要旨集.indb

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1 :30 (1) 1. 10:30-10: :45-11: :00-11:15 (2) 4. 11:15-11: :30-11: :45-12:00 12:00-13:00 13:00-14:00 (1) 7. 14:00-14:15 Xyloredo Xylopholas ( : ) 8. 14:15-14:30 A new Meretrix species from Arabian Sea Chloe Martin Akihiko Matsukuma 9. 14:30-14: :45-15: :00-15:15 15:15-15:30 (2) :30-15:45 Cynthia D. Trowbridge :45-16:00 Placida sp. (sensu Baba, 1986) Cynthia D. Trowbridge

2 14. 16:00-16:15 (Semisulcospira) :15-16:30 DNA :30-16:45 17:15-19:15 (1) :00-10:15 Acanthopleura hirtosa, J. Shaw D. Macey :15-10: :30-10: :45-11: :00-11:15 11:15-12:15 12:15-13:15 (2) :15-13: :30-13:45 (Acanthopleura gemmata) :45-14: :00-14:15 (3) :15-14: :30-14: :45-15: :00-15:15

3 P1. Edmund Gittenberger P2. P3. P4. P5. Marisia cornuarietis (Ampullariidae) P6. Somsak Panha Chirasak Sutcharit P7. P8. P9. P10. P11. P12. P13. P14. P15. P16. P17. P18. P19. P20. Edmund Gittenberger P21. Widespread introgression of mtdna against prediction based on interspecific asymmetry of prezygotic isolation in land snailsamporn Wiwegweaw Takahiro Asami

5 mm 1 2 Nishihama S. and Yurimoto T.: Note on the occurrence of alien molluscs (Perna viridis and Nassarius sinarus) in Ariake Sound m 490m 1.2m 5cm 20cm 30mm (22 ) 2~3 5cm 10cm 20mm 7 / m ( 1 ) Katayama, M., Shimizu, R. and Matsumoto, H.: The first record of Limnoperna fortunei (Bivalvia, Mytilidae) in Gunma Prefecture

6 Ishii H. and the Research group for the freshwater molluscs of Yamato River: The distribution of the freshwater molluscs in Yamato River drainage basin, Kinki district ) 2) 3) Hori, S: Noteworthy marine mollusks representing a tropical Pacific faunal element found from the northern Yamaguchi and western Shimane prefectures in 2005

7 Kimura, S. : Rich Molluscan Fauna of Hamana Lake, Shizuoka Pref m 30cm Xenoskenea sp. Cornirostra sp. Xenoskenea Cornirostra Xenoskenea Elachisinidae Vitrinellidae 1 Hasegawa, K.: A unique gastropod assemblage found in Ago Bay, Mie Prefecture, under pearl oyster culturing rafts

8 7 Xyloredo Xylopholas ( : ) ( ) ( ) Xyloredo Xylopholas Turner 1972 Xyloredo 2 1 Xylopholas 1 (Xylophaga) Xyloredo Xylopholas m Xyloredo Xylopholas Xyloredo nooi Turner, 1972 Xylopholas altenai Turner, 1972 Mesoxylophaga teramachii (Iw. Taki & Habe, 1950) Xyloredo Xyloredo Xylopholas Haga, T. and Kase, T.: The first occurrence of the teredo-like wood borer Xyloredo and Xylopholas (Pholadidae: Xylophagainae) in the West Pacific 8 A new Meretrix species from Arabian Sea Chloe Martin (Museum National dʼhistoire Naturelle, Paris) and Akihiko Matsukuma (Kyushu Univ.) One articulated shell of unknown species of Meretrix from a lagoon near Karachi was observed at the U. S. National Museum of Natural History, Washington, D.C. More recently C. Martin collected a number of shells of the same species from archeological sites of Oman (4500 to 2000 BC). At the archeological sites, the Meretrix sp. was characteristically associated with mollusks of a lagoon, including Amiantis umbonella and Marcia opima. The followings are description of the Meretrix n. sp.: Shell antero-posteriorly elongate subtrigonal, thick, inequilateral, equivalve. Beak prosogyrous, moderately high, placed slightly anterior to midpoint of dorsal margin. Anterior margin more or less narrowly rounded; ventral margin widely rounded; posterior margin narrow, bluntly pointed; postero-dorsal margin long, more or less straight. Lunule weakly defined; no small pit at the commissure plane below lunule. Escutcheon very weakly defined. Outer surface smooth, without irregularly spaced growth striae at anterior area just behind lunule. Outer coloration white, glossy; inner coloration white, occasionally tinged with dark purple posteriorly. Hinge plate short, thick, arched, with weak AI, AIII, and three cardinal teeth in the right valve; strong AII, three cardinal teeth in the left valve. Pallial line more or less distinct, far from ventral margin. Pallial sinus extremely shallow, without heel. Anterior adductor muscle scar oval, smaller than oval posterior adductor muscle scar. This Meretrix sp. differs from Meretrix casta var. ovum (Hanley) illustrated by Hornell (1917, pl. 5, f ; pl. 6, f ) by possession of longer posterior half and very shallow sinuation just before postero-ventral corner.

