Nally Ralph C Mac
Department of Zoology, University of Melbourne, 3052, Parkville, Victoria, Australia.
Oecologia. 1979 Oct;42(3):293-306. doi: 10.1007/BF00346595.
The socio-spatial organisation of two sympatric species of anurans was investigated by analyses of the spatial and temporal structure of breeding assemblages. Ranidella signifera breeds earlier in the year than its congener, R. parinsignifera, though there is an overlap of 6 to 8 weeks. Males of both species show high affinities for discrete spatial locations (preferred calling stations). These stations are regularly-spaced, and temporally-stable. Satellite behaviour occurs, though most satellites are past or future residential males. There appears to be a spatial-energetic limit to the number of calling residents of both species that a pond can support. There is no differentiation of calling sites between the two species, and the males of R. parinsignifera appear to displace their congeners from the preferred stations located on the land/water interface of ponds. The breeding season of R. signifera in sympatry is abbreviated relative to nearby (≃20 km) allopatric localities. The breeding seasons of conspecific males and females are well-synchronised, though the ratio of males to females is high early in the breeding season.
通过对繁殖群体的空间和时间结构进行分析，研究了两种同域分布的无尾两栖动物的社会空间组织。指名姬蛙（Ranidella signifera）比其同属物种副指名姬蛙（R. parinsignifera）更早繁殖，尽管二者有6至8周的重叠期。两个物种的雄性对离散的空间位置（偏好的鸣叫站）都表现出高度的亲和力。这些站点分布规律，且在时间上稳定。卫星行为存在，不过大多数卫星是过去或未来的定居雄性。对于一个池塘能够容纳的两个物种鸣叫定居者的数量，似乎存在一个空间能量限制。两个物种之间的鸣叫地点没有差异，副指名姬蛙的雄性似乎会将其同属物种从位于池塘陆地/水面交界处的偏好站点赶走。相对于附近（约20公里）的异域分布地区，同域分布的指名姬蛙的繁殖季节缩短。同种雄性和雌性的繁殖季节同步良好，不过在繁殖季节早期雄性与雌性的比例较高。
