18 final

Fauna Ryukyuana
ISSN 2187-6657
http://w3.u-ryukyu.ac.jp/naruse/lab/Fauna_Ryukyuana.html
沖縄島国場川水系饒波川から採集されたクサガメ, ヤエヤマイシガメ
および両種の雑種と推定されるカメの記録
嶋津信彦
神戸市 ([email protected])
,
. 2010, 2013
2
,
11
,
3
;
1.
;
.
;
(Yasukawa et al. 1996;
2007b).
,
1.
,
;
(
1998;
2011).
;
(
,
)
,
,
,
,
,
1
1
(
2005;
2006;
2009;
2012),
,
2003
2005
;
.
(
2007).
,
,
(
)
;
1 ,
.
(
2008).
,
,
1
;
.
.
;
.
,
]
Testudines
Geoemydidae
Mauremys reevesii (Gray, 1831)
,
,
,
,
,
,
1
,
(
2007a; Suzuki et al. 2011).
M. mutica (Cantor,
1842)
,
M. m. mutica
(Cantor, 1842)
,
1
,
M. m. kami
(Yasukawa, Ota & Iverson, 1996)
1.
,
1
2010
;
(
,
;
,
;
;
,
), 1
2013
(
).
Fig. 1. A map of the Noha River, a substream of the Kokuba River system on Okinawa Island, showing the sites where
turtle specimens (Mauremys) were collected in 2010 (closed circles, Chinese pond turtle Mauremys reevesii; open
circles, putative hybrid individual M. reevesii × M. mutica; black line, searching route), and the area searched in 2013
(area within two dashed lines).
1
1
1 mm
, KW–001)
.
.
,
.
,
.
(
2010
9
(
11
,
,
cm,
1).
(D
; 40 cm,
,
.
15.6 km)
9.0 km
Mauremys
2
,
1.2 m,
35
. 1 mm)
(
(Panasonic
, FT–1)
,
.
(2011)
(Mao 1971;
,
,
.
2007b).
,
(
[
,
1 g
.
,
2007a).
,
,
.
;
, 2013
6
29
11
27
10 , 2010
;
(
11.0 km
)
1.0
km
,
.
(
, fn–41,
; 72 cm,
;
44 cm,
55 cm,
11 mm,
1.7 m)
2,
3
.,
,
( 1,
1).
100–200 g
. 2013
11
24–27
(19–24
2
)
.
,
(
, CD–20PSX)
. (Yasukawa et al. 1996;
,
,
,
.
,
,
(
,
.
2007b).
;
,
.
2007ab).
,
15–18 cm
,
1. 2013 6–11
;
;
.
Table 1. Measurements of the Chinese pond turtle Mauremys reevesii, Yaeyama yellow pond turtle M. mutica kami, and
putative hybrids (M. reevesii × M. m. kami) collected from the Noha River, a substream of the Kokuba River system,
Okinawa Island, between June and November, 2013.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Taxa
Mauremys reevesii
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Mauremys mutica kami
Male
Male
Female
Female
Female
Male
Unknown
Unknown
Male
Female
Female
Female
Male
(mm)
Carapace
length
161
158
163
178
180
157
77
118
148
153
175
177
195
(mm)
Plastrum
length
143
132
136
149
155
125
60
110
122
131
147
148
157
(g)
Body
weight
698
515
554
742
865
506
115
228
413
511
722
751
831
Male
173
146
647
Collection
date
Sex
2013.8.11
2013.6.30
2013.6.30
2013.6.30
2013.6.30
2013.7.8
2013.8.11
2013.9.1
2013.9.1
2013.9.1
2013.9.1
2013.11.27
2013.9.1
2013.11.27
cf. Mauremys reevesii × Mauremys mutica kami
14
cf. Mauremys reevesii × Mauremys mutica kami
2
[Report] Shimadzu: Records of introduced turtles from Noha River
Fauna Ryukyuana, 18: 1–8.
. (
,
1996;
2007b).
,
2013
,
,
1
(No. 1;
3,
1
),
(No. 2–12),
2
;
( 1;
). 11
1,
11
,
(No. 13, 14)
14 cm
, 14 cm
.
.
2007b).
(
.
;
,
(Panasonic
2010
1
, FT–4)
,
;
.
(
(
1
1, 2).
,
,
.
2. 2010
1).
,
;
,
6
,
3
1
2
,
.
152.9 ± 29.5 (77–180) mm (
±
(
–
))
.
[
,
(n = 6)
170.9 ± 9.7 (153–180) mm,
(n = 3)
154.2 ± 4.4 (148–158) mm
. No. 5
,
.
(
1).
No. 13, 14 ,
.
(
3).
,
.
,
.
(
11
;
(
)
;
(
).
