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The pine wilt nematode is spread by a number of bark beetles and wood borers, typically associated with the genus Monochamus of pine sawyers. [17] Pine sawyers lay their eggs in the bark of dead timber. The growing larva feeds on the wood and pupates in the resulting cavity. Nematodes of the third juvenile stage congregate in the cavity around ...
Heterodera is a genus of nematodes in the family Heteroderidae. Members of the genus are obligate parasites and different species attack different crops, often causing great economic damage. The genus is unique among nematode genera because of the ability of the female to transform into a tough, brown, cyst which protects the eggs which have ...
Gould's Ecoregions of Texas (1960). [1] These regions approximately correspond to the EPA's level 3 ecoregions. [2] The following is a list of widely known trees and shrubs found in Texas. [3] [4] [5] Taxonomic families for the following trees and shrubs are listed in alphabetical order by family. [6]
Enoplia is regarded as the earliest nematode branch, according to recent phylogenetic analysis. [5] Enoplia is mentioned as a sister clade to Dorylaima and Chromadoria. [ 5 ] [ 6 ]
Invasive terrestrial plants in Texas; Picture Scientific name Common name Family Ailanthus altissima: tree of heaven Simaroubaceae (quassia-wood family) Albizia julibrissin: mimosa Fabaceae (pea family) Alhagi maurorum: camelthorn Fabaceae (pea family) Alliaria petiolata: garlic mustard Brassicaceae (mustard family) Allium vineale: wild garlic
Xiphinema americanum, the American dagger nematode, is a species of plant pathogenic nematodes.It is one of many species that belongs to the genus Xiphinema.It was first described by N. A. Cobb in 1913, who found it on both sides of the United States on the roots of grass, corn, and citrus trees. [1]
Leucophyllum frutescens is an evergreen shrub in the figwort family, Scrophulariaceae, native to the U.S. state of Texas, where it is the official "State Native Shrub of Texas", [2] and to the states of Coahuila, Nuevo León, and Tamaulipas in northern Mexico.
Whole blood with microfilaria worm, giemsa stain. L. loa worms have a simple structure consisting of a head (which lacks lips), a body, and a blunt tail. The outer body of the worm is composed of a cuticle with three main layers made up of collagen and other compounds which aid in protecting the nematodes while they are inside the digestive system of their host.