Pennsylvania Game News - September 2010 - 17

the breeding season. Would APRs and more adult bucks lead to changes in breeding behavior, in particular conception dates? From 2000 to 2007, data on breeding dates from more than 2,500 females were collected. Average date of conception prior to APRs was November 17. Following APRs, the average date was November 16. BREEDING dates of adult females prior to (blue In Pennsylvania, most adult does bars) and after (red bars) antler restrictions. are bred in mid-November and sexutected nearly all yearling bucks, as well as ally mature female fawns tend to peak most adult bucks. Although that level of about two weeks later. Other aspects protection would attain our goal, it would of breeding ecology, such as pregnancy also make many adult bucks ineligible for rates and embryo counts, have also reharvest. Antler points were chosen to pro- mained at stable and healthy levels. tect most yearlings and allow most adult Based on these data, it appears bucks to be harvested. APRs did not significantly change the timing of breeding in Pennsylvania. Buck Survival Prior to APRs about 80 percent of bucks Genetic Impacts (a majority of which were yearlings) were Concerns over genetic impacts of harvested by hunters each year. This led selective harvest are common. Would to buck survival rates of less than 20 per- selecting bucks based on the number cent. Protecting most yearling bucks would of antler points they carried be enough increase buck survival, thereby increasing to alter future antler development? adult bucks in the population, the goal of Current research is clearly mounting APRs. evidence to the contrary. Based on survival rates of hundreds of First, yearling antler points are poor radio-collared bucks, yearling buck survival predictors of future antler developincreased from less than 20 percent to 64 ment. Research indicates little relapercent after APRs. Adult buck survival tionship between a buck’s first set of increased to 36 percent as well. antlers and those he carries at 4.5 years of age and older. So, using yearling Breeding Changes antler points as a harvest criterion With 80 percent of bucks being har- should not influence future antler devested each year prior to APRs, most bucks velopment in the population as a survived through only one breeding sea- yearling spike buck and a yearling son. Few older bucks were present in the 6-point can have similar size antlers population. Could APRs change the breed- by age 4.5. ing ecology in Pennsylvania’s deer herd? Second, most of Pennsylvania’s Although yearling bucks are capable antlered males are harvested after the breeders, the dominance-based breeding breeding season. About 75 percent of hierarchy to which white-tailed deer were Pennsylvania’s antlered deer harvest thought to conform was absent in Penn- occurs during the firearms season in sylvania due to the high buck harvest rate. late November and early December. This low number of older bucks and “un- The peak of breeding is mid-Novemstructured” breeding could have extended ber. As a result, most antlered deer
SEPTEMBER 2010 17



Table of Contents for the Digital Edition of Pennsylvania Game News - September 2010

Pennsylvania Game News - September 2010
Life & Times of the Whitetail Biologist
Contents
First Archery Buck
Red Oak, White Oak
Just Like the Good Old Days
Step Back in Time
Antler Restrictions in Pennsylvania
What Goes Up . . .
First Time’s a Charm
100 Deer
The Brute
Flight 93
Field Notes
Conservation News
Off the Wire
Another View
Fun Game
The Naturalist’s Eye
Straight from the Bowstring
Lock, Stock & Barrel
Crossings
Pennsylvania Game News - September 2010 - Pennsylvania Game News - September 2010
Pennsylvania Game News - September 2010 - Cover2
Pennsylvania Game News - September 2010 - Life & Times of the Whitetail Biologist
Pennsylvania Game News - September 2010 - Contents
Pennsylvania Game News - September 2010 - First Archery Buck
Pennsylvania Game News - September 2010 - 4
Pennsylvania Game News - September 2010 - 5
Pennsylvania Game News - September 2010 - Red Oak, White Oak
Pennsylvania Game News - September 2010 - 7
Pennsylvania Game News - September 2010 - 8
Pennsylvania Game News - September 2010 - 9
Pennsylvania Game News - September 2010 - 10
Pennsylvania Game News - September 2010 - Just Like the Good Old Days
Pennsylvania Game News - September 2010 - 12
Pennsylvania Game News - September 2010 - Step Back in Time
Pennsylvania Game News - September 2010 - 14
Pennsylvania Game News - September 2010 - 15
Pennsylvania Game News - September 2010 - Antler Restrictions in Pennsylvania
Pennsylvania Game News - September 2010 - 17
Pennsylvania Game News - September 2010 - 18
Pennsylvania Game News - September 2010 - What Goes Up . . .
Pennsylvania Game News - September 2010 - 20
Pennsylvania Game News - September 2010 - First Time’s a Charm
Pennsylvania Game News - September 2010 - 22
Pennsylvania Game News - September 2010 - 100 Deer
Pennsylvania Game News - September 2010 - 24
Pennsylvania Game News - September 2010 - 25
Pennsylvania Game News - September 2010 - 26
Pennsylvania Game News - September 2010 - The Brute
Pennsylvania Game News - September 2010 - 28
Pennsylvania Game News - September 2010 - 29
Pennsylvania Game News - September 2010 - 30
Pennsylvania Game News - September 2010 - 31
Pennsylvania Game News - September 2010 - Flight 93
Pennsylvania Game News - September 2010 - 33
Pennsylvania Game News - September 2010 - 34
Pennsylvania Game News - September 2010 - 35
Pennsylvania Game News - September 2010 - Field Notes
Pennsylvania Game News - September 2010 - 37
Pennsylvania Game News - September 2010 - 38
Pennsylvania Game News - September 2010 - 39
Pennsylvania Game News - September 2010 - 40
Pennsylvania Game News - September 2010 - Conservation News
Pennsylvania Game News - September 2010 - 42
Pennsylvania Game News - September 2010 - 43
Pennsylvania Game News - September 2010 - 44
Pennsylvania Game News - September 2010 - 45
Pennsylvania Game News - September 2010 - 46
Pennsylvania Game News - September 2010 - 47
Pennsylvania Game News - September 2010 - Off the Wire
Pennsylvania Game News - September 2010 - Another View
Pennsylvania Game News - September 2010 - 50
Pennsylvania Game News - September 2010 - Fun Game
Pennsylvania Game News - September 2010 - The Naturalist’s Eye
Pennsylvania Game News - September 2010 - 53
Pennsylvania Game News - September 2010 - 54
Pennsylvania Game News - September 2010 - 55
Pennsylvania Game News - September 2010 - Straight from the Bowstring
Pennsylvania Game News - September 2010 - 57
Pennsylvania Game News - September 2010 - 58
Pennsylvania Game News - September 2010 - 59
Pennsylvania Game News - September 2010 - Lock, Stock & Barrel
Pennsylvania Game News - September 2010 - 61
Pennsylvania Game News - September 2010 - 62
Pennsylvania Game News - September 2010 - 63
Pennsylvania Game News - September 2010 - Crossings
Pennsylvania Game News - September 2010 - I1
Pennsylvania Game News - September 2010 - I2
Pennsylvania Game News - September 2010 - Cover3
Pennsylvania Game News - September 2010 - Cover4
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