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Ticks

Coyote Tick Update

e-coyote-tick-by-mholland-049a2231For those of you who might be interested, I heard back from the TickEncounter Resource Center (www.tickencounter.org/) after submitting my photograph for identification.

Their response: You’ve encountered an adult female blacklegged (deer) tick. These ticks typically become very abundant after the first frost and remain active all winter whenever temperatures are above freezing. You might be interested in checking our hyperlink to see how much ticks can change their appearance the longer they’re attached and feeding.  It appears your tick was attached and feeding for about 5-6 days and then it detached from whatever it was feeding on–we’re wondering how you knew it was from a coyote and not a deer; maybe the footprints in the snow?? Autumn IS peak adult deer tick season but the activity of these ticks typically slows as it gets colder. They don’t die though.

This site is a great resource on ticks, tick-borne diseases and tick prevention provided by the University of Rhode Island.(I sent them the photo of the coyote bed so they would know how I knew it had fallen off a coyote, not a deer.)


Bedfellows

12-9-16-coyote-bed-and-tick-049a2237

When I head out to photograph for a blog post, my quest is usually for signs of animal behavior (unless I’m focusing on plants). I fail more often than I succeed, but once in a while I hit the jackpot. I am well aware that what I call a jackpot may not be considered as such by others…and I know my heart beats fast at sights (and smells) that others’ hearts do not. Today’s post may be such an occasion.

I decided to follow coyote tracks this week in the hopes of finding evidence of some kind of canine activity. After an hour or so of crossing fields and woods, the coyote entered thick brush, so dense that even it must have had some difficulty slipping through the brambles. At the edge of this brush, its tracks led to an old stump, on the top of which the coyote had curled up and taken a nap or a much-needed rest. Eventually it jumped off the stump and continued its journey.

Coyote beds are not that rare a find, but they are always fun to come upon. Thinking I had captured a worthy post photo/topic, I clicked away, after which I observed the coyote bed more closely. It was then that I detected something small and dark in the snow at the edge of the bed (circled in red in photo). Close examination revealed that a very engorged tick had evidently had its fill of coyote blood, and had dropped off into the snow. Frosting on the cake for this morning’s quest!

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Moose Affected By Global Warming

8-23-16  moose closeIMG_5459It is fairly well known that the Moose population in the Northeast (and elsewhere) has plummeted — New Hampshire has lost more than 40% of their Moose in the last decade, and this trend is occurring throughout northern New England. Global warming is at the heart of this decline. Warm winters have allowed the tick population to soar, and blood loss due to ticks has weakened Moose, making them susceptible to anemia and unable to fight off disease. The negative effect of warmer temperatures doesn’t stop there. Summer heat stress promotes weight loss, a fall in pregnancy rates and increased vulnerability to disease. Excessive warm weather drives Moose to seek shelter, rather than forage for much-needed food. This phenomenon has been described by Moose biologists as “one of the most precipitous non-hunting declines of a major species in the modern era.”

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Cold Snaps & Hardy Invertebrates

1-14-14 TICK IMG_0528As you may have heard, there could be a plus side to the sub-zero temperatures we’re experiencing this winter – the cold weather may well decrease the number of invasive pests we have. For example, the Hemlock Woolly Adelgid (the aphid-like introduced insect decimating the Eastern Hemlock population) succumbs at 4 or 5 degrees F. However, other insects aren’t phased by the cold until it dips way below zero. At -20 F., roughly half of the Emerald Ash Borer larvae (an invasive beetle that is highly destructive to ash trees) overwintering in trees will die. Once the temperature reaches -30 F., there’s a 90 percent mortality rate. Bed bugs face instant death at -22 degrees F., but it takes 24 hours to kill them at -11 degrees F. and 72 hours to kill them at 0 degrees F. Unfortunately, once an invasive insect establishes itself, even if its numbers go way down for whatever reason, it usually rebounds in several years’ time. Some invertebrates are not affected by the cold temperatures. The Black-legged (Deer) Ticks that reside on moose, deer, mice, birds and other hosts can withstand sub-zero temperatures as they have the warmth of their hosts’ bodies to keep them warm. In order for ticks to succumb to the cold, the frigid air has to last until May, when the fertilized female ticks fall off their hosts to lay their eggs.

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Birds & Ticks

7-18-13  song sparrow with tick 252Several recent studies demonstrate that wild birds are actively transporting ticks and their associated diseases during migration. In addition, a number of bird species are able to contract Borrelia burgdorferi (the bacterial causal agent of Lyme Disease infection) and transmit it to uninfected ticks that parasitize the birds for a blood meal. Since ground-feeding species such as Northern Cardinals, Gray Catbirds, Song Sparrows (pictured) and American Robins spend a significant amount of time foraging for food at the optimal height for ticks, they are excellent hosts and have all demonstrated the ability to infect larval ticks with Borrelia burgdorferi upon their first blood meal. (Look carefully at the Song Sparrow’s neck and you will find a tick.)