All Outputs (83)

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.

Analysis of human immunodeficiency virus type 1 env and gag sequence variants derived from a mother and two vertically infected children provides evidence for the transmission of multiple sequence variants (1998)
Journal Article

In order to investigate the transmission of human immunodeficiency virus type 1 (HIV-1) from mother-to-child we have examined serial plasma RNA samples obtained from a mother over an eight year period spanning four pregnancies. Child 1 and 2 (born Ja... Read More about Analysis of human immunodeficiency virus type 1 env and gag sequence variants derived from a mother and two vertically infected children provides evidence for the transmission of multiple sequence variants.

The molecular epidemiology of human immunodeficiency virus type 1 in six cities in Britain and Ireland (1997)
Journal Article

We have sequenced the p17 coding regions of the gag gene from 211 patients infected either through injecting drug use (IDU) or by sexual intercourse between men from six cities in Scotland, N. England, N. Ireland, and the Republic of Ireland. All seq... Read More about The molecular epidemiology of human immunodeficiency virus type 1 in six cities in Britain and Ireland.

Evolution of human immunodeficiency virus type 1 in perinatally infected infants with rapid and slow progression to disease (1997)
Journal Article

We addressed the relationship between the origin and evolution of human immunodeficiency virus type 1 (HIV-1) variants and disease outcome in perinatally infected infants by studying the V3 regions of viral variants in samples obtained from five tran... Read More about Evolution of human immunodeficiency virus type 1 in perinatally infected infants with rapid and slow progression to disease.

Planktic foraminiferal molecular evolution and their polyphyletic origins from benthic taxa (1997)
Journal Article

Phylogenetic analyses based on partial sequences of the small subunit (SSU) ribosomal (r) RNA gene have shown that the planktic and benthic foraminifera form a distinct monophyletic group within the eukaryotes. In order to determine the evolutionary... Read More about Planktic foraminiferal molecular evolution and their polyphyletic origins from benthic taxa.

Reading the history of the oceans in plankton DNA (1996)
Journal Article

Early evolutionary origin of the planktic foraminifera inferred from small subunit rDNA sequence comparisons (1996)
Journal Article

Phylogenetic analysis of five partial planktic foraminiferal small subunit (SSU) ribosomal (r) DNA sequences with representatives of a diverse range of eukaryote, archaebacterial, and eubacterial taxa has revealed that the evolutionary origin of the... Read More about Early evolutionary origin of the planktic foraminifera inferred from small subunit rDNA sequence comparisons.