Pituitary Dwarfism DNA Database
GSD database under construction
My pedigree research began with my own dwarf 'Max' kennel name Franziska Riley which I show below as an example to others that this problem started and involves the very top dogs of the German Shepherd world. It would be very easy to swamp this page with dwarf pedigrees and produce a site that would be very confusing for anyone to try and identify their own lines within it. The carrier rate is now at such a level that I doubt there are any lines that are entirely free from carriers in a pedigree such has been the impact of some VA1 and V dogs of the past on the breed population. The only way to check today is to do a DNA test on all breeding dogs.
sire: VA1 Eiko vom Kirschental schH3
sire: VA5 Yago vom Wildsteigerland schH3 FH
dam: V Quina von Arminius schH2
G.sire: VA1 Ulk von Arlett schH3
sire: VA7 Fedor von Arminius schH2
dam: V Dolly von Arlett SchH2
dam: V5 Bambi vom Feldschlobchen 3
Sire: Maik vom Ohlenkopf (imp Ger)
sire: 2xVA2 Tell vom Grobensand 3
sire: 2xVA1 Fanto vom Hirschel schH3
dam: V Ica vom haus Reiterland schH3
G. dam: VA1 Ohla vom Hirshel
sire: Urk vom Monchberg schH3
dam: V Perle von Alschbachtal schH1
dam: V Frigga von Freibusch schH3
sire: VA1 Zamb von der Wienerau schH3
sire: Natz von Hirschel
dam: V Ica vom haus Reiterland schH3
G sire: Vornlante Winwood
sire: CH Bedwins Pirol
dam: Bedwins Dolly
dam: V Bedwins Fritzi schH1
Dam: Franziska Minty
sire: V, CH Exl von Batu schH3
sire: Vornlante Carlo of Greenveldt
dam: CH Catja of Vornlante
G dam: Talarek Sage
sire: V Dillan aus Klooster Bergen
dam: Vornlante Hatti
dam: Vornlante Dixie
The full seven generation pedigree link below shows a large number of VA1 and V1 dogs behind him with links to the known dwarf producers published many years ago. (see John Walkers notes)
Full 7 generation pedigree of Sire
Full 7 generation pedigree of Dam
Pedigree Research: where did it come from?
A number of people have attempted to find the origin of pituitary dwarfism with varying degrees of success and it was thought to have originated in two or three dogs: V2 Hein von Richterbach schH3, Casar von der Malmannsheide and/or Vello zd Sieben Faule. Behind these were the now known carriers VA1 Rolf vom Osnabruckerland and his sibling Rosel vom Osnabruckerland both now known to carriers, their sire and dam were VA2 Lex PreuBenblut schH3 SZ589285 born 1944 and VA2 Maja vom Osnabruckerland schH3 SZ610210 also born 1944, the question is when did the spontaneous mutation first occur? It is thought to have arisen around the end of the second world war, previous research below shows that even now no one has been able to go any further back. With no mention anywhere of pituitary dwarfism before Rolf and Rosel then it is difficult to say whether or not the story continues any further back. We have to make an assumption as Rolf and Rosel are known carriers could the mutation have occurred with their sire or dam Lex and Maja, it seems increasingly likely, but more checking needs to be done on this. The dwarf pedigrees I have in my possession can be tracked back to Rolf and Rosel but no further, the chart below shows previous research. The link to the Czechoslovakian Wolfhound also carrying PD from the GSD is investigated below to see if the lines can be determined by looking for common dogs. When I looked closely into this then some of the GSDs used do in fact share common ancestors linking the two sources together.
In my own opinion I think that it was either VA2 Lex PreuBenblut or VA2 Maja vom Osnabruckerland who were the originators of the spontaneous mutation which occurred in the breed, nothing in terms of pedigree research will allow me or my predecessors to go back beyond them. The reason is simply this, firstly that as a spontaneous mutation the chances of this occurring in more than one dog at the same time are astronomical. Every dwarf at present is always traceable through known and suspected carriers back to Rolf and Rosel and likewise I cannot go back further than indicated on this earlier research which does appear at this point to be correct and which was based on Andresen and Willeberg research, although they suggested in might have arisen in 1940 a generation before Lex and Maja but they give no details on this thought. There are no reports of dwarfism prior to this period and also it fits with the emergence of PD in the other breeds that were based on the GSD and as shown below they too always go back to the same two common carrier dogs Rolf or Rosel, that is of course if anybody knows any different............... we are probably never going to really know which of them it actually was Lex or Maja that is if my conclusions are correct, but both the German Shepherd and the Czechoslovakian wolfhound share the same common ancestors from the point where PD was seemingly introduced, and today both have the same carrier/affected rates.
Tracking the PD carriers that were used to found this breed is very much work in progress. In all around 48 GSD's were used over a period of time up until 1983 and while everything was known about the Carpathian wolves used some of the German shepherds were of variable quality and were not as well documented in terms of full details. Beginning with the GSD sire: Cezar z Brezoveho Haje, born 27.3.1951, the full history of the breed can be found on many web sites, here we are trying to concentrate on identifying the German Shepherd carriers of dwarfism used in the foundation of this breed and publish them here.
What we do know is the names of a number of the German Shepherd males used such as: V Condor vom Marderpfahl schH3 - DDR 42701 who is four generations removed from Rolf vom Osnabruckerland and therefore has to be consider at present a suspected carrier.
sire: Ex vom Rudstern - DDR 33052 - b. 3.10.1968
Condor vom Marderpfahl
dam: Gerda vom Lutschetal - DDR 23848 - b. 11.10.1968
V Greif von Felsenstein schH3 DDR 15248 another known GSD male used born 15.10 1961 and also tracks back to Rolf
3 generations back. Note that both dogs were DDR Sieger's.
sire: V Gundo vom Stolperland schH2 SZ954339 b. 10.1.1958
Greif von Felsenstein
dam: Fee von der Grunauer - Muhle schH1 DDR 7154 b. 14.2.1958
The next German Shepherd identified and used was V Condo Falkenwappen schH3 SZ10217 b. 8.9.1959 appears unconnected to any known carriers of the time and therefore is expected to have been clear of the faulty gene.
In 1983 the last wolf x GSD occurred, the German Shepherd used was: V Bojar von Schotterhof schH3 DDR 77948 what is interesting is where he came from as he is a descendant of Condor and Greif, was he a carrier? highly likely when you consider the lineage. Using three German Shepherds from the same lines would only serve to reinforce the defect within the breed, had they outcrossed to other lines this defect in all probability might never of arisen. As the pedigrees of other GSD's used become available more research will be done. The next stage to this investigation will be to check the Karelian Beardog another breed which was crossed significantly with the GSD post world war 2 to enhance the breed but also suffers from pituitary dwarfism.
Link to 7 Generation pedigree of Bojar vonSchotterhof
Czechoslovakian Wolfhound Database
Thank you to Mijke van Heyningen at the Wolfdog Organisation for his assistance and also to John Walker for his earlier pedigree research into dwarfism, which I have checked and used.