Apparently, some male insect-eating marsupials, such as the
mouse-like antechinus and the
possum-like phascogales, have killer
sex. In fact, the very act of mating with their own kind literally kills them.
According to a research published by the Proceedings of the National Academy
of Sciences
of the United States of America (PNAS) on Oct. 7, 2013, the
animals mate in a frenzied manner to guarantee that their sperms are successful
because they only have once a year to do so, due to the limited window of
mating opportunity provided by their female counterparts. This results in death
for most, if not all of the unfortunate animals.
of the United States of America (PNAS) on Oct. 7, 2013, the
animals mate in a frenzied manner to guarantee that their sperms are successful
because they only have once a year to do so, due to the limited window of
mating opportunity provided by their female counterparts. This results in death
for most, if not all of the unfortunate animals.
"There's always a cost to reproducing - it's an energy
expensive thing that animals do," said mammal ecologist and University of
Queensland lead researcher Diana Fisher.
Queensland lead researcher Diana Fisher.
"But in this case they haven't spread out their effort
over time, they do it all at once in a really short time. And they just die
afterward."
"They have a nice temperament, they are very
inquisitive little animals. They are quite interactive.
It's a bit sad. But they don't know it's coming I suppose, it's just something
that happens to them," she said.
.
It's a bit sad. But they don't know it's coming I suppose, it's just something
that happens to them," she said.
The animals' high testosterone levels reportedly trigger a
cascade effect of stress hormones, causing their immune systems to collapse and
their body tissues to break down. Plus, they have lots of partners, which add up
to the chaos.
to the chaos.
The antechinus have notoriously long mating sessions, which
last up to 12 or 14 hours. It shouldn't come as a surprise because they are one
of the only semelparous mammals in the world, which means sex is a
once-in-a-lifetime thing for them.
Before, scientists thought that the marsupials died because
of fighting with each other, or to provide food for their offspring.
The study included researchers from the University of
Tasmania and the University of Sydney.
They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of
the marsupials self-destructed after sex.
.
They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of
the marsupials self-destructed after sex.
"We demonstrate that short mating seasons intensified
reproductive competition between males, increasing male energy investment in
copulations and reducing male post-mating survival," the paper said.
CREDIT: Wikimedia Commons/Interllectual
According to a research published by the Proceedings of the National Academy of Sciences
of the United States of America (PNAS)
on Oct. 7, 2013, the animals mate in a frenzied manner to guarantee
that their sperms are successful because they only have once a year to
do so, due to the limited window of mating opportunity provided by their
female counterparts. This results in death for most, if not all of the
unfortunate animals.
"There's always a cost to reproducing - it's an energy expensive thing that animals do," said mammal ecologist and University of Queensland lead researcher Diana Fisher.
of the United States of America (PNAS)
on Oct. 7, 2013, the animals mate in a frenzied manner to guarantee
that their sperms are successful because they only have once a year to
do so, due to the limited window of mating opportunity provided by their
female counterparts. This results in death for most, if not all of the
unfortunate animals."There's always a cost to reproducing - it's an energy expensive thing that animals do," said mammal ecologist and University of
Queensland lead researcher Diana Fisher.
"But in this case they haven't spread out their effort over time,
they do it all at once in a really short time. And they just die
afterward."
"They have a nice temperament, they are very inquisitive little animals. They are quite interactive. It's a bit sad. But they don't know it's coming I suppose, it's just something that happens to them," she said.
The animals' high testosterone levels reportedly trigger a cascade effect of stress hormones, causing their immune systems to collapse and their body tissues to break down. Plus, they have lots of partners, which add up to the chaos.
The antechinus have notoriously long mating sessions, which last up to 12 or 14 hours. It shouldn't come as a surprise because they are one of the only semelparous mammals in the world, which means sex is a once-in-a-lifetime thing for them.
Before, scientists thought that the marsupials died because of fighting with each other, or to provide food for their offspring.
The study included researchers from the University of Tasmania and the University of Sydney. They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of the marsupials self-destructed after sex.
"We demonstrate that short mating seasons intensified reproductive competition between males, increasing male energy investment in copulations and reducing male post-mating survival," the paper said.
"They have a nice temperament, they are very inquisitive little animals. They are quite interactive
. It's a bit sad. But they don't know it's coming I suppose, it's just something that happens to them," she said.The animals' high testosterone levels reportedly trigger a cascade effect of stress hormones, causing their immune systems to collapse and their body tissues to break down. Plus, they have lots of partners, which add up
to the chaos.The antechinus have notoriously long mating sessions, which last up to 12 or 14 hours. It shouldn't come as a surprise because they are one of the only semelparous mammals in the world, which means sex is a once-in-a-lifetime thing for them.
Before, scientists thought that the marsupials died because of fighting with each other, or to provide food for their offspring.
The study included researchers from the University of Tasmania and the University of Sydney
. They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of the marsupials self-destructed after sex."We demonstrate that short mating seasons intensified reproductive competition between males, increasing male energy investment in copulations and reducing male post-mating survival," the paper said.
Dying
After Mating: Why it Happens to Some
Apparently, some male insect-eating marsupials, such as the
mouse-like antechinus and the
possum-like phascogales, have killer
sex. In fact, the very act of mating with their own kind literally kills them.
