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Post by brobear on Sept 20, 2022 0:44:52 GMT -5
Spectacled bear interaction with jaguars shaggygod.proboards.com/thread/799/spectacled-bear-interaction-jaguars There accounts that say the tapirs main enemies are jaguars and bears. Those bears could be presumed to be spectacled bears since they are the only ones that overlaps territories or lives in the same habitat potentially as the jaguar. The spectacled bear would usually avoid the jaguar since it feeds mainly on vegetables though it does occassionally eat meat. There is no accounts or records of them fighting over carcasses. "Predators of spectacled bear cubs include mountain lion (Felis concolor), and possibly male bears. Spectacled bears appear to avoid jaguar (Panthera onca), suggesting that jaguar might be considered a predator. The elevational ranges of these two species in Perú and Bolivia do not overlap on the same mountain slope, but do for 900m of elevation if the entire Cordillera Oriental is considered.Here, jaguar can occur up to 1,500m in elevation and spectacled bears can descend as low as 600m in elevation (B. Peyton unpubl. data)." I gave it the ole college try but after a strong search of the popular published literature I could not find any information on spectacled bear/jaguar relations. Apparently, what data exists on the topic is unpublished. "The elevational ranges of these two species in Peru and Bolivia do not overlap on the same mountain slope, but do for 900m of elevation if the entire Cordillera Oriental is considered. Here, jaguar can occur up to 1,500m in elevation and spectacled bears can descend as low as 600m in elevation (B. Peyton unpubl. data)". Use of the Amazon rainforest: Peyton (1999) noted that the Andean bear is not a permanent resident of the BTA (Amazon tropical forest), rarely being found below 650 masl. Based on the results presented here, it is thought that, although this species is certainly not a permanent resident, its presence in the BTAs evaluated can not be considered rare. In this work it is proposed that the Andean bear visits this habitat in a seasonal way, mainly during the dry season. "Spectacled bears appear to avoid jaguar (Panthera onca), suggesting that jaguar might be considered a predator (B. Peyton unpubl. data)". This clearly appears not to be the case: Does the jaguar limit the presence of the Andean bear in the Amazon rainforest? It was previously noted that the Andean bear seemed to avoid the jaguar, since its altitudinal ranges in Peru and Bolivia did not overlap on the slope of a single mountain (Peyton 1999). However, in this study it was determined that in the same areas where the Andean bear was recorded in the PNYC-RCY and the RCA, a high activity of the jaguar, presenting a greater relative abundance than the bear. Moreover in the PNYC, in a tree of Ormosia sp. (Fabaceae) were found marks left by an Andean bear and a big cat, the later very likely a jaguar. This suggests that the presence of the jaguar would not influence the displacement of the Andean bear to and in the BTA, at least in the directly evaluated areas.
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Post by brobear on Sept 20, 2022 0:46:56 GMT -5
More: Bogotá, July 24, 2020. Thanks to a photo-trapping process carried out in the Alto Fragua Indi Wasi National Natural Park, the registration of more than 15 species of wild fauna was achieved, including cats, bears, birds and rodents.
Six camera traps located during 45 days, allowed to identify the occupation of habitats and behavior of the wild fauna present in the protected area. Likewise, it is striking that one of the cameras recorded the presence of bears and jaguars on the same path, (species that usually do not share the same transects), which indicates that, thanks to the good state of conservation of the protected area, this territory allows varieties of wild species to converge.
"It is striking that one of the cameras recorded the presence of (andean) bears and jaguars on the same path."
