Epizootic occurrence of Entomophaga maimaiga at the leading edge of an expanding population of the gypsy moth (Lepidoptera: Lymantriidae) in north-central Ontario

2004 ◽  
Vol 136 (6) ◽  
pp. 875-878 ◽  
Author(s):  
Yannick Villedieu ◽  
Kees van Frankenhuyzen
Keyword(s):  
New York ◽  
Gypsy Moth ◽  
New York State ◽  
Forest Health ◽  
Population Expansion ◽  
Leading Edge ◽  
North Shore ◽  
The North ◽  
Entomophaga Maimaiga ◽  
Expanding Population

Ever since its entry from New York State in the late 1960s, the gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), has continued to expand its distribution in Ontario to the north and west (Nealis and Erb 1993). Outbreaks were recorded for the first time in the Sudbury – North Bay region in the early 1990s, by which time there was evidence of resident populations extending along the north shore of Lake Huron as far west as Lake Superior. The population expansion along the north shore is characterized by a patchy occurrence of small outbreaks, which typically last for a few years and then disappear (Annual Forest Health Reports, Great Lakes Forestry Centre, http://www.glfc.cfs.nrcan.gc.ca/foresthealth/index_e.html). Nealis et al. (1999) found that winter weather, parasitoids, and the gypsy-moth-specific fungal pathogen Entomophaga maimaiga Humber, Shimazu et Soper (Zygomycetes: Entomophthorales) were the most prominent sources of mortality in those transient outbreaks.

A study in the tornoceratidae: the succession of tornoceras and related genera in the North American devonian

1965 ◽  
Vol 250 (763) ◽  
pp. 79-130 ◽  
Keyword(s):  
New York ◽  
New Species ◽  
New York State ◽  
Lateral Lobe ◽  
Evolutionary Trends ◽  
York State ◽  
The North ◽  
New Subgenus ◽  
Lower Frasnian ◽  
Shed Light

The species of Tornoceras , Parodiceras , Epitornoceras and Aulatornoceras in North America are described. The study provides an independent stratigraphical goniatite zonation, particularly for the New York State Devonian, and it also provides an analysis of allomorphis in Tornoceras . A discussion on the protoconch apparatus and the significance of the metamorphosis at the nepionic constriction in Tornoceras is given. For the Tornoceras stock descriptions are provided where possible of the ontogeny from protoconch to adult of species at eleven successive stratigraphical levels, and faunas at other levels are also described. Thus the successional ontogenies shed light on the phylogeny of the stock. Faunas at each level may be morphologically defined, but few consistently maintained evolutionary trends have been observed. Shell form seems particularly subject to independent, and probably phenotypic variation. Through the equivalents of the Middle Devonian to the lower Frasnian, protoconch width appears to increase progressively. Similarly the suture becomes more undulating, particularly with regard to the steepness of the ventrad face of the lateral lobe. Later species show reversion to early characters in these respects. The origin of Tornoceras from Parodiceras is argued, and it is considered that Tornoceras gave rise to all later members of the Tornoceratidae. A new subgenus, Linguatornoceras , is erected for Frasnian and lower Famennian tornoceratids with small lingulate lateral lobes. Seven new species and subspecies are described.

scholarly journals FEDERAL JETTY AND SAND DIKE AT THE ENTRANCE OF FIRE ISLAND INLET, NEW YORK

1986 ◽  
Vol 1 (20) ◽  
pp. 85
Author(s):  
Cyril Galvin ◽  
Charles J. Rooney ◽  
Gilbert K. Nersesian
Keyword(s):  
New York ◽  
Cross Sections ◽  
Good Condition ◽  
Inlet Channel ◽  
The West ◽  
North Shore ◽  
The North ◽  
Fire Island ◽  
Longshore Transport ◽  
Severe Erosion

Prior to construction at Fire Island Inlet, Fire Island was moving westward at more than 200 feet per year, the north shore of the inlet was eroding severely, and navigation in the inlet was difficult. The Federal Jetty, completed in 1941, and the sand dike, built in 1959, have halted the westward migration, eliminated the severe erosion, and partially improved navigation, with minimal maintenance or repair to the structures. There has been a large net accretion of sand east of the jetty and west of the dike, an unknown part of which is at the expense of shores to the west of the inlet. At the State Park on the south side of the inlet interior, erosion accelerated, probably because of the dike. The middle and ocean segments of the 4750-foot Federal Jetty are now (1987) in good condition, although the design implies a stability coefficient for the quarrystone jetty head at time of construction that would now be considered risky. Stability has been promoted by a stone blanket under and east of the jetty, a thick stone apron seaward of the jetty, a low (8 feet MLW) crest, and armor stone that has been partially keyed in place. Damage due to scour, common at other single-jetty inlets, is absent here because longshore transport, which easily overtops the low crest, keeps the inlet channel away from the jetty. Although the two seaward segments of the jetty remain in good condition, the inshore segment of the jetty is in poor condition, despite its apparently sheltered location. The cumulative effects of waves, possibly channeled to the site along recurved spits during storms, have damaged 1200 feet, and tidal scour has destroyed about 230 feet. The damaged segment has a design cross section which is onefifth and one-twelfth the cross sections of the jetty trunk and head.

scholarly journals Age and origin of the Cannon Point syenite, Essex County, New York: southernmost expression of Monteregian Hills magmatism?

