Selander r k (8 risultati)
Editore: American Museum of Natural History, 1963
- Brossura
Da: Darkleaf Books, Arrington, VA, U.S.A.Darkleaf Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Come nuovo
EUR 8,96
EUR 4,35 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Paperback. Condizione: As New. Bulletin of the American Museum of Natural History. Volume 124, article 6, pp. 213-274. As new in original blue wrappers.
Editore: The Condor, 1961
- Brossura
- Periodico
Da: Larry W Price Books, Portland, OR, U.S.A.Larry W Price Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 13,42
EUR 4,33 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Pamphlet. Condizione: Very Good. Vol 63, No 1, pp. 29-86, Photoss, Extracted from orig vol then Recased in Orig Journal Covers (Pamphlet), VG.
Da: Rare Book Exchange, Mastic Beach, NY, U.S.A.Rare Book Exchange
Contatta il venditoreVenditore con 2 stelleCondizione: Usato
EUR 3,60
EUR 4,33 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
4873.SELANDER R.K. 1962 VERTEBRATES FROM THE BARRIER ISLANDS OF TAMAULIPAS, MEXICO.308-345PP. ILLUSTRATED. WRAPPERS. VERY GOOD CONDITION. (SNAKE-35).
Editore: American Museum of Natural History, 1963
- Brossura
- Prima edizione
Da: Wildside Books, Eastbourne, Regno UnitoWildside Books
Contatta il venditoreVenditore con 5 stelleMembro dell’associazione: PBFA
Condizione: Usato - Molto buono
EUR 12,06
EUR 14,05 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Soft cover. Condizione: Very Good. No Jacket. 1st Edition. Small 4to, pages 217 - 273, 4 black and white plates, 17 figures, blue wrappers with some light wear, contents are fine. Bulletin of the American Museum of Natural History Volume 124, Article 6.
- Brossura
Da: Xerxes Fine and Rare Books and Documents, Glen Head, NY, U.S.A.Xerxes Fine and Rare Books and Documents
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Ottimo
EUR 22,51
EUR 5,20 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Condizione: Fine. NY 1963. Bulletin of American Museum of Natural History Vol. 124, Article 6. 4to., pp.217-273, printed wraps. Fine.
Da: ConchBooks, Harxheim, GermaniaConchBooks
Contatta il venditoreVenditore con 4 stelleCondizione: Usato
EUR 5,75
EUR 24,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Electrophoretic studies of genetic variation in 14 species of terrestrial slugs of the families Arionidae, Philomycidae, and Limacidae in the eastern United States indicate that self-fertilization, either facultative or obligatory, is the normal breeding system in six of the species. Three of these six species are single monogen…ic strains; one consists of three monogenic strains; one includes a highly heterozygous form and two monogenic strains; and one has a moderate amount of polymorphism but little heterozygosity and strong linkage disequilibrium. Eight species are outcrossers, being highly polymorphic and panmictic within local populations. Niche breadth, assessed in terms of extent of geographic distribution and variety of habitats occupied and measured on an experimental plot of woodland, is greater in some monogenic strains than in highly heterozygous, outcrossing species. Colonizing success apparently is independent of the amount of genetic variation carried by a species. 5 pp., 4.
Da: ConchBooks, Harxheim, GermaniaConchBooks
Contatta il venditoreVenditore con 4 stelleCondizione: Usato
EUR 5,75
EUR 24,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Microgeographic population structure in the land snail Helix aspersa was analyzed by determining genotypes at five enzyme loci for 2,218 individuals from 43 estivating colonies on two adjacent 10-acre blocks in Bryan, Texas. An analysis of genotypic proportions yielded no evidence of inbreeding within colonies; but allele freque…ncies for colonies on the same block were heterogeneous, and there were major differences in mean allele frequencies between blocks. The mean standardized variance (FST) for colonies on a block was .03. Seven demes occupying areas of approximately 500 square meters were identified on each block; the harmonic mean size of the demes was 15 individuals. Deme size in Helix apparently is much smaller than in Cepaea. Variance in allele frequencies among small colonies exceeded that among large colonies, as expected if random genetic drift is a significant factor affecting population structure. An examination of gross features of the habitat types of the colonies yielded no evidence of associations with allele frequencies. Nonrandom features of intercolony variation on blocks could reflect either selection in a spatially heterogeneous environment or incidents of drift occurring in the demographic history of the populations. From the standpoint of genic variation, as indexed by electrophoretically demonstrable protein variation, colonies of Helix on a single block are as heterogeneous as regional populations of Drosophila pseudoobscura in the United States; and the degree of genic differentiation of Helix populations in California may be equivalent to that of the human species as a whole. 7 pp., 4 figs, gr. 8.
Da: Backhuys Biological Books, Kerkwerve, Paesi BassiBackhuys Biological Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato
EUR 22,00
EUR 18,75 spedizioneSpedito da Paesi Bassi a U.S.A.Quantità: 1 disponibili
, 22 pls, original wrps 0.0.