9 9 JAMSTEC JAMSTEC Acmaeidae Bathyacmaea sp. 1 sp. 2 Bathyacmaea jonassoni Beck, 1996 sp. 3 sp. 4 sp. 3 Peltospiridae sp. 1 sp. 2 sp. 3 Puncturella Sasaki, T., Kano, Y., Fujikura, K. and Tsuchida, S.: New species of deep-sea limpets collected from Lau Basin and Kermadec Island Arc KH ,000-6,000 m 7.0 mm 9.5 mm, posterior notch basal notch Seguenziinae, Fluxinellini Ancistrobasis Ancistrobasis Kurihara, Y. and Ohta, S.: A new species of seguenziid gastropod from the Japan and Kuril Trenches

10 11 日本産ナメクジ類 ( 柄眼目 ) の分類学的研究の現状上島励 ( 東大院理学系 ) 日本に生息するナメクジには, 人家周辺に生息する外来種と山野に生息する在来種とがある. 前者は農業害虫として重要であり, 後者には絶滅危惧種が含まれる. しかし, これら日本産ナメクジ類の分類学的研究は遅れており, 種の認識および個々の種の分類学的位置については多くの問題がある. ナメクジ類の分類の現状と問題点について述べ, 最近の研究成果や未記載種や日本新記録種を紹介する. Ueshima, R.: Recent advance in taxonomy of Japanese stylommatopholan slugs 12 Cynthia D. Trowbridge (Department of Zoology, Oregon State University) Elysia trisinuata Baba, 1949 E. sugashimae Baba, 1955 E. viridis 100 Trowbridge, C.D., Hirano Y.M., Sudo, K., and Hirano, Y.J: Elysia trisinuata and E. sugashimae distinct species or intraspecific variation?

11 13 Placida sp. (sensu Baba, 1986) Cynthia D. Trowbridge (Limapontidae, Placida) Placida dendritica (Alder & Hancock, 1843) P. dendritica P. dendritica Baba(1986) Placida sp. Placida daguilarensis Jensen, 1990 P. daguilarensis Hirano, Y.J., Hirano Y.M., and Trwobridge, C.D.: Cryptic species of a common Japanese sacoglossan, Midoriamomo-umiushi 14 (Semisulcospira) Nishino & Watanabe (2000) Semisulcospira (Biwamelania) habei 13 Semisulcospira (Semisulcospira) libertina S. (S.) reiniana S. (S.) kurodai 5 5 S. (S.) libertina S. (S.) reiniana S. (B.) decipiens S. (B.) habei S. (B.) niponica S. (B.) decipiens 8 S. (B.) niponica S. (B.) habei S. (S.) libertina S. (S.) reiniana S. (S.) kurodai S. (B.) decipiens Kamiya, S., Hashimoto, T., Nakai, K., Matsuda, M., Takami, A. and Shimamoto, M.: Are the endemic species to Lake Biwa of the genus Semisulcospira monophyly?

12 15 DNA Clithon Neritidae Kano, Komatsu, 1986; DNA COI Kawaguchi, H., Kano, Y. and Miura, T.: Molecular taxonomy of Japanese gastropods in the genus Clithon (Gastropoda: Neritidae) 16 Vetigastropoda Geiger & Thacker, 2005; Yoon & Kim, COI Histone H bp 18S rdna 1.8kbp Cataeginae Ventsia, Xyloskenea Adeuomphalus Kano, Y.: Vetigastropod phylogeny and new concept of Seguenzioidea

13 17 Acanthopleura hirtosa * J. Shaw D. Macey Murdoch Univ. [* ] Acanthopleura japonica Acanthopleura hirtosa A. hirtosa A. hirutosa A. japonica A. japonica A. hirtosa A. hirtosa Okoshi, K., Shaw, J., and Macey, D.: Ontogenetic study of the Australian chiton Acanthopleura hirtosa a,b cm g 60, mm Honma, Y., Ushiki, T., Takeda, M. and Nakamura, Y.: Notes on the histology of ovarian eggs of an epipelagic octopus, Ocythoe tuberculata caught off Port Naoetsu, Niigata Prefecture, Sea of Japan

