Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Howell, T.R.
1948
Wildcat Canyon
Tilden Park, Berkeley, Contra Costa
Alameda Co., Calif.
March 22. Single Batrachiceps attenuatus was revealed
by overturning a rock. In pool underneath bridge
several Triturus torosus were noted, two of which
were in amplexus. The cloaca of the male was much
expanded, projecting laterally beyond his body contours.
The stroking of the cloaca by the hind legs of
the male and rubbing of intermandibular gland on the
female's snout were noted. Another male approached
and poked the amplexed pair; the male of which
sculled off carrying the female beneath him. The
other male gave up. 2 females with distended abdomens
were clutching the same branch under water,
apparently about to lay. (2:30 PM; H2O temp.
about 10 C 3 inches below surface; air temp 13 C)
Several egg clusters were noted on a submerged
bike tire. The branch with the 2 females on it was
removed; one female dropped off. The other had
the branch tightly clasped in an inverted position;
with as yet unswelled cluster of eggs extruded
between the animal and the branch.
Hyla regilla were croaking in the same pond,
the croak is two-syllabled. A Rana aurora
was noted.
(Triturus torosus)
Several males attacked the same female at one
time out in the middle of the pond.
Nine egg clusters were found on the bike
tire.
In a small pool by the Clubhouse numerous
clusters of Hyla eggs were found in all stages
from "just laid" to hatching tad.