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Post by brobear on Sept 20, 2022 0:50:16 GMT -5
More: Camera trap study finds a threatened high-elevation mammal community in Peru by Mike Gaworecki on 23 April 2019 "Due to their remoteness, the high-altitude tropical forests of the Cerros del Sira, an isolated mountain range in the eastern Andes of central Peru, are known to harbor a diverse array of rare and endemic species like the Sira currasow, a critically endangered bird that can be found nowhere else on Earth. An expedition to the Cerros del Sira resulted in the first-ever camera trap footage of the Sira currasow (Pauxi koepckeae) being made available to the public in 2015. That camera trap survey also discovered the presence of Andean spectacled bears (Tremarctos ornatus) in the remote mountain range — some 100 kilometers (or 62 miles) distant from any of the bear’s previously known habitat. This was an important discovery because, while the Cerros del Sira are known to harbor a unique and diverse array of Andean and Amazonian birds, amphibians, and plants, the mammal species who call the mountain chain’s tropical forests home are still poorly known and relatively under-studied." "Aside from revealing the distribution of and threats to the Cerros del Sira’s mammal community, the results of the camera trap survey led to a number of other insights. Pillco Huarcaya and team say that, to the best of their knowledge, their camera traps are the first to capture spectacled bears at the same location as jaguars — the two species are the largest land predators in all of South America, and they were both captured by the highest camera the team deployed, at an elevation of 1,920 meters. It was previously believed that the elevation ranges of the two species did not coincide on any single mountainside in Peru and Bolivia, only overlapping at an elevation of about 900 meters throughout the Cordillera Oriental branch of the Colombian Andes." "Of particular significance was the first detection (to our knowledge) of the two largest land predators in South America at the same camera location, the spectacled bear and the jaguar, on the highest camera, at 1,920 m. Bears were captured at elevations as low as 1,050 m, and both species were subsequently recorded at a camera station at 1,418 m in Soqtapata Reserve (13.350862°S, 70.84539°W); Rafael Pilares, pers. comm.). It has been suggested that the elevation range of these two species in Peru and Bolivia does not overlap anywhere within a single mountain slope, and overlaps only slightly at c. 900 m throughout the Cordillera Oriental (Servheen et al., 1999)." (a) Panthera onca and (b) Tremarctos ornatus (both captured at the same camera trap, at 1,920 m)
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Post by brobear on Sept 20, 2022 1:41:06 GMT -5
At this point, we have discovered just one confirmed case of a cougar ambushing and killing an adult American black bear. We have one confirmed account of a jaguar ambushing and killing an adult American black bear. The cougar was a large female who ambushed an average-sized she-bear in Montana. Previously, the she-bear had displaced the cougar from her kill, a deer carcass. 24 hours later, the hungry and desperate cat returned and ambushed the bear. As for the jaguar, he was a large male who ambushed and killed a young-adult female black bear.
We have no confirmed accounts of a jaguar or a puma ever killing an adult Andean bear. We have no confirmed report of a leopard ever killing any species of adult bear.
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Post by brobear on Sept 20, 2022 2:49:14 GMT -5
America's celebrity jaguar 'El Jefe' is a bear hunter - BY ETHAN SHAW OCTOBER 19 2016 www.earthtouchnews.com/natural-world/predator-vs-prey/americas-celebrity-jaguar-el-jefe-is-a-bear-hunter/ A male jaguar called El Jefe ("The Boss") has been in the news a lot lately. He's the only known wild representative of his kind in the United States, and his turf – the Santa Rita Mountains of southeastern Arizona – is being considered for a hugely contentious open-pit copper mine. And according to a recent Smithsonian Magazine profile, America's celebrity jaguar is also a bear killer. While shadowing El Jefe in the Santa Rita backcountry, biologist Chris Bugbee discovered the strewn bones of a black bear, including a crushed, tooth-punctured skull (photographer Bill Hatcher was able to capture several snapshots of the remains). Assisting with the El Jefe-tracking task was Bugbee's dog Mayke, a Belgian Malinois specially trained to sniff out jaguar and ocelot poop. Back at the lab, analysis later confirmed that jaguar scat collected at the scene contained bear hairs. According to Bugbee's colleague (and wife) Aletris Neils, with whom he runs the nonprofit Conservation CATalyst, the bear skeleton likely belonged to a young adult sow. The unusual find, Bugbee suggests, marks