Mosquito survey 3rd-6th March 1981, Maningrida

(1)

Department of Health Library Services ePublications - Historical Collection

Please Note: Aboriginal and Torres Strait Islander people should be aware that this publication may contain images, voices or names of deceased persons in photographs, film, audio recordings or printed material.

Purpose

To apply preservation treatments, including digitisation, to a high value and vulnerable Historical collection of items held in the Darwin and Alice Springs libraries so that the items may be accessed without causing further damage to the original items and provide accessibility for stakeholders.

Reference and Research Disclaimer

Please note: this document is part of the Historical Collection and the information contained within may be out of date.

This copy is a reproduction of an original record. Please note that the quality of the original record may be poor and cannot be enhanced with the scanning process.

Northern Territory Department of Health Library Services Historical Collection

(2)

INTRODUCTION

MOSQUITO SURVEY 3rd - 6th MARCH 1981 MANINGRIDA

NORTHERN TERRITORY DEPARTMENT OF HEALTH DARWIN - NORTHERN TERRITORY

J.JL Hl.::;i)

S:3S ,772

\-101) 193\

Maningrida is an Aboriginal settlement situated at the mouth of the Liverpool River some 370 kilometres east of Darwin.

The settlement has about 700 people which is governed by a Town Council. The principle leader being Mr Joseph Mangudja, President, and Mr Wally Juttner, Town Clerk.

The purpose of the survey was to locate and map important mos qui to breeding sites and to conduct a container survey for Aedes aegypti.

METHOD

Catches of adult mosquitoes using the man biting method near to the residential area was limited, due to intermittent rain.

CO² baited light traps were positioned in and near the settlement to capture adult mosquitoes in an effort to determine numbers and species. The light traps were started at sun down and collected again shortly after first light the following morning.

A container survey was conducted in yards and around the dwellings of the settlement. The results of which are shown on Table 1.

A search for possible breeding sites of the mos qui to Anopheles farauti was undertaken in areas in close proximity to the settle- lST ment, together with the collection of other species of mosquito

72 larvae. The results are shown on Table 2.

(3)

2

RESULTS

Weather conditions hampered the survey both during the day and at night. Intermittent rain fell for the duration of the visit.

Man biting catches revealed the presence of eight (8) different species, Culex annulirostris being the predominant species.

Table 3.

The co2 baited light traps captured seventeen ( 17) different species, which have been listed on Table 4A of this report.

Culex annulirostris again proved to be the predominant species, followed by Culex sitiens.

The incandescent light trap, fell to the ground during the night when the tree branch suspending the trap broke off. The trap motor was still running at the time of collection, however, a portion of the catch was damaged by rain. See Table 4B.

Larval collections from containers within the settlement was to determine whether Aedes aegypti was present. As seen by the results Ae aegypti was not found. Table 1 shows Culex quinquefasciatus the predominant species at the time.

Because of the rain i t was difficult to determine the extent of the tidal water influence, thus eliminating any possibility of finding the breeding sites for Anopheles far au ti the vector of malaria. This also applies, for not finding Aedes vigilax.

The CO² baited light traps, placed at selected sites around Maningrida proved to be the most reliable method of collecting mosquito species in numbers.

The man biting method revealed only eight (8) species in comparison to the co2 baited light traps 17 species. The predominant species of mosquitoes captured was Culex annulirostris, the vector of Australian Encephalitis, whilst Culex sitiens which breeds along salt influenced marshes, was the next highest in number. Anopheles far au ti was the highest . in number of the Anopheles species.

(4)

, , .

t

3

Larval breeding sites were difficult to find, due to the amount of rainfall at the time. However, the sites containing larvae are marked on the area map.

Rainfall recorded for the period 3':·3. 81 - 6. 3. 81 was 258 mm and for the ten days of March 1981 4984 mm.

There were containers.

mosquitoes.

K. Hodqer W. Kelton

59 residential lots inspected for rain filled Of the 38 containers found, 11 were breeding No Aedes aegyPti larvae were found.

Officers Conducting Survey

P. Whelan

Officer in Charge

v--,. ^{I V}

(5)

.

-~ 4

TABLE 1

AEDES AEGYPTI SURVEY - MANINGRIDA - 3rd - 6th MARCH 1981

PREMISES No. TYPE OF CONTAINER BREEDING SPECIES AND No.

