Bull. Ibaraki Nat. Mus., 20 : 15-22, pls Occurrence of the Mud Crab, Scylla paramamosain Estampador, 1949 (Crustacea: Decapoda

Size: px

Start display at page:

Download "Bull. Ibaraki Nat. Mus., 20 : 15-22, pls Occurrence of the Mud Crab, Scylla paramamosain Estampador, 1949 (Crustacea: Decapoda"

ぎんとうばら
5 years ago
Views:

1 Bull. Ibaraki Nat. Mus., 20 : 15-22, pls Occurrence of the Mud Crab, Scylla paramamosain Estampador, 1949 (Crustacea: Decapoda: Portunidae) from Holocene Deposits in Lake Hinuma, Ibaraki Prefecture, Japan Hisayoshi Kato and Hiromi Ikezawa Accepted October 28, 2017 Abstract Fossils of the mud crab, Scylla paramamosain Estampador, 1949, were obtained from the bottom of the Hinumagawa River in Ibaraki Prefecture, central Japan, in association with Upogebia sp. and several species of marine bivalves. Based on previous geological studies and bore hole data of the area, these fossils are considered to have been derived from the unconsolidated silt layer of a Holocene deposit exposed several meters below sea level. Carbon radioisotope dating using the fossil crab cuticle indicates 4,930 ± 30 yrbp and 3,910 ± 30 yrbp. Because the extant species of genus Scylla had long been recognized as a single species, S. serrata, most of the fossils from the Pleistocene and Holocene of the Indo-West Pacific region had been reported as S. serrata. This is the first fossil record of Scylla paramamosain based on current classification including four living species, and is paleobiogeographically important. Key words: Crustacea, Decapoda, fossil, Hinuma, Holocene, Ibaraki Prefecture, Scylla paramamosain. はじめに 1959; 1975; Scylla serrata Forskål, 1775 S. paramamosain Estampador 1949 * Natural History Museum and Institute, Chiba, Aobacho, Chuoku, Chiba , Japan ** Ibaraki Nature Museum, 700 Osaki, Bando, Ibaraki , Japan

16 2016 7 3 1 1 AMS 21 1959 1.5 km 3 1 1 6 m 産出地点および地質 1975 60 m 25 30 m 10 25 m 1975 図 1. 1: 25,000 Fig. 1. Decapod fossil localities and referred bore hole sites.

2 AMS km m 産出地点および地質 m m m 1975 図 1. 1: 25,000 Fig. 1. Decapod fossil localities and referred bore hole sites. The topographic base map is from the 1: 25,000 Isohama map sheet published by GSI. 表 1. Table 1. Localities of fossil decapod crustaceans. Loc '06.82" N, 4 7 m Scylla paramamosain, Scylla sp, Upogebia sp '57.06" E Loc '23" N, '20.13" E m Scylla paramamosain, Scylla sp. Loc '42.60" N, '28.26" E 5 6 m Scylla cf. paramamosain

3 KuniJiban 1 2 Loc m 13.1 m N 1 2 Loc m 8.15 m 10 m 31 m N 5 N m 1998 Usm 図 2. KuniJiban1:, 2 3: Fig. 2. Columnar sections of the Holocene deposits nearby the fossil localities. Data of the columnar sections are based on the KuniJiban (Integrated Geophysical and Geological Information Database) m 4 cm

4 18 ノコギリガザミ類化石の年代測定結果 AMS 2 no. 1 Loc. 1 no. 2 Loc. 2 1,000 Loc. 2 化石の記載 Order Decapoda Infraorder Brachyura Superfamily Portunoidea Family Portunidae Rafinesque Genus Scylla De Haan, 1833 Scylla paramamosain Estampador, 1949 Pl. 1 Pl. 2-3 Pl : INM : : 1995 Scylla serrata Forskål, S. serrata, S. tranquebalica Fabricius, 1798 S. paramamosain Estampador, 1949 S. olivacea Herbst, Keenan et al., ; 表 2. OxCal v4.2.4 Bronk Ramsey, 2009 Marine13 marine curve Reimer et al., 2013 marine100% Table 2. Radiocarbon dates of Scylla paramamosain. Calibrated with OxCal v4.2.4 (Bronk Ramsey, 2009), using Marine13 marine curve (Reimer et al. 2013), fully marine. 13 C AMS 14 C yrbp No.1 IAAA , calBP 5245calBP 68.2% 5387calBP 5375calBP 0.7% 5353calBP 5128calBP 94.7% No.2 IAAA , calBP 3835calBP 68.2% 3976calBP 3805calBP 95.4%