Fig. 2. A Chinese pond turtle Mauremys reevesii (upper) and a putative hybrid individual (lower, M. reevesii × M.
mutica) observed at the Noha River, a substream of the Kokuba River system, Okinawa Island, on September 11, 2010.
(
9
3
3. 2013
6–11
;
(No. 1),
(No. 13, 14)
(No. 3),
;
2
.
1,
1
.
Fig. 3. Lateral view of head and neck region of a Chinese pond turtle Mauremys reevesii (Specimen No. 1), a Yaeyama
yellow pond turtle M. mutica kami (No. 3), and two putative hybrid individuals M. reevesii × M. m. kami (No. 13, 14),
all collected from the Noha River, a substream of the Kokuba River system, Okinawa Island, between June and
November 2013. Numbers shown in photographs correspond to those in Table 1 and Appendix 1.
2007ab). No. 14
,
,
11
.
No. 13, 14
.
,
,
,
,
2008)
;
. No. 13
,
.
.
]
2007,
.
.
;
;
1996
.
(
;
;
,
1
;
;
,
.
;
,
.
1
,
1997).
1
[
,
.
,
,
4
,
,
;
1
195 mm
.
,
3
(
1
,
,
.
,
,
;
, 2010
.
2
;
.
.
.
.
.
[Report] Shimadzu: Records of introduced turtles from Noha River
Fauna Ryukyuana, 18: 1–8.
No. 14
, 2004
8 .
.
1
, 2005
;
.
,
. ,
2007).
(
2006;
.
, 2005.
.
;
]
2007a).
.
).
, 2007.
,
(
(
,
, 2005 (1): 73.
.
,
;.
[,
;
.
,
, 45: 79–81.
,
, 2008.
,
,
2007b).
[
(
No. 13
2007b;
mm
, 2012.
,
;
.
. Akamata, 19: 12–14.
1
,
.
,
.
.
.
]
1
.
1
,
,
,
,
;
.
;
,
.
1
.
.
.
.
.
.
(
:
.
.
:
(
.
.
.
)
.
,
5: 35–39.
, 2006.
1
,
;
;
.
,
219 mm
190 mm
. (Yasukawa et al. 1996;
2012). No. 13 ,
195
1.
.
, 2006(1): 28–34.
Mao S.H., 1971. Turtles of Taiwan: A natural
history of the turtles. Commercial Press, Taipei,
Taiwan.
, 1998.
;
Chinemys reevesii
(
:
).
, 36: 33–36.
, 1998.
1
.
[ , 6: 23–40.
, 1997.
.
(
),
2
. Pp. 175–266,
,
.
, 2009.
1
.
,
.
, 2011. 2010
300
1
.
, 16: 99–110.
Suzuki D., H. Ota, H.S. Oh & T. Hikida, 2011.
Origin of Japanese populations of Reeves’ pond
turtle,
Mauremys
reevesii
(Reptilia:
Geoemydidae), as inferred by a molecular
approach. Chelonian Conservation Biology.
10(2): 237–249.
5
, 2011.
.
,
.
, 2007a.
,
.
―
, 40: 30–67.
, 2007b.
,
.
, 39: 18–44.
Yasukawa Y., H. Ota, & J.B. Iverson, 1996.
Geographic
variation
and
sexual
size
dimorphism in Mauremys mutica (Cantor, 1842)
(Reptilia: Bataguridae), with description of a
new subspecies from the southern Ryukyus,
Japan. Zoological Science, 13: 303–317.
Records of the Chinese pond turtle,
Mauremys reevesii (Gray, 1831), the
Yaeyama yellow pond turtle, M. mutica kami
Yasukawa, Ota & Iverson, 1996, and
putative hybrids (M. reevesii × M. m. kami)
collected from the Noha River, a substream
of the Kokuba River system, Okinawa
Island
6
Nobuhiko Shimadzu
Kobe, Hyogo, Japan ([email protected])
Abstract. Two Chinese pond turtles Mauremys
reevesii, 11 Yaeyama yellow pond turtles M. mutica
kami, and three putative hybrid individuals (M.
reevesii × M. m. kami) were collected from the
Noha River, a substream of the Kokuba River
system, Okinawa Island, in 2010 and 2013. These
records suggest that exotic M. reevesii and M.
mutica are naturally hybridizing on Okinawa Island.
: 2014
: 2015
: 2015
9
1
2
21
17
14
[Report] Shimadzu: Records of introduced turtles from Noha River
Fauna Ryukyuana, 18: 1–8.
1. 2013 6–11
;
.
1,
3
.
Appendix 1. Carapace and plastrum of turtle specimens (Mauremys) collected from the Noha River, a substream of the
Kokuba River system, Okinawa Island, between June and November 2013. Numbers shown in photographs correspond
to those in Table 1 and Figure 3.
(
7
1.
.
Appendix 1. Continued.
8
[Report] Shimadzu: Records of introduced turtles from Noha River