14 19 XX IV CHN mg (St. ) 0.47mg (St. XX) 0.86mg (St. ) 0.32mg (St. XX) go 2 /ind./day 23.3 (St. ) 152 (St. XX) gnh 4+ -N/ind./day (St. ) 111(St. XX) St. IV-VISt. XVIII XX Chou, K., Tsuchiya, K. and Segawa, S.; The amounts of the carbon and nitrogen and the rates of oxygen consumption and ammonia excretion of the eggs of Sepia esculenta 20 Shigeno, S., Sasaki, T., Moritaki, T., Kasugai, T. and Agata, K.: Are cephalopod arms/tentacles derived from the foot or head?: The origin of cephalopod body plan revealed by Nautilus organogenesis

15 21 2 Hiroshi Mori and Takahiro Asami: Mechanism of postmating and prezygotic isolation in land snails 22 Size-dependent sex allocation: SDA SDA SDA SDA Yusa, Y.: Evidence for size-dependent allocation in a simultaneous hermaphrodite, the sea hare Aplysia kurodai

16 23 Acanthopleura gemmata Yoshioka, E. and Fujitani, E.: Moving and feeding of the chiton Acanthopleura gemmata --- Does the chiton distinguish the walking from the mealtime? 24 T T 300ml T 0.15g Yoshida, K. and Yusa, Y.: Food preference of Physa acuta

17 Ebisawa, S., Segawa, S. and Tsuchiya, K.: Learning ability of Octopus ocellatus 26 (Cypraeidae) (Cypraea annulus) (Irie and Iwasa, 2003) bet-hedging Irie, T.: Geographic variations of body size in Cypraea annulus in Okinawa Island

18 27 Nerita albicilla m 30cm 30cm 0.1mm mm 26.2mm 4.4mm cm Noritake, S., Segawa, S. and Tsuchiya, K.: Distribution and habitat of Nerita albicilla in rocky shore of Banda, Chiba Pref. 28 Solen soleneae Callista erycina Montacutidae gen. et sp RDB 108 RDB RDB Yamashita, H., Nawa, J. and Maekawa, S.: Rare molluscs and present conservation measure of the Awase Tidal-flat, Ryukyu. How does RDB hold good for mollusc?

19 29 Yamashita, H.: Fishery and market molluscs of Korea P1 Edmund Gittenberger (Univ. of Leiden) Lymnaea peregra L. stagnalis Goto, K., Asami, T. and Gittenberger, E.: Dextrals and sinistrals of Lymnaea stagnalis develop in mutual symmetry?

20 P2 ( ) (Zachsia zenkewitschi Bulatoff & Rjabtschikoff, 1933) (Phyllospadix iwatensis) (Zostera marina) Sasaki (2006) lateral pouch D Haga, T.: Implications for the long dispersal of the rhizome-boring shipworm Zachsia zenkewitschi (Bivalvia: Teredinidae) in drifted eelgrass P Kawai K.: Relationship between common egg cowrie and soft coral

21 P Kuwahara, Y. and Murooka, M.: Freshwater mollusks of the midstream basin of the Amur River collected by Amur- Okhotsk Project P5 Marisia cornuarietis (Ampullariidae) Marisia cornuarietis Gloria & Walls, 1996 Masuda, O.: The danger of naturalization of the Marisia cornuarietis (Ampullariidae) from South America (particularly Venezuela)

22 P6,,, Somsak Panha, Chirasak Sutcharit (Chulalongkorn Univ.) Yumi Nakadera, Takahiro Asami, Keiichi Seki, Somsak Panha and Chirasak Sutcharit: Are sinistrals and dextrals mirror images of each other in Amphidromus atricallosus? P7 ( ) mtdna 12S 16S COI 1030bp Patellidae Nacellidae Lepetidae Acmaeidae Lottiidae Acmaeinae Lottiidae Pectinodontinae Lottiidae Patelloida profunda Nakano, T. and Ozawa, T.: Molecular phylogeny and biogeography of limpets of the order Patellogastropoda

