Chromosomal and nuclear characteristics of deep-sea hydrothermal-vent organisms: correlates of increased growth rate

  title={Chromosomal and nuclear characteristics of deep-sea hydrothermal-vent organisms: correlates of increased growth rate},
  author={David R. Dixon and L. R. J. Dixon and P. L. Pascoe and J. T. Wilson},
  journal={Marine Biology},
Abstract. A range of tissue and cell types from adult and juvenile stages of vent- and non-vent-dwelling deep-sea and shallow-water organisms were compared for signs of cell division, in preparation for a cytogenetic study of the different groups. Virtually all the Mid-Atlantic Ridge (MAR) vent species (bresiliid shrimp, bathymodiolid mussel, branchipolynoid polychaete, and a range of small gastropods) showed an abundance of metaphase chromosome spreads, indicating a generally high intrinsic… 
Chromosomes of Pacific hydrothermal vent invertebrates: towards a greater understanding of the relationship between chromosome and molecular evolution
A positive correlation between chromosome number variation and molecular divergence at two ribosomal ribonucleic acid gene loci is identified and highlights the great potential for chromosome analysis in future taxonomic and evolutionary studies of the deep-sea vent fauna.
Survey of genome size in 28 hydrothermal vent species covering 10 families.
This is the first broad survey of 2C values in vent organisms and shows that certain hydrothermal vent species have particularly large genomes, including the largest genome yet reported for any anomuran.
Illuminating the impact of diel vertical migration on visual gene expression in deep‐sea shrimp
An expanded opsin repertoire among the shrimp and differential opsin expression that may be linked to spectral tuning during the migratory process are revealed, suggesting opsin co‐expression and subsequent fluctuations in Opsin expression may play an important role in diversifying the visual responses of vertical migrators.
Genome Size Diversity and Evolution in the Crustacea
This study more than doubles the number of crustacean genome size estimates generated over the past 60 years, and will help shed light on the C-value enigma, which aims to determine why genome size is so variable among organisms.
Amphipod genome sizes: first estimates for Arctic species reveal genomic giants.
The genome sizes of 8 species of amphipods collected from the Canadian Arctic were estimated by flow cytometry and the value for Ampelisca macrocephala represents the largest crustacean genome size recorded to date and indicates a 400-fold variation in genome size among crustaceans.
Large genomes among caridean shrimp.
Genome sizes for 7 species of caridean shrimp collected from the Canadian Arctic and the Gulf of St Lawrence suggest that large genomes may be relatively common in Arctic crustaceans, and underline the need for further comparative studies.
Decapod crustaceans from hydrothermal vents and cold seeps: a review through 2005
The taxonomic status, biogeographical distributions and existing collections are reviewed for all species of decapod crustaceans known from the vicinity of hydrothermal vents and cold (hydrocarbon or