I work at the N. C. Zoo, where we captive breed Red Wolves, and some pups born here have been successfully placed in wild Red Wolf dens to be adopted and raised wild--both a population boost and genetic diversity boost for the 100 to 150 wild Red Wolves on the coast in N. C. We JUST had one of the programs representatives come and give a lecture at our zoo, updating us on how things are going(GREAT program! I hope it continues--there is an effort afoot to end it, alas!)).
Red Wolf(Eastern Wolf)
I actually asked if anyone in her program knew of any "coywolf" genes in N. C.--they HAVE been documented as far south as Virginia so far. She didn't have any current knowledge on that, but there IS going to be an URBAN COYOTE study in Charlotte, N. C. starting up, and no doubt they'll be doing genetic tests.
I'll be VERY surprised if various different elements of the "canis soup" don't turn up! I personally saw a local news segment a few years back where someone got film of a wild canid alongside a highway near Raleigh, N. C. To me, it did NOT look like your typical coyote--the muzzle was much heavier(1st thing I noticed), and it looked to me to be at least part Red Wolf(and regularly observing some of this "old bloodline" of "pure" Red Wolves here at the N. C. Zoo, I'm purty familiar with the differences). No doubt lots of crossbreeding has gone on--an effort is made to try and control this(a WASTE, in my opinion!
Eastern Coyote(Coyowolf)
I'd personally take those crossbred pups and disperse them elsewhere, to get AS MUCH of that old Red Wolf genetic influence around as possible!), but no way can they get to 100% of the crosses, who then no doubt disperse widely upon maturity. Same thing happened up in the Smoky Mountain National Park back in the 1990's--though "officially" canceled(due to various problems, INCLUDING Red Wolves crossbreeding regularly with the local populous coyotes!), and "officially" reported to have retrieved all the "pure" Red Wolves, MANY hybrids remained and have continued to influence the coyote population there, as well!
Western Coyote(they bred with Eastern Wolves to create Eastern Coyotes(Coywolves)
So that's at BOTH ENDS of the state of N. C., AND eastern Tennessee, AND these guys can disperse for many miles, so whether officialdom wants to acknowledge it, I personally believe there ARE quite a few wild coy-wolf types out there with some of the old bloodline Red Wolf influence! But remember, that's NOT official(yet...) And I say, power to them! The return of the NEW "Red Wolves"!!!.....L.B.
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- U.S FISH AND WILDLIFE
- RED WOLF RECOVERY PROGRAM
Last Updated: 9/23/14
Red Wolves and Coyotes
Are red wolves and coyotes the same
species?No, red wolves (Canis rufus) and coyotes (Canis latrans) are two separate species. However, they are closely related evolutionarily and do share a recent common ancestor (see Chambers et al. 2012 for full details). Red wolves are larger; measuring about five feet long nose to tail and weighing 45-80 pounds. Coyotes are approximately three feet in length, and weigh 25-35 pounds. These are averages, and there can be some size overlap between the species given individual variation.
Red Wolf: Coyote:
Photo credits: B. Crawford /USFWS (red wolf), Jerry Murray (coyote) Red wolves are mostly brown and buff colored with some black along their backs; there is sometimes a reddish color behind their ears, on their muzzle, and toward the backs of their legs. They have tall pointed ears and long, slender legs with large feet. Coyotes can be observed with a variety of color variations ranging from buff, brown, grey, or black. Generally, coyotes tend to have a longer, narrower muzzle than red wolves. Red Wolf: Coyote: Photo credits: B. Bartel/USFWS
Do red wolves breed with coyotes?The short answer is yes, they can.
Red wolves (Canis rufus), gray wolves (Canis lupus), coyotes (Canis latrans), and domestic dogs (Canis lupus familiaris) and are capable of interbreeding and producing fertile offspring. While social structures and territoriality usually prevent such interbreeding, the combination of a small red wolf population, a large coyote population, and limited space in the recovery area can result in a breakdown of the natural barriers. During the initial site selection process for the red wolf restoration program, the northeastern North Carolina (NENC) Red Wolf Recovery Area was uninhabited by coyotes. However, coyotes have expanded their range eastward; individuals were observed in NENC beginning in the early-1990s.