2017 ◽  
Vol 54 (4) ◽  
pp. 379-392
Author(s):  
David G. Bailey ◽  
Marian Lupulescu ◽  
Jeffrey Chiarenzelli ◽  
Jonathan P. Traylor
Keyword(s):  
New York ◽  
New York State ◽  
Alkali Feldspar ◽  
Crustal Material ◽  
Lake Champlain ◽  
Essex County ◽  
York State ◽  
Fine Grained ◽  
The North ◽  
Basement Faults

Two syenite sills intrude the local Paleozoic strata of eastern New York State and are exposed along the western shore of Lake Champlain. The sills are fine-grained, alkali feldspar syenites and quartz syenites, with phenocrysts of sanidine and albite. The two sills are compositionally distinct, with crossing rare earth element profiles and different incompatible element ratios, which eliminates the possibility of a simple petrogenetic relationship. Zircon extracted from the upper sill yields a U–Pb age of 131.1 ± 1.7 Ma, making the sills the youngest known igneous rocks in New York State. This age is similar to that of the earliest intrusions in the Monteregian Hills of Quebec, >100 km to the north. Sr and Nd radiogenic isotope ratios are also similar to those observed in some of the syenitic rocks of the eastern Monteregian Hills. The Cannon Point syenites have compositions typical of A-type, within-plate granitoids. They exhibit unusually high Ta and Nb concentrations, resulting in distinct trace element signatures that are similar to those of the silicic rocks of the Valles Caldera, a large, rift-related magmatic system. We suggest that the Cannon Point syenites were melts derived primarily by anatexis of old, primitive, lower crustal material in response to Mesozoic rifting and to the intrusion of mantle-derived magmas. The sills indicate that the effects of continental rifting were spatially and temporally extensive, resulting in the reactivation of basement faults in the Lake Champlain Valley hundreds of kilometers west of the active rift boundary, and crustal melting >50 Ma after the initiation of rifting.

Ice damage impacts on the health of the northern New York State forest

2001 ◽  
Vol 77 (4) ◽  
pp. 619-625 ◽  
Author(s):  
Paul D. Manion ◽  
David H. Griffin ◽  
Benjamin D. Rubin
Keyword(s):  
New York ◽  
New York State ◽  
Forest Health ◽  
Basal Area ◽  
Ice Storm ◽  
Red Maple ◽  
Severe Damage ◽  
Crown Condition ◽  
White Pine ◽  
York State

Detailed crown condition information, including numbers of broken branches ≥ 5 cm diameter, broken tops, and healthy branches, were recorded for 5434 living trees > 9 cm dbh from 603 ten-basal-area-factor prism plots (three per forest stand) at 201 random points (stands) throughout the ice damage region of northern New York State. Twenty five percent of the sample stands had ≥ 20% branch breakage. Bigtooth aspen, red oak, red maple, and white pine had the most breakage. Comparison of potential mortality of trees associated with ≥ 75% ice damage (severe damage) to baseline (predicted) mortality to maintain the existing forest structure suggests that ice damage may alter the health of 18% of the forest stands but this is not sufficient to alter the health (sustainability) of the larger forest system. Key words: ice storm, forest health, sustainability, growth, mortality, dbh classes

Luminaries of the Albany Era: Beecher, Schuchert, and Hall

1987 ◽  
Vol 6 (1) ◽  
pp. 109-113
Author(s):  
Preston Cloud
Keyword(s):  
New York ◽  
Mass Movement ◽  
New York State ◽  
New Haven ◽  
Scientific Heritage ◽  
The North ◽  
Invertebrate Paleontology ◽  
Personal Assistants ◽  
The 19Th Century ◽  
York State Museum

James Hall of Albany, Director of the New York State Museum from 1866 until his death at 86 in 1897 was the most noted American geologist and paleontologist of his time. He originated the geosynclinal concept of mountain-building and ideas of gravity-mass-movement. He became the 19th century's most productive paleontologist by dint of unsparing drive, coupled with high ability and the talent and labors of six unusual "personal assistants". Among the latter were two gifted and dedicated Charleses, Beecher and Schuchert, who later established invertebrate paleontology at Yale and made it the North American mecca of the field for many years. Beecher, comfortably raised, well educated, biologically focussed, tragically short-lived, preceded his close friend and successor in Hall's employ, Schuchert, son of an impoverished immigrant cabinet maker, with only a primary school education, was geologically inclined, and long-lived. Coming to New Haven as he did, after 10 years of experience with the U.S. Geological Survey and the Smithsonian's Museum of Natural History, as well as his time in Albany, Schuchert provided the ideal complement to Beecher. Both were fine collectors, preparators, and illustrators as well as first rate scientists. Both became renowned scientists in their time. And both enriched the global scientific heritage with their publications. The Albany School was clearly the place to launch a career in paleontology during the last half of the 19th century. The subsequent lives of Beecher and Schuchert testify to that.