the first known instance of a jaguar preying on a black bear. Such an event could only occur in the American Southwest or northern Mexico, where the stomping grounds of the mainly temperate black bear and the mainly tropical/subtropical jaguar overlap. "It was north against south, and south won," Neils tells Smithsonian. As El Jefe's bear lunch suggests, jaguars are opportunistic hunters. They often actively prowl in search of prey, then attempt to stalk and kill any they encounter. More comfortable getting their paws wet than most felines, they'll also cruise riverbanks and wetland fringes questing for huge capybaras, as well as caimans, which can make up nearly 50 percent of jaguar diets in water-logged habitats. And as this footage plainly shows, the bigs cats are not afraid to pounce on full-sized caimans in their watery element, showing some mind-boggling strength hauling the reptiles ashore. That same muscle power and ease in the water come in handy when hunting supersized rodents – just watch this Brazilian jaguar in full submarine mode as it wrestles a capybara from the depths. In the Smithsonian article, Bugbee speculates El Jefe could have taken down the black bear by ambushing the unsuspecting animal as it foraged. The bear's mangled skull fits a distinctive pattern of jaguar kills: the big cats commonly dispatch capybaras by puncturing their braincase, a feat that requires precise fang placement and massive crushing power. (Jaguars have proportionately the strongest bite of any big cat, which also serves them well when munching turtles.) Interestingly, some evidence suggests that spectacled bears, the only South American representatives of the bear family, avoid jaguars where the two share habitat. More than a hundred species have been recorded as jaguar fodder across the cats' range, although recent research suggests they especially favour capybara, caiman, collared peccaries (or javelina), nine-banded armadillos, wild pigs, white-nosed coatis and giant anteaters (though as we saw just last month, giant anteaters aren't pushovers when it comes to jaguars). The study, nicely summarised here, speculated that jaguars might have escaped the great megafaunal extinctions at the end of the last ice age in the Americas by adapting to smaller prey, and consequently diminishing in size themselves. Jaguars only rarely tackle adult South American tapirs, the biggest terrestrial mammals in the Neotropics, although a beefy male named Aratiri in the Argentine Atlantic Forest is an accomplished tapir-hunter. El Jefe's bear lunch sheds a little light on the "phantom ecology" of jaguars in the American Southwest, which were mostly shot and poisoned out by the mid-twentieth century. Since the cats weren't well studied before effectively disappearing, we don't know much about their food preferences. The predators once flourished alongside grizzlies and Mexican wolves in the isolated mountain ranges of Arizona and New Mexico, along the Mogollon Rim, and occasionally beyond: as far north as the South Rim of the Grand Canyon, and eastward into South Texas thornscrub (and maybe even the swampy Texas-Louisiana border). Today, the nearest population of breeding jaguars to the US border exists in eastern Sonora. El Jefe, who first came on biologists' radar in 2011, is only the latest of a string of male jaguars – known to be impressive wanderers – to reclaim southern Arizona territory over the past couple of decades. (His most famous predecessor was Macho B, a longtime resident of the state's Tumacacori Highlands until he was controversially euthanised in 2009.
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Post by brobear on Sept 20, 2022 3:05:39 GMT -5
The bear El Jefe ambushed and killed was a New Mexico black bear - Accepted scientific name: Ursus americanus amblyceps ( Baird, 1859). Description: Medium sized black bear, adult males weighing between around 90 and 180 kg and adult females between around 45 and 114 kg. Length of adult bears averages around 170 cm for males and 150 cms for females. Range: Southwest USA in Colorado, New Mexico, Texas, eastern Arizona and southeastern Utah. Also in the extreme north of Mexico (see map below). Food: New Mexico black bears are omnivorous. In spring they eat grasses, flowering plants, roots, insects and carrion. In summer the diet expands to include berries, fruit and honey; and in autumn acorns, pinon nuts, and juniper berries. They will also eat small rodents and occasionally prey upon livestock. *Note: adult females from 45 kg (99 lbs) to 114 kg (251 lbs). *Quote: "... the bear skeleton likely belonged to a young adult sow." So, probably a she-bear well below 200-pounds.
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Post by brobear on Sept 20, 2022 3:50:56 GMT -5
Comparison between a North American cougar and a spectacled bear.
The adult Andean bear is not on the menu of either the jaguar nor the puma.
