g. cyrenaica Pieh & Perälä 2002,
T. g. floweri Bodenheimer 1935,
T. g. ibera Pallas 1814,
T. g. nabeulensis Highfield 1990,
T. g. nikolskii Chkhikvadze&Bakradze 2002,
T. g. perses Perälä 2002,
T. g. soussensis Pieh 2001,
T. g. terrestris Forskål 1775,
T. g. zarudnyi Nikolsky 1896.
An overview of Testudo graeca taxonomy is
also available from the EMBL reptile database . However,
many novel descriptions have not been extended
with population research or DNA analysis, and thus the
contribution to the classification of T. graeca remains
unclear. Two dwarf forms of T. graeca that developed in
North Africa have been described as a new species or even
another genus: Testudo flavominimaralis and Furculachelys
nabeulensis . A rather large, highly domed form, originally
named Testudo whitei Bennett, 1836, was moved into
a new genus: Furculachelys whitei . This latter classification
could not be confirmed by mitochondrial DNA analysis
Of the generally accepted subspecies, T. g. graeca of northern
Africa, T. g. ibera from the Republic of Georgia, Bulgaria,
North-eastern Greece, Turkey (with the exception of
the Black Sea coast), Iran, and northern Iraq, and T. g. terrestris
from southern Turkey, Syria, Lebanon, Jordan and
Israel, are the best described. The fourth subspecies, T. g.
zarudnyi, is restricted to central and eastern Iran and
Afghanistan, while T. g. nikolskii was reported to inhabit
dry subtropic ecosystems along the north eastern Black
Sea coast . T. g. graeca has been introduced in recent
times in southern Spain and on the Spanish island of Mallorca
(see [). A morphological study suggested that the
first three subspecies should be elevated to full species
level ]. Furthermore, it was recently hypothesized
based on genetic analysis that T. graeca of western
Morocco constitutes a separate subspecies , provisionally
named Testudo graeca whitei. Morphologically it
was assigned full species status in an earlier study . T.
graeca shows variable colouring and patterning, which are
greatly influenced by environmental factors and make
subspecies identification difficult [, especially in captive
animals of unknown provenance. DNA analysis could
also be helpful in subspecies determination .
La Scienza é in divenire e non latrice di verità assolute come le religioni, quanto é a conoscenza ora è destinato ad essere superato tra pochi anni e così via, un po' come i record sportivi, ogni anno c'è qualcuno che ne migliora i tempi...
