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Topic: Lerp (biology)


  
  Red Gum Lerp
The leaves are infested with the red gum lerp psyllid (Glycaspis brimblecombei), an Australian insect discovered in Los Angeles County in 1998.
Several whitish-gray lerps are visible on the leaves in this photograph.
Several whitish lerps are visible on the leaves in this photograph.
waynesword.palomar.edu /rgumlerp.htm   (982 words)

  
 Biology | TutorGig.co.uk Encyclopedia   (Site not responding. Last check: 2007-10-14)
Freshwater biology is a field of biology that studies animal and plant life found in all areas of fresh water.
In biology, a tribe is a scientific classification taxonomic classification in between family biology...
Evolutionary biology is a subfield of biology concerned with the origin and descent of species, as well as their change over time, i.e.
www.tutorgig.co.uk /encyclopedia/sencyclo.jsp?keywords=Biology   (402 words)

  
 Lerp - Wikipedia, the free encyclopedia
In biology, a lerp is a structure produced by larvae of psyllid insects as a protective cover.
In computing and mathematics, lerp is a quasi-acronym for linear interpolation
This is a disambiguation page — a navigational aid which lists pages that might otherwise share the same title.
en.wikipedia.org /wiki/Lerp   (117 words)

  
 Associated News Page
However, unlike scale coverings, the lerps are composed mostly of crystallized honeydew (the sugary fluid that homopteran insects excrete) and, in this case, resemble small, white, hemispherical caps that grow up to about 1/8 inch diameter and 1/8 inch tall.
Redgum lerp psyllid in California is attacked by several natural enemies, but it's not currently known if these natural enemies are important in helping to control this pest.
Birds are major predators of lerp psyllids in Australia and have been observed feeding on redgum lerp psyllids in California.
www.associatedlandscape.com /news.htm   (2389 words)

  
 Australian Biological Resources Study - Publications - Special Publications   (Site not responding. Last check: 2007-10-14)
This book discusses psylloid biology and provides a key to genera, comprehensive information on host plants and natural enemies, looks at economic significance, and gives a full listing of Australian species and their broad distributions.
Biology, Identification and Conservation of Restionaceae and Allied Families.
Comprehensive background information on taxonomy, biology and conservation, identification keys, species descriptions, magnificent illustrations by Ellen Hickman of every species, and detailed anatomical micrographs of stem and roots.
www.deh.gov.au /biodiversity/abrs/publications/special   (494 words)

  
 Projects   (Site not responding. Last check: 2007-10-14)
The biosystematics of lerp parasitoids in the Adelaide region.
The project would examine the population structure and biology of these three species and examine their relative life history patterns in a number of areas that have undergone different past fire or disturbance histories to determine whether there are optimal conditions for the management of these primary dune stabilising species.
Mike Geddes were: a study of the population biology of mud cockles (Katelysia spp.) in the Port River; the early life-history of Yellowfin whiting (Sillago schomburgkii) based on otolith microstructure; and the life-history and population biology of a freshwater species, the Australian smelt (Retropinna semoni).
www.adelaide.edu.au /sciences/env_biol2/study/honours/proj   (14327 words)

  
 Sciences | School of ...   (Site not responding. Last check: 2007-10-14)
Preliminary biology of a native earthworm Spencierella sp.
Glover, C.J.M. The taxonomy and biology of Chlamydogobius eremius (Zietz 1896).
Aspects of the life-history and population biology of the Australian smelt, Retropinna semoni (Weber 1895) (Salmoniformes: Retropinnidae) for a lower Murray River population, South Australia.
www.ees.adelaide.edu.au /research/publications.html   (12549 words)

  
 New Page   (Site not responding. Last check: 2007-10-14)
The insect was subsequently identified as the red gum lerp psyllid (RLP), Glycaspis brimblecombei
Psyllid Biology: Psyllids are small insects that suck sap from plants.
The lerp is the conspicuous white scale-like cone seen on infested eucalyptus leaves.
www.ci.manhattan-beach.ca.us /pubworks/Maintenance/lerp/kabashim.html   (822 words)

  
 Spotted Gum Lerp Psyllid
If the lerp is removed or disturbed, the exposed larva will crawl away from the site.
  The lerp is constructed initially as globules of glabrous secretion which are extended over the body from the sides to the centre of the roof.
The lerp covering may provide psyllid larvae with some protection from spray contact.
acwm.co.la.ca.us /scripts/Spotted.htm   (1860 words)

