EEB Greenhouse Accession Data for Bursera schlechtendalii. Bursera schlechtendalii is a species of plants with 32 observations. Brief summary. No one has contributed a brief summary to this page yet. Explore what EOL knows about Bursera schlechtendalii. Add a brief summary to this.
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The squirt defense has detrimental effects even on these specialized vein-cutting herbivores. Articles with ‘species’ microformats Commons category link from Wikidata All stub articles. Leaves of 38 species were collected in the field and their chemical constituents extracted in ethyl acetate. Larvae of Blepharida that feed on squirting Bursera festoon themselves with their own feces to form fecal mounds or shields. Wikimedia Commons has media related to Bursera.
In large quantities secretions may also kill small insects by asphyxiation or complete entrapment Dussourd and Denno, ; Becerra, a.
Furthermore, larvae whose natural shields were removed and then reared on a diet of lettuce were defenseless. The significant positive correlation between the strength of squirt response and the first principal component of chemical composition provides some insight into the nature of the relationship between the two defenses Fig.
Many species of plants produce secretions such as resins, latices, gums, and mucilages stored under pressure in networks of canals throughout the cortex of the stems and in the leaves, where they follow the vascular bundles Fahn, ; Metcalfe and Chalk, It furthers the University’s objective of excellence in research, scholarship, and education by publishing bursdra.
The latex of Asclepiadaceae contains cardenolides and cardiac glucosides while the Euphorbiaceae stores diterpenes Seigler, ; Brower et al. Evolutionary chemical trends in the genus are not well known, although recent studies suggest that there is considerable convergence in the production of different volatile compounds by Bursera species Becerra, The milkweed beetles, Tetraopes melanurusT. The plant genus Bursera Burseraceae includes about species distributed from southern United States to Peru.
To understand the role of host chemistry in Blepharida ‘s counterdefensive strategies, we analyzed the chemistry of a Bursera-Blepharida interaction typical of the squirting strategy and another interaction typical of the non-squirting strategy Evans et al. The collection of their feces is the result of a dorsal anus and a neuromuscular propulsion system that conveys feces forward over the larvae Vencl and Morton, A Simpson dominance index that summarizes the relative abundance of compounds i.
View large Download slide. Producing mixtures with more individual compounds requires production of schlechtendallii specific enzymes. Many lineages in the phylogeny of Bursera contain plants from several of these chemical clusters Becerra, The value of the chemical dominance index was much higher for the squirting species than for the non-squirting buraera Fig.
Thus, biotypes that busrera on both mechanical and chemical defenses have more volatile chemical mixtures, while biotypes that depend solely on chemical protection have more complex and less volatile chemical combinations.
CAUDICIFORM Bursera schlechtendalii
Also, on highly squirting individuals, B. It seems then, that the antipredator strategy of B. The antipredatory defense of beetles of the genus Blepharida corresponds to the defenses of the Bursera species they feed on.
The first category includes a variety of substances that are toxic, repellent, or that render plant tissues indigestible to animals. The compounds of the non-releasing species are heavier and the mixture is more complex, as with B.
Bursera trifoliolata Bursera trimera Bursera vasquezyanesii Bursera vejar-vazquezii Bursera velutina Bursera xochipalensis. The genus exhibits great chemical variation in the terpenoid composition the number, identity, and relative amounts of individual terpenoids; Dominguez et al. The schlecytendalii analyses of the body and frass of Blepharida flavocostata revealed almost no match to the constituents found in B. These plants are also susceptible to specialized schlechtendalij that can deactivate canals by cutting veins or trenches Becerra, b.
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Interaction between mechanical and chemical defenses involving terpenoids has been documented in at least one other burxera.
Yet, canal-bearing plants can be vulnerable to phloem-sucking insects that can direct their feeding organs to avoid secretory canals Johnson, However, larvae living on plants with a higher percentage of squirting leaves have higher mortality. The costs are high because many of these enzymes are highly specific for the individual reactions of terpenoid biosynthesis.
The dominance index of its chemical mixture was 0.