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Science Forum Index » Archaeology Forum » Phylogeography and Origin of Indian Domestic Goats
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Message |
| Philip Deitiker |
 Posted: Wed Dec 10, 2003 10:02 am |
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Guest
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Phylogeography and Origin of Indian Domestic Goats
MBE- Advance online
Abstract
The Indian subcontinent contains 20 well-characterized goat
breeds, which vary in their genetic potential for the
production of milk, meat and fibre, disease resistance, heat
tolerance and fecundity. Indian goats make up 20% of the
world population, but there has been no extensive study of
these economically important animals. Therefore we have
undertaken the present investigation of 363 goats belonging
to 10 different breeds from different geographic regions of
India using mtDNA sequence data from the HVRI region. We
find evidence for population structure and novel lineages in
Indian goats, and cannot reconcile the genetic diversity
found within the major lineage with domestication starting
10,000 years ago from a single mtDNA ancestor. Thus, we
propose a more complex origin for domestic goats. |
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| Day Brown |
| Posted: Thu Dec 11, 2003 3:50 am |
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Philip Deitiker wrote:
Quote:
Phylogeography and Origin of Indian Domestic Goats
MBE- Advance online
Abstract
The Indian subcontinent contains 20 well-characterized goat
breeds, which vary in their genetic potential for the
production of milk, meat and fibre, disease resistance, heat
tolerance and fecundity. Indian goats make up 20% of the
world population, but there has been no extensive study of
these economically important animals. Therefore we have
undertaken the present investigation of 363 goats belonging
to 10 different breeds from different geographic regions of
India using mtDNA sequence data from the HVRI region. We
find evidence for population structure and novel lineages in
Indian goats, and cannot reconcile the genetic diversity
found within the major lineage with domestication starting
10,000 years ago from a single mtDNA ancestor. Thus, we
propose a more complex origin for domestic goats.
I aint all that surprised; a young billy will try to fuck almost
anything.
I have pondered the use of the word 'caproid' referring to bones found
in
the Chalcolithic digs of Slavic Europe, as if they cannot tell whether
the
animal in question was either a sheep or a goat. In general, the
caproids are exceptionally adaptable, notoriously eating almost
anything. It would have made them an easy breed to move from one
ecosystem to another.
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| Philip Deitiker |
| Posted: Thu Dec 11, 2003 11:08 am |
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On Thu, 11 Dec 2003 00:50:09 -0800, Day Brown
<daybrown@hypertech.net> did some sarious thank'n and
scribbled:
Quote: The Indian subcontinent contains 20 well-characterized goat
breeds, which vary in their genetic potential for the
production of milk, meat and fibre, disease resistance, heat
tolerance and fecundity. Indian goats make up 20% of the
world population, but there has been no extensive study of
these economically important animals. Therefore we have
undertaken the present investigation of 363 goats belonging
to 10 different breeds from different geographic regions of
India using mtDNA sequence data from the HVRI region. We
find evidence for population structure and novel lineages in
Indian goats, and cannot reconcile the genetic diversity
found within the major lineage with domestication starting
10,000 years ago from a single mtDNA ancestor. Thus, we
propose a more complex origin for domestic goats.
I aint all that surprised; a young billy will try to fuck almost
anything.
I have pondered the use of the word 'caproid' referring to bones found
in the Chalcolithic digs of Slavic Europe, as if they cannot tell whether
the animal in question was either a sheep or a goat. In general, the
caproids are exceptionally adaptable, notoriously eating almost
anything. It would have made them an easy breed to move from one
ecosystem to another.
I think this may go along the same lines as the other
studies of new world domestications. In the west it figures
often that a domestication event has a single MRCA that can
be defined to a given event. In asia there appear to have
been at least 2 different domestications of rice, in Japan
while the lentile legume may have been introduced >10 kya,
it appears the focus of domestication in Japan was on
regional azuki legume, and the same pattern of legume
domestication is seen in the new world, with many
parallel or discontinuous domestication events of
essentially the same seed.
Thus it appears the focus of pre-wet rice asia was on the
domestication of items best suited for different areas, and
may explain why the domestication of goats in india does
not have an associated recent MRCA event.
The payoff for this strategy is diversity as in the
diversity of agriculture based products in pre-columbian
Mexico. |
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