Allozyme Variation of Great Lakes Alewife, Alosa pseudoharengus: Genetic Differentiation and Affinities of a Recent Invader

1992 ◽  
Vol 49 (9) ◽  
pp. 1770-1777 ◽  
Author(s):  
Peter E. Ihssen ◽  
G. William Martin ◽  
David W. Rodgers
Keyword(s):  
New York ◽  
Great Lakes ◽  
Allozyme Variation ◽  
Allelic Frequency ◽  
Starch Gel Electrophoresis ◽  
Alosa Pseudoharengus ◽  
Allelic Frequencies ◽  
Cayuga Lake ◽  
Finger Lakes ◽  
Allozyme Loci

Allelic frequencies for six polymorphic allozyme loci (27 loci examined), as determined by starch-gel electrophoresis, were not significantly different for alewife, Alosa pseudoharengus, among the Great Lakes (Ontario, Erie, Huron, and Michigan). Alewife from one of the Finger Lakes (Cayuga Lake) had allelic frequencies similar to Great Lakes alewife, and the alleles of Great Lakes alewife form a subset of those found in Cayuga Lake. In contrast, Maritime Canada populations (Gaspereau, Miramichi, and St. John rivers) were distinct from each other and from the Great Lakes and Cayuga Lake populations. Highly significant allelic frequency differences were observed among the Maritime populations and between the Maritime populations and the Great Lakes or Cayuga Lake populations. Fifteen alleles were not shared between the Great Lakes and the Maritime populations. We concluded from these results that Great Lakes alewife and Cayuga Lake alewife form a contiguous stock and that Great Lakes alewife are a recent invader that probably originated from the Hudson–Mohawk rivers via the Erie Canal and the New York Finger Lakes rather than the previously suggested alternative origin from the Canadian Maritimes via the St. Lawrence River.

The Frequency and Characteristics of Lake-Effect Precipitation Events Associated with the New York State Finger Lakes

2009 ◽  
Vol 48 (4) ◽  
pp. 873-886 ◽  
Author(s):  
Neil Laird ◽  
Ryan Sobash ◽  
Natasha Hodas
Keyword(s):  
New York ◽  
Great Lakes ◽  
Salt Lake ◽  
New York State ◽  
Weather System ◽  
York State ◽  
Lake Effect ◽  
Finger Lakes ◽  
Precipitation Band ◽  
Precipitation Events

Abstract This study presents a climatological analysis of the frequency and characteristics of lake-effect precipitation events that were initiated or enhanced by lakes within the New York State (NYS) Finger Lakes region for the 11 winters (October–March) from 1995/96 through 2005/06. Weather Surveillance Radar-1988 Doppler (WSR-88D) data from Binghamton, New York, were used to identify 125 lake-effect events. Events occurred as 1) a well-defined, isolated precipitation band over and downwind of a lake, 2) an enhancement of mesoscale lake-effect precipitation originating from Lake Ontario and extending southward over an individual Finger Lake, 3) a quasi-stationary mesoscale precipitation band positioned over a lake embedded within extensive regional precipitation from a synoptic weather system, or 4) a transition from one type to another. Results show that lake-effect precipitation routinely develops over lakes that are considerably smaller than lakes previously discussed as being associated with lake-effect precipitation, such as the Great Lakes. Lake-effect events occurred during each month (October–March) across the 11 winters studied and were identified in association with each of the six easternmost Finger Lakes examined in this study. The frequency of NYS Finger Lakes lake-effect events determined in the current investigation paired with subsequent analyses of the environmental conditions leading to these events will allow for 1) comparative analyses of necessary conditions for lake-effect development across a range of lake sizes (e.g., NYS Finger Lakes, Lake Champlain, Great Salt Lake, and Great Lakes) and 2) an informative examination of the connection between mesoscale processes and climate variability.

Genetic evidence for a Hyalella species complex within the Great Lakes - St. Lawrence River drainage basin: implications for ecotoxicology and conservation biology

1998 ◽  
Vol 76 (6) ◽  
pp. 1134-1152 ◽  
Author(s):  
Ian D Hogg ◽  
Céline Larose ◽  
Yves de Lafontaine ◽  
Kenneth G Doe
Keyword(s):  
Great Lakes ◽  
Drainage Basin ◽  
Allozyme Variation ◽  
Laboratory Culture ◽  
Population Differences ◽  
Undescribed Species ◽  
Sufficient Magnitude ◽  
Allozyme Loci ◽  
River Drainage Basin ◽  
St Lawrence River

We examined the population genetic structure (allozyme variation) of Hyalella azteca (Saussure) (Amphipoda:Crustacea) collected from six field locations and one laboratory culture within and near the Great Lakes – St. Lawrence Riverdrainage basin. We found considerable variability in allele frequency among locations. Wright’s FST value averaged over 10polymorphic allozyme loci was 0.56 (range 0.10–0.93), indicating “very great” levels of genetic differentiation amonglocations. Analyses of genetic distance (Nei’s, Rogers’) suggested the presence of four genetically distinct groups. For thelaboratory population, differences were of sufficient magnitude to merit consideration as a separate (presently undescribed)species of Hyalella, showing fixed differences at 2 of 10 loci examined. The presence of genetically distinctspecies/populations within H.azteca potentially confounds the results of laboratory ecotoxicology tests, depending on whichindividuals are used in an analysis. Accordingly, we urge caution where results may be used to establish water-quality criteria.From a conservation perspective, the presence of an undescribed species within a relatively well known taxon such as H.aztecasuggests that current taxonomic inventories of benthic invertebrates may not only be incomplete, but perhaps grosslyunderestimated. We advocate a taxonomic reevaluation of H azteca and other widespread benthic taxa, with particular

