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Predatory Behavior in Suids; originally posted by Hyaenidae
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Topic Started: Jan 9 2012, 06:55 PM (4,340 Views)
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Ceratodromeus
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Jan 28 2017, 10:02 AM
Post #16
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WILD PIGS AS PREDATORS IN OAK WOODLANDS OF CALIFORNIA Abstract "Wild pigs (Sus scrofa) are considered opportunistic omnivores that consume primarily plant matter; vertebrates are thought to constitute only a minor component of their diets, primarily as carrion, but active predation on vertebrates has been suspected. We examined the stomach contents of 104 wild pigs collected during a 7-year period in oak woodlands of the Diablo Range, California, and found that 40.4% contained vertebrate prey comprising 20 species, including 11 mammals, and totaling 167 individuals. Most stomachs with vertebrate prey included multiple individuals (18) of .1 species (6). Predation occurred in both male and female pigs and was most frequent during summer and fall, probably in response to protein deficiency in the diet. Wild pigs are a conservation concern because of their rooting behavior and consumption of mast; our results extend their potential impact to include predation on vertebrates, especially small mammals."

"Of those stomachs containing vertebrate prey, most (61%, n ¼ 44) included multiple prey individuals (range ¼ 2–18), and in almost all stomachs with multiple prey individuals (85%, n ¼ 27), .1 prey species was represented (range ¼ 2–6). One male wild pig, which was radiotracked as part of a concurrent study (Wilcox et al. 2004), foraged in oak woodland, grassland, and riparian habitats for 11 h before being shot at dawn. Its stomach contained 7 voles, 2 gophers, 1 dusky-footed woodrat (Neotoma fuscipes), 1 deer mouse (Peromyscus maniculatus), 1 pin˜on mouse (Peromyscus truei), and 1 western harvest mouse (Reithrodontomys megalotis). The stomach of a female wild pig held 13 voles, 4 gophers, and 1 broad-footed mole (Scapanus latimanus). Consumption of vertebrate prey did not appear to be randomly distributed among wild pigs. On 7 occasions we shot multiple wild pigs (range ¼ 2–6) concurrently from the same group, and in all but 1 of these events all pigs killed had vertebrate prey in their stomachs. In 1 case, the stomachs of 6 pigs collected from a group of 11 contained a combined total of 66 individual vertebrate prey, of which 49 were voles (MVZ-218999–219004)." Link to study Warthog predation on banded mongoose "In only 17 of the 33 deaths with known cause did the individual look ill or weak before disappearance. The other 16 individuals were seen killed or being eaten. Of these, 10 were pups, of which 8 were killed by marabou storks (Leptoptilos crumeniferus), 1 was killed by a monitor lizard (Varanus niloticus), and 1 was killed by a warthog (Phacochoerus africanus). We also observed 1 adult mongoose killed and eaten by a warthog," https://academic.oup.com/jmammal/article/85/3/491/901067/The-Effects-of-Refuse-Feeding-on-Body-Condition?searchresult=1
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Ceratodromeus
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Feb 17 2017, 12:14 PM
Post #17
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Interesting...
 "Deer hunters are facing competition from a source that is mean, relentless and out of control.
The explosion of feral hogs across the U.S. is threatening the deer population -- spreading disease, dominating the food chain and even, on occasion, killing and eating fawns. In Louisiana, where there are an estimated 700,000 wild hogs, hunters and wildlife officials say they are taking a toll on the whitetail deer herd.
"They are in the marshes and beaches of Louisiana all the way up into the hills and piney woods and swamps," Jim LaCour, state wildlife veterinarian for the Louisiana Department of Wildlife and Fisheries, told FoxNews.com. "They’re in every habitat in the state."
They’re very adaptable and also highly destructive," LaCour said.
LaCour described the feral pigs, which can weigh up to 500 pounds, as "opportunistic" eaters -- omnivores that feast on anything crossing their path, including deer fawn, other piglets and dead animals.
LaCour said hogs carry many diseases, such as leptospirosis, which can infect or kill other animals, like deer, as well as humans.
"Hogs are the sport utility vehicle for disease and parasites -- they move them across the landscape," he said. "That bacteria [leptospirosis] can cause abortion in the deer – and it can kill adult deer or people."
Their presence is also detrimental to the land, forcing wildlife officials to carry out aerial gunning in certain areas "because they tear up the marsh and that leads to coastal erosion."
