Field notes, v1364
Page 107
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.