  
 Linear interpolation
The basic linear interpolation operation is so commonly used in computer graphics that it is known as a lerp.
Lerp operations are built into the hardware of all modern computer graphics processors.
Linear interpolation has been used since antiquity for filling the gaps in tables, often with astronomical data.
www.sciencedaily.com /encyclopedia/linear_interpolation   (431 words)

  
 09.10.2003 - Donald Dahlsten, leading expert in biological control and forest entomology, dies at 69
BERKELEY – Donald Lee Dahlsten, a professor of insect biology at the University of California, Berkeley, whose work in biological control gave California officials a powerful weapon in their fight against a fast-spreading tree pest, died Wednesday, Sept. 3.
The efficacy of the wasp against red gum lerp psyllid is still being evaluated, but it has thus far been most successful in the state's coastal areas.
His other projects included research on how the methods used to control Pierce's Disease, which affects grapevines and is spread by the glassy-winged sharpshooter, impacted riparian habitats, and on the ecological impact of the Sudden Oak Death pathogen, a fungus-like algae that has killed tens of thousands of oak trees throughout the state.
www.berkeley.edu /news/media/releases/2003/09/10_Dahlsten.shtml   (1245 words)

  
 CSIRO PUBLISHING - Wildlife Research   (Site not responding. Last check: 2007-10-14)
Nestlings were fed mostly insects (58% of feeds), and carbohydrates (nectar and lerp) made up the rest of their diet.
Fledglings, however, were fed mainly carbohydrates (nectar and lerp comprised 61.2% of all items) while protein from insects was the other major component of their diet.
This study highlights the importance of insects and lerp in the diet of juvenile regent honeyeaters, and the diversity of plant species on which their parents foraged.
www.publish.csiro.au /nid/144/paper/WR97078.htm   (235 words)

  
 Sacramento County Horticultural Bytes - Master Gardener - Sacramento County   (Site not responding. Last check: 2007-10-14)
The red gum lerp psyllid (Glycaspis brimblecombei) is a sucking insect that causes waxy droppings and defoliation of eucalyptus trees.
When fully formed in spring, the lerp is about 8 mm long, horn shaped, and tapering from about 0.5 to 4 mm wide and is yellow to pale brown.
Research on the biology, distribution, and abundance of this psyllid is being conducted at UC Davis and UC Berkeley.
cesacramento.ucdavis.edu /Master_Gardener/Horticultural_Bytes.htm   (2481 words)

  
 2000 CDFA BC Program Annual Report   (Site not responding. Last check: 2007-10-14)
The red gum lerp psyllid (RGLP), Glycaspis brimblecombei Moore (Homoptera: Psylloidea), was first reported in California in June 1998 in the City of El Monte, Los Angeles County.
Red gum lerp psyllid has spread throughout the state at an alarming rate and has rapidly become one of the most serious pests attacking eucalyptus in California.
Red gum lerp psyllid reproduction, development and parasitism on 8-leaf sample of red gum eucalyptus.
134.186.235.120 /phpps/ipc/biocontrol/annuals/2000annual/2000-08-lerppsyllid.htm   (833 words)

  
 Publications
Biology of Bracon celer, as a parasitoid of the olive fruit fly.
Daane, K. M., and Johnson, M. Biology and ecology of the glassy-winged sharpshooter in the San Joaquin Valley, pp.
Daane, K. M., and Johnson, M. Biology and ecology of the glassy-winged sharpshooter in the San Joaquin Valley.
daane.uckac.edu /Publications/publications1.htm   (7174 words)

  
 California's Scourge Today - The Lerp Psyllid   (Site not responding. Last check: 2007-10-14)
Samples were taken and the insect was identified as the lerp psyllid (Glycaspis brimblecombei).
The lerp is a protected structure where the nymph lives.
However, since the area is infiltrated with this bug, the new growth may get several lerps, but as they feed on the tree, they take the chemical into their system and die before they have time to lay eggs.
www.igin.com /Landscaping/lerp.html   (1376 words)

  
 Encyclopedia: Leadbeater's Possum
In biology, binomial nomenclature is a standard convention used for naming species.
Their diet is omnivorous: they take a range of saps and exudates, lerps, and a high proportion of arthropods which they find under the loose bark of eucalypts: spiders, crickets, beetles, and the like.
Plant exudates make up 80% of their energy intake, but the protein provided by the arthropods is essential for successful breeding.
www.nationmaster.com /encyclopedia/Leadbeater%27s-Possum   (1282 words)