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Post by skibidibopmmdada on Sept 20, 2022 8:29:47 GMT -5
The bear El Jefe ambushed and killed was a New Mexico black bear - Accepted scientific name: Ursus americanus amblyceps ( Baird, 1859). Description: Medium sized black bear, adult males weighing between around 90 and 180 kg and adult females between around 45 and 114 kg. Length of adult bears averages around 170 cm for males and 150 cms for females. Range: Southwest USA in Colorado, New Mexico, Texas, eastern Arizona and southeastern Utah. Also in the extreme north of Mexico (see map below). Food: New Mexico black bears are omnivorous. In spring they eat grasses, flowering plants, roots, insects and carrion. In summer the diet expands to include berries, fruit and honey; and in autumn acorns, pinon nuts, and juniper berries. They will also eat small rodents and occasionally prey upon livestock. *Note: adult females from 45 kg (99 lbs) to 114 kg (251 lbs). *Quote: "... the bear skeleton likely belonged to a young adult sow." So, probably a she-bear well below 200-pounds. So a large jaguar killed a young female? Seems fair, tiger fans now get 500 feathers in their hat!!! Yeaaaaa a young female was killed woooohooo!.... our whole argument is in crippling debt and we are scraping at everything to try and prove tigers superiority against bears
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Post by brobear on Sept 20, 2022 9:24:49 GMT -5
Quote from Reply #5: It was previously noted that the Andean bear seemed to avoid the jaguar, since its altitudinal ranges in Peru and Bolivia did not overlap on the slope of a single mountain (Peyton 1999). However, in this study it was determined that in the same areas where the Andean bear was recorded in the PNYC-RCY and the RCA, a high activity of the jaguar, presenting a greater relative abundance than the bear. Moreover in the PNYC, in a tree of Ormosia sp. (Fabaceae) were found marks left by an Andean bear and a big cat, the later very likely a jaguar. This suggests that the presence of the jaguar would not influence the displacement of the Andean bear to and in the BTA, at least in the directly evaluated areas. *Note: So it appears that the Andean bear can live within locations heavily populated with jaguars.
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Post by OldGreenGrolar on Oct 9, 2022 4:47:08 GMT -5
/\ I guess it might be a mutual avoidance? Both animals can injure each other.
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Post by Montezuma on Dec 11, 2022 10:22:07 GMT -5
The reason on which, i think, bear and felines would attack each other in basically for food and young protection. There is plently of food in Amazon forests and Andeans, and even in winter, the food does not get as much less as in other parts of world. So thats why i think a jaguar or puma wouldn't have any need to ambush a young bear.
On the other hand, the Andean bear is highly omnivorous, focusing only on plants and fruits etc. It does not care for meat, and it does not need to clash with other predators like jaguars, pumas or foxes etc for kleptoparasitism. Just like other bears, i strongly believe that the Spectacled bear by using its superior size and strength would chase off both species of cats from their kills if it needs to, but, there focus on herbivorous diet does not make them to do it.
As seen in recent evidence, bears do not appear to avoid jaguars. And they do noy had to becausr they got superior size advantage and feel no threat from jaguars. With the increase of jaguar populations, bear populations feel no change so we can easily conclude that:
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Post by OldGreenGrolar on Jan 1, 2023 3:13:27 GMT -5
The largest big cat a spectacled bear can probably kill without risk of death would be a leopard. An exceptionally large male leopard might have a 40% chance to kill a male it’s own weight and a 20% chance to kill on 150 pounds larger than itself.
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Post by brobear on Jan 1, 2023 7:25:04 GMT -5
The largest big cat a spectacled bear can probably kill without risk of death would be a leopard. An exceptionally large male leopard might have a 40% chance to kill a male it’s own weight and a 20% chance to kill on 150 pounds larger than itself. The Andean bear would probably be the dominate Carnivoran where he lives, but, as Montezuma points out, he has no need or reason to fight with pumas or jaguars. I could see a Andean she-bear trying to defend her cubs from a male puma or jaguar being killed. But, this has not been known to happen. As Montezuma points out, food is relatively easy to find in S. America, so why challenge the she-bear?
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Post by OldGreenGrolar on Jan 1, 2023 8:15:56 GMT -5
/\ I am interested to size a real life interaction between them just as I am hoping to see a real life interaction between the male Amur tiger and male Ussuri brown bear.
It is much easier to find food in the Amazon compared to finding food in the Russian Tiaga.