Hogs were first introduced to North America by Spanish settlers. The breed most commonly seen in Texas is a mixture of those hogs and Russian boars brought over more recently for sport hunting, according to the Texas Parks and Wildlife Department.
Some speculate the population boom is due to relatively recent cross-breeding in the wild. Others, like LaCour, say the popularity of hog hunting in the 1980's and early '90's led humans to move the feral pigs from confined, geographically isolated areas into places they had never been before.
Wild hogs can reproduce by the time they are 6 months old. Feral sows can have two litters per year averaging six piglets per litter, according to wildlife experts. Statisticians have determined that 75 percent of the population must be harvested to maintain a static population -- prompting Louisiana and other states to adopt liberal hunting policies when it comes to killing the hogs. Texas has the highest rate of feral hogs to date, according to environmentalists.
For deer hunter Justin Lanclos, the very sighting of a feral pig means trouble.
"If you start to see hogs in your hunting area, you are absolutely not going to see deer," said Lanclos, a 33-year-old bowhunter from Sulthur, La.
"Deer are extremely smart and elusive," Lanclos told FoxNews.com. "They just don’t like to occupy the same area as hogs."
Lanclos, the owner of retailer Louisiana Bowhunter, said he recently received a photo showing a herd of hogs -- or sounder -- running off with a whitetail fawn. The image, believed to have been taken in Louisiana, has since gone viral on social media.
"We’ve got other photos of feral hogs carrying fawns," noted LaCour. "If the hogs are coming through a field and they happen to come across it, they’re going to eat it." http://www.foxnews.com/us/2016/03/31/deer-hunters-face-unwanted-competition-as-feral-hog-explosion-thins-herds.html
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Nergigante
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Feb 17 2017, 03:05 PM
Post #18
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Damn feral pigs reproduce really fast, is there any information of feral pigs being predated by other carnivores?
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Ceratodromeus
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Feb 17 2017, 03:10 PM
Post #19
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In the united states alligators, cougar, and bear have been recorded as predators of these pigs, but none of any impact on their population(s) as far as i am aware
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Mesopredator
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Feb 17 2017, 06:24 PM
Post #20
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- Ceratodromeus
- Feb 17 2017, 12:14 PM
Interesting...  "Deer hunters are facing competition from a source that is mean, relentless and out of control. The explosion of feral hogs across the U.S. is threatening the deer population -- spreading disease, dominating the food chain and even, on occasion, killing and eating fawns. In Louisiana, where there are an estimated 700,000 wild hogs, hunters and wildlife officials say they are taking a toll on the whitetail deer herd. "They are in the marshes and beaches of Louisiana all the way up into the hills and piney woods and swamps," Jim LaCour, state wildlife veterinarian for the Louisiana Department of Wildlife and Fisheries, told FoxNews.com. "They’re in every habitat in the state." They’re very adaptable and also highly destructive," LaCour said. LaCour described the feral pigs, which can weigh up to 500 pounds, as "opportunistic" eaters -- omnivores that feast on anything crossing their path, including deer fawn, other piglets and dead animals. LaCour said hogs carry many diseases, such as leptospirosis, which can infect or kill other animals, like deer, as well as humans. "Hogs are the sport utility vehicle for disease and parasites -- they move them across the landscape," he said. "That bacteria [leptospirosis] can cause abortion in the deer – and it can kill adult deer or people." Their presence is also detrimental to the land, forcing wildlife officials to carry out aerial gunning in certain areas "because they tear up the marsh and that leads to coastal erosion." Hogs were first introduced to North America by Spanish settlers. The breed most commonly seen in Texas is a mixture of those hogs and Russian boars brought over more recently for sport hunting, according to the Texas Parks and Wildlife Department. Some speculate the population boom is due to relatively recent cross-breeding in the wild. Others, like LaCour, say the popularity of hog hunting in the 1980's and early '90's led humans to move the feral pigs from confined, geographically isolated areas into places they had never been before. Wild hogs can reproduce by the time they are 6 months old. Feral sows can have two litters per year averaging six piglets per litter, according to wildlife experts. Statisticians have determined that 75 percent of the population must be harvested to maintain a static population -- prompting Louisiana and other states to adopt liberal hunting policies when it comes to killing the hogs. Texas has the highest rate of feral hogs to date, according to environmentalists. For deer hunter Justin Lanclos, the very sighting of a feral pig means trouble. "If you start to see hogs in your hunting area, you are absolutely not going to see deer," said Lanclos, a 33-year-old bowhunter from Sulthur, La. "Deer are extremely smart and elusive," Lanclos told FoxNews.com. "They just don’t like to occupy the same area as hogs." Lanclos, the owner of retailer Louisiana Bowhunter, said he recently received a photo showing a herd of hogs -- or sounder -- running off with a whitetail fawn. The image, believed to have been taken in Louisiana, has since gone viral on social media. "We’ve got other photos of feral hogs carrying fawns," noted LaCour. "If the hogs are coming through a field and they happen to come across it, they’re going to eat it." http://www.foxnews.com/us/2016/03/31/deer-hunters-face-unwanted-competition-as-feral-hog-explosion-thins-herds.html Oversensationalized.