  
 The biology of Psyllaephagus bliteus (Hymenoptera: Encyrtidae), a parasitic wasp that attacks the red-gum lerp psyllid   (Site not responding. Last check: 2007-10-14)
The biology of Psyllaephagus bliteus (Hymenoptera: Encyrtidae), a parasitic wasp that attacks the red-gum lerp psyllid
University of California at Berkeley, Insect Biology, 201 Wellman Hall #3112, Berkeley, CA Psyllaephagus bliteus Riek (Hymenoptera: Encyrtidae) was released throughout California in 2000 and 2001 to control the red-gum lerp psyllid, Glycaspis brimblecombei Moore (Hemiptera: Psylloidea).
Observations of host-handling behavior suggest that the large lerps of 4th and 5th instars impede oviposition.
esa.confex.com /esa/2004/techprogram/paper_16410.htm   (247 words)

  
 Psyllid biology and eucalypt defoliation
This Agriculture Note provides advice on the biology of psyllids and their association with defoliation of native eucalypts in Victoria.
For example, White lace lerp shows a strong preference for the closely related E. camaldulensis (river red gum) and E. blakelyi (Blakely's red gum), while red gum basket lerp is generally found only on E. camaldulensis.
It is commonly thought that the lerp structure protects the psyllid insect from predation and desiccation during warm/hot weather.
www.nre.vic.gov.au /dpi/nreninf.nsf/LinkView/BB585B62E08E21EDCA256BCF000BBDE9230696C00A67D20D4A256DEA0027CFDF   (1183 words)

  
 2003 UC IPM Annual Report: Competitive Grants Programs
Evaluation of biological control of the red gum lerp psyllid, Glycaspis brimblecomei Moore, on Eucalyptus camaldulensis in California.
Biology and overwintering of the corn leafhopper, Dalbulus maidis, and corn stunt spiroplasm, Spiroplasma kunkelii, and epidemiology of corn stunt disease in the San Joaquin Valley.
Reproductive biology and populations genetics of fountain grass (Pennisetum setaceum Forskal), an invasive species in California.
www.ipm.ucdavis.edu /IPMPROJECT/2003/03competitivegrants.html   (2053 words)

  
 Andrew Lawson Ph.D - California State University Fresno
Responsible for upper-division courses in integrated pest management, biological control, and economic entomology as well as graduate courses in experimental design and analysis and advanced pest management.
Dahlsten, D. Rowney, A. Lawson, K. Robb, L. Costello, J. Kabashima, The Red Gum Lerp Psyllid, a new pest of Eucalyptus species in California.
"The red gum lerp psyllid - a new pest of Eucalyptus in California." D.L. Dahlsten, D.L. Rowney, A.B. Lawson, K.A. Davidson, W.E. Chaney, K. Robb, J.N. Kabashima, and L. Costello.
cast.csufresno.edu /faculty/lawson/alawson_cv.html   (1474 words)

  
 Australian Biological Resources Study - Publication - Australian Psylloidea jumping Plantlice and Lerp Insects
Damage from heavy lerp infestations on eucalypts is a familiar sight to most urban Australians, but few are aware of the insects causing this damage or their life cycles.
This book discusses psylloid biology and gives a key to genera, comprehensive information on host plants and natural enemies, looks at economic significance, and gives a full listing of Australian species and their broad distributions.
It sets the scene for further much-needed research on the group and, containing beautiful illustrations, is a valuable handbook for professionals, amateurs and students.
www.deh.gov.au /biodiversity/abrs/publications/special/psylloidea.html   (212 words)

  
 psyllid acoustics Cardiaspina
The photos show examples of 'lerps' which are protective coverings of sugar and carbohydrate exudates produced by the nymphs.
Taylor (1962) described the species based on the slight difference of the lerp and the occurrence on different Eucalyptus host plants.
As some Cardiaspina species cause conspicuous leaf necrosis during feeding, and in outbreak years heavily infested trees may die completely, the reproductive biology and population dynamics of this psyllid group is of broad ecological interest.
www.psyllids.org /CardiaspinaSOUND.htm   (510 words)

