OCCURRENCE OF PHYLLOTRETA STRIOLATA, THE STRIPED FLEA BEETLE, IN OPEN PRAIRIE, FOREST, AND PARKLAND OF SASKATCHEWAN (COLEOPTERA: CHRYSOMELIDAE)

1982 ◽  
Vol 114 (5) ◽  
pp. 439-446 ◽  
Author(s):  
L. Burgess
Keyword(s):  
Host Plants ◽  
Laboratory Experiments ◽  
Flea Beetle ◽  
Forest Edge ◽  
The North ◽  
Phyllotreta Striolata ◽  
Arctic Regions ◽  
Adequate Food ◽  
Laboratory Colony ◽  
Cruciferous Plants

AbstractIn Saskatchewan the range of Phyllotreta striolata (F.), a pest of parkland rapeseed crops, includes the open prairie in the southwest and the boreal forest in the north. The population of P. striolata on the open prairie is small, with cruciferous weeds being the major host plants. Cruciferous crops grown on the open prairie will almost certainly attract some P. striolata. The population of P. striolata in the forest is substantial, and the range extends northward into arctic regions. Although adults of P. striolata feed upon cruciferous plants growing in the forest, these plants do not appear abundant enough to constitute an adequate food supply. In addition, the identity of the major host plants of the larvae in the forest is unknown. In laboratory experiments, adults of P. striolata were attracted to and attempted to feed upon seven species of forest mosses; however, attempts to maintain a laboratory colony of P. striolata on one of the more abundant mosses were unsuccessful. Forest inhabiting P. striolata attacked rape planted in forest clearings, and therefore probably would infest rape crops grown along the forest edge or in newly cleared areas.

HOST DISCRIMINATION BY A CRUCIFER-FEEDING FLEA BEETLE, PHYLLOTRETA STRIOLATA (F.) (COLEOPTERA: CHRYSOMELIDAE)

1990 ◽  
Vol 122 (5) ◽  
pp. 817-824 ◽  
Author(s):  
R.J. Lamb ◽  
P. Palaniswamy
Keyword(s):  
Small Groups ◽  
Host Selection ◽  
Raphanus Sativus ◽  
Host Plants ◽  
Flea Beetle ◽  
Natural Populations ◽  
Host Discrimination ◽  
Phyllotreta Striolata ◽  
Feeding Experiments ◽  
Cruciferous Plants

AbstractThe flea beetle, Phyllotreta striolata (F.), was attracted to the cruciferous plants Brassica oleracea L. and Raphanus sativus L., but not to B. campestris L. and B. napus L. which are important natural host plants, nor to Pisum sativum (L.), a legume. The presence or absence of attraction was demonstrated by exposing small groups of caged plants to natural populations and trapping beetles near the plants. In choice and no-choice laboratory feeding experiments, P. striolata fed on eight Cruciferae in the genera Brassica, Raphanus, and Sinapis but not on P. sativum. Phyllotreta striolata fed less on S. arvensis L. and S. alba L. than on plants in the other genera. Within Brassica, B. oleracea, B. napus, and B. campestris were preferred over B. juncea (L.) Czern and B. nigra (L.) Koch. Discrimination at the attraction phase of host selection did not account for discrimination shown in laboratory feeding experiments nor in the natural attack of flea beetles on cruciferous crops.

PHAGODETERRENCY INDUCED BY TWO CRUCIFEROUS PLANTS IN ADULTS OF THE FLEA BEETLE PHYLLOTRETA STRIOLATA (COLEOPTERA: CHRYSOMELIDAE)

1983 ◽  
Vol 115 (9) ◽  
pp. 1209-1214 ◽  
Author(s):  
J. Meisner ◽  
B. K. Mitchell
Keyword(s):  
Flea Beetle ◽  
Chemical Compounds ◽  
Feeding Deterrents ◽  
Thlaspi Arvense ◽  
Phyllotreta Striolata ◽  
Alkaloid Fraction ◽  
Cruciferous Plants

AbstractThe two cruciferous plants Thlaspi arvense and Lunaria annua are largely unacceptable to the striped flea beetle, Phyllotreta striolata, which normally feeds on cruciferous plants. Results suggest that these plants contain chemical compounds that act as feeding deterrents to the beetles. Methanol fractions of the leaves of both plants deterred feeding when added to the surface of acceptable radish leaves. An alkaloid fraction of Lunaria annua was, surprisingly, not deterrent. Evidence suggests that saponins in both Lunaria annua and Thlaspi arvense may be a major reason for the low acceptability of these plants as food for Phyllotreta striolata. Commercial saponins are highly deterrent at concentrations of 0.05% and above.

