Heartworm and Dogs
♫ Thursday, March 31st, 2011Female heartworms bear living young – thousands of them in a 24 hour period. These young – the microfilariae – move inside the blood vessels for as long as several years, waiting to hitch a ride from a bloodsucking mosquito. They will experience changes inside the mosquito that get them to infect a canine, and they shift back to the initial host species the next time the mosquito bites. The procedure of modification in the mosquito requires about 10 days in warm climates, but usually takes 6 weeks in colder temps.
Parasites experience a number of life developmental periods before emergence as adults and typically require at least a couple hosts to complete the cycle. In heartworms, a mosquito will serves as as the intermediate host for the larval phase of the worm, also known as the microfilariae. The mosquito ingests the larva whenever it bites an infected canine and deposits its products in an uninfected dog when seeking another blood meal. The microfilariae drill down into the dog and go through several modifications to reach mature form, and then travel to the right side of the heart via a vein and wait for the chance to reproduce. Adult heartworms could reach 12 inches in length and can stay in the dog’s heart for many years. In North America April is the time when veterinarians begin testing for exposure to infected mosquitoes from the preceding season. Most advise and many owners use a year-round heartworm prevention plan to guard against the occasional mosquito flying around in areas with mild winters. If Our pet has already had his yearly check-up, contact your veterinarian to schedule a heartworm check. If he’s due for yearly vaccination, be sure to include a heartworm check during the visit.
