Pest Management Programme

Stations (2022)

Overview at end of 2022

6000 stations, alternating traps & baits.

Spacing of stations – on perimeter tracks 12.5m, on internal tracks 25m

Key – Pest management areas within Sanctuary

LWH

Little Windy Hill

BH

Benthorn Bush

BW

Big Windy

RB

Rosalie Bay

TAU

Taumata

Contr

Control (unmanaged)

TR

Tryphena Ridge

 

Pig at trap

Date

TT % annual average

Events

LWH

BH

BW

RB

TAU

Contr

TR

1999-

2004 

Trapping Only

39.5

2005

Trapping with 2 x 1 week pulses cholecalciferol Strikers

42.5

38

2006

Trapping with 2 x 3 week pulses cholecalciferol Strikers

15.8

49

79.2

2007

Trapping with 2 x 6 week pulses cholecalciferol Strikers

8.2

10.4

9.6

91.2

Huge storms

2008

Trapping with 2 x 6 week pulses cholecalciferol Strikers

15.2

15.2

8.4

82.5

2009

Brodifacoum

11

9.4

17.6

48.3

2010

Brodifacoum

14

7.4

9.8

8.8

76

Drought

2011

Trapping 50% & 50%  150gram Diphacenone

Feb-May 2 x 20R brodifacoum perimeter track only

8.5

8

8

22

56

2012

Trapping 50% & 50%  100gram Diphacenone

Feb-May 2 x 20R brodifacoum perimeter track only

15

8

16

28*

88

2013

Trapping 50% & 50%  50gram Diphacenone

Feb-May 2 x 20R brodifacoum perimeter track only

6.5

5

16*

10

62

Drought

2014

Trapping 50% & 50%  50gram Diphacenone

Change Aug 2014 to

Trapping 50% & 20gram Cholecalciferol

13

9

20

16

54

2015

Trapping 50% & 20gram Cholecalciferol

LWH trapping 50% and 50gram Diphacenone

Oct, Nov – BW, RB tree baits

9.5

5

22

14

52

2016

LWH – Trapping 50% & 50 grams diphacenone

BH  – Trapping 50% & 20gram Cholecalciferol

RB – Perimeter 50% traps & 100grams diphacenone in trees. Internal 100% 100grams diphacenone in trees.

BW – Goodnature traps 50x100m spacing

9

11

26.4

12

54

Wet summer > high food abundance

Date

Management

LWH

BH

BW

RB

TAU

Contr

Events

2017

LWH – Trapping 50% & 100 grams diphacenone

BH – Trapping 50% & 100 grams diphacenone

RB – Perimeter 50% traps & 100grams diphacenone in trees. Internal 100% 100grams diphacenone in trees.

BW – Goodnature traps 25x100m spacing

TAU – 150gram diphacenone in trees. 3 pulses

7.5

5

31

2

5

43

Warm winter, wetter than normal summer

2018

LWH – Trapping 50% & 150 grams diphacenone- tree baits May – Sept

BH – Trapping 50% & 150 grams diphacenone

RB – Perimeter 50% traps & 500grams diphacenone in trees. Internal 100% 150grams diphacenone in trees.

BW – Goodnature traps 25x100m spacing to Aug 2018. Sept – Trapping 50% & 150 grams diphacenone

TAU – 150gram diphacenone in trees. 3 pulses

5.5

8

11.5

12

11.5

55

Warm winter, wetter than normal summer

2019

LWH – Trapping 50% & 100 grams diphacenone- Perimeter long life baits

BH – Trapping 50% & 100 grams diphacenone

RB – Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

BW –Trapping 50% & 100 grams diphacenone. Trial of diphacenone pellets.

TAU – 200gram diphacenone in trees. 3 pulses of 8 weeks

5

6.25

15

15

16

52

Drought

2020

LWH – Trapping 50% & 48 grams Double Tap pellet bait

BH – Trapping 50% & 100 grams diphacenone

RB – Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

BW –– Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

TAU – 100 gram diphacenone in trees. 2 pulses of 10 weeks.

6.25

5

12.5

0

10.6

54

Drought

2021

LWH – Trapping 50% & 48 grams Double Tap pellet bait to July. August 100 grams Diphacenone.

BH – Trapping 50% & 100 grams diphacenone

RB – Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

BW – Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

TAU – 100 gram diphacenone in trees. Continuous baiting replaced quarterly.

14.3

12.5

13.75

10

18.75

77.5

Wetter summer and spring

2022

LWH – Trapping 50% & 100 grams Diphacenone.

BH – Trapping 50% & 100 grams diphacenone

RB – Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

BW – Perimeter 50% traps & 100grams diphacenone. Internal 100% 100grams diphacenone.

TAU – 50 % traps & 100 gram diphacenone in trees. Continuous trapping & baiting replaced quarterly.

TR – 50% traps & 100 grams diphacenone

6.25

10

5

10

14.3

65

3(part year)

Very Wet summer and spring

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