6043

• UCREFRP Catalog Number: 6043
• Author: Desert Fishes Council ‎(Edwin Pister, e.
• Title: A Summary of the Proceeding of the Tenth Annual Symposium.
• USFW Year: 1978.
• USFW - Doc Type: November 16-18, 1978.
• Copyright Material: NO

35
REPRODUCTIVE PERFORMANCE OF THE DESERT PUPFISH (CYPRINODON N.
NEVADENSIS IN RELATION TO SALINITY.
Shelby D. Gerking and Raymond M. Lee, Arizona State University,
Tempe.
The reproductive performance of the desert pupfish,
Cyprinodon n. nevadensis, was tested for relationship with
salinity. Breeding pairs were exposed to a range from nearly
00 /oo to over 400/oo salinity. In the reproductive parameters
utilized; eggs per gram body weight per day, eggs per spawning
and the %hatch, the pupfish reproduced best at 10°/oo and
gradually below 100 /oo, producing a plateau of statistically
equivalent reproduction from .3 to 200 /oo.
This species of pupfish exhibited an upper salinity
tolerance of 530 /oo and a lower limit of less than 0.10/00,
in a 96 hour LD-50 test.
t