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mean, relentless and out of control
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many diseases
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omnivores that feast on anything crossing their path
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dominating the food chain I've seen this sort of news in my country as well. There was this hysteria about raccoons spreading diseases that kill people, but it turned out that it was extremely rare.
Hogs eating fawns is not something that is surprising at all to Europeans.
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Wyvax
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Feb 17 2017, 06:45 PM
Post #21
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- Mesopredator
- Feb 17 2017, 06:24 PM
- Ceratodromeus
- Feb 17 2017, 12:14 PM
Interesting...  "Deer hunters are facing competition from a source that is mean, relentless and out of control. The explosion of feral hogs across the U.S. is threatening the deer population -- spreading disease, dominating the food chain and even, on occasion, killing and eating fawns. In Louisiana, where there are an estimated 700,000 wild hogs, hunters and wildlife officials say they are taking a toll on the whitetail deer herd. "They are in the marshes and beaches of Louisiana all the way up into the hills and piney woods and swamps," Jim LaCour, state wildlife veterinarian for the Louisiana Department of Wildlife and Fisheries, told FoxNews.com. "They’re in every habitat in the state." They’re very adaptable and also highly destructive," LaCour said. LaCour described the feral pigs, which can weigh up to 500 pounds, as "opportunistic" eaters -- omnivores that feast on anything crossing their path, including deer fawn, other piglets and dead animals. LaCour said hogs carry many diseases, such as leptospirosis, which can infect or kill other animals, like deer, as well as humans. "Hogs are the sport utility vehicle for disease and parasites -- they move them across the landscape," he said. "That bacteria [leptospirosis] can cause abortion in the deer – and it can kill adult deer or people." Their presence is also detrimental to the land, forcing wildlife officials to carry out aerial gunning in certain areas "because they tear up the marsh and that leads to coastal erosion." Hogs were first introduced to North America by Spanish settlers. The breed most commonly seen in Texas is a mixture of those hogs and Russian boars brought over more recently for sport hunting, according to the Texas Parks and Wildlife Department. Some speculate the population boom is due to relatively recent cross-breeding in the wild. Others, like LaCour, say the popularity of hog hunting in the 1980's and early '90's led humans to move the feral pigs from confined, geographically isolated areas into places they had never been before. Wild hogs can reproduce by the time they are 6 months old. Feral sows can have two litters per year averaging six piglets per litter, according to wildlife experts. Statisticians have determined that 75 percent of the population must be harvested to maintain a static population -- prompting Louisiana and other states to adopt liberal hunting policies when it comes to killing the hogs. Texas has the highest rate of feral hogs to date, according to environmentalists. For deer hunter Justin Lanclos, the very sighting of a feral pig means trouble. "If you start to see hogs in your hunting area, you are absolutely not going to see deer," said Lanclos, a 33-year-old bowhunter from Sulthur, La. "Deer are extremely smart and elusive," Lanclos told FoxNews.com. "They just don’t like to occupy the same area as hogs." Lanclos, the owner of retailer Louisiana Bowhunter, said he recently received a photo showing a herd of hogs -- or sounder -- running off with a whitetail fawn. The image, believed to have been taken in Louisiana, has since gone viral on social media. "We’ve got other photos of feral hogs carrying fawns," noted LaCour. "If the hogs are coming through a field and they happen to come across it, they’re going to eat it." http://www.foxnews.com/us/2016/03/31/deer-hunters-face-unwanted-competition-as-feral-hog-explosion-thins-herds.html
Oversensationalized. - Quote:
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mean, relentless and out of control
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many diseases
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omnivores that feast on anything crossing their path
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dominating the food chain
I've seen this sort of news in my country as well. There was this hysteria about raccoons spreading diseases that kill people, but it turned out that it was extremely rare. Hogs eating fawns is not something that is surprising at all to Europeans. Except suids aren't native to any of many ecosystems on the North American continent, and never have been, and with the exception of peccaries (who are less offensive and far more localized to their respective ranges) there isn't any equivalent animal for the very opportunistic niche they've established for themselves, and the rest of the ecosystem doesn't know how to handle it. Think about it this way: they have the adaptability of foxes, the diet of a bear, can fill the ecological niches of deer, vultures and coyotes and can eat or bully the competition, and relative to their size they breed like rodents. They are far more than a mere mesopredator, they are a threat to the balance of each North American ecosystem they establish themselves in. I'm not a hunter but I'd jump to the opportunity to go camping for a week with the main attraction of bagging as much hogflesh each day. They're just as bad as bullfrogs.
