1. From the Editor

   • Kazuki Tsuji

   Editorial 01 February 2014 Pages: 1 - 2

2. Distribution of foundress group size in Ropalidia fasciata and R. plebeiana (Hymenoptera: Vespidae): an analysis using zero-truncated distribution models

   • Yosiaki Itô
   • Sôichi Yamane
   • Koji Tsuchida

   Article 01 February 2014 Pages: 3 - 7

3. Alternative mating tactics of the gobiid fish Bathygobius fuscus

   • Masanori Taru
   • Takeshi Kanda
   • Tomoki Sunobe

   Article 01 February 2014 Pages: 9 - 12

4. Mating success in the spittlebug Cercopis sanguinolenta (Scopoli, 1763) (Homoptera, Cercopidae): the role of body size and mobility

   • Robert Biedermann

   Article 01 February 2014 Pages: 13 - 18

5. Species specificity in settling-plant selection by foundress ant queens in Macaranga–Crematogaster myrmecophytism in a Bornean dipterocarp forest

   • Kaori Murase
   • Takao Itioka
   • Takao Itino

   Article 01 February 2014 Pages: 19 - 24

6. Field bioassays show heterospecific mating preference asymmetry between hybridizing North American Papilio butterfly species (Lepidoptera: Papilionidae)

   • Mark D. Deering
   • Mark J. Scriber

   Article 01 February 2014 Pages: 25 - 33

7. Male secondary sexual traits are hydrodynamic devices for enhancing swimming performance in a monogamous filefish Paramonacanthus japonicus

   • Tomoyuki Kokita
   • Taketo Mizota

   Article 01 February 2014 Pages: 35 - 42

8. Effects of topography on dispersal of black-billed magpie Pica pica sericea revealed by population genetic analysis

   • Soo Eo
   • Jung Hyun
   • Kazuhiro Eguchi

   Article 01 February 2014 Pages: 43 - 47

9. Sex and individual differences in foraging behavior of Japanese cormorants in years of different prey availability

   • Koji Ishikawa
   • Yutaka Watanuki

   Article 01 February 2014 Pages: 49 - 54

10. Characteristics of social interaction between unfamiliar male rats (Rattus norvegicus): comparison of juvenile and adult stages

    • Yuko Yamada-Haga

    Article 01 February 2014 Pages: 55 - 62

11. Sexual dominance in hermit crab shell fights: asymmetries in owner–intruder status, crab size, and resource value between sexes

    • Kenji Yoshino
    • Seiji Goshima

    Article 01 February 2014 Pages: 63 - 69

12. Seasonal changes in the territorial behaviour of the satyrine butterfly Lethe diana are mediated by temperature

    • Jun-Ya Ide

    Article 01 February 2014 Pages: 71 - 78