Microsatellites from the beluga whale<i>Delphinapterus leucas</i>

Buchanan, Fiona; Friesen, M. K.; Littlejohn, R. P.; Clayton, J. W.

doi:10.1111/j.1365-294x.1996.tb00348.x

Cited by 86 publications

(50 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The permanent pack ice of the central Canadian Arctic may also help to separate western from eastern stocks of belugas (Sergeant and Brodie, 1975), although extralimital sightings do occur (Stewart and Burt, 1994). Populations of belugas in the Mackenzie Delta (Beaufort Sea) and Arviat (West Hudson Bay) regions have been genetically separate for an estimated 3900 years (Buchanan et al, 1995). Such separate stock structure among belugas helps to maintain maximum genetic diversity across the Arctic.…”

Section: Migrations and Movements Of Marine Mammals Relative To The Amentioning

confidence: 99%

Observations and Predictions of Arctic Climatic Change: Potential Effects on Marine Mammals

Tynan¹,

DeMaster²

1997

ARCTIC

264

186

View full text Add to dashboard Cite

ABSTRACT. Recent analyses have revealed trends over the past 20-30 years of decreasing sea ice extent in the Arctic Ocean coincident with warming trends. Such trends may be indicative of the polar amplification of warming predicted for the next several decades in response to increasing atmospheric CO 2 . We have summarized these predictions and nonuniform patterns of arctic climate change in order to address their potential effects on marine mammals. Since recent trends in sea ice extent are nonuniform, the direct and indirect effects on marine mammals are expected to vary geographically. Changes in the extent and concentration of sea ice may alter the seasonal distributions, geographic ranges, patterns of migration, nutritional status, reproductive success, and ultimately the abundance and stock structure of some species. Ice-associated seals, which rely on suitable ice substrate for resting, pupping, and molting, may be especially vulnerable to such changes. As recent decreases in ice coverage have been more extensive in the Siberian Arctic (60˚E-180˚E) than in the Beaufort Sea and western sectors, we speculate that marine mammal populations in the Siberian Arctic may be among the first to experience climate-induced geographic shifts or altered reproductive capacity due to persistent changes in ice extent. Alteration in the extent and productivity of ice-edge systems may affect the density and distribution of important ice-associated prey of marine mammals, such as arctic cod Boreogadus saida and sympagic ("with ice") amphipods. Present climate models, however, are insufficient to predict regional ice dynamics, winds, mesoscale features, and mechanisms of nutrient resupply, which must be known to predict productivity and trophic response. Therefore, it is critical that mesoscale process-oriented studies identify the biophysical coupling required to maintain suitable prey availability and ice-associated habitat for marine mammals on regional arctic scales. Only an integrated ecosystems approach can address the complexity of factors determining productivity and cascading trophic dynamics in a warmer Arctic. This approach, integrated with monitoring of key indicator species (e.g., bowhead whale, ringed seal, and beluga), should be a high priority.Key words: Arctic Ocean, climate change, sea ice extent, global warming, marginal ice edge zone, bowhead whale, Balaena mysticetus, ice-associated seals, ringed seal, Phoca hispida, beluga, Delphinapterus leucas RÉSUMÉ. Des analyses récentes ont fait apparaître des tendances, au cours des 20 à 30 dernières années, à la diminution de l'étendue des glaces de mer dans l'océan Arctique qui coïncident avec des tendances au réchauffement. Ces tendances pourraient être symptomatiques de l'amplification polaire du réchauffement prédit pour les prochaines décennies suite à la hausse de CO 2 dans l'atmosphère. Cet article offre un résumé de ces prédictions et des schémas non uniformes de changement climatique dans l'Arctique, en vue d'examiner leurs retombées potentielles sur les ...

show abstract

Section: Migrations and Movements Of Marine Mammals Relative To The Amentioning

confidence: 99%

Observations and Predictions of Arctic Climatic Change: Potential Effects on Marine Mammals

Tynan¹,

DeMaster²

1997

ARCTIC

264

186

View full text Add to dashboard Cite

show abstract

“…Ten polymorphic dinucleotide microsatellite loci were analysed: d22 (Shinohara et al 1997), EV5, EV14, EV37 (Valsecchi & Amos 1996), FCB1, FCB17 (Buchanan et al 1996), Mk6, Mk8 (Krutzën et al 2001), Sw10 and Sw19 (Richard et al 1996). PCR reactions were performed in multiplex whenever possible, applying a touched-down decrease in annealing temperatures: Sw19 and Sw19 (50 → 47.5°C); FCB1, FCB17 and EV37 (56 → 53°C); Mk6, Mk8, d22 (56 → 53°C).…”