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Ceratodromeus
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Feb 18 2017, 01:30 AM
Post #22
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- Mesopredator
- Feb 17 2017, 06:24 PM
- Ceratodromeus
- Feb 17 2017, 12:14 PM
Interesting...  "Deer hunters are facing competition from a source that is mean, relentless and out of control. The explosion of feral hogs across the U.S. is threatening the deer population -- spreading disease, dominating the food chain and even, on occasion, killing and eating fawns. In Louisiana, where there are an estimated 700,000 wild hogs, hunters and wildlife officials say they are taking a toll on the whitetail deer herd. "They are in the marshes and beaches of Louisiana all the way up into the hills and piney woods and swamps," Jim LaCour, state wildlife veterinarian for the Louisiana Department of Wildlife and Fisheries, told FoxNews.com. "They’re in every habitat in the state." They’re very adaptable and also highly destructive," LaCour said. LaCour described the feral pigs, which can weigh up to 500 pounds, as "opportunistic" eaters -- omnivores that feast on anything crossing their path, including deer fawn, other piglets and dead animals. LaCour said hogs carry many diseases, such as leptospirosis, which can infect or kill other animals, like deer, as well as humans. "Hogs are the sport utility vehicle for disease and parasites -- they move them across the landscape," he said. "That bacteria [leptospirosis] can cause abortion in the deer – and it can kill adult deer or people." Their presence is also detrimental to the land, forcing wildlife officials to carry out aerial gunning in certain areas "because they tear up the marsh and that leads to coastal erosion." Hogs were first introduced to North America by Spanish settlers. The breed most commonly seen in Texas is a mixture of those hogs and Russian boars brought over more recently for sport hunting, according to the Texas Parks and Wildlife Department. Some speculate the population boom is due to relatively recent cross-breeding in the wild. Others, like LaCour, say the popularity of hog hunting in the 1980's and early '90's led humans to move the feral pigs from confined, geographically isolated areas into places they had never been before. Wild hogs can reproduce by the time they are 6 months old. Feral sows can have two litters per year averaging six piglets per litter, according to wildlife experts. Statisticians have determined that 75 percent of the population must be harvested to maintain a static population -- prompting Louisiana and other states to adopt liberal hunting policies when it comes to killing the hogs. Texas has the highest rate of feral hogs to date, according to environmentalists. For deer hunter Justin Lanclos, the very sighting of a feral pig means trouble. "If you start to see hogs in your hunting area, you are absolutely not going to see deer," said Lanclos, a 33-year-old bowhunter from Sulthur, La. "Deer are extremely smart and elusive," Lanclos told FoxNews.com. "They just don’t like to occupy the same area as hogs." Lanclos, the owner of retailer Louisiana Bowhunter, said he recently received a photo showing a herd of hogs -- or sounder -- running off with a whitetail fawn. The image, believed to have been taken in Louisiana, has since gone viral on social media. "We’ve got other photos of feral hogs carrying fawns," noted LaCour. "If the hogs are coming through a field and they happen to come across it, they’re going to eat it." http://www.foxnews.com/us/2016/03/31/deer-hunters-face-unwanted-competition-as-feral-hog-explosion-thins-herds.html
Oversensationalized. - Quote:
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mean, relentless and out of control
- Quote:
-
many diseases
- Quote:
-
omnivores that feast on anything crossing their path
- Quote:
-
dominating the food chain
I've seen this sort of news in my country as well. There was this hysteria about raccoons spreading diseases that kill people, but it turned out that it was extremely rare. Hogs eating fawns is not something that is surprising at all to Europeans. Hogs eating fawns isn't something surprising to someone familiar with these pigs either, article is obviously oversensationalized but doesn't mean it isn't worth sharing in a relevant thread.
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