Biochemical Genetic Differentiation of Lake Trout (Salvelinus namaycush) Stocks of the Great Lakes Region

1988 ◽  
Vol 45 (6) ◽  
pp. 1018-1029 ◽  
Author(s):  
P. E. Ihssen ◽  
J. M. Casselman ◽  
G. W. Martin ◽  
R. B. Phillips
Keyword(s):  
Genetic Variability ◽  
Great Lakes ◽  
Lake Trout ◽  
Salvelinus Namaycush ◽  
Significant Degree ◽  
Allelic Frequency ◽  
Small Lakes ◽  
Large Lakes ◽  
Geographic Ranges ◽  
Allelic Frequencies

Allelic frequencies for lake trout (Salvelinus namaycush) samples collected from 27 small lakes or spawning shoals on larger lakes did not show significant annual changes. Levels of genetic variability were in the high range for Salmonidae, with 57% of the loci examined polymorphic (1% criterion) and 4.7% average heterozygosity per locus. Twenty-one percent of the total genetic variability was due to differences between stocks. Highly significant allelic frequency differences were found among allopatric as well as sympatric stocks. Genetic differences among sympatric stocks of Lake Superior indicated a significant degree of genetic isolation among these stocks. Genetic diversity within stocks, as measured by the proportion of polymorphic loci, was larger in stocks from large lakes than small lakes or transplanted stocks from large lakes into small lakes. Geographic patterns in allelic frequencies were observed. Samples from the northwestern range of our study area (upper Great Lakes, northwestern Ontario, and Manitoba) could be distinguished from those of the southeastern range by both allelic frequency differences and the presence or absence of alleles. We suggest that these two geographic ranges were colonized by lake trout that survived in different refugia during the Wisconsin glaciation. Unusual stocks of lake trout were found in three small lakes in the Haliburton Highlands of southern Ontario, with alleles at high frequencies that are rare or absent in most other stocks. We propose that the Haliburton Highlands lake trout originated from a glacial relict stock and survived during the last glaciation isolated from refugia used by other lake trout.

Stable isotope patterns of benthic organisms from the Great Lakes region indicate variable dietary overlap of Diporeia spp. and dreissenid mussels

2014 ◽  
Vol 71 (12) ◽  
pp. 1784-1795 ◽  
Author(s):  
Carolyn J. Foley ◽  
Gabriel J. Bowen ◽  
Thomas F. Nalepa ◽  
Marisol S. Sepúlveda ◽  
Tomas O. Höök
Keyword(s):  
New York ◽  
Stable Isotope ◽  
Great Lakes ◽  
Resource Use ◽  
Lake Michigan ◽  
Dreissenid Mussels ◽  
Cayuga Lake ◽  
Dramatic Decline ◽  
Before And After ◽  
Terrestrial Inputs

Competition between native and invasive species may bring about a suite of ecological and evolutionary outcomes, including local extirpations. In the Laurentian Great Lakes, competition for food may explain the dramatic decline of Diporeia spp. amphipods following the introduction of dreissenid mussels. This hypothesis has not been confirmed, in part because dreissenids and Diporeia appear to co-exist and flourish in other systems, including the Finger Lakes of New York. We used carbon, nitrogen, hydrogen, and oxygen stable isotope ratios to examine resource use by Diporeia from three spatially distinct populations (Lake Michigan, Lake Superior, and Cayuga Lake), dreissenids from areas where they co-occur with Diporeia (Lake Michigan and Cayuga Lake), and Diporeia from Lake Michigan collected before and after dreissenid invasion (1986–2009). Our results suggest that dreissenids may affect resource use by Diporeia in areas of co-occurrence, but the extent to which those effects are positive or negative is unclear. Terrestrial inputs may provide an important subsidy for Diporeia populations in small systems but may not be substantial enough in the Great Lakes to ensure that both taxa thrive.

Allozyme Variation and Population Substructuring in the Caucasian Ground Lizards Lacerta derjugini and Lacerta praticola

2011 ◽  
Vol 4 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Ross D. MacCulloch ◽  
Ilya S. Darevsky ◽  
Robert W. Murphy ◽  
Jinzhong Fu
Keyword(s):  
Genetic Diversity ◽  
Allozyme Variation ◽  
Close Proximity ◽  
Geographic Separation ◽  
Population Substructuring ◽  
Allozyme Loci ◽  
Two Populations

Genetic diversity at 35 allozyme loci was surveyed in Lacerta derjugini (3 populations) and L. praticola (2 populations). Indices of variability were consistent with those found in other Caucasian Lacerta. There was little genetic substructuring between two populations of L. praticola despite considerable geographic separation. Conversely, populations of L. derjugini in close proximity to one another exhibited considerable substructuring.

HISTORICAL CHANGES IN MERCURY FLUXES TO SIX NEW YORK FINGER LAKES

2016 ◽  
Author(s):  
Pascale Grossnickle ◽  
◽  
Keri Geiser ◽  
Tara M. Curtin ◽  
Laura Cappio ◽  
...  
Keyword(s):  
New York ◽  
Historical Changes ◽  
Finger Lakes ◽  
Mercury Fluxes

A PROPOSED TIME-STRATIGRAPHIC PARADIGM FOR LATE QUATERNARY EVENTS IN THE CENTRAL FINGER LAKES OF NEW YORK STATE

2016 ◽  
Author(s):  
Andrew Kozlowski ◽  
◽  
Shannon A. Mahan ◽  
Brian Bird ◽  
Robert S. Feranec
Keyword(s):  
New York ◽  
Late Quaternary ◽  
New York State ◽  
York State ◽  
Finger Lakes
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