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All Outputs (41)

An investigation of the genetic variation in four fucales species using cellulose acetate electrophoresis (2001)
Journal Article
Johnson, L. J., Scott, G. W., & Hull, S. L. (2001). An investigation of the genetic variation in four fucales species using cellulose acetate electrophoresis. Botanica Marina, 44(2), 119 - 123. https://doi.org/10.1515/bot.2001.016

A cellulose acetate electrophoresis method was used to examine allozyme variation both within and between three members of the genus Fucus: F. spiralis, F. vesiculosus and F. serratus and Ascophyllum nodosum. Samples of algae were collected from two... Read More about An investigation of the genetic variation in four fucales species using cellulose acetate electrophoresis.

Seasonal patterns in the reproductive activity of barnacle-dwelling littorinids (2000)
Journal Article
Johnson, L. J., Mill, P. J., Hull, S. L., Ducrotoy, P., & Caley, K. J. (2000). Seasonal patterns in the reproductive activity of barnacle-dwelling littorinids. Journal of the Marine Biological Association of the UK, 80(5), 821-826. https://doi.org/10.1017/s0025315400002794

The reproductive activity of a population of barnacle-dwelling littorinids at Peak Steel, on the north east coast of England, was investigated. Variation in the number of mature males and females, expressed as a percentage of the whole population, sh... Read More about Seasonal patterns in the reproductive activity of barnacle-dwelling littorinids.

The occurrence of abnormal embryos in two ovoviviparous barnacle-dwelling littorinids (2000)
Journal Article
Johnson, L. J., Mill, P. J., Hull, S. L., & Ducrotoy, J.-P. (2000). The occurrence of abnormal embryos in two ovoviviparous barnacle-dwelling littorinids. Journal of the Marine Biological Association of the UK, 80(3), 547-548. https://doi.org/10.1017/S0025315400002265

The occurrence of developmental abnormalities in two ovoviviparous littorinids (Littorina neglecta and a barnacle-dwelling form of L. saxatilis) inhabiting the barnacle zone at Peak Steel, Ravenscar on the north-east coast of England was investigated... Read More about The occurrence of abnormal embryos in two ovoviviparous barnacle-dwelling littorinids.

Clonal diversity and rockpool size in the marine ostracod, Callistocythere badia (2000)
Journal Article
Hull, S. L., & Rollinson, D. (2000). Clonal diversity and rockpool size in the marine ostracod, Callistocythere badia. Journal of the Marine Biological Association of the UK, 80(3), 551-552. https://doi.org/10.1017/S0025315400002289

Samples containing the marine ostracod Callistocythere badia were collected from upper shore rockpools on Filey Brigg, north-east England in order to examine the life cycle and genetic structure of the species. Reproduction occurred during spring/sum... Read More about Clonal diversity and rockpool size in the marine ostracod, Callistocythere badia.

Some implications of plant size in monotypic and polytypic populations of Fucus spiralis (2000)
Journal Article
Scott, G. W., Shaw, J. H., Hull, S. L., Pickaert, C., & Burlak, A. M. (2000). Some implications of plant size in monotypic and polytypic populations of Fucus spiralis. Journal of the Marine Biological Association of the UK, 80(2), 359-360. https://doi.org/10.1017/S0025315499001952

Plant size and aspects of the reproductive potential of monotypic and polytypic populations of Fucus spiralis and Fucus spiralis forma nanus were compared. The two formae were distinct, but the differences between them were less pronounced where they... Read More about Some implications of plant size in monotypic and polytypic populations of Fucus spiralis.

Sex-biased colour polymorphism in the marine ostracod Paradoxostoma variabile (Crustacea) (2000)
Journal Article
Hull, S. L., & Rollinson, D. (2000). Sex-biased colour polymorphism in the marine ostracod Paradoxostoma variabile (Crustacea). Journal of the Marine Biological Association of the UK, 80(1), 69-73. https://doi.org/10.1017/S0025315499001575

Samples of four species of algae were collected from three mid-shore pools on each of three shores on the north-east coast of England in order to describe colour polymorphism in the common intertidal ostracod Paradoxostoma variabile. Eight different... Read More about Sex-biased colour polymorphism in the marine ostracod Paradoxostoma variabile (Crustacea).