WITH WATER FOUND OF TIMES RECORDED

Sect 295 1 44 gallon drum nil

1 mop wringer bucket nil

1 aluminium boiler nil

2 tins nil

1 plastic wash bowl nil

Sect 278 1 copper nil

1 concrete wash trough Cx quinquefasciatus. 1 Cx annulirostris. 1

1 tyre nil

1 plastic ice cream

container nil

1 plastic garbage bin nil Sect 277 1 galvinised 5 gal drum nil

1 styrene esky nil

1 tyre nil

Sect 276 1 plastic garbage bin nil

II 275 Nil Containers

II 274 1 5 gallon drum nil

II 273 1 \ x 44 gallon drum nil

II 271 1 plastic ice cream

container nil

II 269 3 mop wringer buckets nil

II 260 3 tyres Cx quinquefasciatus. 3

1 refrigerator Cx quinquefasciatus. 1

II 261 1 tin nil

II 262 1 copper nil

II 263 1 tyre Cx quinquefasciatus. 1

If 264 1 mop wringer bucket Ae notoscriptus. 1

Sect 305 Nil Container

II 306 ^II ^II

II 307 ^II ^If

II 308 ^II ^II

If 309 ^II ^fl

II 310 ^II ^If

If 311 ^ff ^ff

If 313 ^ff ^ff

If 314 ^II ^ff

If 315 ^ff ^ff

ff 316 ^If ^ff

If 317 ^II ^ff

II 318 ^If ^II

II 319 ^II ^II

ff 320 1 tyre Cx quinquefasciatus. 1

(6)

5

TABLE 1 (Continued)

AEDES AEGYPTI SURVEY

-

MANINGRIDA

-

^3rd

-

6th MARCH 1981 PREMISES No. TYPE OF CONTAINER BREEDING SPECIES AND No.

WITH WATER FOUND OF TIMES RECORDED

Sect 321 1 tyre Cx quinquefasciatus. 1

II 322 1 tyre nil

Sect 52 1 plastic ice cream

container Cx quinquefasciatus. 1

If 53

If 54

II 55

II 56

II 57 Sewage effluent lying in yards Cx quinquefasciatus -

II 58 (not container breeding)

II 59

• ^II 60

Sect 84 Nil Containers

II 85 ^II ^II

II 86 ^II ^II

Sect 196 1 Rainwater tank overflowing nil

II 194 ^II ^II

II 193 1 5 gallon drum nil

II II

1 tin nil

II 192 2 5 gallon drums nil

If 190 Vacant Block

II 188 Vacant Block

II 186 ^II ^II

II 185 ^II ^II

II 184 ^II ^fl

238 Vistors Demountable

Quarters 1 tyre Cx quinquefasciatus. 1

(7)

Number of House Blocks Examined

59

TABLE lB

Aedes aegypti SURVEY - MANINGRIDA 3rd - 6th MARCH 1981

Number of House Blocks with Containers

21

Number of Containers with Water

39

Number of Containers With Larvae Present

11

Species and Number of Times Recorded

10 1 1

(8)

7

TABLE 2

MOSQUITO LARVAL SURVEY - MANINGRIDA - 3rd - 6th MARCH 1981

SITE No.

#1

LOCATION

2 km Sth west of settlement between track and rain forest.

BREEDING SITE Shallow grassy depression

SPECIES

2 Ae. (ver) sp.*

2 Ae.vigIIax-

* Immature larvae - possibly Ae.reesi but probably Ae.funereus as determined by E.N. Marks

#2

#3

#4

Paper bark swamp 2 km Sth west of settlement.

2 km Sth west of settlement. East end of rain forest behind sand dune at foot of rising ground.

Very shallow clear water with decaying leaf matter and

native couch. Between sand dunes and rain forest.

Shallow grassy

depression very clear water.

West of crocodile Grassy depression.

Research Camp Site. Beach side of paper bark swamp.

MANINGRIDA - 3rd - 6th MARCH 1981 RAINFALL REGISTRATION

March 3rd 79 mm

II 4th 64 mm

II 5th 15 mm

II 6th 100 mm

Total 258 mm

2 Ae.vigilax Cx.annulirostris Ur.albescens

2 Ae.vigilax

Ae.alternans

(9)

I

MANINGRIDA 3rd - 6th MARCH 1981

MANBITING COLLECTION ADULT MOSQUITOES 2 PEOPLE CATCHING

SPECIES

(/)

·rl

(/) H

·rl +->

(Y) en ^(/) ^(/)

~ 0 ^(/) ^;:j ⁰

·rl ^Q) X ^;:j ^Q) H ^(/)

+-> ^~ m ^Q) H ·rl 0

;:j ;:j ·rl .-1 H ^;:j .-1 ^Q)

m m .-1 ·rl ^Q) _~;:j ·rl H m H ^Q) ·rl ·rl .-1 b"l 0 ;:j H ;:j 0 0 ·rl +->

4-1 s ..C! :> ^4-1 ~ m ^(/)

SITE NO NUMBER BITING ₀ ₀ ₀ Q) Q) Q) X X

DATE TIME AND LOCATION PER MAN HOUR ^,::t: ^,::t: ^,::t: ^,::t: ^,::t: ^,::t: u u