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Post by brobear on Jan 1, 2023 8:44:34 GMT -5
I am also interested in a real life interaction between a big cat and a bear. Unfortunately (for us enthusiasts), such fights are exceedingly rare and so very unlikely for a competent witness to be on hand to catch it on video. A kill-site could be manufactured by placing the frozen carcass of a cow in a carefully selected location within the Russian taiga. Cameras (movement operated) could be placed in the surrounding trees. It would be very interesting to witness what takes place on a carcass regardless of there being any tiger and bear interaction. But, evidently, those involved are not as interested as I am. *I do believe that such an experiment could prove that the brown bear dominates any carcass that he discovers. My apologies for swerving off topic - Andean Bear and Big Cats.
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Post by Montezuma on Jan 1, 2023 10:03:09 GMT -5
Spectacled bear is my 3rd most favourite bear and i done adequate research on them. As in context with this topic, i havn't seen any evidence of bears avoiding pumas or jaguars. And, why should they? A male bear is larger than any cat in Latin America. I see no reason for both of them to intereact. Both habitat (bears in highlands and cats in low lands) are very different, so there is no feud over territory. Bear's appetite is basically herbivorous and so no need to chase off a cat from its kill. So i do not think that we can find some good evidence.
However, althought i don't consider it as a fact yet it can atleast give a appraisal. In Bolivia, their is a story where jaguars are about to kill carnage all the humans;
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Post by brobear on Jan 1, 2023 12:46:53 GMT -5
Quote; "In Bolivia, their is a story where jaguars are about to kill carnage all the humans;" I am assuming this post is incomplete.
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Post by Montezuma on Jan 2, 2023 10:15:08 GMT -5
Quote; "In Bolivia, their is a story where jaguars were about to carnage all the humans;" I am assuming this post is incomplete. Yes, sorry for that here i continue: In Bolivia, their is a story where jaguars were about to carnage all the humans; but in such prenacious time, the Jukumari (Spectacled bear) overpowered the jaguars with its strength and saved the humanity from the feline since the bear was a relative of humans. Another native story involves a bear, puma, fox and jaguar where the bear at the end appeared to be dominant over both felines. Such dominance of bear in cats in story can be drived as bears availing cats in wild observed by the native americans of bolivia. Its just my speculation. Any thought?
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Post by brobear on Jan 2, 2023 11:12:07 GMT -5
Quote; "In Bolivia, their is a story where jaguars were about to carnage all the humans;" I am assuming this post is incomplete. Yes, sorry for that here i continue: In Bolivia, their is a story where jaguars were about to carnage all the humans; but in such prenacious time, the Jukumari (Spectacled bear) overpowered the jaguars with its strength and saved the humanity from the feline since the bear was a relative of humans. Another native story involves a bear, puma, fox and jaguar where the bear at the end appeared to be dominant over both felines. Such dominance of bear in cats in story can be drived as bears availing cats in wild observed by the native americans of bolivia. Its just my speculation. Any thought? Aboriginal peoples, who were living close to nature for centuries, should certainly know quite well the "pecking order" of the local predators.
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Post by Montezuma on Jan 8, 2023 19:10:38 GMT -5
Lol, see this:- " Jaguars, pumas and wolves have been known to prey on spectacled bears, which can discourage their number in wild. Andean Condors and Harpy eagles can also prey on them""They live in high mountains to avoid predators like jaguars and pumas".www.google.com/url?sa=t&source=web&rct=j&url=https://www.ourendangeredworld.com/species/spectacled-bear/&ved=2ahUKEwjOo4CPlrn8AhUgR_EDHeiYD4E4ChAWegQICBAB&authuser=1&usg=AOvVaw2fbk9CffWPgQaVB9spvB67First of all, their is no report stating that wolves (maned wolves) or these gaint birds ever tried to attack Spectacled bears. Spectacled bears and jaguars co-exist peacefully. Its the diet that makes the bear to live on high alltitudes, not predation fear. Susan Paisley, one of spectacled bear's renowed experts, never report of bears avoiding jaguars. We have plenty full evidence that both bears and cats live peacefully in South America. There is not any predator report, not even on cubs, of spectacled bears by any predator. So this website does provide good information.
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