Feature Archive 1 - 1st quarter 2000

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                                                                                                                 </b></FONT><A HREF="mice.htm" TARGET="_top" TITLE="CARAWATHA MICE"><U><B>Main Mouse page</b></U></A><B>            </b><A HREF="index.htm" TARGET="_top" TITLE="Carawatha Rodents Homepage"><U><B>HOME</b></U></A><B>            </b><A HREF="rats.htm" TARGET="_top" TITLE="CARAWATHA RATS"><U><B>Main Rat page </b></U></A><B>           </b></div> <div> <B>                                                                                            </b><A HREF="archives_.htm" TARGET="_top" TITLE="Feature Page Archives"><U><B>Back to Feature Archives</b></U></A><B>    </b></div> <div>                         <FONT SIZE="1" COLOR="#330066" FACE="BenguiatGot Bk BT" >                                                                                  </FONT><FONT SIZE="2" COLOR="#FFFF00" FACE="BenguiatGot Bk BT" ><I><B>All material on this site is copyright  ©Y.Mackail/Carawatha Rodents</b></I></FONT></div> <div>  </div> <bR> <div> </div> </td> </tr><tr> <td valign="top" width=300 BGCOLOR="#CC9980" TEXT="#080000" background="013d2c01eoxqee.gif"> <div> <U>SCROLL DOWN TO SEE PHOTOS  AS YOU READ</U></div> <div> (pic A1.1)</div> <div> <IMG SRC="1bdd6020.jpg" border=0 width="214" height="258" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> STANDARD BLACK TIGERS</div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> (pic A1.2)</div> <div> <IMG SRC="1bbf2960.jpg" border=0 width="242" height="150" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div>  -Homozygous Avy mice -</div> <div>    SELF GOLD</div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> (pic A1.3)</div> <div> <IMG SRC="1b9d6410.jpg" border=0 width="214" height="321" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> SNOWTIGER & STANDARD TIGER</div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> (pic A1.4)</div> <div> <IMG SRC="1b0e70a0.jpg" border=0 width="231" height="266" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> DOVE TIGER </div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> (Pic A1.5)</div> <div> <IMG SRC="1b2d9280.jpg" border=0 width="217" height="296" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> CHOCOLATE SNOWTIGER</div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> (Pic A1.6)</div> <div> <IMG SRC="1b3ca710.jpg" border=0 width="202" height="369" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> BLACK REVERSE TIGER</div> <div> ~~~~~~~~~~~~~~~~~~~~</div> <div> (Pic A1.7)</div> <div> <IMG SRC="1aa0bbb0.jpg" border=0 width="267" height="187" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> (Pic A1.8)</div> <div> <IMG SRC="1b70a750.jpg" border=0 width="266" height="117" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> CHOCOLATE TIGER</div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> ~~~~~~~~~~~~~~~~~~~</div> <div> ~~~~~~</div> <bR> </td> <td valign="top" height=362 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <I>Feature Archive 1  - 1st quarter 2000   </I></div> <div> <I>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</I></div> <div> <I><B>TIGER MICE</b></I></div> <div> <I><B><IMG SRC="1abc54e0.jpg" border=0 width="453" height="334" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></b></I></div> <div> (<FONT SIZE="2" COLOR="#CC0000" FACE="Short Hand" >Photo Details Pic A1.0): </FONT></div> <div> <U>FrontLeft</U> <FONT SIZE="2" COLOR="#FF6633" FACE="Short Hand" >"Carawatha Shalwar"</FONT>- Dove tiger(Poor central demarcation) <U>Frontright</U> <FONT SIZE="2" COLOR="#FF6633" FACE="Short Hand" >"Carawatha Burma"</FONT>-Standard black tiger(Poor Facial markings)</div> <div> <U>Middle</U> <FONT SIZE="2" COLOR="#FF6633" FACE="Short Hand" >"Carawatha Samurai"</FONT>- Standard black tiger(too heavily barred)</div> <div> <U>2ndBack</U> <FONT SIZE="2" COLOR="#FF6633" FACE="Short Hand" >"Carawatha Saffron"</FONT> - Champagne tiger(Too few body stripes)</div> <div> <U>Back</U> <FONT SIZE="2" COLOR="#FF6633" FACE="Short Hand" >"Carawatha Shalimar"</FONT> - Standard black tiger(Good facial and central demarcation lines)</div> <DIV ALIGN="LEFT"></DIV> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <div> One of my favourite varieties of fancy mouse are the tiger varieties.  