Zweikampf Äskulapnattern

Funde & Beobachtungen

Moderator: Herpetofauna.at-Team

Ist neu hier
Beiträge: 2
Registriert: Do Mai 18, 2017 18:37

Zweikampf Äskulapnattern

Beitragvon Ridibunda » Fr Mai 19, 2017 13:20

Am 17.05.2017 in Tenno (nördlich von Riva del Garda) auf einem sonnigen Wiesenweg zu Mittag - ein 15-minütiges Schauspiel zweier Äskulapnattern im Kommentkampf, beide cirka 100cm lang.
Dateianhänge
Kopie von IMG_3782.JPG
Kopie von IMG_3782.JPG (245.08 KiB) 541-mal betrachtet

Moderator
Benutzeravatar
Beiträge: 530
Registriert: Mi Mär 20, 2002 2:00
Wohnort: Wolkersdorf im Weinviertel

Re: Zweikampf Äskulapnattern

Beitragvon Hannes » Sa Mai 20, 2017 9:14

Schönes Foto!
Bei den Schlangen handelt es sich um Gelbgrüne Zornnattern (Hierophis viridiflavus).
Hannes

Moderator
Benutzeravatar
Beiträge: 848
Registriert: Sa Mai 15, 2004 2:00
Wohnort: Salzburg, Austria

Re: Zweikampf Äskulapnattern

Beitragvon Vipersgarden » So Mai 21, 2017 14:12

Hannes hat geschrieben:Schönes Foto!
Bei den Schlangen handelt es sich um Gelbgrüne Zornnattern (Hierophis viridiflavus).

oder besser Carbonarschlangen, Hierophis (viridiflavus) carbonarius
Mario Schweiger

http://www.vipersgarden.at
.. und das neue englischsprachige Feldherpetologen-Forum - FIELDHERPING.EU

Fühlt sich wie zu Hause
Benutzeravatar
Beiträge: 571
Registriert: So Sep 03, 2006 17:36
Wohnort: Wien

Re: Zweikampf Äskulapnattern

Beitragvon pleurodeles » Mo Mai 22, 2017 22:26

Was ist denn jetzt der offiziell gültige Status - tatsächlich eine eigene Art? Liegen dem klare genetische Befunde zugrunde, oder ist das wieder nur so eine blödsinnige Pseudepidalea-Sache, die eh wieder bald verworfen wird? Kenne das Paper nicht...

LG,
Günther

Moderator
Benutzeravatar
Beiträge: 848
Registriert: Sa Mai 15, 2004 2:00
Wohnort: Salzburg, Austria

Re: Zweikampf Äskulapnattern

Beitragvon Vipersgarden » Di Mai 23, 2017 8:30

das sind sicher 2 genetische Linien. Ob man das als Arten oder Unterarten bezeichnet, ist eher Anschauungssache. Da es ja keine "offizielle" Anerkennung eines Status gibt. Eine der Linien setzt sich dann irgendwann durch, wenn sie von "genügend" anderen Autoren übernommen wird.

Rato, C., M.A.L. Zuffi, C. Corti, S. Fornasiero, A. Gentilli, E. Razzetti, S. Scali, M.A. Carretero & D.J. Harris (2009): Phylogeography of the European Whip Snake, Hierophis viridiflavus (Colubridae), using mtDNA and nuclear DNA sequences.- Amphibia-Reptilia 30 (2009): 283-289.
Abstract: The phylogeography of the colubrid snake Hierophis viridiflavus was estimated using ND4 mtDNA sequences and a fragment of the nuclear marker ß-fibrinogen intron 7. This species has a wide distribution across the Mediterranean region, and is characterized by three distinct colour patterns (“viridiflavus”, abundistic, and melanic-melanotic) with a quite well defined geographic distribution. The “viridiflavus” pattern occurs in the northwestern and central areas of the species’ range, the abundistic pattern is typical of the individuals from Corsica and Sardinia, and the melanic-melanotic coloration is present in northeastern and southern Italy, and Sicily. A total of 42 individuals from most of the species’ range (including Pyrenees, central France, Italian Peninsula, Corsica, Sardinia and Sicily) were analyzed. Results support the existence of two different mtDNA lineages, one from Spain, France, Corsica, Sardinia, and continental Italy mainly west of the Apennines, and another one occurring in the southern part of Italy and northeast of the Apennines, with a 4% genetic divergence between them. Since both mtDNA lineages are found in northwestern Italy, where the “viridiflavus” colour pattern is almost exclusively found, it is clear that colour pattern is not linked to the mtDNA clades. The same is evident for ß-fibrinogen, which is not subdivided geographically in the way that the mtDNA lineages are. Regarding Corsica and Sardinia, the limited genetic differentiation of island populations from the western continental lineage, indicates that these populations are a result of a recent colonization in accordance with recent described phylogeographic patterns.

Joger, U., U. Fritz, D. Guicking, S. Kalyabina-Hauf, Z.T. Nagy & M. Wink (2007): Phylogeography of western Palaearctic reptiles – Spatial and temporal speciation patterns.- Zoologischer Anzeiger 246 (2007) 293–313. Abstract: A phylogeographic analysis of eight species complexes of European reptiles was performed using different molecular methods. While mitochondrial genes (mainly cytochrome b sequences) enabled conclusions about phylogeography and differentiation, additional application of bisexually inherited markers provided information about speciation stages. As species with similar distribution patterns in southern and Central Europe were selected, matching phylogeographic patterns are useful for drawing general conclusions: (1) The species complexes are in different stages of speciation. In some cases, cryptic species were detected. (2) Highest genetic diversity occurs in southern Europe, the Near East and the Caucasus, regions corresponding with glacial refuges in the Iberian, Apennine and Balkan Peninsulas as well as in Turkey and the Caucasus. Often, several microrefugia must have existed in close neighbourhood. Additional microrefugia were located in southern France and in the Carpathian Basin. (3) North Africa and the Middle East did not serve as glacial refuges for Central or northern European lineages and are typically inhabited by independent clades. (4) Evidence for multiple range retractions and expansions, which were postulated for the times of Pleistocene climatic oscillations, could be found in the Balkans, but in Central Europe their traces have been wiped out by the last glacial. Only the Holocene invasion has left imprints in the genomes from this area. (5) Central and northern Europe were recolonized from Balkan and Pontic refugia in the Holocene. (6) Groups from the Iberian and Apennine Peninsulas rarely conquered other regions. This limitation can be attributed to the barrier function of the Pyrenees and the Alps.
Mario Schweiger

http://www.vipersgarden.at
.. und das neue englischsprachige Feldherpetologen-Forum - FIELDHERPING.EU

Ist neu hier
Beiträge: 2
Registriert: Do Mai 18, 2017 18:37

Re: Zweikampf Äskulapnattern

Beitragvon Ridibunda » Di Mai 23, 2017 10:37

Danke für die richtige Bestimmung, sorry für meine vorschnelle falsche! LG

Zurück zu Funde

Wer ist online?

Mitglieder in diesem Forum: Google [Bot] und 3 Gäste