Some effects of different Plantago species on feeding preference and egg laying in the flea beetle Dibolia borealis Chev. (Chrysomelidae)

1978 ◽  
Vol 56 (7) ◽  
pp. 1507-1513 ◽  
Author(s):  
Wayne R. Hawthorn
Keyword(s):  
North American ◽  
Native Species ◽  
Host Plants ◽  
Plantago Lanceolata ◽  
Flea Beetle ◽  
Feeding Preference ◽  
Food Resources ◽  
Egg Laying ◽  
Plantago Major ◽  
The North

The differential feeding and egg-laying responses by overwintered adults of the North American chrysomelid beetle Dibolia borealis Chev. to native and introduced host plants of the genus Plantago were investigated. Adults exhibited a feeding preference for Plantago rugelii (native species) > Plantago major (introduced) > Plantago lanceolata (introduced). However, females fed P. rugelii and P. lanceolata laid fewer eggs than females fed P. major. In the field, D. borealis laid more eggs on P. major and more adults emerged from plants of this species than from P. rugelii. The ecological and evolutionary implications of feeding and egg laying on different food resources are discussed.

CHAETOCNEMA CONCINNA (MARSHAM, 1802), A EUROPEAN FLEA BEETLE INTRODUCED IN NORTH AMERICA (COLEOPTERA: CHRYSOMELIDAE: ALTICINAE)

1990 ◽  
Vol 122 (4) ◽  
pp. 647-650
Author(s):  
Laurent Lesage
Keyword(s):  
Nova Scotia ◽  
North America ◽  
Prince Edward Island ◽  
Host Plants ◽  
Flea Beetle ◽  
Collection Data ◽  
First Time

AbstractChaetocnema concinna (Marsham, 1802), a European flea beetle, is reported for the first time from Canada. Preliminary collection data indicate that it may feed on the same host plants as in Europe. It has been collected to date in Prince Edward Island, Nova Scotia, and Maine.

Phyllotreta striolata. [Distribution map].

1994 ◽  
Author(s):  
Keyword(s):  
New York ◽  
North Carolina ◽  
West Bengal ◽  
Flea Beetle ◽  
Peninsular Malaysia ◽  
Distribution Map ◽  
Phyllotreta Striolata ◽  
Kurile Islands ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Phyllotreta striolata (Fabricius) Coleoptera: Chrysomelidae, Alticinae Striped flea beetle, turnip flea beetle. Attacks turnip, cabbage, rape and other Cruciferae. = Phyllotreta vittata(Fabricius) Information is given on the geographical distribution in EUROPE, Albania, Austria, Belgium, Bulgaria, Crete, Czech, Republic Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Irish, Republic Italy, Luxembourg, Netherlands, Norway, Poland, Slovakia, Spain, Sweden, Switzerland, United Kingdom, Yugoslavia, RUSSIA, Amur, Irkutsk, Kamchatka, Karelia, Khabarovsk, Kiev, Leningrad, Magadan, Primorye, Ryazan, Sakhalin, Smolensk, ASIA, Andaman Islands, Bhutan, Burma, China, Anhui, Fujian, Gansu, Guangdong, Guangxi, Hainan, Heilongjiang, Hubei, Hunan, Jiangsu, Xizhang, Hong Kong, India, Assam, Tripura, West Bengal, Indonesia, Java, Sumatra, Japan, Korea, Kurile Islands, Malaysia, Sarawak, Peninsular Malaysia, Mongolia, Myanmar, Nepal, Okinawa, Sikkim, Singapore, Taiwan, Thailand, Tibet, Vietnam, NORTH AMERICA, Canada, Alberta, British Columbia, Manitoba, Ontario, Quebec, Saskatchewan, USA, California, Connecticut, Florida, Illinois, Kansas, Louisiana, Maryland, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Texas, Virginia, Wisconsin.

A massive summer-kill of the dog-whelk, Nucella lapillus, on the north Cornwall coast in 1995: freak or forerunner?

