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Recent News and Articles on the Keywords: hooded seals + dna reveals + have  Related to the article below (Last Update: 7/8/2008)

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Sex-Specific Restriction Fragments and Sex Ratios Revealed by DNA Fingerprinting in the Brown Skua -
CD Millar, DM Lambert, AR Bellamy, PM Stapleton, … - Journal of Heredity, 1992 - Am Genetic Assoc
... So far, such advantages have not been demonstrated for communal ... Shared paternity
revealed by genetic petitive DNA sequences in ... in Hooded Seal DNA fingerprints. ...

[CITATION] … Variation in the Hooded Seal, Cystophora Cristata, Based on Enzyme Polymorphism and Multi-Locus DNA … -
RC Sundt, G Dahle, G Naevdal - Hereditas, 1994 - Blackwell Synergy
... variable profiles of Haelii, //inti and Mbol digested genomic DNA were revealed
using the ... Moulting hooded seals are also present in the pack-ice of the ...

Genetic variation between populations of the harp seal, Phoca groenlandica
J Meisfjord, RC Sundt - ICES Journal of Marine Science, 1996 - icesjms.oxfordjournals.org
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… characterization of a herpesvirus isolated from Pacific harbor seals (Phoca vitulina richardsii) -
DP King, R Parselles, FMD Gulland, JM Lapointe, LJ … - Archives of Virology, 1998 - Springer
... While previous studies have revealed wide distribution of ... harp seals (Phoca
groennlandica) and hooded seals (Cystophora cristata ... AJ (1992) The DNA sequence of ...

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A Schenk, KM Kovacs - Journal of Mammalogy, 1996 - JSTOR
... McRAE, SB 1990. Mating strategies and genetic re- latedness in the hooded seal. ... 1990.
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An IS711 Element Downstream of the bp26 Gene Is a Specific Marker of Brucella spp. Isolated from … -
A Cloeckaert, M Grayon, O Grepinet - Clinical and Vaccine Immunology, 2000 - Am Soc Microbiol
... 1,029 bp), PCR performed on DNA of three ... 1,900-bp PCR products revealed the presence ...
striped dolphins (Stenella caeruleoalba), hooded seals (Cystophora cristata ...

… ) from Canadian Atlantic marine fishes and seals: Characterization by RFLP analysis of genomic DNA -
J Brattey, WS Davidson - Canadian Journal of Fisheries and Aquatic Sciences, 1996 - article.pubs.nrc-cnrc.gc.ca
... DNA ... Recently, studies of allozyme variation revealed that P. de- cipiens in ... B infects
both grey and harbour seals, and occasionally hooded seals, Cysto- phora ...

[CITATION] Interspecific microsatellite markers for the study of pinniped populations -
NJ Gemmell, PJ Allen, SJ Goodman, JZ Reed - Molecular Ecology, 1997 - Blackwell Synergy
... 8 of 10 species) Hooded seal (Cystophora cristata ... Arctocephalus forsteri) Antarctic
fur seal (Arctocephalus gazella ... separated by a DNA?DNA hybridization ?T m ...

A phylogeny of the extant Phocidae inferred from complete mitochondrial DNA coding regions -
CS Davis, I Delisle, I Stirling, DB Siniff, C … - Molecular Phylogenetics and Evolution, 2004 - Elsevier
... bearded seal), Cystophora cristata (hooded seal), Pagophilus groenlandica ... DNA sequences
for the mitochondrial heavy ... including the monk seals) was supported with ...

Female distribution, genetic relatedness, and fostering behaviour in harbour seals, Phoca vitulina -
CM SCHAEFF, DJ BONESS, WD BOWEN - Animal Behaviour, 1999 - Elsevier
... 1998; hooded seals, Cystophora cristata=0.34, McRae & Kovacs ... second molecular marker
(microsatellites: harbour seals had lower ... An analysis of mitochondrial DNA ...

Source: Google Scholar
 

DNA reveals hooded seals have wanderlust

Researchers have discovered a new fact about hooded seals, a mysterious 200 to 400 kilogram mammal that spends all but a few days each year in the ocean.

An international team of researchers led by Dr. David Coltman, an evolutionary geneticist at the University of Alberta, have learned that all the hooded seal populations in the world share the same genetic diversity. The researchers reached their conclusions after analysis of more than 20 years of DNA samples taken from hundreds of hooded seals from around the world.

"These results mean that if you brought me a DNA sample of a hooded seal, I wouldn't be able to tell you where in the world you got that sample because of the genetic similarity between populations," Coltman said.

"This is important information because it helps shed light on an animal that we know very little about," he added.

Article continues below and (thank you)
 

Female hooded seals give birth (whelp) and wean their pups on ice floes over a period of three to four days once every year in the spring. Male seals wait until the females finish weaning for the one time of year when they will mate. The researchers believe the genetic similarities among the seals indicate these seals intermingle and mate among populations.

The research is published this month in the journal Molecular Ecology.

There are four places in the world where hooded seals go to whelp: Davis Straight in northern Canada, the Gulf of St. Lawrence, the eastern coast off of Greenland, and the coast off of Labrador. Ninety per cent of the estimated 600,000 hooded seals in the world whelp off the coast of Labrador.

Hooded seals are often harvested—especially juveniles—for their meat, blubber and light blue coats. Hooded seals are slightly larger than their cousins, harp seals, which are more famously harvested and often amidst controversy. Much less is known about the behavior of hooded seals compared to what is known about harp seals, which is a much more social breed of seal.

"Any little bit of information we can learn about hooded seals is really beneficial," Coltman said. "And now that we know hooded seals are panmictic, that is, that they interbreed worldwide, it can help us shape the way that we try to preserve and manage them."

 
 
 
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