Quantitative Analysis of a Pathogen-Induced Premature Collapse of a “Leading Edge” Gypsy Moth (Lepidoptera: Lymantriidae) Population in Virginia

1999 ◽  
Vol 34 (1) ◽  
pp. 84-100 ◽  
Author(s):  
R. E. Webb ◽  
G. B. White ◽  
K. W. Thorpe ◽  
S. E. Talley
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Nuclear Polyhedrosis Virus ◽  
Leading Edge ◽  
Late Season ◽  
Early Appearance ◽  
Entomophaga Maimaiga ◽  
Resting Spores ◽  
Nuclear Polyhedrosis ◽  
Second Wave

The population dynamics of a “leading edge” (= at the edge of the expanding gypsy moth invasion) gypsy moth, Lymantria dispar (L.), population was monitored for 3 years (1995–97), with emphasis on the interactions of the gypsy moth nuclear polyhedrosis virus (LdNPV) and the fungus Entomophaga maimaiga Humber, Shimazu, & Soper. Gypsy moth populations in the woodlots varied from very sparse to high (potentially defoliating) levels. LdNPV was strongly density dependent, being confirmed only from the higher populated woodlots. In contrast, the fungus was similarly active in both sparse and highly-populated woodlots. In 1995, the fungal epizootic developed late in the season, with most larvae succumbing during stadia 5–6 and producing mainly resting spores (azygospores). Estimated mortality due to fungus averaged 68% in high-density plots and 85% in low-density plots. LdNPV mortality occurred in a two-wave epizootic, although second-wave LdNPV mortality was undoubtedly reduced because of the reduction of late-season larvae due to fungus activity. Estimated mortality due to LdNPV averaged 14% in highly-populated plots and 1% in low-population plots. In 1996, high levels of fungal-induced mortality occurred earlier in the gypsy moth season than in the previous year. Most gypsy moth larvae in 1996 died in a mid-season wave of fungal-induced mortality, with necropsied cadavers containing only conidia. This resulted in relatively few larvae surviving to late instars. At this time, a second wave of fungus-induced mortality occurred, with over half of the necropsied cadavers containing resting spores. The depletion of the gypsy moth populations by the fungus in 1995 resulted in a greatly reduced first wave of LdNPV in all plots in 1996, and perhaps due to the early appearance of the fungus in 1996, LdNPV was nearly absent from late-season larvae collected from all plots. In 1997, gypsy moth populations were uniformly low, and no dead larvae were found in any of the plots.

Introduction

2021 ◽  
pp. 1-9
Author(s):  
Laura Warren Hill
Keyword(s):  
New York ◽  
Political Economy ◽  
Civil Rights ◽  
Civil Rights Movement ◽  
Jim Crow ◽  
New York State ◽  
Political Mobilization ◽  
York State ◽  
The North ◽  
North And South

This chapter provides a background to the story of transformations brought by the rebellion of the Black community that happened first in Harlem, New York and then in Rochester on July 4, 1964. It points out that the rebellions in Rochester and Harlem shared a common spark: police brutality and misconduct. It also explains how the twin rebellions in New York State in 1964 were a foretaste of the Southern-based civil rights movement, which gave way to a different kind of Black political mobilization that centered largely in the urban North. The chapter reviews the consequences of the civil rights movement that dismantled Jim Crow as a system of legalized racism in the North and South. It emphasizes that the new Black political mobilization, which built on the energy arising from the rebellions and fashioning theories of a Black political economy, sought to address the structures of socioeconomic marginalization and impoverishment that survived the legal dismantling of Jim Crow.

Revisiting the Sum of Odd Natural Numbers

2003 ◽  
Vol 9 (1) ◽  
pp. 58-61
Author(s):  
Richard Kalman
Keyword(s):  
New York ◽  
School District ◽  
Middle Schools ◽  
Fifth Grade ◽  
New York School ◽  
Natural Numbers ◽  
North Shore ◽  
Fifth Grade Students ◽  
The North

The north shore (new york) school District asks me periodically to teach a class of selected fourth- and fifth-grade students. On those occasions, I choose problems that employ important mathematics, use more than one concept, contain subtleties, or allow for a variety of solutions. In this article, I share students' thinking as they attempted to solve a nonroutine problem from a past contest created by the Mathematical Olympiads for Elementary and Middle Schools. My two major mathematical goals were to elicit creativity in devising solutions and to emphasize the idea that any problem might have several equally valid solutions.

Connecting the North Country: An Information Infrastructure for Manufacturing in Rural New York State

2013 ◽  
Author(s):  
Jonathan R. Slater
Keyword(s):  
New York ◽  
New York State ◽  
Information Infrastructure ◽  
Information Industry ◽  
York State ◽  
The North ◽  
Mcgill University

From the 1994 CAIS Conference: The Information Industry in Transition McGill University, Montreal, Quebec. May 25 - 27, 1994.No abstract available

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