+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Phenotypic variation along a cline in allozyme and karyotype frequencies, and its relationship with habitat, in the dog-whelk Nucella lapillus, L

, : Phenotypic variation along a cline in allozyme and karyotype frequencies, and its relationship with habitat, in the dog-whelk Nucella lapillus, L. Biological Journal Of The Linnean Society. 53(3): 255-275

The dog-whelk Nucella lapillus exhibits a number of phenotypic variations and genetic polymorphisms which correlate with habitat-specific environmental pressures, especially those associated with wave action and temperature. This study investigates the relationship between genetic composition (karyotypic and electrophoretic variation) and phenotypic differentiation in N. lapillus sampled at 15 points along an 8 km stretch of coastline. Coincident clinal variation in gene frequencies and shell shape is described; they covary with differences in karyotype and also with growth. Laboratory-reared young show that differences in phenotype (shell shape and growth) are inherited. Experimental evidence is presented that specific shell shapes are adaptive under conditions of thermal stress. Together with the well-established correlations between shell shape and shore exposure, this association provides an argument for a relationship between genetic composition, phenotype and habitat in this species.


DOI: 10.1111/j.1095-8312.1994.tb01012.x

Other references

Vinogradov, V.M., 1972: The accuracy of automatic measurement of roundwood by sectional formulae. Quantitative and qualitative estimates were obtained of the accuracy of automatic measurement and calculation of log volume by sectional formulae, by comparison with the volumes of truncated cones, cylinders, paraboloids and neiloids. Results indi...

Fukuda I., 1974: Distributions and evolutionary significance of chromosome variations within the american and japanese trillium spp liliaceae. Int Congr Syst Evol Biol First International Congress Of Systematic And Evolutionary Biology Abstracts, University Of Colorado, Boulder, Colorado, U S A 228p 21

Metz, J.E.; Brackett, W.W., 1994: Performance of a glass ionomer luting cement over 8 years in a general practice. For this report, 1230 cast restorations luted with a glass ionomer cement were followed up for 8 years. The results show an absence of secondary caries, 99% retention of restorations, and a 4% incidence of irreversible pulpitis. The infrequent the...

Adams, B.N.; Lekovic, J.P.; Robinson, S., 2014: Clostridium perfringens sepsis following a molar pregnancy. Clostridium perfringens sepsis is rare since the legalization of abortion in 1973. This is a 49 year old female who developed clostridial sepsis after suction dilation and curettage for a molar pregnancy. A hysterectomy was performed after prompt...

L'italien J.J., 1988: Solid phase method approaches to protein microsequence analysis. Bhown, A S (Ed ) Protein/Peptide Sequence Analysis: Current Methodologies Ix+241p Crc Press, Inc : Boca Raton, Florida, Usa Illus 73-86

Milman, N.; Graudal, N., 1984: Serum ferritin in acute viral hepatitis. Serum ferritin and biochemical liver tests (serum bilirubin, serum aspartate transaminase, serum .gamma.-glutamyl transpeptidase (.gamma.-GT), and serum alkaline phosphatase) were recorded at regular intervals from admission to recovery in 6 patie...

Watson, D.J.; Watson, M.A., 1953: Comparative physiological studies on the growth of field crops. III. The effect of infection with Beet yellows and Beet mosaic viruses on the growth and yield of the Sugar-Beet root crop. Further studies at Rothamsted Experimental Station demonstrated that infection with beet yellows virus depressed the dry matter yield of sugar beet plants by reducing leaf area and net assimilation rate (mean rate of dry matter increase per unit l...

Whitfield, A.G., 1969: Women medical graduates of the University of Birmingham 1959-63. British Medical Journal 3(5661): 44-46

Carneiro, J.F., 1966: The problem of eliminators of non-viable bacilli. El Torax 15(1): 8-13

Karsten, G.R.; Drake, H.L., 1995: Comparative assessment of the aerobic and anaerobic microfloras of earthworm guts and forest soils. Aerobic and anaerobic microbial potentials of guts from earthworms (Lumbricus rubellus Hoffmeister and Octolasium lacteum (Oerl.)) collected from a beech forest were evaluated. On the basis of enumeration studies, microbes capable of growth under...