Multiple dispersal strategies of the invasive quagga mussel (Dreissena bugensis) as revealed by microsatellite analysis

1999 ◽  
Vol 56 (12) ◽  
pp. 2248-2261 ◽  
Author(s):  
A B Wilson ◽  
K -A Naish ◽  
E G Boulding
Keyword(s):  
North America ◽  
Great Lakes ◽  
Census Data ◽  
Isolation By Distance ◽  
Dispersal Ability ◽  
Quagga Mussel ◽  
Dreissena Bugensis ◽  
High Dispersal ◽  
Colonization Success

The recent invasion of the Laurentian Great Lakes by Dreissena polymorpha and Dreissena bugensis presents a unique opportunity to study the role of high dispersal ability in the colonization success of invading species. While the dispersal of D. polymorpha has been characterized by several jump dispersal events, census data suggest a more gradual diffusion of D. bugensis from its point of introduction through the lower Great Lakes. In this study, we use six highly polymorphic microsatellite markers to investigate the present-day population genetic structure of D. bugensis in North America in an effort to clarify the role of multiple dispersal strategies in its colonization success. In contrast with survey data, which would suggest a gradual spread ultimately resulting in a pattern fitting a model of isolation-by-distance, the significant allelic and FST differences observed between 18 of 28 population pairs do not correlate with any simple geographic relationship. Deviations from isolation-by-distance are due, in part, to a higher gene flow between disjunct populations than that expected under a normally distributed pattern of dispersal. These results, in combination with recent reports of the quagga mussel outside its established North American range, suggest that boater-mediated jump dispersal of D. bugensis may be contributing to its colonization and spread in North America.

Identification of the Great Lakes Quagga Mussel as Dreissena bugensis from the Dnieper River, Ukraine, on the Basis of Allozyme Variation

1994 ◽  
Vol 51 (7) ◽  
pp. 1485-1489 ◽  
Author(s):  
Adrian P. Spidle ◽  
J. Ellen Marsden ◽  
Bernie May
Keyword(s):  
Great Lakes ◽  
Lake Erie ◽  
Allozyme Variation ◽  
Morphological Characters ◽  
The Black Sea ◽  
Quagga Mussel ◽  
Allozyme Data ◽  
Dreissena Bugensis ◽  
The North ◽  
Deep Waters

The discovery of a second dreissenid species, the quagga mussel, in the Great Lakes in 1991 prompted a search for its identity. We have identified the North American quagga mussel as Dreissena bugensis Andrusov on the basis of allozyme data and morphological characters. Further, a phenotypically distinct form of the quagga mussel found in Lakes Erie and Ontario also matches the electrophoretic profiles of the typical Lake Ontario quagga and European D. bugensis. We confirm that the white "profunda" mussel found in the deep waters of Lake Erie is a phenotype of the quagga mussel, and we conclude that the quagga mussel is D. bugensis which has been introduced from the Black Sea drainage of Ukraine.

Absence of naturally occurring hybridization between the quagga mussel (Dreissena bugensis) and the zebra mussel (D. polymorpha) in the lower Great Lakes

1995 ◽  
Vol 73 (2) ◽  
pp. 400-403 ◽  
Author(s):  
Adrian P. Spidle ◽  
Edward L. Mills ◽  
Bernie May
Keyword(s):  
Great Lakes ◽  
Zebra Mussel ◽  
Lake Erie ◽  
Lake Ontario ◽  
Natural Hybridization ◽  
Quagga Mussel ◽  
Dreissena Bugensis ◽  
Protein Coding ◽  
Quagga Mussels ◽  
Naturally Occurring

The coexistence of two dreissenids, the quagga mussel (Dreissena bugensis) and the zebra mussel (D. polymorpha), in a new environment raises the possibility of natural hybridization and possible introgression. Animals of both species were collected in areas where they occur sympatrically (25–39% were quagga mussels) and screened at two protein-coding loci believed to differentiate between the two species. The occurrence of alleles diagnostic for both species in an individual would demonstrate hybridization between the species. No hybrid individuals were observed in a survey of 750 animals from four sites in Lake Ontario and one site in Lake Erie. Successful hybridization between these two genetically disparate species seems unlikely in the Great Lakes.

scholarly journals A Review of the Biology and Ecology of the Quagga Mussel (Dreissena bugensis), a Second Species of Freshwater Dreissenid Introduced to North America

1996 ◽  
Vol 36 (3) ◽  
pp. 271-286 ◽  
Author(s):  
EDWARD L. MILLS ◽  
GARY ROSENBERG ◽  
ADRIAN P. SPIDLE ◽  
MICHAEL LUDYANSKIY ◽  
YURI PLIGIN ◽  
...  
Keyword(s):  
North America ◽  
Quagga Mussel ◽  
Dreissena Bugensis

Atmospheric teleconnection patterns associated with severe and mild ice cover on the Great Lakes, 1963–2011