In fact some of my first mice back in 1994 were tigers.   Standard tiger mice have numerous lines, bars and areas of colour over a fawn coloured background.  While the most common or 'standard' tiger colour is black markings on the fawn <FONT SIZE="1" COLOR="#FF0000" FACE="BenguiatGot Bk BT" >(pic A1.1)</FONT><FONT SIZE="1" COLOR="#000000" FACE="BenguiatGot Bk BT" >, </FONT>they also come with markings in just about all the colours that self variety mice do, only on a fawn background.</div> <div>    </div> <div>     Tiger mice have gone through phases of popularity in the fancy.  They are not an easy type to breed to the standard with markings being very variable in each litter.   The variable nature of the gene causing our tiger mice is such that it can cause a mouse to be marked with such heavy barring as to border on shading, making the mouse look like a sable variety, right through to a clear yellow coloured mouse with no barring whatsoever looking as a self would.  </div> <bR> <div> In fact many of the self gold mice we see at shows are in fact homozygous tiger mice (Avy Avy in genotype)</div> <DIV ALIGN="LEFT"></DIV> <div> See pic A1.2</div> <bR> <div>   <FONT SIZE="3" COLOR="#000000" FACE="Short Hand" > </FONT>The gene is called 'dominant Viable yellow' and written A(vy).  This is the same gene that in the US is responsible for their mice they call Brindles.    </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <div>  </div> <div> Although here in Australia it is exclusively the Avy gene that causes our mice with brindled patterns,  overseas in the UK there is another gene causing brindled mice.  </div> <div> A sex-linked semidominant gene called brindled, written Mo(br).  The mice produced by this gene were the original mice to be called Brindles.   This mottling gene has associated lethalities that need to be taken into consideration, with homozygous males being those affected.  </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <div>    <FONT SIZE="4" COLOR="#000000" FACE="Short Hand" > </FONT></div> <div> I have personally bred Tiger patterned mice in many of the colours available.  Black, Chocolate, Blue, Dove and Champagne.   As well as starting up a line of Calico mice (albeit by accident) and a bit later on, the Snowtiger and Reverse Tiger varieties.  There is more about these two types further on.    Recently also, we have had some silver tiger mice in litters, a very striking looking mouse indeed.</div> <div>    In the Reverse tiger varieties I have bred Black, Chocolate and Dove.  </div> <div>    In the Snowtigers I have bred Stone, Chocolate and Beige  and a much darker colour that at the time I thought may have been Lilac, but I now think it was more likely the newer ce colour recently named Otter or Mocha.</div> <bR> <DIV ALIGN="LEFT"></DIV> <div>  <U>Following is a list of all of my Tiger mice right from the beginning.</U></div> <div> My 1st Tiger mouse, given to me by a friend.<FONT SIZE="4" COLOR="#6600CC" FACE="Short Hand" > "Tigah" </FONT>Black male (10/95)</div> <div> 2nd Tiger mouse, got from same friend.<FONT SIZE="3" COLOR="#993366" FACE="Short Hand" > </FONT><FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Tigress" </FONT>Black female (09/95)</div> <div> F1 Bred from above pair.<FONT SIZE="4" COLOR="#6600CC" FACE="Short Hand" > "Carawatha Tigerlilly" </FONT>Black female (01/96)</div> <div> F2 Bred from first pair<FONT SIZE="3" COLOR="#993366" FACE="Short Hand" >. </FONT><FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Euphrates"</FONT>Longhair Black male(05/96)</div> <bR> <div> Bred from "C.Euphrates" & Choc self "Kinder"  (08/05/97) . Kept two.  