3.3.81 1915-20 Site #2 2 km ·west of settlement 1038 173

3.3.81 1930-35 Site 3 between transient camp

and settlement 786 1 1 129

4.3.81 1920-25 Site 1 2.5 km west of settlement 42 4 2 1

4.3.81 1940-45 Site 4 2 km east of settlement 918 2 148 3

--

4.3.81 2000-2100 Visitors mess room - 2 4

TOTAL 6 3 4 1 2 1 450 3

(10)

MANINGRIDA - 4TH - 5TH MARCH 1981

CO2

BAITED TRAPS - ADULT MOSQUITOES PER TRAP NIGHT SPECIES

en ^U)

;:J ;::::$

~ +J

u ^U) m

~ . rl . rl U) H

U) >i H u ^;::::$ ⁽¹⁾ en

·rl . rl _~+J ^U) +J +J ;::::$

·rl Û) H Û) m Pi Û) Û) ~

tj-1 +J ~ 0 0 4-l m ·rl ^U) ·rl m ru

4-l ·rl ⁽¹⁾ ·rl H ^U) ⁽¹⁾ ;::::$ H ;::::$ X

s °'

^·rl

µ:=I 0 +J ~ ~ ·rl ^U) ~ ;::::$ (1) u ^r--; m H ⁰ ^U)

i-:1 H ^;::::$ ·rl ;::::$ (1) r--; ;::::$ (1) H ·rl ^U) ;::::$ r--; 0 ~ (1)

i:Q u m ^r--; m m ^;::::$ ^r--; ·rl ⁽¹⁾ ~ 0

s

^·rl ^4-l ^+J ~

~ ^~ H r--; H +J ~ r--; +J ~ u +J ⁽¹⁾ ·rl ~

°'

E-1 m m ^·rl ⁽¹⁾ ^·^rl ~ ;::::$ ·rl ;::::$ 0 0 H ^·rl ~ m m

..Q 4-l _~

s

^..Q ^ru Pi ^U) ^4-l ~ ~ +J :> ^;::::$ X

s

~ ~ ~

~

^X ^X ^X ^X ^X ⁽¹⁾ ⁽¹⁾ ⁽¹⁾ ⁽¹⁾ ⁽¹⁾ ^m ⁰ ^H

DATE SITE NO AND LOCATION < < < u u u u u ~ ~ < ^~< ^~^u ^E-1

4/3/81 3A between transient camp and settlement 1 1 2 24 3 2

4/3/81 SA 1,. ·km north east of settlement 6 3 800 300 6 1 2 14 2 2

5/3/81 2A 2 km South West of settlement 8 28. 11 800 4 36 1 6 1 4 13 14 1

5/3/81 4A 1 km North East of settlement 1 6 1 1 840 295 1 1 3 6 1 1

5/3/81 lA Leper's Hole perimeter of settlement 1 45 1 5 1 2 2 .,

TOTALS 10 41 5 12 2 2509 1 439 1 8 8 5 4 22 21 11 2

""

(11)

MANINGRIDA 4th MARCH 1981

INCANDESCENT LIGHT TRAP ADULT MOSQUITOES PER TRAP NIGHT

. en r-l H

H ⁰⁾

r::Q ^{. r-l} .µ .µ

. r-l en en en

tji .µ ₀ en rd . r-l

4-l . r-l H en X ::::1 ^tJ) r l

µ.:j 0 .µ . r-l _~ rd ⁰⁾ 0 rd

...:I H ::::1 ^{. r-l} r l ⁰⁾ r l H ..c: ^H

0 r::Q u ^rd ^{r l} ::::1 ^{. r-l} ^{. r-l} ⁰⁾ .µ 0)

r-i ~ _~ H r l ~ .µ tJ) ~ ~ .µ

E-l rd rd . r-l _~. r-l . r-l ::::1 rd rd

,_q 4-l ..c: ^rd en ::> ^4-l X r l

DATE SITE No. AND LOCATION ~ ~ ~ X X ⁰⁾ ⁰⁾ 0 H

~ ~ ~ u u ~ ~ u 0

4.3.81 lA 2.5 km west of settlement 2 4 5 310 9 2 3 2 3

•

(12)

-: I)

,i I

a.

:l.

a. I

a. l.i a.I

a. a.

0 Q a.

Q a.

__ L__

\}

I]_

(13)

.. .

_I,

•

Le (,.,E,v-..c::,

® ,,..,,,,...,G,-;l(.:,V'J::;S

'-4 ^N(J!SH/,/Ar.,,,<_

• /i?,'1'N ro;aA>;;,/sw_.'Y"

ro ,q,,,~ h~L...D,.

~ 5eW..,4.S:, ~ , V O ~

@ C.0² ~ONT ,;q"}O, S,74.5

QQz /11A.,.f 8,/1,.,,;G,- S,~5

[EI /,1c,,,,,,.,~~c,;,., T L,&#r z:;;;,,I° s,7£_

&_ L.-"R.V-"/.. u,/IEcifo,v S,7£

~ ~<Ks / '?oNt>5.

o-,r

I