  
 Glycaspis brimblecombei   (Site not responding. Last check: 2007-10-14)
More data is needed on the biology of the pest, its potential of establishment in Europe and economic impact.
Red gum lerp psyllid, Glycaspis brimblecombei by S.E. Halbert.
Red gum lerp psyllid, Glycaspis brimblecombei Moore (Homoptera: Psyllidae) by W.T. Nagamine and R.A. Heu, July 2001.
www.eppo.org /QUARANTINE/Alert_List/insects/glybrim.htm   (399 words)

  
 CSIRO PUBLISHING - EMU: Austral Ornithology   (Site not responding. Last check: 2007-10-14)
Gleaning for lerp and hawking for insects comprised 35% and 5% of their foraging time, respectively.
In both years nectar-feeding was highest in the morning and late afternoon and lowest in the middle of the day, when insect and lerp consumption peaked.
The degree of flexibility in the foraging repertoire of the Regent Honeyeater is not unusual among Australian honeyeaters, although it indicates that different types of food and a broad range of plants, particularly mature eucalypts, have to be protected and properly managed to save this declining woodland bird.
www.publish.csiro.au /nid/96/paper/MU9837.htm   (278 words)

  
 Pardalote
Pardalotes spend most of their time high in the outer foliage of trees, feeding on insects, spiders, and above all lerps (a type of sap sucking insect).
Their role in controlling lerp infestations in the eucalyptus forests of Australia may be significant.
They generally live in pairs or small family groups but sometimes come together into flocks after breeding.
www.sciencedaily.com /encyclopedia/pardalote   (551 words)

  
 Red Gum Lerp Psyllid - Main Page
The red gum lerp psyllid, a new pest on California's red gum eucalyptus trees, was discovered in 1998 in Los Angeles County, and has currently spread throughout much of the state.
The psyllids, small insects that suck sap from leaves, are, like the eucalyptus, native to Australia.
In cooperation with many state and local agencies and other UC units, we are monitoring the psyllid's populations, studying its biology, and implementing a biological control program with introduced parasitoid natural enemies.
nature.berkeley.edu /biocon/dahlsten/rglp   (225 words)

  
 Dictionary of Meaning www.mauspfeil.net
* In biology, a lerp (biology) lerp is a structure produced by larvae of psyllid insects as a protective cover.
* In computing and mathematics, lerp (computing) lerp is a quasi-acronym for linear interpolation {{disambig}}
There you find a list of all editors and the possibility to edit the original text of the article Lerp.
www.mauspfeil.net /Lerp.html   (92 words)

  
 UC IPM Annual Report, 2001: Exotic Pests and Diseases Research Program
Reproductive biology and populations genetics of fountain grass (Penniseum setaceum Forskal), an invasive species in California.
Whisson, Wildlife, Fish and Conservation Biology, UC Davis; A. Engilis, Wildlife, Fish and Conservation Biology, UC Davis.
parasitic on the redgum lerp psyllid, Glycaspis brimblecombei Moore.
www.ipm.ucdavis.edu /IPMPROJECT/2001/01cepr.html   (373 words)

  
 People/Karen Sime.htm   (Site not responding. Last check: 2007-10-14)
Sime, K.R. and Wahl, D.B. Taxonomy, mature larva, and observations on the biology of Gnamptopelta obsidianator (Brullé) (Hymenoptera: Ichneumonidae, Ichneumoninae).
Sime, K.R. and Wahl, D.B. Cladistics and biology of the Callajoppa genus-group (Hymenoptera: Ichneumonidae, Ichneumoninae) Zoological Journal of the Linnean Society 134: 1-56.
Daane, K.M, Sime, K.R., Dahlsten, D.L., Andrews, J.W., and Zuparko, R.L. The biology of Psyllaephagus bliteus Riek (Hymenoptera: Encyrtidae), a parasitoid of the red gum lerp psyllid (Hemiptera: Spondyliaspididae).
daane.uckac.edu /People/Karen%20Sime.htm   (882 words)

  
 The Hemidesmosomal Protein Bullous Pemphigoid Antigen 1 and the Integrin beta 4 Subunit Bind to ERBIN. MOLECULAR ...
Division of Cell Biology, The Netherlands Cancer Institute, 1066 CX Amsterdam, The Netherlands
The bullous pemphigoid antigen 1 (eBPAG1) is a constituent of hemidesmosomes (HDs), cell-substrate adhesion complexes in stratified
Copyright © 2001 by the American Society for Biochemistry and Molecular Biology.
www.jbc.org /cgi/content/abstract/276/35/32427   (640 words)

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