Adaptation, speciation and evolution of marine animals from ecological and ethological perspectives

Research detail

Main materials are crabs (Crustacea: Decapoda: Brachyura). Crabs are originally adapted for life in the sea. However, some species of them invade the land and adapted for life on the land, morphologically, physiologically and behaviourally. The crabs of family Grapsidae, Ocypodidae and Mictyridae inhabit intertidal zone, in which the physical environmental factors change gradually. The semi-terrestrial crabs occupy intermediate between the marine and land crabs, considering to be suitable materials for understanding the process(es) of evolution for the life on the land from the sea. Now I study the process of adaptation, speciation and evolution of the crabs, through the ecological and ethological studies of semi-terrestrial crabs which inhabit various types of environmental factors.

Another materials are parasitic crabs which are members of family Pinnotheridae. Pinnotheridae consists of 252 species with various modes of life, i.e., free-living species and species living in and/or on the certain host species. I study the evolution and speciation of Pinnotheridae crabs, through the ecological and ethological studies of them.accumsan.

Publications

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.