2012 ◽  
Vol 47 (3-4) ◽  
pp. 421-435 ◽  
Author(s):  
Xuezhi Bai ◽  
Jia Wang
Keyword(s):  
North America ◽  
Great Lakes ◽  
El Niño ◽  
El Nino ◽  
Ice Cover ◽  
Reanalysis Data ◽  
Teleconnection Pattern ◽  
La Niña ◽  
Atmospheric Teleconnection ◽  
La Nina

Atmospheric teleconnection circulation patterns associated with severe and mild ice cover over the Great Lakes are investigated using the composite analysis of lake ice data and National Center of Environmental Prediction (NCEP) reanalysis data for the period 1963–2011. The teleconnection pattern associated with the severe ice cover is the combination of a negative North Atlantic Oscillation (NAO) or Arctic Oscillation (AO) and negative phase of Pacific/North America (PNA) pattern, while the pattern associated with the mild ice cover is the combination of a positive PNA (or an El Niño) and a positive phase of the NAO/AO. These two extreme ice conditions are associated with the North American ridge–trough variations. The intensified ridge–trough system produces a strong northwest-to-southeast tilted ridge and trough and increases the anomalous northwesterly wind, advecting cold, dry Arctic air to the Great Lakes. The weakened ridge–trough system produces a flattened ridge and trough, and promotes a climatological westerly wind, advecting warm, dry air from western North America to the Great Lakes. Although ice cover for all the individual lakes responds roughly linearly and symmetrically to both phases of the NAO/AO, and roughly nonlinearly and asymmetrically to El Niño and La Niña events, the overall ice cover response to individual NAO/AO or Niño3.4 index is not statistically significant. The combined NAO/AO and Niño3.4 indices can be used to reliably project severe ice cover during the simultaneous –NAO/AO and La Niña events, and mild ice cover during the simultaneous +NAO/AO and El Niño events.

scholarly journals Role of propagule pressure in colonization success: disentangling the relative importance of demographic, genetic and habitat effects

2013 ◽  
Vol 26 (8) ◽  
pp. 1691-1699 ◽  
Author(s):  
R. A. Hufbauer ◽  
A. Rutschmann ◽  
B. Serrate ◽  
H. Vermeil de Conchard ◽  
B. Facon
Keyword(s):  
Propagule Pressure ◽  
Relative Importance ◽  
Colonization Success

Early Maize in Northeastern North America: A Comment on Emerson and Colleagues

2021 ◽  
Vol 86 (2) ◽  
pp. 425-427
Author(s):  
John P. Hart ◽  
William A. Lovis ◽  
M. Anne Katzenberg
Keyword(s):  
North America ◽  
Great Lakes ◽  
Empirical Evidence ◽  
River Valley ◽  
Human Bone ◽  
Northeastern North America ◽  
Isotopic Evidence ◽  
St Lawrence River

Emerson and colleagues (2020) provide new isotopic evidence on directly dated human bone from the Greater Cahokia region. They conclude that maize was not adopted in the region prior to AD 900. Placing this result within the larger context of maize histories in northeastern North America, they suggest that evidence from the lower Great Lakes and St. Lawrence River valley for earlier maize is “enigmatic” and “perplexing.” Here, we review that evidence, accumulated over the course of several decades, and question why Emerson and colleagues felt the need to offer opinions on that evidence without providing any new contradictory empirical evidence for the region.

From converts to cooperation: Protestant internationalism, US missionaries and Indian Christians and ‘Professional’ social work between Boston and Bombay (c. 1920–1950)

2021 ◽  
pp. 1-20
Author(s):  
Michael Phillipp Brunner
Keyword(s):  
Social Work ◽  
North America ◽  
Social Gospel ◽  
Local Conditions ◽  
Historical Approach ◽  
The Social ◽  
Social Concerns ◽  
High Phase

Abstract The 1920s and 30s were a high phase of liberal missionary internationalism driven especially by American-led visions of the Social Gospel. As the missionary consensus shifted from proselytization to social concerns, the indigenization of missions and the role of the ‘younger churches’ outside of Europe and North America was brought into focus. This article shows how Protestant internationalism pursued a ‘Christian Sociology’ in dialogue with the field’s academic and professional form. Through the case study of settlement sociology and social work schemes by the American Marathi Mission (AMM) in Bombay, the article highlights the intricacies of applying internationalist visions in the field and asks how they were contested and shaped by local conditions and processes. Challenging a simplistic ‘secularization’ narrative, the article then argues that it was the liberal, anti-imperialist drive of the missionary discourse that eventually facilitated an American ‘professional imperialism’ in the development of secular social work in India. Adding local dynamics to the analysis of an internationalist discourse benefits the understanding of both Protestant internationalism and the genesis of Indian social work and shows the value of an integrated global micro-historical approach.

scholarly journals On the role of local depth and latitude on surface warming heterogeneity in the Laurentian Great Lakes

Inland Waters ◽  
2021 ◽  
pp. 1-15
Author(s):  
Elisa Calamita ◽  
Sebastiano Piccolroaz ◽  
Bruno Majone ◽  
Marco Toffolon
Keyword(s):  
Great Lakes ◽  
Laurentian Great Lakes ◽  
Surface Warming ◽  
Local Depth
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