A Fungous Enemy of the Pea Aphid, Macrosiphum pisi (Kaltenbach)

1955 ◽  
Vol 87 (11) ◽  
pp. 503-505 ◽  
Author(s):  
D. M. MacLeod
Keyword(s):  
Nova Scotia ◽  
Fungal Growth ◽  
Fungal Disease ◽  
Pea Aphid ◽  
Large Numbers ◽  
Annapolis Valley ◽  
Orchard Pests

During an investigation into the importance of fungal disease as a factor in the control of orchard pests throughout the Annapolis Valley, Nova Scotia, the haemocoele of large numbers of Macrosiphum pisi (Kaltenbach) was found to be infected with a fungal growth that resulted in death. This fungus was identified from mounted specimens as Empusa (= Entomophthora) aphidis Hoffman.

NATURAL CONTROL OF THE GREY BANDED LEAF ROLLER EULIA MARIANA FERN, IN NOVA SCOTIA ORCHARDS

1937 ◽  
Vol 69 (7) ◽  
pp. 145-146
Author(s):  
F. C. Gilliatt
Keyword(s):  
Nova Scotia ◽  
Natural Control ◽  
Leaf Roller ◽  
Control Factors ◽  
Annapolis Valley ◽  
Orchard Pests

Eulia mariana Fern. was identified in Annapolis Valley orchards about twelve years ago and since has become one of the major orchard pests. Although outbreaks continue to occur, fruit growers should fully appreciate the value of natural control, which in one form or another is always assisting in keeping this insect in check. The various natural control factors may be recorded as follows:(1) Mortality of pupae. (2) Parasites of larvae and pupae. (3) Parasites of eggs. (4) Predators.

Control of the Apple Sucker, Psylla mali Schmidb., by the Fungus Entomophthora sphaerosperma (Fresenius)

1962 ◽  
Vol 94 (8) ◽  
pp. 818-825 ◽  
Author(s):  
R. P. Jaques ◽  
N. A. Patterson
Keyword(s):  
Nova Scotia ◽  
Low Density ◽  
Apple Orchards ◽  
General Increase ◽  
Large Numbers ◽  
Annapolis Valley

The apple sucker, Psylla mali Schmidb., was first noticed in large numbers in Nova Scotia in 1919 and within a few years populations were dense in apple orchards throughout the Annapolis Valley (Dustan, 1924a). Dustan (1924b) and Gilliatt (1924) reported that a disease caused by Entomophthora sphaerosperma (Fresenius) was prevalent among adult apple suckers during this infestation. A decline in numbers followed this early infestation due, it was thought, to the fungus. However, about the time that this early infestation declined sulphur was introduced as a fungicide. General use of sulphur continued until about 1950 and the insect was not a serious pest during this period. This association of low density of the apple sucker with the use of sulphur and the general increase in numbers of the apple sucker after the organic fungicides, ferbam, captan, glyodin, etc. became common in Nova Scotia, led to the belief that sulphur rather than E. sphaerosperma had been largely responsible for the decline of the early infestation in the 1920's.

Annotated List of Spiders (Araneae) from Apple Trees in Nova Scotia

1956 ◽  
Vol 88 (12) ◽  
pp. 697-700 ◽  
Author(s):  
C. D. Dondale
Keyword(s):  
Nova Scotia ◽  
General Nature ◽  
Control Methods ◽  
Apple Trees ◽  
Annotated List ◽  
Main Factors ◽  
Annapolis Valley ◽  
Orchard Pests ◽  
Pest Control Methods

Orchard spiders are important because of their predatory activities and their frequent abundance. They were recngnizcd as a group needing study at the time Pickett et al. (1946) began their long-term investigation of orchard fauna. The identities of the species involved, and their influence on populations of orchard pests, are the main factors to be considered.This paper presents a list of the species collected in the Annapolis Valley of Nova Scotia to date, together with brief comments of a general nature. Spiders have been collected in about 40 orchards since 1954. These orchards were subjected to a variety of cultural and pest control methods by the owners, but most were in sod cultivation, and under modified spray programs as described by Pickett and Patterson (1953). Collecting was done mainly by capping lower branches of trees over an inverted, open umbrella, hut specimens were also taken individually from crevices along tree trunks, and from trays under fumigated trees.

