C. cyanurus, C. orientalis differences

[TJ]

I've acquired a report that notes some interesting differences between C.orientalis and C.cyanarus. It's mostly in Chinese, but here's some of what I've been able to decipher using my knowledge of Japanese. It's from a table entitled "Interspecific difference between Cynops orientalis and C.cyanurus".

"FERTILITY":

C.o -- several months
C.c -- 14 days

The brief English abstract of this report explains with regard to C.orientalis, "After taking sperm, the female can spawn normally in 65 days at least, which differs from Cynops cyanurus (14 days)."

"AVERAGE HATCHING RATE":

C.o -- 74.1% (46.4-86.8%)
C.c -- about 36.3%

"SPAWNING PERIOD"

C.o -- mid-March to mid-July
C.c -- late April to early October

C.o -- 79.9 +/- 19.9 (33-111) d
C.c -- 123.5 +/- 25.5 (43-150) d

I've got to be careful not to spread misinformation, but it seems the following figures are for size and weight at metamorphosis:

C.o -- 31.8 mm (25.6-43.4)
C.c -- 46.6 mm (37-60)

C.o -- 0.26 g (0.20-0.45)
C.c -- 0.56 g (0.3-1.1)

The table also compares spermatophore shape and sex ratio.

Source:

Studies on the Breeding Ecology of Cynops orientalis
By Yang Daode and Shen Youhui
Zoological Research 14 (3): 215-220
1993

I don't know if this is new info to cyanurus keepers or not, but I'll scan and post the table later

(Message edited by TJ on April 14, 2004)

 

[john]

Tim, interesting information there. Your skills as a linguist are only exceeded by your willingness to share

.

 

[TJ]

Thanks, though I'm storing as well as sharing

Here's the actual table:

Maybe some of our other members can help out with the Chinese

 

[john]

It's all Greek to me. Well no, it's not - I could actually make something out of Greek. Hey, I know what a mm is

.

 

[TJ]

Here's the English abstract:

 

[TJ]

I may be wrong, but this is also what it seems to say:

TIME REQUIRED FOR EGGS TO HATCH:

C.o -- 13-24 days
C.c -- about 16.5 days

TIME REQUIRED FROM HATCHING UNTIL METAMORPHOSIS:

C.o -- 50-80 days
C.c -- more or less 111 days

SEX RATIO:

C.o -- one female for every 2.3 males
C.c -- 1.2 females for every male

I may be way off here but it seems also say:

AVERAGE # OF EGGS LAID PER DAY:

C.o -- 2.8 (1-18)
C.c -- 4 (1-24)

AVERAGE # OF EGGS LAID PER YEAR:

C.o -- 95.8 +/- 61.8 (10-263)
C.c -- 226.5 +/- 166.5 (10-668)

 

[nate]

Very interesting info Tim, thanks so much for posting that.

 

[ralf]

I chime in