Comparison of tidepool phytal ostracod abundance and assemblage structure on three spatial scales (1999)
Journal Article
Hull, S. (1999). Comparison of tidepool phytal ostracod abundance and assemblage structure on three spatial scales. Marine ecology progress series, 182, 201-208. https://doi.org/10.3354/meps182201

Triplicate samples of Corallina officinalis L. were collected from either side of 5 large mid-shore pools on 3 shores in north-eastern England (Ravenscar, Filey Brigg and Flamborough) in order to examine the patterns of variation in abundance of diff... Read More about Comparison of tidepool phytal ostracod abundance and assemblage structure on three spatial scales.

Intertidal ostracod (Crustacea: Ostracoda) abundance and assemblage structure within and between four shores in north-east England (1999)
Journal Article
Hull, S. L. (1999). Intertidal ostracod (Crustacea: Ostracoda) abundance and assemblage structure within and between four shores in north-east England. Journal of the Marine Biological Association of the UK, 79(6), 1045-1052. https://doi.org/10.1017/S0025315499001289

Triplicate samples of rockpool algae were collected at each of three tidal elevations (upper, mid and low) from four shores on the north-east coast of England. Two moderately exposed (Ravenscar, the exposed shore at Filey Brigg), and two moderately s... Read More about Intertidal ostracod (Crustacea: Ostracoda) abundance and assemblage structure within and between four shores in north-east England.

Reproduction in four populations of brooding periwinkle (Littorina) at Ravenscar, North Yorkshire: adaptation to the local environment? (1999)
Journal Article
Hull, S. L., Grahame, J., & Mill, P. J. (1999). Reproduction in four populations of brooding periwinkle (Littorina) at Ravenscar, North Yorkshire: adaptation to the local environment?. Journal of the Marine Biological Association of the UK, 79(5), 891-898. https://doi.org/10.1017/s0025315499001058

The current study examines the reproductive patterns found within four ovoviviparous, brooding periwinkle populations on one shore in the north-east coast of England; the boulder dwelling populations Littorina saxatilis H (upper-shore form with thin... Read More about Reproduction in four populations of brooding periwinkle (Littorina) at Ravenscar, North Yorkshire: adaptation to the local environment?.

Assortative mating between two distinct micro-allopatric populations of Littorina saxatilis (Olivi) on the northeast coast of England (1998)
Journal Article
Hull, S. L. (1998). Assortative mating between two distinct micro-allopatric populations of Littorina saxatilis (Olivi) on the northeast coast of England. Hydrobiologia, 378(1/3), 79-88. https://doi.org/10.1023/a%3A1003237521419

Size assortative mating is a common invertebrate mating pattern and is usually accompanied by male and female sexual selection, and these three behaviours can contribute to reproductive isolation. Two distinct populations of the marine prosobranch Li... Read More about Assortative mating between two distinct micro-allopatric populations of Littorina saxatilis (Olivi) on the northeast coast of England.

Morphological divergence and evidence for reproductive isolation in Littorina saxatilis (Olivi) in northeast England (1996)
Journal Article
Hull, S., Grahame, J., & Mill, P. (1996). Morphological divergence and evidence for reproductive isolation in Littorina saxatilis (Olivi) in northeast England. Journal of Molluscan Studies, 62(1), 89-99. https://doi.org/10.1093/mollus/62.1.89

Current work at Old Peak (Ravenscar) on the northeast coast of England indicates that boulder-dwelling Lutonna saxatilis (Olvi) comprise at least two distinct forms, inhabiting high- and mid-shore boulders Using multivariate morphometrics we show tha... Read More about Morphological divergence and evidence for reproductive isolation in Littorina saxatilis (Olivi) in northeast England.

Littorina neglecta Bean: ecotype or species? (1995)
Journal Article
Grahame, J., Mill, P., Hull, S., & Caley, K. (1995). Littorina neglecta Bean: ecotype or species?. Journal of Natural History, 29(4), 887-899. https://doi.org/10.1080/00222939500770321

The taxonomic status of the littoral prosobranch Littorina neglecta has been investigated using animals from the northeast coast of England. Rough periwinkles were collected from barnacle-covered rock platforms near the northern (Ness Point) and sout... Read More about Littorina neglecta Bean: ecotype or species?.