Observations on the Range and Natural History of Monadenia setosa (Gastropoda: Pulmonata) in the Klamath Mountains, California, and the Taxonomy of Some Related Species

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Monadenia (Monadenia) setosa occurs mainly in riparian corridors with dense deciduous understory in Trinity County, California, U.S.A. Eastward, Monadenia (Shastelix) churchi, which within the range of M. setosa is restricted to open hillside habitats, occupies streamside habitats. On the north and west, M. setosa is replaced by Monadenia (Monadenia) fidelis, with a narrow zone of intergradation. One population, with a density of 0.11 snail/m2, was monitored over an annual cycle. Capture of marked individuals departed significantly from randomness. Widely varying population estimates reflected irregular snail activity patterns. Reproductive maturity apparently occurs at different seasons of the year; early growth is probably rapid, slowing as maturity is approached. Feeding occurs on the ground and on the trunks of trees with smooth bark. Both adults and juveniles occur on the ground and also climb vertical surfaces. Beetle and possible rodent predation occur; the latter may often be unsuccessful. Limited home ranges, probably related to available shelter, may exist. Monadenia (Monadenia) callipeplus of the Scott River drainage represents a parallel development of a bristly shell surface. Monadenia (Monadenia) scottiana is elevated from a subspecies of M. fidelis to species rank. Monadenia chaceana is restored to species rank and assigned to the subgenus Monadenia s.s. 14 pp., 8 figs, 4.…

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Détails bibliographiques

Titre
Observations on the Range and Natural History of Monadenia setosa (Gastropoda: Pulmonata) in the Klamath Mountains, California, and the Taxonomy of Some Related Species
Auteur
Roth, B. & Pressley, P. H.
Année de publication
1986

ConchBooks

Harxheim, Allemagne

Vendeur avec une évaluation de 4 étoiles

Vendeur AbeBooks depuis 1 mars 2007

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Founded in 1985 we are specialized in worldwide literature on Mollusca and marine invertebrates. Our publishing house has meanwhile published approximately 60 titles on that field of interest. We have stocks of most available international books on Malacology and a huge amount of antiquarian literature, even of the latter most titles are only available once.

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Weichtiere / Shells, Schnecken / Snails & Slugs, Muscheln / Bivalves, Tintenfische / Squids / Octopusses / Ammonites, Malacology, Conchology, Marine Biology