Foliar galls on Trewia nudiflora by Trioza fletcheri: Life cycle noted.
Journal name: World Journal of Pharmaceutical Research
Original article title: Morphology of foliar galls on trewia nudiflora induced by trioza fletcheri crawford with a comment on life cycle of the psyllid
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Om Datta, Dr. Sunil Tomar and Dr. S. C. Dhiman
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World Journal of Pharmaceutical Research:
(An ISO 9001:2015 Certified International Journal)
Full text available for: Morphology of foliar galls on trewia nudiflora induced by trioza fletcheri crawford with a comment on life cycle of the psyllid
Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research
Doi: 10.20959/wjpr20196-14797
Copyright (license): WJPR: All rights reserved
Summary of article contents:
Introduction
The study investigates the morphology of foliar galls on Trewia nudiflora induced by the psyllid Trioza fletcheri. These galls are significant because they represent a major pest threat to the plant, causing considerable damage during peak infestation periods, specifically between August and November. The research details the structure, life cycle, and biological implications of the interactions between the psyllid and its host plant, contributing to the understanding of gall formation and pest management.
Gall Morphology and Characteristics
The galls produced by T. fletcheri on Trewia nudiflora are pouch-like structures that form on the dorsal side of leaves, initiated by the feeding action of the first instar nymph. The galls vary in size from 0.924 to 2.125mm in length and 1.142 to 2.848mm in width, changing color from greenish to brown as they develop. They can be observed in varying quantities on the leaves and may lead to significant leaf deformation and reduction. The growth of these galls involves the closing of their openings, which provide a habitat for the nymphs as they mature.
Life Cycle and Nymph Development
The life cycle of T. fletcheri comprises five nymphal instars, spanning a duration of 26 to 31 days. The newly emerged nymphs induce gall formation by feeding on the tender leaf surfaces and producing gall-inducing chemicals. Each nymphal stage varies in duration; the first instar lasts approximately 3.5 days, with subsequent stages lasting between 4 and 5 days. The gall not only offers a source of nutrition for the nymphs but also provides protection against predators and environmental stressors. This bacteriological relationship highlights the significant adaptations of the psyllid for survival and development.
Egg Morphology and Incubation
Trioza fletcheri lays its eggs on the ventral surfaces of the leaves, near structures such as the midrib and petiole. The eggs are microscopic, elongated, and initially yellowish, changing to greenish-yellow as they approach the end of their incubation period, which typically lasts between 5 and 7 days. Unique features such as a curved caudal process and a micropilar process are notable in the egg structure. These adaptations facilitate successful attachment to the host plant and nutrient acquisition necessary for the newly hatched nymphs.
Conclusion
The research on the foliar galls induced by Trioza fletcheri on Trewia nudiflora reveals critical insights into the dynamics of pest-plant interactions. Understanding the morphological characteristics of galls, the life cycle of the psyllid, and the specific adaptations of both eggs and nymphs enhances our comprehension of gall-forming processes. This knowledge is essential for developing effective pest management strategies, potentially mitigating the considerable economic impact caused by this pest on agricultural ventures.
FAQ section (important questions/answers):
What is the primary pest affecting Trewia nudiflora?
The primary pest affecting Trewia nudiflora is Trioza fletcheri, a psyllid that can cause 50-70% damage to the plant's foliage, especially during peak periods from August to November.
What is the size and color transformation of the galls?
Galls formed by Trioza fletcheri range from 0.924 to 2.125mm in length and 1.142 to 2.848mm in width. They initially are greenish and gradually turn brown as they mature.
How does the life cycle of Trioza fletcheri progress?
The life cycle of Trioza fletcheri consists of five nymphal instars and lasts 26-31 days. The nymphs induce gall formation and feed on the leaves during their development.
What is observed on the leaves affected by galls?
Infested leaves exhibit pouch-like galls mainly on the dorsal surface, which can cause crumbling and deformation of the leaves due to multiple galls forming closely together.
How are the eggs of Trioza fletcheri laid?
Trioza fletcheri eggs are laid on the ventral side of the leaves, near soft stems. They are elongated, yellowish, and attached using a glue secreted by the female.
What are the characteristics of the adult Trioza fletcheri?
Adult Trioza fletcheri are active insects with green bodies, two pairs of transparent wings, and a specific body structure. Females have an upward-turned ovipositor while males have a pointed abdomen.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “Foliar galls on Trewia nudiflora by Trioza fletcheri: Life cycle noted.”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.
1) Surface:
'Surfaces' underscores the importance of the dorsal and ventral leaf areas involved in gall formation and nymph feeding. Investigating leaf surfaces aids in comprehending the ecological roles of gall-inducing insects and the impacts on host plants.
2) Insect:
'Insects' describe a diverse group of arthropods, including over 300,000 species studied within zoology. They are vital for pollination, decomposition, and acting as pests or disease vectors. Their understanding is essential for maintaining ecological balance and managing agricultural challenges.
