Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
Testing a Claim about Mean: Unknown Population SD01:21

Testing a Claim about Mean: Unknown Population SD

A complete procedure of testing a hypothesis about a population mean when the population standard deviation is unknown is explained here.
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used; instead...
Methods of Classification and Identification01:28

Methods of Classification and Identification

Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Toxicity of Nanoemulsified <i>Eugenia uniflora</i> (Myrtaceae) Essential Oil to <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae) and Selectivity to <i>Trichogramma pretiosum</i> (Hymenoptera: Trichogrammatidae).

Plants (Basel, Switzerland)·2026
Same author

Detection and Quantification of Sitophilus zeamais (Coleoptera: Curculionidae) Infestation in Rice Seeds using the X-Ray Technique and Influence on Their Quality.

Neotropical entomology·2025
Same author

Side effects of insecticides used in soybean and corn on the egg parasitoid Telenomus remus (Hymenoptera: Scelionidae).

Ecotoxicology (London, England)·2025
Same author

Effects of Essential Oils on Biological Characteristics and Potential Molecular Targets in <i>Spodoptera frugiperda</i>.

Plants (Basel, Switzerland)·2024
Same author

The interplay between temperature and an insecticide mixture modulates the stimulatory response of sublethally exposed Myzus persicae.

Ecotoxicology (London, England)·2024
Same author

Natural parasitism of the coffee leaf miner: climate factors, insecticide, and landscape affecting parasitoid diversity and their ecosystem services in coffee agroecosystems.

Bulletin of entomological research·2023

Related Experiment Video

Updated: Jun 14, 2026

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.
10:14

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.

Published on: December 12, 2012

10.6K

Body Part Selection for Size Classification of Two Trichogramma Species.

Diego de Souza1, Geraldo Andrade Carvalho2, Lucas Del Bianco Faria3

  • 1Graduate Program in Entomology, Dept of Entomology, Federal Univ of Lavras, Lavras, MG, Brazil. desouza.diego@live.com.

Neotropical Entomology
|July 4, 2024
PubMed
Summary

Accurately measuring Trichogramma parasitoid size is crucial for biological control. This study found that using the wing or ovipositor provides the best size estimation, improving upon traditional single-measurement methods.

Keywords:
Biological controlBody sizeEgg parasitoidHost eggMass rearingQuality controlTrichogrammatidae

More Related Videos

Author Spotlight: Efficient Venom Extraction Method from Trichogramma Parasitoid Wasps
03:53

Author Spotlight: Efficient Venom Extraction Method from Trichogramma Parasitoid Wasps

Published on: October 6, 2023

1.5K
Author Spotlight: Investigating Wolbachia-Induced Thelytokous Parthenogenesis and Genetic Toolkit Development Through RNA Interference
05:29

Author Spotlight: Investigating Wolbachia-Induced Thelytokous Parthenogenesis and Genetic Toolkit Development Through RNA Interference

Published on: November 21, 2023

1.3K

Related Experiment Videos

Last Updated: Jun 14, 2026

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.
10:14

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.

Published on: December 12, 2012

10.6K
Author Spotlight: Efficient Venom Extraction Method from Trichogramma Parasitoid Wasps
03:53

Author Spotlight: Efficient Venom Extraction Method from Trichogramma Parasitoid Wasps

Published on: October 6, 2023

1.5K
Author Spotlight: Investigating Wolbachia-Induced Thelytokous Parthenogenesis and Genetic Toolkit Development Through RNA Interference
05:29

Author Spotlight: Investigating Wolbachia-Induced Thelytokous Parthenogenesis and Genetic Toolkit Development Through RNA Interference

Published on: November 21, 2023

1.3K

Area of Science:

  • Entomology
  • Biological Control
  • Morphometrics

Background:

  • Body size is a key indicator of parasitoid and predator quality.
  • Larger organisms generally exhibit better biological parameters and are more easily located by natural enemies.
  • The genus Trichogramma (Hymenoptera: Trichogrammatidae) is vital in biological control, but accurate size assessment is challenging.

Purpose of the Study:

  • To identify the most reliable morphological measurements for estimating the body size of Trichogramma parasitoids.
  • To compare the effectiveness of various body parts (antennae, scutellum, ovipositor, tibia, wing) in size determination.
  • To validate the use of Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA) for selecting optimal morphometric indicators.

Main Methods:

  • Microscopic imaging and measurement of multiple body parts from Trichogramma pretiosum and Trichogramma galloi specimens.
  • Application of Principal Component Analysis (PCA) to assess how different body parts represent overall size.
  • Utilisation of Linear Discriminant Analysis (LDA) to determine the single most representative body part for size estimation.

Main Results:

  • PCA indicated that all measured body parts (antennae, scutellum, ovipositor, tibia, wing) similarly reflected overall size.
  • LDA identified the ovipositor as the single most representative body part for size estimation.
  • The wing and ovipositor were identified as the best indicators of size for the studied Trichogramma species.
  • A minimum of two body part measurements are necessary to differentiate between two distinct size groups.

Conclusions:

  • The wing and ovipositor are recommended as the primary measurements for assessing Trichogramma size.
  • Relying on a single body part, such as the tibia, may lead to inaccurate size estimations.
  • Utilizing multiple morphometric parameters enhances the accuracy of size classification in Trichogramma species for biological control applications.