U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Biological Control of Pests Research: Stoneville, MS
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Southeast Area Stoneville, Mississippi Biological Control of Pests Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Rojas, Maria

                                                         - *Guadalupe*item
                                            Morales Ramos, Juan
  Submitted to: Experimental and Applied Acarology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 12/26/2008
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary: The two-spotted spider mite has successfully infested over 150 species of plants; including vegetables, ornamentals, high value crops, and trees and causes hundred of millions of dollars in damage each year. The effect of plants nutrients on the fitness of the two-spotted spider mite was determined.  This information is necessary to develop improved artificial diets for the primary mite predator Phytoseiulis persimilis as well as other mite predators.
                                Technical Abstract: Chemical analyses of two-spotted spider mite, Tetranychus urticae (Koch), and 3 of their host plants, Phaseolus vulgaris L., Phaseolus lunatus L., and Vigna unguiculata L. show that the content of total soluble protein, carbohydrates, and anions in the mites varies independently  from the concentration detected on the host plant where they were reared. Concentrations of chlorides, fluorides, and phosphates showed significant differences among the tissues of the 3 host plants, but did not show significant differences among spider mites developing on the 3 plant species. Similarly, plant tissue showed significant differences in concentrations of maltose among the 3 plant species, but no significant differences were observed on spider mites developing on the different plant species. Plant tissue had significantly higher concentrations of chlorides, nitrates, fructose, galactose, and glucose and significantly lower concentrations of phosphates and glucosamine than found in spider mite tissue. Protein content did not differ among the different plant tissues, but was significantly lower for mites developing on P. lunatus than for mites developing on the other 2 host plant species. Spider mites showed significantly higher concentrations of protein in their tissues than their host plants. The significance of protein content differences as an indicator of mite fitness and as a tool to determine host suitability is discussed.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov