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Variation in Ommatidial Number of Females of Culex pipiens
complex
Kurokawa, Kenji; Oda, Tsutomu; Ueda, Masakatsu; Mori, Akio;
Suenaga, Osamu; Mine, Mariko; Eshita, Yuki
長崎大学医療技術短期大学部紀要 = Bulletin of the School
of Allied Medical Sciences, Nagasaki University. 1990, 3, p.7378
1990-03-31
http://hdl.handle.net/10069/18120
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http://naosite.lb.nagasaki-u.ac.jp/
Variation in Ommatidial Number of Females of
CαZεκ．ρ‘Pεeηscomplex
Kenji KuRoKAwA，1Tsutomu ODA，2Masakatsu UEDA，1
Akio MoRI，10samu SuENAGA，3Mariko MINE，4
an（1Yuki ESHITA5
Abstmct The number of ommatidia in compound eyes of females ofσμZεκ
P‘ρ‘ε几s 肌oZθsεαs，Cκ．P．Pゆ‘θ船，Cx．P．Pα1♂θηs，and Cκ．P．（1顔π9μθプdsc‘α施s was
counted．The ommati（lial number varied with the strain，but the females of Ja−
panese strain ofσκ．p．η↓oZθsωs could be di合tinguished from thoseof Cπ．p．plρか
θηs，Cκ。」ρ．．ραIZθ几s and Cκ．、ρ．g痂ηαこ」4αεc6α如s from the difference in ommatidlal
number．
Bu1L Sch．Allied Med．Sci．，Nagasaki Univ．3173−78，1989
Keywords：Cα」θκP‘Pεθπscomplex，0漉κμP勉smoZθs伽，Ommatidialnum−
ber，Compound．eyes
lntroduction
In the previous paper1），we reported that ommatidial number of compound
eyes of the females of CαZθκpどp‘θπs mo♂es加s differed from that of those of
OμZθκ，ρ顔θηs、ρ‘ρ‘επs which belong to the member of the mosquito of C認εκ
p顔eηs complx．This finding may be useful for distinguishing the females of
Cκ。P。肌oZε鋤sandonesofCκ．P．．ρ1ρ‘επs，Cκ，P．PαZZθηs，andσ苫，．ρ，α伽9αe一
∫αsc∫α如s．Therefore，we examined．the number of ommatid．ia in compoun（l
eyes of females of various strains of C認θκp願eηs complex obtaine（1from
various countries in the world．．
1 Department of Medical Zoology，Nagasaki University School of Medicine
2 Department of General Education，the SchoolofAllied Medical Sciences，NagasakiUn−
iversity
3 1nstitute of Tropic副Medicine，Nagasaki University
4 Scientific Data Center of A−Bomb Disaster，Nagasaki University School of Medicine
5 Department of Parasitology，Teikyo University School of Medicine
一73一
Kenji KUROKAWA et al
Materials and methods
Table I shows the outline of the materials. The methods for counting
ommatidial number of compound eyes have been previously reported* )
Table l. Strains of Culex pipiens complex
Strain
Date of collection
C,ollection site
Generation
in the experiment
Cx. p. molestus
Tokyo, Japan
Nagasaki, Japan
Kagoshima, Japan
Tokyo
Nagasaki
Kagoshima
Teheran
Egypt
February
November
1964
1980
October , 1988
Tehe.ran. Iran
Ezbeth-el-Borg, Egyp t
1980
F40
F67
Fl 3
F37
F31
Cx. p, pipiens
Finland
Leningrad, USSR
Helsinki
Leningrad
Hamburg
September
September
Hambu rg , We s t - Germany
1984
1987
February , 1985
F1
Abashiri, Japan
Aino, Japan
Kagoshima, Japan
Shanhai, China
Nlay, 1979
December , 1981
November , 1984
Septeluber 1981
F82
F54
F18
F3
Nase, Japan
Naha, Japan
Manlla, Philippine
Bangkok, Thailand
Kuala Lumpur, Malaysia
Rabaul, Papua New Guinea
Jakarta, Indonesia
Paramaribo, Surinam
Khartum, Sudan
April, 1982
March, 1982
July, 1983
F37
F46
F57
Hels Ink L ,
Cx. p, pallens
Abashiri
Nagasaki
Kagoshima
Shanhai
Cx, p. quinquefasciatus
Amami
Okinawa
Philippine
Thailand
Malays i a
Papua New Guinea
Indone s i a
Surinalu
Sudan
*
September , 1981
March, 1986
June, 1983
June, 1983
F35
F57
1979
1970
The generation of mosquitoes reared in the laboratory of Nagasaki University
School of Medicine.
Results and discussion
As previ6usly reported, there were 9 ommatidia in all rows in the Helsinki
strain in Cx. p.pipiens. Most of the females of the Leningrad strain had 9
ommatidia in all rows, but some had 8. In the Hamburg Cx.p.pipiens , most
of the females had 9 ommatidia, but some had 8 or 10 in the rows, and most of
females in Egyptian strain of Cx. p. molestus had 8 ornmatidia. In this experi-
ment, the remaining females of Egyptian strain were dissected and the results
are included in Table 2.
Table 2 shows the distribution frequency of the ommatidial number in compound eyes of Cx. p. molestus , Cx. p . pipiens , Cx. p . pallens , and Cx. p. qu-
inquefasciatus females together with data in the previous paper. In Cx . p.
molestus , most of the females had 8 ommatidia in the 4th to the 6 th rows,
but some of them had 9 ommatidia. The rate of females with 9 ommatidia var- 74 -
Variation in vmmatidial number of females
Table2．
Ommatidial number of females ofωZθκplρ‘θ船complex
0皿皿at i（1i al nu皿bers
Row of No
Stra．in
co皿pound fe皿ales
eyes dissecte（i
8
9
2（ 5．9）
10
Cヱ，」ρ．η㊥oJesεωs
4
5
6
34
34
34
32（ 94．1）
29（ 85．3）
29（ 85．3）
4
5
6
55
55
55
55（100．0）
53（ 96．4｝
55（100、0）
Kagoshi皿a
4
5
6
46
46
46
46（100．0）
46〔100．0）
46（100．O）
Teheran
4
5
6
59
59
59
56（ 94．9）
43（ 72．9）
52（ 88．1）
16（ 27．1）
4
5
6
55
55
55
41（ 74．6）
37（ 67．3）
27〔 49．1）
14（ 25，5）
18（ 32．7）
28〔 50，9）
Helsinki
4
5
6
30
30
30
Leningrad
4
5
6
Tokyo
Nagasaki
Egypt
5（14．7）
5（14．7）
2（ 3．6）
3（ 5．1）
7（11，9）
ex，P．P‘ρ‘eπs
Ha皿burg
9
9
9
30（100．0）
30（100．0）
30（100，0）
3（33．3）
2（22．2）
2（22．2）
6（66．7）
7（77．8）
7（77．8）
37（ 78．7）
45〔 95．8）
41（ 87．2）
4
5
6
47
47
47
lO（ 21．3）
4
5
6
30
30
30
1（ 3．3）
4
5
6
76
76
76
13（ 17．1）
4
10（ 22．2）
5
6
45
45
45
4
5
6
52
52
52
11（ 21．2）
3（ 6．4）
2（ 4．3）
3（ 6．4）
oκ．P．PαJJeηs
Abashi r i
N母gas aki
Kagoshi皿a
Shanhai
（
） ち of fe皿ales
一75一
1（ 3．3）
2（ 3，9）
29（ 96．7）
26〔 86．7）
22（ 73．3）
4（13．3）
7（23．3）
63（ 82．9）
70（ 92，1）
67（ 88．2）
6（ 7．9）
34（ 75．6）
36（ 80．0）
25（ 55．6）
9（20．0）
20（ 44．4）
41（ 78，9）
49（ 94．2）
46（ 88．5）
4（ 7．7）
9（11．8）
1（ 2．2）
3（ 5．8）
Kenji KUROKAWA et al
Table 2 (contmued)
Strain
Row of
No
com pound
f emales
eye s
dissected
Omlrat i d i al
numbers
10
9
8
Cx. p. quinquefasciatus
Amam i
4
5
6
34
34
34
13( 38.2)
4( 11.1)
5
6
36
36
36
4
5
6
40
40
40
4
5
6
41
41
41
4
5
6
40
40
40
4
5
34
34
15 (
Okinawa
Phil ippine
Thail and
Malays i a
Papua New Guinea
Indonesia
Surinalu
Sudan
(
21 (
61.8)
32 (
94 . I )
2(
30 (
88 . 2 )
4(
5. 9)
8)
l I .
32 (
88.9)
31(
86 . I )
2.8)
31 (
86 . I )
6{ 15.0)
1( 2.5)
34 (
85.0)
37(
30(
92 . 5 )
2(
5 .o)
75 . O )
10 (
25 .o)
41 . 5 )
24 (
58 . 5 )
39.0)
18( 43.9)
25 (
61 . O )
23(
56 , l)
1(
17(
16 (
34 (
85.0)
35 (
87. 5 )
35 (
87.5)
11( 32.3)
19 (
23 (
55.9)
67.7)
34
10 (
29 . 4 )
24 (
70 . 6 )
4
5
6
38
38
38
21 (
55 . 3)
17(
44 . 7 )
15 (
39 . 5)
23 (
60.5)
10 (
26 . 3 )
28 (
73 . 7)
4
5
6
53
53
53
2(
3(
3(
3.8)
5.7)
5.7)
51 (
96 . 2 )
50 (
94 . 3 )
50 (
94 . 3 )
4
5
50
50
50
5(
1(
2(
lO . O )
6( 15 . O )
5( 12.5)
5( 12.5)
44 . I )
2.0)
4.0)
5( 13 .9)
4( 11 .1)
45 ( 90 . O )
49( 98 . O)
48( 96.0)
): '/. of f emales
ied with the strain. The Egyptian strain had the highest incidence of females
with 9 ommatidia, and variation of the incidence was small in Japanese strain.
In Cx.p. ipiens , most of the females had 9 ommatidia in the rows, while a
few of them had 9 or 10 as mentioned above. The incidences of such females
also varied with the strain. This was similar to that of the females in Cx. p.
pallens and Cx. p. quinquefasciatus. It is interesting that the 10 ommatidia
females did not appear in the strains of Cx.p. quinquefasciatus collected in
Thailand. Malaysia. Papua New Guinea. Indonesia. Surinam, and Sudan. In
conclusion, the ommatidial number in the females of Cx.p. molestus differs
- 76 -
Variation in vmmatidial number of females
from those of Cx.p.pipiens, Cx.p.pallens, and Cx. p. quinquefasciatus. But
the females of Japanese Cx. p. molestus and those of the other strains could
be discriminated by counting the number of ommatidia, because variation of
ommatidial nurnber was small in Japanese Cx. p. molestus.
Ref erences
1 ) Kurokawa K, Oda T, Ueda M, Mori A, Zaitsu M, Suenaga O. Ommatidial
number of females of European Culex pipiell)s pipiens. Bull Sch Allied
Med Scl Nagasaki Univ 1988 ; 2 : 25-35.
(1989
- 77 -
# 12 ; : 28 EI :
:)
Kenji KUROKAWA eεα‘
アカイエカ群の雌の個眼数の変異
黒川 憲次1小田 力2上田
正勝1森
三根真理子4
江下 優樹5
1
2
3
4
5
章夫1末永 敏3
長崎大学医学部医動物学教室
長崎大学医療技術短期大学部一般教育
長崎大学熱帯医学研究所
長崎大学医学部付属原爆資料センター
帝京大学医学部寄生虫学教室
要 旨 種々の系統のアカイエカ群の雌の個眼数を調べた。チカイエカの個眼数は
一般に8個であるが、イランとエジプト系のそれはかなり変異した。日本産のチカイ
エカでは変異の幅は小さかった。ネッタイイエカ、アカイエカ及びトビイロイェカで
は9個の個眼を持ったものが多かったが、8個のものもあった。したがって、日本産
チカイエカとその他のアカイエカ群を区別することは可能であろう。
長大医短紀要3：73−78，1989
一78一
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