According to a research published by the Proceedings of the National Academy
of Sciences
of the United States of America (PNAS) on Oct. 7, 2013, the
animals mate in a frenzied manner to guarantee that their sperms are successful
because they only have once a year to do so, due to the limited window of
mating opportunity provided by their female counterparts. This results in death
for most, if not all of the unfortunate animals.
of the United States of America (PNAS) on Oct. 7, 2013, the
animals mate in a frenzied manner to guarantee that their sperms are successful
because they only have once a year to do so, due to the limited window of
mating opportunity provided by their female counterparts. This results in death
for most, if not all of the unfortunate animals.
"There's always a cost to reproducing - it's an energy
expensive thing that animals do," said mammal ecologist and University of
Queensland lead researcher Diana Fisher.
Queensland lead researcher Diana Fisher.
"But in this case they haven't spread out their effort
over time, they do it all at once in a really short time. And they just die
afterward."
"They have a nice temperament, they are very
inquisitive little animals. They are quite interactive.
It's a bit sad. But they don't know it's coming I suppose, it's just something
that happens to them," she said.
.
It's a bit sad. But they don't know it's coming I suppose, it's just something
that happens to them," she said.
The animals' high testosterone levels reportedly trigger a
cascade effect of stress hormones, causing their immune systems to collapse and
their body tissues to break down. Plus, they have lots of partners, which add up
to the chaos.
to the chaos.
The antechinus have notoriously long mating sessions, which
last up to 12 or 14 hours. It shouldn't come as a surprise because they are one
of the only semelparous mammals in the world, which means sex is a
once-in-a-lifetime thing for them.
Before, scientists thought that the marsupials died because
of fighting with each other, or to provide food for their offspring.
The study included researchers from the University of
Tasmania and the University of Sydney.
They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of
the marsupials self-destructed after sex.
.
They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of
the marsupials self-destructed after sex.
"We demonstrate that short mating seasons intensified
reproductive competition between males, increasing male energy investment in
copulations and reducing male post-mating survival," the paper said.
CREDIT: Wikimedia Commons/Interllectual
According to a research published by the Proceedings of the National Academy of Sciences of the United States of America (PNAS)
on Oct. 7, 2013, the animals mate in a frenzied manner to guarantee
that their sperms are successful because they only have once a year to
do so, due to the limited window of mating opportunity provided by their
female counterparts. This results in death for most, if not all of the
unfortunate animals.
"There's always a cost to reproducing - it's an energy expensive thing that animals do," said mammal ecologist and University of Queensland lead researcher Diana Fisher.
of the United States of America (PNAS)
on Oct. 7, 2013, the animals mate in a frenzied manner to guarantee
that their sperms are successful because they only have once a year to
do so, due to the limited window of mating opportunity provided by their
female counterparts. This results in death for most, if not all of the
unfortunate animals."There's always a cost to reproducing - it's an energy expensive thing that animals do," said mammal ecologist and University of
Queensland lead researcher Diana Fisher.
"But in this case they haven't spread out their effort over time,
they do it all at once in a really short time. And they just die
afterward."
"They have a nice temperament, they are very inquisitive little animals. They are quite interactive. It's a bit sad. But they don't know it's coming I suppose, it's just something that happens to them," she said.
The animals' high testosterone levels reportedly trigger a cascade effect of stress hormones, causing their immune systems to collapse and their body tissues to break down. Plus, they have lots of partners, which add up to the chaos.
The antechinus have notoriously long mating sessions, which last up to 12 or 14 hours. It shouldn't come as a surprise because they are one of the only semelparous mammals in the world, which means sex is a once-in-a-lifetime thing for them.
Before, scientists thought that the marsupials died because of fighting with each other, or to provide food for their offspring.
The study included researchers from the University of Tasmania and the University of Sydney. They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of the marsupials self-destructed after sex.
"We demonstrate that short mating seasons intensified reproductive competition between males, increasing male energy investment in copulations and reducing male post-mating survival," the paper said.
- See more at:
http://au.ibtimes.com/articles/512198/20131008/mating-animals-marsupials-insect-eating-male-mouse.htm#.UlPRPXkg6M9"They have a nice temperament, they are very inquisitive little animals. They are quite interactive
. It's a bit sad. But they don't know it's coming I suppose, it's just something that happens to them," she said.The animals' high testosterone levels reportedly trigger a cascade effect of stress hormones, causing their immune systems to collapse and their body tissues to break down. Plus, they have lots of partners, which add up
to the chaos.The antechinus have notoriously long mating sessions, which last up to 12 or 14 hours. It shouldn't come as a surprise because they are one of the only semelparous mammals in the world, which means sex is a once-in-a-lifetime thing for them.
Before, scientists thought that the marsupials died because of fighting with each other, or to provide food for their offspring.
The study included researchers from the University of Tasmania and the University of Sydney
. They compared 52 species of marsupials in Papua New Guinea, South America, and Australia. Their findings show that not all of the marsupials self-destructed after sex."We demonstrate that short mating seasons intensified reproductive competition between males, increasing male energy investment in copulations and reducing male post-mating survival," the paper said.
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