Section: Data Acquisitionmentioning

confidence: 99%

High gene flow in oceanic bottlenose dolphins (Tursiops truncatus) of the North Atlantic

et al. 2007

View full text Add to dashboard Cite

Despite the openness of the oceanic environment, limited dispersal and tight social structure often induce genetic structuring in marine organisms, even in large animals such as cetaceans. In the bottlenose dolphin, mitochondrial and nuclear DNA analyses have revealed the existence of genetic differentiation between pelagic (or offshore) and coastal (or nearshore) ecotypes in the western North Atlantic, as well as between coastal populations. Because previous studies concentrated on continental margins, we analysed the population structure of bottlenose dolphins in two of the most isolated archipelagos of the North Atlantic: the Azores and Madeira. We analysed 112 samples collected on live animals in the two archipelagos, and nine samples collected on stranded animals in Madeira and mainland Portugal. Genetic analyses consisted in molecular sexing, sequencing of part of the mitochondrial hypervariable region, and screening of ten microsatellite loci. We predicted that: 1/ there is at least one pelagic and one or more coastal populations in each archipelago; 2/ populations are differentiated between and possibly within archipelagos. Contrary to these predictions, results indicated a lack of population structure in the study area. In addition, comparison with published sequences revealed that the samples from the Azores and Madeira were not significantly differentiated from samples of the pelagic population of the western North Atlantic. Thus, bottlenose dolphins occurring in the pelagic waters of the North Atlantic belong to a large oceanic population, which should be regarded as a single conservation unit. Unlike what is known for coastal populations, oceanic bottlenose dolphins are able to maintain high levels of gene flow.

show abstract

“…However, the development of microsatellite markers also requires a large amount of work, but, fortunately, many primers developed for one species can be used in related species (Moore et al, 1991;Crooijmans et al, 1993;Hanotte et al, 1994;Bruford et al, 1996;Primmer et al, 1996). Microsatellites have been useful in many animal conservation studies, including Komodo dragons (Ciofi and Bruford, 1999), turtles (FitzSimmons et al, 1997), whales (Buchanan et al, 1996), wolves (Roy et al, 1994), snakes (Prosser et al, 1999), bears (Paetkau et al, 1998), butterflies (Keyghobadi et al, 1999) and birds (Hansson et al, 2000;Nesje et al, 2000;Johnson et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Molecular markers for population genetic analyses in the family Psittacidae (Psittaciformes, Aves)

Faria

Miyaki

2006

Genet. Mol. Biol.

View full text Add to dashboard Cite

The selection of molecular markers for population studies is an important tool for biodiversity conservation. The family Psittacidae contains many endangered and vulnerable species and we tested three kinds of molecular markers for their potential use in population studies of five psitacid species: 43 hyacinth macaws (Anodorhynchus hyacinthinus), 42 blue-and-yellow macaws (Ara ararauna), 23 red-and-green macaws (Ara chloroptera), 19 red-spectacled amazons (Amazona pretrei); and 18 red-tailed amazons (Amazona brasiliensis). We tested 21 clones from a genomic library of golden conure (Guarouba guarouba) minisatellites and 12 pairs of microsatellite primers developed for the domestic chicken (Gallus gallus) and A. hyacinthinus. We also tested seven tetranucleotide repeat primers for their ability to amplify regions between microsatellite loci (inter simple sequence repeats, ISSRs). We were able to select seven markers that were variable in different degrees for three species (A. hyacinthinus, A. chloroptera and A. ararauna). The mini and microsatellites produced more polymorphic patterns than the ISSRs. The genetic variability of the species studied seems to be correlated with their endangered status.

show abstract

Microsatellites from the beluga whaleDelphinapterus leucas

Cited by 86 publications

References 12 publications

Observations and Predictions of Arctic Climatic Change: Potential Effects on Marine Mammals

Observations and Predictions of Arctic Climatic Change: Potential Effects on Marine Mammals

High gene flow in oceanic bottlenose dolphins (Tursiops truncatus) of the North Atlantic

Molecular markers for population genetic analyses in the family Psittacidae (Psittaciformes, Aves)

Contact Info

Product

Resources

About