As a result, an adaptive
management plan was needed to eliminate the threat of hybridization. Research has demonstrated that sterilized coyotes remain territorial and continue to defend space. It is this concept of holding space that is being applied to manage hybridization by providing managers time, information, and a higher degree of control over the recovery landscape, while simultaneously providing reproductive advantage to the red wolf.
Ultimately, sterilization is a
method that allows territorial space to be held until that animal can be replaced naturally or by management actions. Sterile “placeholder” coyotes are then naturally replaced when the larger red wolves displace or kill the coyote. Occasionally, we may remove a coyote from an area when we have the opportunity to insert a wild or translocated red wolf into that territory or if we have a red wolf dispersing into that area. The bottom line is that space is limited in the recovery area. Ideally, within the restored red wolf population in NENC, that space is initially best occupied by breeding pairs of red wolves, non-breeding mixed (red wolf/ coyote) pairs, and non-breeding coyote pairs. By sterilizing coyotes, introgression of non- wolf genes will be controlled and territories will be unavailable for colonization by breeding coyote pairs or red wolf-coyote pairs. As the red wolf population grows, having space available for dispersing red wolves becomes increasingly important, and this space is provided through natural interspecific competition and/or management actions. A coyote being fitted for a radio-telemetry collar. Photo by B. Bartel/USFWS. Currently, in addition to the ~70+ radio- collared red wolves, we are actively tracking and monitoring 60+ sterilized, placeholder coyotes. They are captured, processed, and released similar to red wolves (with the additional step of sterilization at a local veterinary hospital). |
Last Updated: 9/23/14
2 comments:
It might be misconstrued that I am negative about the Red Wolf restoration program(in N. C. or elsewhere), in favor of just letting Nature take it's course with the "new" Coywolves, but nothing could be farther from the truth! I'm FOR them ALL!!! But let me clarify myself better here--a lot of "purists" get the WRONG idea that just because I say "Yahoo" to the spread of Eastern coyotes and the amazingly(wink-wink) Red-wolflike Coywolves, that somehow I consider the "pure" Red Wolf program unnecessary because I personally believe(and I do!) that Red Wolves are just a stable-ized(naturally occurring) Grey Wolf X Coyote hybrid--but just because I believe they are a NATURALLY occurring "hybrid" DOESN'T mean I don't think they have value or should not be preserved AT ALL COSTS!!! IF Red Wolves ARE hybrids, I say "SO WHAT?"--why would that make them less valuable? There is much speculation that isolated evolution alone is NOT responsible for the emergence of new species--that hybridization throughout the history of the planet has had it's impact--and this relationship between wolves, coyotes, coywolves, and red wolves is THE PERFECT chance to study this phenomenon! And just as SENSIBLE dog breeders(NOT including those that breed only to win conformation dog shows here, but those putting FUNCTION, HEALTH, and TEMPERMENT before winning ribbons at dogshows!!!) try and preserve diverse bloodlines for genetic health and working ability, the OLD, ORIGINAL BLOODLINES of the Red Wolves are INVALUABLE in the same way! And yes, by all means try and preserve some area(s) where this old bloodline can be preserved! But ALLOW it to get leached into the local "canis soup" as well, DON'T euthanize hybrid pups between coyotes and red wolves--take them away from your old bloodline preservation area, but allow them to breed BACK into the general coyote/coywolf populations in other areas! "Reswamp" the coyote gene pool with Red Wolf genes every chance you get! It happens ANYWAY, despite all the "purists'" efforts to prevent it! This will only help to encourage the proper Eastern Wolf/"New Red Wolf" that is emerging to retake it's proper niche in the eastern forests of North America. People (Wolf biologists and show dog breeders!) need to GET OVER this anal anti-"hybrid" attitude, and EMBRACE it! But DO continue to preserve that "old bloodline"/"Pure" Red Wolf howsomever you can. In no way shape or form do I consider the red wolf program a waste! SO MUCH has been learned from it, and will CONTINUE to be learned! And if this program will see the POSITIVE, NATURAL side of hybridization, then they can stop apologizing and refuting all the hybrid claims used against Red Wolves by the opponents of such, and the opponents of the Program will have to find some other thing to whine about! But I DO realize this IS NOT a popular view by virtually anyone else involved--YET. But it COULD(and SHOULD) be....L.B.
L>B.............I posted your comments
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