動物生態学
海産動物の適応と種分化に関して生態学ならびに行動学的研究

現在の研究内容

主な研究材料は甲殻綱短尾類である。海を起源とするカニ類の一部のグループは陸上に進出している。彼らは、形態、生理および行動を進化させることで陸上生活に適応している。潮間帯などを棲息場所とするカニ類は陸上生活への過渡期にあり，どの様な過程を経て陸上生活に適応してゆくのかを示す有効な材料と考えられる。様々な環境に棲息している半陸生カニ類の生態と環境との関係の解明を通して，カニ類の適応と種分化、ならびに進化の過程の解明をめざしている．ここ数年，旧世界（東南アジア）と新世界（中央アメリカ）のスナガニ科シオマネキ属のカニ類を材料として研究を進めている。

発表論文

Undap, S.L., Matsunaga, S., Honda, M., Khalil, F., Qui, X., Shimasaki, Y., Ando, H., Sato-Okoshi, W., Sunobe, T., Takeda, S., Munehara, H., and Y. Oshima (2013) Accumulation of organotins in wharf roach (Ligia exotica Roux) and its ability to serve as a biomonitoring species for coastal pollution. Ecotoxicology and Environmental Safety, Vol. 96: 75-79.

Takeda, S., and M. Washio (2013) Interspecific differences in the prevalence and abundance of the epizoic limpet Hipponix conicus among host gastropods. Journal of Molluscan Studies, Vol. 78, pp. 1-10.

Takeda, S. (2010) Habitat partitioning between prey soldier crab Mictyris brevidactylus and predator fiddler crab Uca perplexa. Journal of Experimental Marine Biology and Ecology, Vol. 390, pp. 160-168.

Takeda, S.(2008) Mechanism maintaining dense beds of the sand dollar Scaphechinus mirabilis in northern Japan. Journal of Experimental Marine Biology and Ecology, Vol. 363, pp. 21-27.

Takeda, S. (2006) Behavioural evidence for body colour signaling in the fiddler crab Uca perplexa (Bracyura: Ocypodidae). Journal of Experimental Marine Biology and Ecology, Vol. 330, pp. 521-527.

Takeda, S. (2005) Sexual differences in behaviour during the breeding season in the soldier crab (Mictyris brevidactylus). Journal of Zoology (London), Vol. 266, pp. 197-204.

Takeda, S., S. Poovachiranon, and M. Murai (2004) Adaptations for feeding on rock surfaces and sandy sediment by the fiddler crabs (Brachyura: Ocypodidae) Uca tetragonon (Herbst, 1790) and Uca vocans (Linnaeus, 1758). Hydrobiologia, Vol. 528, pp. 87-97.

Takeda, S., and M. Murai (2004) Microhabitat use by the soldier crab Mictyris brevidactylus (Brachyura: Mictyridae): interchangeability of the surface feeding and subsurface feeding through burrow structure alternation. Journal of Crustacean Biology, Vol. 24, pp. 327-339.

Takeda, S. (2003) Mass wandering in the reproductive season by the fiddler crab Uca perplexa. Journal of Crustacean Biology, Vol. 23, pp. 723-728.

Takeda, S., and M. Murai (2003) Morphological and behavioural adaptations to the rocky substratum by the fiddler crab, Uca panamensis (Stimpson, 1859): preference for feeding substratum and feeding mechanism. Journal of Experimental Marine Biology and Ecology, Vol. 287, pp. 179-191.

Matsumasa, M., S. Kikuchi, S. Takeda, S. Poovachiranon, H. S. Yong, and M. Murai (2001) Blood osmoregulation and ultrastructure of the gas windows ('Tympana') of intertidal ocypodid crabs: Dotilla vs. Scopimera. Benthos Research, No. 56, pp. 47-55.

Takeda, S., Y. Shimokawa, and O. Murakami (1998) Daily activities of the barnacle, Semibalanus cariosus (Pallas). Crustaceana, Vol. 71, pp. 299-311.

Takeda, S., S. Tamura, and M. Washio (1997) Relationship between the pea crab, Pinnixa tumida, and its endobenthic holothurian host Paracaudina chilensis. Marine Ecology Progress Series, Vol. 149, pp. 143-154.

Takeda, S., M. Matsumasa, S. Kikuchi, S. Poovachiranon, and M. Murai (1996) Variation in the branchial formula of semiterrestrial crabs (Decapoda: Brachyura: Grapsidae and Ocypodidae) in relation to physiological adaptations to the environment. Journal of Crustacean Biology, Vol. 16, pp. 472-486.

Takeda, S., M. Matsumasa, H. S. Yong, and M. Murai (1996) "Igloo" construction by the ocypodid crab, Dotilla myctiroides (Milne-Edwards) (Crustacea; Brachyura): the role of an air chamber when burrowing in a saturated sandy substratum. Journal of Experimental Marine Biology and Ecology, Vol. 198, pp. 237-247.

Takeda, S., and Y. Kurihara (1994) Preliminary study of management of red tide water by the filter feeder Mytilus edulis galloprovincialis. Marine Pollution Bulletin, Vol. 28, pp. 662-667.

Takeda, S., and M. Murai (1993) Asymmetry in male fiddler crabs is related to the basic pattern of claw-waving display. Biological Bulletin (Woods Hole), Vol. 184, pp. 203-208.

Matsumasa, M., S. Takeda, S. Poovachiranon, and M. Murai (1992) Distribution and shape of Dotilla myctiroides (Brachyura: Ocypodidae) burrow in the seagrass Enhalus acoroides zone. Benthos Research, No. 43, pp. 1-9.

Kurihara, Y., T. Hosoda, and S. Takeda. (1989) Factors affecting the burrowing behaviour of Helice tridens (Grapsidae) and Macrophthalmus japonicus (Ocypodidae) in an estuary of northeast Japan. Mar. Biol. 101: 153-157.