scholarly journals A New Look at Cultivar Preference in Hoplocampa testudinea (Hymenoptera: Tenthredinidae) on Apple in the Annapolis Valley of Nova Scotia, Canada

Insects ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 769
Author(s):  
Suzanne Blatt ◽  
Kim Hiltz
Keyword(s):  
Nova Scotia ◽  
Physicochemical Properties ◽  
Larval Survival ◽  
Larval Performance ◽  
Differential Survival ◽  
Eastern Canada ◽  
Weak Evidence ◽  
Important Pest ◽  
Annapolis Valley ◽  
Hoplocampa Testudinea

(1) Background: The European apple sawfly, Hoplocampa testudinea Klug (Hymenoptera: Tenthredinidae), can be an economically important pest in eastern Canada and shows preference for apple cultivars in Nova Scotia, Canada. We hypothesized that this preference could be due to oviposition by female H. testudinea (preference-performance hypothesis) during the bloom period or differential larval survival during development due to fruitlet physicochemical properties. (2) Methods: Fifteen commercial and experimental apple (Malusdomestica Borkh.; Rosaceae) cultivars located at the Kentville Research and Development Centre (Kentville, Nova Scotia) were chosen and examined for H. testudinea oviposition, larval performance during fruitlet development, fruitlet physicochemical properties and damage assessment at harvest from 2016–2019, inclusive. (3) Results: H. testudinea showed significant cultivar preference during oviposition, during development and at harvest, but the ranking of these cultivars was not the same throughout the season. Total impact by H. testudinea was consistent for most cultivars over multiple years of the study. (4) Conclusion: Correlation of oviposition with damage provided weak evidence for the preference-performance hypothesis. We propose that this relationship is weak due to differential survival of larvae during development.

Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska

Zootaxa ◽  
2019 ◽  
Vol 4666 (1) ◽  
pp. 1-180 ◽  
Author(s):  
VALERIE M. BEHAN-PELLETIER ◽  
ZOË LINDO
Keyword(s):  
British Columbia ◽  
Czech Republic ◽  
Nova Scotia ◽  
New Brunswick ◽  
Northwest Territories ◽  
Prince Edward Island ◽  
National Park ◽  
Undescribed Species ◽  
The Czech Republic ◽  
Large Numbers

This checklist of the oribatid fauna of Canada and Alaska (excluding Astigmata) includes 580 identified species in 249 genera and 96 families. The known fauna of Canada includes 556 identified species in 247 genera, and that of Alaska includes 182 species in 95 genera; 39 of the 42 oribatid superfamilies are represented. We further list ~ 300 species that are currently unidentified, and possibly undescribed. In addition, we list 42 genera that are represented only by unidentified and probably undescribed species. For each species we give combinations and synonymies, specific locations in Alaska and the Provinces and Territories of Canada, habitats, and biogeography.                There are 182 identified species known for Alaska, 152 for Yukon, 122 for Northwest Territories, 58 for Nunavut; 210 for British Columbia, 213 for Alberta, 15 for Saskatchewan, 84 for Manitoba, 167 for Ontario, 210 for Québec, 110 for Nova Scotia, 77 for New Brunswick, 84 for Newfoundland and 6 for Prince Edward Island. The known fauna of Canada is smaller than that of Austria, and is approximately equivalent to that of the Czech Republic. As these countries are much smaller in size than Canada and less ecologically diverse, we consider the Canadian and Alaskan fauna are at most 25% known. The paucity of these data reflects the absence of taxonomic and faunistic studies on Oribatida in State, Provinces or Territories, and especially in the Canadian and Alaskan National Park systems and the hundreds of Provincial Parks.                Despite the almost 90% increase in described species since the catalogue of Marshall et al. (1987), there is a need for focussed, coordinated research on Oribatida in the natural regions throughout Canada and Alaska, and for monographs on families and genera with large numbers of undescribed species, such as Brachychthoniidae, Damaeidae, Cepheidae, Liacaridae, Oppiidae, Suctobelbidae, Hydrozetidae, Phenopelopidae, Scheloribatidae, Haplozetidae and Galumnidae. 