3) Zoology:
'Zoology' is the branch of biology dealing with the study of animals, including insects like psychllids. This discipline is crucial for understanding animal behavior, physiology, and ecology. Research findings in zoology inform conservation efforts and pest management strategies, especially in agriculture.
4) Life:
'Life' encompasses the biological processes and cycles of organisms, including the life cycle of Trioza fletcheri. Understanding the life stages of this insect, from egg to adult, contributes to insights in ecology, pest management, and the dynamics of plant-insect interactions.
5) Honey:
'Honey' in this context refers to the honeydew secreted by nymphs within the galls. This sugary substance attracts other organisms and can lead to fungal growth, impacting the health of the plant. Honeydew's ecological interactions highlight the complexities of gall-insect relationships.
6) Hair:
'Hair' relates to the trichomes on leaves where psyllids lay their eggs. These structures contribute to the insect's habitat and protection. The presence of hair-like structures facilitates gall formation and influences feeding behavior, ultimately affecting plant health and vigor.
7) Male:
'Male' denotes one of the sexes in the adult form of the pest Trioza fletcheri. Characteristics such as the pointed posterior abdomen distinguish male from female. Understanding sexual dimorphism aids in breeding studies and pest control measures.
8) Discussion:
'Discussion' presents the analysis and interpretation of the findings related to gall morphology and psyllid biology. It is necessary for advancing scientific knowledge, guiding future research directions, and addressing ecological impacts of gall-inducing pests on their host plants.
9) Developing:
'Developing' refers to the growth stages of the psyllid from egg to adult. Each developmental phase contributes to understanding population dynamics, ecological interactions, and the potential for pest management strategies to control the gall-inducing insect's impact on crops.
10) Relative:
'Relative' indicates the comparison with other species or environmental factors, like humidity and temperature, affecting the life cycle of Trioza fletcheri. This contextual understanding is crucial for interpreting ecological relationships and pest management in agriculture.
11) Disease:
'Disease' emphasizes the negative impact of psyllids on plants, acting as vectors for harmful pathogens. Knowledge of disease dynamics driven by insect pests is essential for developing integrated pest management strategies to minimize crop losses.
12) Habitat:
'Habitat' signifies the environment that supports the life of Trioza fletcheri. Insights into their habitat requirements help establish management practices to conserve beneficial species while mitigating the impacts of pests on agricultural landscapes.
13) Species:
'Species' refers to the specific classification of organisms, such as Trioza fletcheri. Understanding species diversity and interactions informs conservation efforts and pest management, which are crucial for sustainable agriculture and biodiversity.
14) Forest:
'Forest' indicates the ecosystem from which gall-infested leaves were collected. A healthy forest contributes to biodiversity, ecosystem services, and habitat preservation, playing a crucial role in supporting various species, including gall-forming psyllids.
15) India:
'India' denotes the geographic location of the research. The ecological and agricultural contexts in India provide a unique backdrop for studying the impacts of pests like Trioza fletcheri, highlighting the need for localized pest management strategies.
16) Glass:
'Glass' refers to the material used in making slides for observing specimens under a microscope. It describes the techniques in documenting findings, reinforcing the importance of accurate microscopy in entomological research and biological studies.
17) Field:
'Field' is related to the natural environment where insects interact with their hosts. Conducting field studies provides insights into the real-world implications of insect behavior, gall formation, and the overall health of ecosystems, aiding scientific understanding.
18) Tree:
'Tree' represents individual plant species, like Trewia nudiflora, infested by pests. Understanding species-specific interactions with insects is vital for developing effective management strategies that protect both trees and their ecosystems.
19) Hind:
'Hind' pertains to the anatomy of the adult psyllid, with reference to the hind abdomen or hind wings. Appreciating anatomical features aids in distinguishing male and female psyllids, enhancing identification, and informing ecological studies.
20) Crop:
'Crop' refers to agricultural plants affected by the pest Trioza fletcheri, indicating the economic implications of pest damage on food production. Understanding crop interactions with pests is essential for implementing effective agricultural practices and ensuring food security.
21) Wall:
'Wall' describes the structure of the gall which forms around the developing nymphs. Understanding the composition and morphology of gall walls informs research on pest impacts on plant cells and their growth responses.
22) Viru:
'Viru' appears to be a misspelling or abbreviation of 'virus.' It emphasizes the role of psyllids in potentially spreading viral diseases in plants, highlighting the relationships between pests, plant health, and agricultural economics.
Other Science Concepts:
Discover the significance of concepts within the article: ‘Foliar galls on Trewia nudiflora by Trioza fletcheri: Life cycle noted.’. Further sources in the context of Science might help you critically compare this page with similair documents:
Life cycle, Adult male, Adult female, Ventral surface, Dorsal surface, Chemical stimulus.