1999 ◽  
Vol 79 (1) ◽  
pp. 103-109 ◽  
Author(s):  
P.E. Gibbs ◽  
J.C. Green ◽  
P.L. Pascoe
Keyword(s):  
High Mortality ◽  
Laboratory Experiments ◽  
Algal Bloom ◽  
Extended Period ◽  
Littorina Littorea ◽  
Nucella Lapillus ◽  
Sewage Outfall ◽  
The North ◽  
Algal Toxicity ◽  
Calm Weather

In the summer of 1995 a massive kill of the dog-whelk, Nucella lapillus, occurred in Bude Bay on the north Cornish coast. High mortality was detectable along 12 km of shoreline. The only other intertidal species affected appeared to be another neogastropod, Ocenebra erinacea. The cause of the kill is unknown but the evidence suggests that it occurred in early July following an extended period of warm, calm weather in June. Possible causes of this event are discussed: algal toxicity may have been responsible since an algal bloom was detected offshore in July in the area. Laboratory experiments exposing gastropods to different species and concentrations of microalgae, designed to test whether N. lapillus is more sensitive than Monodonta lineata and Littorina littorea, gave inconclusive results. No comparable kill has occurred in the Bude area for at least 20 y, but it is suggested that nutrients from a newly-constructed, offshore sewage outfall may now stimulate local algal bloom development during calm weather periods.

Extended distribution and host plants of Nameriophyes sapidae Xue & Zhang 2008 (Acari: Eriophyidae) in New Zealand

Zootaxa ◽  
2011 ◽  
Vol 2796 (1) ◽  
pp. 67
Author(s):  
NICHOLAS A. MARTIN ◽  
ZHI-QIANG ZHANG
Keyword(s):  
New Species ◽  
New Zealand ◽  
Plant Species ◽  
Host Plants ◽  
Mite Species ◽  
Native Plant ◽  
Native Plant Species ◽  
The North ◽  
A New Species

Nameriophyes sapidae Xue & Zhang (Acari: Eriophyidae) was found on transplanted nikau palms, Rhopalostylis sapida (H. Wendl. & Drude) in Auckland, New Zealand and described as a new species (Xue & Zhang 2008). Although R. sapida is a native plant species, it was not known if this mite species was indigenous or adventive because it was collected only from transplanted palms in unnatural gardens in Auckland. A survey was undertaken of R. sapida and the Kermadec Island palm, Rhopalostylis baueri (Hook. f.) Wendl. & Drude in the northern part of the North Island and Chatham Island.

scholarly journals Wild salmonids are running the gauntlet of pathogens and climate as fish farms expand northwards

2020 ◽  
Author(s):  
Knut Wiik Vollset ◽  
Robert J Lennox ◽  
Jan Grimsrud Davidsen ◽  
Sindre Håvarstein Eldøy ◽  
Trond E Isaksen ◽  
...  
Keyword(s):  
Cold Water ◽  
Arctic Charr ◽  
Fish Farming ◽  
Fish Farms ◽  
The North ◽  
Arctic Regions ◽  
Northern Areas ◽  
Infection Pressure ◽  
High Infection ◽  
Research Questions

Abstract Salmon farming has multiplied from a side business of coastal farmers to one of the world's major aquaculture species. This has dramatically altered the disease dynamics between farmed and wild salmonids. As salmon fish farming has increased, new restrictions have been enforced to combat emerging density-dependent impacts of pathogen spillover. In most northern and arctic regions, the effects of pathogens from fish farms on wild salmonids have been minimal for two key reasons: (i) relative low density of fish farms in the north and (ii) cold water temperatures. However, both factors are set to change dramatically. On one side, there is an increasing interest in utilizing northern areas for fish farming due to limited capacity for expansion in mid-latitude regions. On the other side, climate change is rapidly changing these northern ecosystems. High-latitude regions inhabit some of the largest remaining wild Atlantic salmon populations in the world along with sea trout and Arctic charr. Wild salmonids in the north have most likely seldom been exposed to high infection pressure, and we question how these populations will cope with changes that are coming. We identify 12 research questions emerging from these imminent changes and discuss methodologies for addressing them. We conclude that policies related to fish farming must consider uncertainties with respect to pathogen dynamics in the north until these research questions are fully addressed.

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