A heavily barred Black Female <FONT SIZE="4" COLOR="#6600CC" FACE="Short Hand" >"Carawatha Shirin"</FONT> &<FONT SIZE="4" COLOR="#6600CC" FACE="Short Hand" >"Carawatha Ramsees"</FONT> the first Calico that I kept.  (Had bred two other calico's in other matings prior to this)</div> <bR> <div> Bred from "C.Shirin" & mismarked Sable male."C.Chamois" (01/06/98).Stripey faced Black female <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Benghal" </FONT></div> <bR> <div> Bred from "C.Chamois" & marked stone female"C.Ariel"(06.06.98)My first Snowtiger, a female with Stone coloured markings. <FONT SIZE="4" COLOR="#6600CC" FACE="Short Hand" >"Carawatha Isis"</FONT></div> <bR> <div> Bred "C.Benghal" & marked fawn male. "C.Sunny".(25.10.98) My first Blue Tiger, a male <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Siberia"</FONT></div> <bR> <div> <FONT SIZE="2" COLOR="#6600CC" FACE="Short Hand" >Bred "C.Ramsees" & self stone "C.Libby"(26.10.98). Kept a pair of Black tigers </FONT>"Carawatha Samutra"<FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(Pic A1.3)</FONT>-<FONT SIZE="2" COLOR="#6600CC" FACE="Short Hand" >female  & </FONT>"Carawatha Indy" - <FONT SIZE="2" COLOR="#6600CC" FACE="Short Hand" >male.</FONT></div> <bR> <div> Bred "C.Isis" to "C.Sunny" (08.11.98) Got my second blue tiger. <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Frosty"</FONT></div> <bR> <div> Purchased an outcross Black Tiger male <U>"Lacock Nile"</U>(heavily barred) & bred him to "C.Samutra".(15.08.99) kept a well marked black tiger female <FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Shalimar"</FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(Pic A1.0 - top)</FONT></div> <bR> <div> Bred "Lacock Nile" to my albino female "C.Nivea" (07.09.99) Kept a pair from this litter, both black tigers. <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Burma" - </FONT>female &<FONT SIZE="4" COLOR="#993366" FACE="Short Hand" > "Carawatha Samurai"-</FONT>male<FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >.</FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(picsA1.0 & A1.1)</FONT></div> <bR> <div> Bred "L.Nile" to "C.Samutra"(18.10.99) My first Dove Tiger, a male <FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Shalwar"</FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(pic A1.4 & A1.0)</FONT></div> <bR> <div> Bred "C.Burma" to my albino male "C.Hahn"(04.11.99) kept a Longhaired Chocolate tiger female<FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" > </FONT><FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Yvenna"</FONT></div> <bR> <div> Purchased an outcross snowtiger female (chocolate) "<U>Lacock Callestra</U>" <FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(pic A1.5 also A1.3)</FONT>  & bred her to my albino boy "C.Hahn" (29.11.99) Kept a pair of chocolate snowtigers.  The male <FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Scarab"</FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" > </FONT>& the female<FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Riley Stoic"</FONT><FONT SIZE="2" COLOR="#6633CC" FACE="BenguiatGot Bk BT" >[now owned by Harrington's Mousery]</FONT><FONT SIZE="2" COLOR="#6633CC" FACE="BenguiatGot Bk BT" > </FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(Photo of both & mother at the bottom of this list Pic A1.9)</FONT></div> <bR> <div> <FONT SIZE="2" COLOR="#993366" FACE="Short Hand" >Bred "C.Burma" to "C.Scarab"(13.02.00) and kept a pair of black tigers. </FONT>"Carawatha India" & "Carawatha T'eilk"</div> <bR> <div> Purchased a black reverse tiger in a petstore "<U>Gaurana</U>"<FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(Pic A1.6)</FONT> and bred her with "C.Scarab"(15.02.00) Kept 3 from this litter.  </div> <div> An undermarked Black tiger female <FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Egypt", </FONT></div> <div> A chocolate tiger female<FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" > "Carawatha Clara" </FONT></div> <div> & a mismarked Calico male<FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" > "Carawatha Santiago"</FONT></div> <DIV ALIGN="LEFT"></DIV> <div> <U>(Scarab escaped and we found him in with "Gaurana" and their babies the result being that on 15.03.00 she had a second litter.)</U></div> <div> "Gaurana" & "C.Scarab" (15.03.00) My first born reverse tiger.  A male Dove reverse tiger.<FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Anubis Rostra"</FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(PicA1.7)</FONT> </div> <bR> <div> Bred "C.Clara"&"C.Santiago" (27.05.00) Kept a chocolate snowtiger male. <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Moses"</FONT></div> <bR> <div> Bred "C.Yvenna" to "C.Scarab" (07.06.00) Kept 2 females. A heavily barred Chocolate Tiger. <FONT SIZE="4" COLOR="#6633CC" FACE="Short Hand" >"Carawatha Telemn"</FONT> <FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(PicA1.8) </FONT><FONT SIZE="2" COLOR="#3333CC" FACE="Short Hand" >& a Longhaired Champagne tiger with sparse markings </FONT><FONT SIZE="4" COLOR="#3333CC" FACE="Short Hand" >"Carawatha Saffron"</FONT><FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(PicA1.0)</FONT></div> <bR> <div> Bred "Gaurana" & "C.Scarab" (13.06.00) kept a pair of black reverse tigers.  <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Ting"</FONT> - female & <FONT SIZE="4" COLOR="#993366" FACE="Short Hand" >"Carawatha Musashi" </FONT>- male</div> <DIV ALIGN="LEFT"></DIV> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <bR> <div>  <FONT SIZE="2" COLOR="#FF0000" FACE="Short Hand" >(Pic A1.9)</FONT></div> <div> <IMG SRC="1bebe2b0.jpg" border=0 width="446" height="299" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> <U>Left</U>-Carawatha Scarab / <U>Middle</U>-"Lacock Callestra" / <U>Right</U>-"Carawatha Riley Stoic"</div> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <bR> <div> <B> </b><FONT SIZE="6" COLOR="#9999CC" FACE="BenguiatGot Bk BT" ><B><U>SNOW TIGERS</U></b></FONT></div> <bR> <div> While I personally bred my first snowtiger in 1998, it's really only been since the year 2000, that they've been showing up more regularly, in shows & petstores.  </div> <div>    The name SNOW TIGER was chosen because of the much paler cream coloured background that occurs in this variety.  So far I have bred Snowtiger mice with chocolate, stone & beige markings.  There was also one of this variety born that looked as if the markings were of a lilac colour.  I now think that this was probably the more recently identified colour named Otter or Mocha.  </div> <bR> <div>    Snowtiger mice are the result of the regular tiger gene A(vy) being affected by the gene c (e).  This gene, while having been around for some time within the fancy, is only recently becoming more prevalent.  </div> <div>   This c (e) gene is called 'extreme dilution'.  It causes the melanin pigment granules to be smaller and fewer in number.  Thus a homozygous non-agouti mouse of this type (aa c<FONT SIZE="2" COLOR="#000000" FACE="Bimini" >e</FONT>c<FONT SIZE="2" COLOR="#000000" FACE="Bimini" >e)</FONT> has fur of a very light gray, and eyes are black.  This type are recognised by ANRA, in their <A HREF="stds.htm" TARGET="_top" TITLE="Breed Standards for Rats Mice"><U>official breed standards</U></A> as Stone.   </div> <bR> <div>   When the c<FONT SIZE="2" COLOR="#000000" FACE="Bimini" >e </FONT>gene is in effect, it produces one very distinctive trait.  Bold prominent black eyes.   A good test mating to see if this gene is indeed in your lines, is to breed it into a line of himalayan or siamese mice.  The result will be black eyed siamese & himalayans, which ordinarily does not occur.    So far there have been no Snowtigers bred with pink/red eyes, only black, which prompts the question as to whether they are even possible.