The (Peruvian) Paso dilution
This page was created before the pearl
gene was named or isolated in a laboratory.
Many thanks to:
Deb Morgan, of Hamilton, Ohio
... our source of information on the Paso version of this strange dilution
gene, which behaves like a recessive gene, but seems to also be activated by the cream
gene.
It appears to be a phenomenon that functions similarly to the one in the
Andalusians, i.e. :
-
one copy of the gene in question does not seem to change a horse's
color.
-
one copy plus a cream gene seems to act as a double dilution
newdilutions list members: To read
all of the information available to this
group at any time, be sure to go to the Yahoogroups list site and read the
archives from the beginning!
Examples of Peruvian Pasos that probably carry the pearl dilution, and why,
courtesy of Deb Morgan. Each set of two charts
represents one foal, the sire's ancestors on the first chart, and the dam's on the
second, of each set.
This pedigree is of Cultured Pearl, a *possible* pearl, possibly a
double-cream, Paso Fino-Spanish Jennet-Tiger Horse cross filly, owned by Beverly
Whittington of Georgia:
from 8/25/2004, Deb states:
"Thus far, in the PP breed, each pseudo double dilute has had
one
parent who was a cream (smoky, buckskin, or palomino). Of the
ones, which I have data on, only one has a double dilute parent.
The second half (2nd parent) are all non dilutes.
Would be interesting to find one that has two non-dilute parents,
since it would add a fascinating twist but... haven't located one yet."
(Deb did send info on one like this, later)
"Thought we may have had one with the 2004 colt... Chestnut
sire
X what is registered as a Bay mare. However, in looking at the
dam, there are certain undertones, etc. so... I looked into her
lineage, etc. Lineage points to the her being a heavily smutted
Buckskin or a Smoky. Unless she is color tested, or has a regular
dilute foal when, crossed with a non-dilute (has only had two
foals... this current one and one other which was non-dilute), one
cannot say, with 100% certainty, that she is a Smoky or Buckskin.
However... in looking at her coloring, & her lineage, I would not
hesitate, for a second, to lay a bet on it." |
Deb Morgan writes: (Older entries to this page)
"?" Dilute colt was born
this year? Photos include
sire & dam. Well, this 2004 "?" Dilute colt is by a Chestnut
sire and out of a heavily smutted Buckskin, or Smoky Black, dam (Dam is
registered as a Bay but... she's not a Bay).
The chestnut sire is a full brother to the "?" Dilute
filly/mare that was color tested (and found to only carry one cream gene
but looks just like a Cremello...The one that I sent you photos of).
Anyway, Sire's owner states that there is no unusual pigmentation to his
skin. I do not believe the dam has any either.
|
 (Deb
Morgan writes:) "As a just in case, and/or to help you remember<g>, I am
resending the collage of this colt (colt #1). Only, this time, it includes
his dam's photo as well (dam was missing from the first one I sent you)."
(So, I didn't put the first one on the web site -- Barb)
(another email from her:) "Remember the
Peruvian Paso colt (in photos I sent to you... the one with the Brown
<actually Smoky> sire)? Well, am attaching photos of his Chestnut dam. Two
of the photos are not the greatest.
It appears that the colt's eyes are in the changing phase right now.
Going from blue to hazel (which will, afterwards, go from hazel to
amber... which seems to happen in each case).
The gal, who owns the colt & dam, is going to be giving me even further
info and more updated photos of the colt... probably more of dam as well."
(Deb Morgan's text from a later email, apparently about this same
picture collage:)
"Yes, I agree, this mare (dam of colt) is a normal Chestnut (her dam was
a Chestnut and sire Bay).
This is the dam of the Cremello looking colt born in March of 2003
which is still a
pseudo Cremello whose eyes are, just now, turning from blue to hazel (eyes
will end up amber if it follows with the rest of these "?" dilutes). I
should be getting more recent photos of this colt (he was tested as only
carrying one cream gene... which he, of course, got from his Smoky sire)."
|
Photos of PP dilute gelding from Deb Morgan -- one eye shot may not be his
-- Barb
|
Deb writes: "The chestnut sire is a full brother to the dilute
filly/mare that was color tested (and found to only carry one cream gene
but looks just like a cremello ... the one that I sent you photos of).
Anyway, sire's owner states that there is no unusual pigmentation to his
skin. I do not believe the dam has any, either."
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