23 P8 1cm 1 2cm Nuka et al % N= % N= % N= % N= % N= % Nuka et al Ornithological Science 4: : Nuka, T.: Effect of foot cropping by sanderling Calidris alba on Chion (Donax) semigranosus P9 (Neobuccinum eatoni) Chlanidota densesculpta C. elongata mm 8mm 8 15 mm 6 18 mm 8 25 mm mm 10 50mm mm 0.2 mm 0.02g 15 mm 0.3 mm 0.08g 18 mm 0.4mm mm 0.3 mm 0.14g 30 mm 0.2 mm 0.12g 50mm 0.02 mm 0.04g mm 50mm 40 mm 40 mm mm 14 2 Numanami, H., Matsuda, T. and Hirano, Y. : Growth rates of three Antarctic buccinid species under laboratory condition

24 P10 ( ) ( )JAMSTEC ( ) ( ) ( ) km 900 m JAMSTEC Numanami, H., Matsumoto, R., Aoyama, C., Machiyama, H., Hiruta, A., Hiromatsu, M. and Toh, H.: Benthic molluscan fauna around the methane plume area in Naoetsu Basin, eastern margin of Japan Sea P Ogasaka, R.: The exhibition of mollusks in the aquarium

25 P Owada M.: Organic sheets of rock-boring mytilids (Bivalvia: Mytilidae) P Saito, H.: A preliminary list of chitons (Mollusca: Polyplacophora) from Sagami Sea

26 P14 Stenomelania boninensis (Lea, 1856) NT Melanoides tuberculata (Müller, 1774) Stenomelania Melanoides Sasaki, T., Satake, K. and Tsuchiya, K.: Anatomy of Stenomelania boninensis (Lea, 1856) and a comparison with Melanoides tuberculata (Müller, 1774) P Corbicula fl uminea f. insulalis Sonohara, T., Nishio, Y., Tsuchiya, Y., Nagashima, T. and Ochiai, S.: Invasion of Corbicula fluminea into the Sagami river system and Katsura river system

27 P ( 42 ) 1922( 11 ) VENUS ( 13 ) 1977( 52 ) Sonohara, T., Nishio, Y., Tsuchiya, Y. Nagashima, T. and Ochiai, S.: The list of Corbicula samples in the National Science Museum Shinjuku Branch P Sugi, M. and Asami, T.: When do snails transfer a spermatophore?

28 P18 Patelloida pygmaea form heroldi Nakano & Ozawa (2005) Patelloida heroldi cm Acanthochitona defilippi Takada, Y., Abe, O. and Shibuno, T.: Long-term variation in a population of Patelloida heroldi on a boulder shore P19 ( ) GSI Udaka, H. and Numata, H.: Life cycle of the terrestrial slug, Lehmannia valentiana in Osaka, Japan and its control by photoperiod and temperature

29 P20 Edmund Gittenberger (Univ. of Leiden) Gould et al. (1985) Cerion Johnson (1982) Johnson (1987) DD dd DD dd Hiroki Utsuno, Takahiro Asami and Edmund Gittenberger: Developmental constraint suppresses evolution of mirror-image species P20 Widespread introgression of mtdna against prediction based on interspecific asymmetry of prezygotic isolation in land snails Amporn Wiwegweaw and Takahiro Asami (Dept. of Biol., Shinshu Univ.) Detecting the pattern and process of hybridization between species provides opportunities to understand the evolutionary processes of reproductive isolation. Through simultaneous reciprocal copulation between Bradybaena pellucida (BP) and B. similaris (BS), only BP produces fertile hybrids while BS lays no eggs. Thus, introgression of mtdna from BP to BS would be more likely than from BS to BP. However, we detected the BS haplotype of mtdna in many allopatric and sympatric populations of BP in the southern Boso peninsula. It suggests that mtdna leaks from BS to BP through backcross F 2 hybrids. We confirmed that BS produces F 2 hybrids by backcrossing with F 1 hybrids. In the field, BP has replaced BS within a few years after BP was first recorded in BS-dominating places. It suggest that F 2 hybrids carrying the BS haplotype likely mates with rapidly increasing BP instead of BS. Thus, population dynamics observed in the wild are consistent with the pattern of mtdna introgression detected. BPBSBP BS DNA BP BS F 1 BS F BS F BS DNA BP BP BS

Microsoft Word - 00_1_表紙.doc

Microsoft Word - 00_1_表紙.doc 7 20 20089 002 005 019 015 029 038 041 042 047 051 071 085 088 14 5 120 50cm 700 150 Abstract This ecological project was conducted for the purpose of understanding the present and the biological diversity