5 19 Waugh et al., 2006 Scylla 9 Schweitzer et al., 2010 Scylla marianae Hu and Tao, Schweitzer et al Scylla serrata Milne Edwards, 1860 Mathur, 1968 Cooper and Kensley, 1991 Etheridge and MacCulloch, 1916 Schweitzer et al., 2002 Idris, 1989 Hu and Tao, 1996 Yang and Wang, Ando et al., ; Scylla serrata 4 S. serrata Karasawa Scylla 3 1 Estampador 1949 Serène 1952 S. serrata 1 Scylla serrata 2 Scylla serrata Cooper and Kensley, 1991 考察 1975; ,353 5,128 calbp 3,976 3,805 calbp ,000 9,000 8,000 7,000 5,000 3,000 5,000 Usm 8,000 4,000 3, ; 1958; 1968; 1977; Karasawa and Matsuoka, 1991; 2012;

6 ,000 cal 7,800 calbp Scylla olivacea Scylla sp no.1 14 C 6 m/1, ; 2002; 2011 謝辞引用文献 Ando, Y., S. Kawano and H. Ugai Fossil stomatopods and decapods from the upper Pleistocene Ogushi Formation, Kyushu, Japan. N. Jb. Geol. Paläont. Abd., 276: (31): Bronk Ramsey, C Bayesian analysis of radiocarbon dates. Radiocarbon, 51: Cooper M. R. and B. F. Kensley An early Pleistocene decapod crustacean fauna from Zululand. South African Jour. Sci., 87: Etheridge, R. and A. R. MacCulloch Subfossil crustaceans from the coasts of Australia. Rec. Australian Mus., 11: 1-14, pls Estampador, E. P Studies on Scylla (Crustacea: Portunidae). Revision of the genus. Philippine Jour. Sci., 78 (1): Cancer (4): 5-8. De Haan, W Crustacea. In: von Siebold P. F. (ed.),

