Sreepada K S, Naidu K N, Gururaj M E
Department of Post-graduate Studies in Zoology, University of Mysore, Manasagangotri, India.
Cytobios. 1993;75(300):49-57.
The karyotypes of Hipposideros speroris, H. pomona, H. lankadiva, H. ceneraceus, H. ater and H. fulvus were analysed using conventional and banding technqiues. All six species exhibited the same 2n (32) and FN (60). The genus is remarkable for its apparent karyotypic stability. These species have only biarmed autosomes, one of which is a submetacentric marker chromosome with an achromatic gap. G-banded autosomes showed that most have remained conservative in the course of evolution of the species. Structural changes seemed to have occurred more frequently in the sex elements of the karyotypes rather than in the autosomes, and non-Robertsonian changes had an appreciable role to play in karyotypic evolution. This trend is probably dictated by the maximization of the biarmed condition which reflects the formation of stabilised linkage groups from the inception of the genus. It is proposed that the ancestral lineage of the genus Hipposideros was derived from a Rhinolophoid ancester whose karyotype was akin to Rhinolophus luctus.
使用常规和显带技术分析了斯氏菊头蝠、棕果蝠、兰卡菊头蝠、灰菊头蝠、黑菊头蝠和黄菊头蝠的核型。所有六个物种均呈现相同的2n（32）和FN（60）。该属以其明显的核型稳定性而著称。这些物种只有双臂常染色体，其中一条是带有无色间隙的亚中着丝粒标记染色体。G带常染色体显示，大多数在物种进化过程中保持保守。结构变化似乎在核型的性染色体成分中比在常染色体中更频繁地发生，并且非罗伯逊变化在核型进化中发挥了重要作用。这种趋势可能是由双臂状态的最大化所决定的，这反映了从该属起源时起稳定连锁群的形成。有人提出，菊头蝠属的祖先谱系源自一种与鲁氏菊头蝠核型相似的菊头蝠科祖先。