</div> <bR> <div>   There are a number of alleles at the 'c' locus in our fancy mice.  Albino's (c), mice effected by the himalayan pattern (c<FONT SIZE="1" COLOR="#000000" FACE="Bimini" >h</FONT>),  mice affected by the chinchilla gene (c<FONT SIZE="1" COLOR="#000000" FACE="Bimini" >ch</FONT>).   </div> <div> Alleles at this locus (the albino locus) often have intermediate results when heterozygous to another c allele, thus giving rise to a lot of variation in phenotypic appearance of the mice effected.</div> <bR> <div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B><U>REVERSE TIGERS</U></b></div> <bR> <div> Reverse Tiger mice are the newest type of tiger to emerge in the fancy here in Australia, having been discovered only within the last 12 months.  </div> <div>   They resemble the normal tiger pattern but in reverse.  Thus the stripes/markings on the mouse are always fawn and the background colour is the changeable part.    Little is known about how or what causes this change around.  The colour inheritance appears to work the same way as with the standard mice, and the 'c<FONT SIZE="2" COLOR="#000000" FACE="Short Hand" >e'</FONT> gene does not appear to be involved.</div> <div>   There is no doubt that Reverse Tigers, especially in the paler colours, are probably one of most unusual and striking varieties to look at.   I look forward to introducing the many other colours into this variety.</div> <bR> <div>  <FONT SIZE="4" COLOR="#66CCFF" FACE="Short Hand" >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</FONT></div> <div> <FONT SIZE="3" COLOR="#000000" FACE="Short Hand" >   </FONT>There are a couple of other phenomenon I'd like to mention here, that occurs with great frequency.  That is the high incidence of offspring from the Snowtiger matings that could only best be described in appearance, as some type of Marten Sable mouse.  </div> <div>   There is great variation in the development of colour of these types, some start off a pale gold colour, only to have the yellow tone disappear a few months later, with the resulting mouse looking like a very pale almost diluted marten sable.  </div> <div>   Others start off white and gain pigmentation a few months later.  To end up with a nicely shaded saddle area, often darker than this  type that start off gold.  </div> <bR> <div>   There is also the totally confusing  occurrence of mice that look for all they're worth to be Gold Foxes.  These mice are a bright vibrant yellow/gold colour with snowy white underbellies and very well defined demarcation lines.</div> <div>   However the very nature of the genes causing Fox mice dictate this to be impossible.  The c<FONT SIZE="1" COLOR="#000000" FACE="BenguiatGot Bk BT" >ch</FONT> gene, which is responsible for our Fox mice, otherwise referred to as chinchillated tans, inhibits the expression of phaomelanin(yellow pigment) in the coat.  So if a mouse was indeed a gold fox genetically, it would manifest phenotypically as a mock albino, and simply look white.  </div> <div>   So in light of this and the fact that marking genetics has been all but ruled out in the lines we've testmated, the only conclusion we can come to at this time, is the issue I mentioned in an above chapter, about , intermediate heterozygous relationships between different c alleles.  </div> <bR> <div> POINT OF NOTE:  Regular marten sable and fox variety mice are sable and tan mice respectively, affected by the chinchilla gene, thus most of the yellow is bleached out of the coat.  This makes it impossible to have any type of gold colouring with this gene present.  (beige fox is different) </div> <bR> <div> Written by Yvette Hemberg.  </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="mailto:carawatha@hotmail.com" TARGET="_top" TITLE="mailto:carawatha@hotmail.com"><U>E-MAIL US</U></A></div> <div>  <FONT SIZE="4" COLOR="#66CCFF" 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