7 21 Fauna Japonica sive Descriptio Animalium, quae in Itinere per Japoniam, Jussu et Auspiciis Superiorum, qui summum in India Batava Imperium Tenent, Suscepto, Annis Collegit, Notis, Observationibus et Adumbrationibus Illustravit. pp. i-xvii, i-xxxi, ix-xvi, 1-243, pls. A-J, L-Q, 1-55, circ. tab. 2., J. Müller et Co., Lugduni Batavorum [= Leyden]. Hu, C.-H. and H.-J. Tao Crustacean fossils of Taiwan. 228 pp. Ta-Jen Printers, Ltd., Taipei, Taiwan. Idris, M. B Fossil crabs of Sabah. Warta Geologi (=Newsletter of the Geological Society of Malaysia), 15: COE pp : A A pp , , pp pp Karasawa, H Cenozoic decapod crustaceans from Southwest Japan. Bull. Mizunami Fossil Mus., (20): 1-92, 24 pls (8): Karasawa, H. and K. Matsuoka Fossil decapod crustaceans from the Holocene deposits of Katahama, Taharacho, Aichi Prefecture, central Japan. Sci. Rep. Toyohashi Mus. Nat. Hist., 1: Scylla serrata Forskål (5): : pp pp. Keenan, C. P., P. J. F. Davie, and D. L. Mann A revision of the genus Scylla de Haan, 1833 (Crustacea: Decapoda: Brachyura: Portunidae). Raffles Bull. Zool., 46: Mathur, U. B Record of fossil Scylla serrata and its bearing on the origin of intertrappeans of Bombay. Geol. Soc. India Bull., 5: Milne Edwards, A Histoire des Crustacés podophthalmaires fossiles. Ann. Sci. Nat., Zool., sér. 4, 14: Cancer (16): (9): p : (459): Reimer, P.J., E. Bard, A. Bayliss, J. W. Beck, P. G. Blackwell, C. Bronk Ramsey, C. E. Buck, H. Cheng, R. L. Edwards, M. Friedrich, P. M. Grootes, T. P. Guilderson, H. Haflidason, I. Hajdas, C. Hatté, T. J. Heaton, D. L. Hoffmann, A. G. Hogg, K. A. Hughen, K. F. Kaiser, B. Kromer, S. W. Manning, M. Niu, R. W. Reimer, D. A Richards, E. M. Scott, J. R. Southon, R. A Staff, C. S. M. Turney, and J. van der Plicht IntCal13 and Marine13 radiocarbon age calibration curves, 0-50,000 years cal BP. Radiocarbon, 55: : 2 (10): Cancer (24): pp., pp., Schweitzer, C. E., P. R. Scott-Smith, and P. K. L. Ng New occurrences of fossil decapod crustaceans (Thalassinidea, Brachyura) from late Pleistocene deposits of Guam, United States Territory. Bull. Mizunami Fossil Mus., (29): Schweitzer, C. E., R. M. Feldmann, A. Garassino, H. Karasawa, and G. Schweigert Systematic list of fossil decapod crustacean species. Crustaceana Monographs, 10: 222. Seréne, R., Les espèces du genre Scylla à Nhatrang (Vietnam). Proc. Indo-Pacific Fish. Council, 3: pp Waugh, D. A., Feldmann, R. M., Schroeder, A. M., and M. H. Mutel Differential cuticle architecture and its preservation in fossil and extant Callinectes and Scylla claws. Jour. Crust. Biol., 26: Scylla serrata (8): pp. Yang, S. and W. Wang On the early Holocene crab (Brachyura) fauna of Moyang Estuary, Guangdong Province, China. Mem. Beijing Nat. Hist. Mus., 30: 1-19.

8 22 ( 要旨 ) 加藤久佳池澤広美. 茨城県涸沼の完新統より産出したトゲノコギリガザミ化石. 茨城県自然博物館研究報告第 20 号 (2017)pp ,pls C yrbp yrbp 4 Scylla serrata 1 4 ( キーワード ):

9 23 3 Plates and Explanations 3 plates

10 24 図版 1(Plate 1) 1. Scylla paramamosain Estampador, 1949 INM a, ; 1b, Loc a, dorsal; 1b, ventral views. About 100 m downstream from Loc. 3. Scale bar: 5 cm.

11 25

12 26 図版 2(Plate 2) 1. Scylla cf. paramamosain INM a, ; 1b,. Loc. 3. 1a, dorsal; 1b, ventral views. 2. Scylla sp. INM , 3. Loc. 2. Left chela and third maxillipeds. 3. Scylla paramamosain Estampador, 1949 INM a, ; 3b, ; 3c,. Loc. 2. 3a, dorsal; 3b, ventral views. 3c, dorsal view of the carpus of the right cheliped. Scale bars: 1 cm.

13 27

14 28 図版 3(Plate 3) 1. Upogebia sp. INM Loc Scylla paramamosain Estampador, 1949 INM a, ; 2b,. Loc. 2. 2a, lateral; 2b, medial views of the right chela. 3. Scylla paramamosain Estampador, 1949 INM a, ; 3b, ; 3c,. Loc. 2. 3a, lateral; 3b, medial; 3c, upper surfaces of the right chela. 4. Scylla paramamosain Estampador, 1949 INM Loc. 2. Carpus and propodus of the left cheliped. Scale bars: 1 cm.

15 29

第２６号（ＰＤＦ納品用）／表１・表４・背

第２６号（ＰＤＦ納品用）／表１・表４・背 Bull. Tokushima Pref. Mus. No. 6 : 9-5, 06 AMS 4 C [Ken-ichi Nakao 3 : Molluscan fossils from the Naruto Strait, the eastern part of the Seto Inland Sea, western Japan and their AMS 4 Cages] AbstractMany