Two New Species of Freshwater Planarian (Platyhelminthes, Tricladida, Dugesiidae, Dugesia) from Southern China Exhibit Unusual Karyotypes, with a Discussion on Reproduction in Aneuploid Species

Table 2

Karyotype parameters (mean values and standard deviations) of Dugesia pendula.

Chromosome	Relative length	Arm ratio	Centromeric index	Chromosome type
1				m
2				m
3				m
4				m
5				m
6				m
7				m

m: metacentric.