[SpA] Sex in the Community: Reproductive Interference and its Implications
Sunday, 11 October 9:00–12:00 room A (Center for Academic and Cultural Exchange)
Organizers: Suzuki Noriyuki (Rissho Univ.) & Daisuke Kyogoku (Kyoto Univ.)
Language: English

Reproductive interference has received attention in recent years as an important interspecific interaction that can cause species exclusion, niche partitioning, and character displacement. Due to its potential generality across animal and plant taxa, it should be further linked with diverse phenomena in population ecology and evolutionary biology, such as eco-evolutionary dynamics and adaptive radiation. Here, in this symposium, young ecologists introduce the recent advances on the cause and consequence of reproductive interference. Notably, we arranged commentators to each speaker to provide the renewed attention to this area and to enhance discussion. By doing so, we would like to clarify the future perspective on reproductive interference and its related areas.


[SpA-1] Asymmetry in species recognition and reproductive interactions in a hybridizing avian species pair
David Wheatcroft (Uppsala Univ)

[SpA-2] The evolutionary ecology of niche separation in Leptidea butterflies
Magne Friberg (Uppsala Univ)

[SpA-3] Reproductive character displacement by the evolution of female mate choice
Ryo Yamaguchi (Kyushu Univ)

[SpA-4] The promise of eco-evolutionary perspective: evolutionary rescue associated with reproductive character displacement
Daisuke Kyogoku (Kyoto Univ)

Toshitaka Suzuki (SOKENDAI)    
Suzuki Noriyuki (Rissho Univ) 
Kotaro Kagawa (Univ of Tokyo)
Minoru Kasada (Univ of Tokyo)   


[SpB] Biogeography: spatial partitioning of diversifying lineages
Monday, 12 October 9:00–12:00 room A (Center for Academic and Cultural Exchange)
Organizers: Takayoshi Nishida (Univ.of Shiga Pref.)
Language: English

Theory of Island Biogeography (TIB) by MacArthur and Wilson (1967) was a starting point of modern ecological biogeography. Until their seminal study, biogeography had been descriptive studies largely based on phylogeny, dispersal history and geographic barriers. The largest contribution of TIB was a proposal of a general explanatory framework for quantitative studies of biogeography in general. It should be noted, however, r-K paradigm, the major assumptions of TIB, had gradually lost its heuristic value both theoretically and empirically during 1980s to account for colonization success and extinction. As a result, the status quo of TIB is just a descriptive model, in which balance of the immigration and extinction rate determine the species equilibrium. In this symposium we aim to re-establish ecological biogeography by incorporating key ecological interactions to understand from a small pattern between closely related species or populations to global biodiversity patterns and, hopefully, we would provide simple and testable predictions for future study of biogeography.


[SpB-1] Incorporating key ecological interactions into biogeography: a simple rule accounting for “primary effect”
Takayoshi Nishida, Takehiro Yoshizaki & Koh-ichi Takakura (University of Shiga Pref.) 

[SpB-2] Island biogeography of invasive vs. native plants
Koh-ichi Takakura (University of Shiga Pref.)

[SpB-3] Biogeographic variation in reproductive traits and development of cryptic reproductive isolation between local populations in a grasshopper, Podisma sapporensis
Yoshikazu Sugano, Kaori Tuchiya-Suzuki, and ○Shin-ichi Akimoto (Hokkaido University)

[SpB-4] Studies of ant invasion should more seriously consider the explicit link to fundamental theories of ecology and evolution.
Kazuki Tsuji (University of the Ryukyus)

[SpB-5] Global patterns of diversity and diversification rate in ants
Evan Economo (Okinawa Institute of Science and Technology)