All Outputs (93)

A resolution for the coiling direction paradox in Neogloboquadrina pachyderma (2006)
Journal Article

We present new data on genotypic differences and biogeographic distribution of coiling types in the living planktonic foraminiferal morphospecies Neogloboquadrina pachyderma. The genetic evidence demonstrates that coiling direction in N. pachyderma i... Read More about A resolution for the coiling direction paradox in Neogloboquadrina pachyderma.

Evolutionary relationships among the Pulmonate land snails and slugs (Pulmonata, Stylommatophora) (2006)
Journal Article

We have incorporated an additional 56 species of land snails and slugs in our ribosomal (r) RNA molecular phylogeny. The new taxa include representatives of several important groups. The molecular tree now includes 160 species of stylommatophoran lan... Read More about Evolutionary relationships among the Pulmonate land snails and slugs (Pulmonata, Stylommatophora).

The coiling direction paradox in Neogloboquadrina pachyderma (2006)
Journal Article

Sex and darts in slugs and snails (Mollusca: Gastropoda: Stylommatophora) (2005)
Journal Article

In the final stages of an elaborate courtship, many slugs and snails shoot calcareous 'love' darts into each other. While darts improve the reproductive success of the shooter, by promoting sperm survival in the recipient, it is unclear why some spec... Read More about Sex and darts in slugs and snails (Mollusca: Gastropoda: Stylommatophora).

Molecular evidence links cryptic diversification in polar planktonic protists to Quaternary climate dynamics (2004)
Journal Article

It is unknown how pelagic marine protists undergo diversification and speciation. Superficially, the open ocean appears homogeneous, with few clear barriers to gene flow, allowing extensive, even global, dispersal. Yet, despite the apparent lack of o... Read More about Molecular evidence links cryptic diversification in polar planktonic protists to Quaternary climate dynamics.

Seasonal distribution of genetic types of planktonic foraminifer morphospecies in the Santa Barbara channel and its paleoceanographic implications (2003)
Journal Article

We present data on the temporal distribution of planktonic foraminifer genotypes (small subunit (SSU) ribosomal (r) RNA gene) and morphospecies (sediment traps) collected during 1999 in the Santa Barbara Channel. The sampling was undertaken with spec... Read More about Seasonal distribution of genetic types of planktonic foraminifer morphospecies in the Santa Barbara channel and its paleoceanographic implications.

Fossilized records of past seas (2002)
Journal Article

The planktonic foraminifera are an important part of the zooplankton, and their calcific shells, preserved in the ocean sediments, form one of the most complete fossil records on earth. Chris Wade and Kate Darling explain how they can be used as indi... Read More about Fossilized records of past seas.

Inferring the phylogeny of disjunct populations of the azure-winged magpie Cyanopica cyanus from mitochondrial control region sequences (2002)
Journal Article

The azure-winged magpie (AWM), Cyanopica cyanus, is found in Asia and Iberia. This remarkable disjunct distribution has been variously explained by either the sixteenth-century introduction of birds into Iberia from the Far East, or by the loss of in... Read More about Inferring the phylogeny of disjunct populations of the azure-winged magpie Cyanopica cyanus from mitochondrial control region sequences.

Inferring the phylogeny of disjunct populations of the Azure-winged Magpie from a mitochondrial DNA sequence (2002)
Journal Article

The azure–winged magpie (AWM), Cyanopica cyanus, is found in Asia and Iberia. This remarkable disjunct distribution has been variously explained by either the sixteenth–century introduction of birds into Iberia from the Far East, or by the loss of in... Read More about Inferring the phylogeny of disjunct populations of the Azure-winged Magpie from a mitochondrial DNA sequence.

Genotypic variability in subarctic Atlantic planktic foraminifera (2001)
Journal Article

Specimens of the planktic foraminiferal morphospecies, Globigerina bulloides, Turborotalita quinqueloba, Neogloboquadrina pachyderma (dextral) and Globigerinita uvula, were collected along a subarctic Atlantic transect. Partial sequences of the small... Read More about Genotypic variability in subarctic Atlantic planktic foraminifera.

Patterns of genetic variation in pacific island land snails: The distribution of cytochrome b lineages among Society Island Partula (2001)
Journal Article

The radiation of Partula land snails has produced a large array of distinct morphological, ecological and behavioural types occupying many tropical volcanic islands in the Pacific Ocean. Within the Society Islands of French Polynesia, the mode of evo... Read More about Patterns of genetic variation in pacific island land snails: The distribution of cytochrome b lineages among Society Island Partula.

A phylogeny of the land snails (Gastropoda: Pulmonata) (2001)
Journal Article

We have undertaken the first large-scale molecular phylogenetic analysis of the Stylommatophora. Sequences of the ribosomal RNA gene-cluster were examined in 104 species of snails and slugs from 50 families, encompassing all the currently recognized... Read More about A phylogeny of the land snails (Gastropoda: Pulmonata).

The Stylommatophora - a molecular phylogeny (2001)
Journal Article

Molecular evolutionary relationships between partulid land snails of the Pacific (2001)
Journal Article

Adaptive radiation of partulid land snails in the tropical Pacific has produced an extraordinary array of distinctive morphological, ecological and behavioural types. Here we use part of the nuclear ribosomal RNA gene cluster to investigate the relat... Read More about Molecular evolutionary relationships between partulid land snails of the Pacific.

Evolution within the gastropod molluscs; using the ribosomal RNA gene-cluster as an indicator of phylogenetic relationships (2000)
Journal Article

Molecular evidence for genetic mixing of Arctic and Antarctic subpolar populations of planktonic foraminifers (2000)
Journal Article

Bipolarity, the presence of a species in the high latitudes separated by a gap in distribution across the tropics, is a well-known pattern of global species distribution. But the question of whether bipolar species have evolved independently at the p... Read More about Molecular evidence for genetic mixing of Arctic and Antarctic subpolar populations of planktonic foraminifers.

Genetic heterogeneity of HIV type 1 subtypes in Kimpese, rural democratic republic of congo (1999)
Journal Article

A relatively low and stable seroprevalence of HIV-1 was previously reported among pregnant women attending for antenatal care between 1988 and 1993 in Kimpese, a rural town in the Democratic Republic of Congo (DRC, formerly Zaire). To characterize th... Read More about Genetic heterogeneity of HIV type 1 subtypes in Kimpese, rural democratic republic of congo.

The diversity of distribution of modern planktic foraminiferal small subunit ribosomal RNA genotypes and their potential as tracers of present and past ocean circulations (1999)
Journal Article

Molecular phylogenetic analysis of the small subunit ribosomal RNA gene of planktic spinose foraminifers shows that morphospecies may represent clusters of different and often highly divergent genotypes. In some cases the level of divergence may just... Read More about The diversity of distribution of modern planktic foraminiferal small subunit ribosomal RNA genotypes and their potential as tracers of present and past ocean circulations.

Morphotypic and genotypic variability in subarctic planktic foraminifera (1998)
Conference Proceeding

Towards a Molecular Phylogeny for the Pulmonate Land Snails (1998)
Conference Proceeding