scholarly journals Evidence for the Collection of a Reddish Egret (Egretta rufescens) in Nova Scotia During the 19th Century and its Association with the McCulloch Collection of Birds

2013 ◽  
Vol 126 (4) ◽  
pp. 328
Author(s):  
Eric L. Mills
Keyword(s):  
Nova Scotia ◽  
19Th Century ◽  
Historical Evidence ◽  
Historical Society ◽  
Egretta Rufescens ◽  
Annapolis Valley ◽  
The 19Th Century ◽  
Nova Scotian ◽  
Lines Of Evidence ◽  
Thomas Mcculloch

Based on several lines of evidence, a specimen of an adult white-morph Reddish Egret (Egretta rufescens) now on display in the Macdonald Museum of the Annapolis Valley Historical Society in Middleton, Nova Scotia, probably originated from the 19th-century Nova Scotian bird collections of Thomas McCulloch senior (1776–1843) and his son Thomas (1809–1865), likely between 1838 and 1865. The only other records of this species in Canada are sightings in Nova Scotia in 1965 and 1966. This may therefore be the first specimen evidence of the species in Nova Scotia and Canada. Historical evidence links the specimen with the McCulloch collection of birds, part of which has survived at Dalhousie University.

The Distribution and Abundance of Wireworms in the Annapolis Valley of Nova Scotia

1961 ◽  
Vol 93 (4) ◽  
pp. 276-279 ◽  
Author(s):  
C. J. S. Fox
Keyword(s):  
Nova Scotia ◽  
Important Species ◽  
The North ◽  
Agricultural Areas ◽  
Annapolis Valley ◽  
North And South

The Annapolis Valley is about 100 miles long and is one of the largest and most important of the agricultural areas of the province. The general relief is undulating to gently rolling, with general slopes from the North and South Mountains to the Annapolis and Cornwallis Rivers. The soils of the Annapolis Valley and Hants County were described by Harlow and Whiteside (6) and Cann, Hilchey and Smith (1). A wireworm survey was conducted between 1951 and 1958 since it was suspected that economically important species of European wireworms, namely Agriotes sputator (L.), A. obscurus (L.), and A. lineatus (L.), which occur elsewhere in the province, might be invading the area. The results of this survey are reported here.

Some Notes on the Dipterous Enemies of Aphids Harmful for Apple Growing in Nova Scotia

1961 ◽  
Vol 93 (11) ◽  
pp. 1020-1021 ◽  
Author(s):  
H. H. Evenhuis
Keyword(s):  
Nova Scotia ◽  
Phosphorus Compounds ◽  
Research Station ◽  
Department Of Agriculture ◽  
Eriosoma Lanigerum ◽  
Woolly Apple Aphid ◽  
Aphis Pomi ◽  
Dysaphis Plantaginea ◽  
Annapolis Valley ◽  
Made In

During a stay at the Research Station, Canada Department of Agriculture at Kentville, Nova Scotia, from July 3 to October 16, 1959, I had the opportunity to make some observations on the natural enemies of the woolly apple aphid, Eriosoma lanigerum (Hausm.), the rosy apple aphid, Dysaphis plantaginea (Pass.), and the green apple aplud, Aphis pomi Deg. An inventory of these enemies was made in the Annapolis Valley in apple orchards. sprayed according to the principles of the spray schedule of Dr. A. D. Pickett. This schedule avoids spraying with fungicides and insecticides such as sulphur and phosphorus compounds, which are very harmful to the enemies of a number of pests, studied by Dr. Picktett and his staff (cf. Pickett 1959). The dipterous predators and their enemies are dealt with in this paper.

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