Matches in SemOpenAlex for { <https://semopenalex.org/work/W2321805328> ?p ?o ?g. }
Showing items 1 to 42 of
42
with 100 items per page.
- W2321805328 endingPage "102" @default.
- W2321805328 startingPage "102" @default.
- W2321805328 abstract "PIERSOL (1907) was the first to describe the spawn of Ambystoma jeffersonianumn, showing that the egg-masses can readily be distinguished from those of A. maculatum. Smith (1911) compared the eggs of the two preceding species and those of A. tigrinum. Noble (1927), in considering the relation of breeding habits to phylogeny, states that both Allen and Bishop noted the males embracing the females. The reference is probably an error and should read, Wright and Allen. No one, however, has heretofore described the spermatophores of A. jeffersonianum. Smith (1911) considered the extremely early spawning season suggestive of an autumnal fertilization, while Piersol (1929), noticing that both sexes hide on land near the ponds during the day, suggested the likelihood of a terrestrial mating. In a previous paper (1930) the writer has reported field observations of seven embracing pairs of salamanders and the discovery of a wellformed spermatophore in the cloaca of a male A. Jeffersonianum, examined in the laboratory last year. No description of the spermatophore was given in that paper. During the present season observations have been made every night for a period of ten days after the appearance of the first A. jeffersonianum, and trips have been made to the ponds at frequent intervals since that time. The only mountain ponds which are readily accessible are near Woodward, Centre County, at an altitude of 1475 feet, and nearly thirty miles to the west of Bucknell University, Lewisburg, Pennsylvania, where the writer was located. The first individuals of A. jeffersonianum, in 1931, were seen on the night of March 25. At this-time a spermatophore, believed to have been deposited by this species, was found attached to a broken twig in about three inches of water close to the edge of the pond. About a dozen of the fifty odd salamanders seen were collected. On transferring them to an aquarium the next morning, two spermatophores were found in the collecting can. The next trip was made primarily to hunt spermatophores and an hour's intensive search revealed thirteen. On returning to the laboratory it was found that the salamanders collected on the first night had deposited five spermatophores in the aquarium. On the third night, March 27, fully twenty-five spermatophores were located in a second pond. On this night the first eggs were seen, and three females were observed in the process of egg-laying. The fact that no A. maculatum reached the ponds until the following night, March 28, as" @default.
- W2321805328 created "2016-06-24" @default.
- W2321805328 creator A5037000699 @default.
- W2321805328 date "1931-10-30" @default.
- W2321805328 modified "2023-09-25" @default.
- W2321805328 title "Observations on the Early Breeding Habits of Ambystoma jeffersonianum in Central Pennsylvania" @default.
- W2321805328 cites W2075729738 @default.
- W2321805328 cites W2160203399 @default.
- W2321805328 doi "https://doi.org/10.2307/1437330" @default.
- W2321805328 hasPublicationYear "1931" @default.
- W2321805328 type Work @default.
- W2321805328 sameAs 2321805328 @default.
- W2321805328 citedByCount "14" @default.
- W2321805328 crossrefType "journal-article" @default.
- W2321805328 hasAuthorship W2321805328A5037000699 @default.
- W2321805328 hasConcept C205649164 @default.
- W2321805328 hasConcept C86803240 @default.
- W2321805328 hasConcept C90856448 @default.
- W2321805328 hasConceptScore W2321805328C205649164 @default.
- W2321805328 hasConceptScore W2321805328C86803240 @default.
- W2321805328 hasConceptScore W2321805328C90856448 @default.
- W2321805328 hasIssue "3" @default.
- W2321805328 hasLocation W23218053281 @default.
- W2321805328 hasOpenAccess W2321805328 @default.
- W2321805328 hasPrimaryLocation W23218053281 @default.
- W2321805328 hasRelatedWork W1995175941 @default.
- W2321805328 hasRelatedWork W2046971378 @default.
- W2321805328 hasRelatedWork W2058747951 @default.
- W2321805328 hasRelatedWork W2072603467 @default.
- W2321805328 hasRelatedWork W2235026348 @default.
- W2321805328 hasRelatedWork W2320982316 @default.
- W2321805328 hasRelatedWork W2334504660 @default.
- W2321805328 hasRelatedWork W2746595942 @default.
- W2321805328 hasRelatedWork W2947686229 @default.
- W2321805328 hasRelatedWork W4240323839 @default.
- W2321805328 hasVolume "1931" @default.
- W2321805328 isParatext "false" @default.
- W2321805328 isRetracted "false" @default.
- W2321805328 magId "2321805328" @default.
- W2321805328 workType "article" @default.