Why do scientists use multiple markers to identify individual elephants?
Why do scientists use multiple markers to identify individuals in gel electrophoresis? The more markers used, the smaller the likelihood that two individuals will have the same results. Variable among individuals, amplifiable across samples. Why are elephants a keystone species?
How many loci are used to identify individual elephants?
Why does the ivory sample contain only two bands while the other lanes have multiple bands?
It contains only two bands because they represent the DNA sequence whereas the other lanes represents a single population. If an ivory sample has two alleles that are also found in a population sample, does that tell you with certainty that the ivory sample came from that population?
How did scientists generate a population specific genetic map for elephants in Africa?
A Genetic Map from Dung DNA Overall, scientists have collected over 2,000 dung samples from 81 distinct populations (only 70 are shown in the map) across Africa to generate a population-specific reference map of genetic profiles.
Why are Tuskless elephants killed?
Gorongosa was the site of a brutal slaughter during Mozambique’s civil war, 1977-1992. The fighters killed most of the park’s resident elephants for ivory, using profits to buy goods including weapons and ammunition. Tuskless females would not have been targeted.
Why do female elephants not have tusks?
Q: Do all elephants have tusks? Unlike Asian elephants, in which only males have tusks, both male and female African elephants are tusked. However, due to the hunting pressure on tusked animals brought about by poaching for ivory, tusklessness is an increasingly common condition in African elephants.
Can an elephant survive without its tusks?
From tusked to tuskless Ordinarily, fewer than four per cent of female elephants are born without tusks. So animals that have tusks and therefore have the genes to grow tusks are removed from the population by poachers. Animals that don’t have tusks survive because they don’t appeal to the poachers,” Long explained.
Do elephants die when their tusks are removed?
Because those tusks have a lot of there natural calcium in them and when they cut them off the calcium that is left in the tusks dies then the elephant has no extra calcium and dies.
Can you cut elephant tusks without killing them?
The bottom third of each elephant tusk is embedded within the skull of the animal. This part is actually a pulpy cavity that contains nerves, tissue and blood vessels. However, it too is ivory. The only way a tusk can be removed without killing the animal is if the animal sheds the tooth on its own.
Can an elephant’s trunk grow back?
Elephants can use them to protect their trunks, dig for water, lift objects, strip bark from trees, gather food and defend themselves, according to “Poached: Inside the Dark World of Wildlife Trafficking” (Da Capo Press, 2018), by science journalist Rachel Nuwer. But once removed, these tusks don’t grow back.
Can an elephant kill a rhino?
Rhinos are quite commonly killed by elephants, particularly young bull elephants. It may have to do with competition for food.
Can anything kill a hippo?
33. What predators are there for a hippo? While many carnivores (even birds) can eat a hippo’s meat, very few can actually kill a hippo on their own. Since a single bite from a hippo can crush a lion as if it is nothing, lions can only hunt a hippo in a bigger group.
What animal can kill a elephant?
What animal can kill a grizzly bear?
Elephants, Hippos, and Rhinos can all easily take down a grizzly/polar bear 9/10. Adult male Lions and Tigers CAN take down a grizzly or polar bear. It won’t be a majority, but they have the tools to take them down. Many large bulls, Bison, etc all can take down a grizzly or polar bear.
Can a polar bear kill an elephant?
A bear is simply not big enough to win against an elephant. It could do some damage, but at best the bear could leave some cuts in the elephant and if it persists, it would just make the elephant made and tire itself out to the point where the angry elephant can run it down and turn into a paste.
Can a polar bear kill a hippo?
It’s hard to smack something underwater, so the polar bear would have to resort to its claws and teeth to damage the hippo. That is bad news, because the polar bear cannot dig deep enough to cause significant damage to the hippo. It could kill it from bleeding out, but it would take a LOOOOOOOOONG time.
Which animal can kill tiger?
Herbivores that are too big for a tiger to handle: Elephants, rhinos (although there are exceptions to that one) and hippos. Predators that can take on a big tiger in a head-on fight: Big, male brown bears, polar bears and large c.
Can a tiger kill a gorilla?
Though a gorilla is more powerful in bite force and strength a tiger would win 9 times out of 10. A tigers jump would easily reach a gorillas neck. After that a tiger breaks the gorilla’s neck and kills the gorilla.