WINGS: Essays on Invertebrate Conservation - Spring 2013

WINGS magazine is a publication of the Xerces Society focused on invertebrate conservation.
The Spring 2013 issue marks a transition aimed at enhancing the publication while maintaining quality content and aesthetics.
Features include:
- A longer feature article.
- Two shorter essays.
- Spotlight on partner organizations.
- Staff member profile.
- An "Invertebrate Notes" section providing updates on literature and research.
- Regular updates in "Xerces News" about the Society's activities.

Involved in projects to enhance knowledge regarding insect conservation.
Major areas of focus:
- Migratory Dragonfly Partnership (MDP):
  - Collaboration with citizens across Mexico, the U.S., and Canada.
  - Aims to understand dragonfly migration patterns in North America.
  - Utilizes projects like Pond Watch and Migration Monitoring for data collection.
- Bumble Bee Conservation Initiative:
  - Targets imperiled bumble bee species.
  - Expands data collection regarding conservation status of North American bumble bees.
  - Plans to broaden sightings program of all bumble bee species in North America.
Xerces' Pollinator Conservation Program:
- Conducted over 1,000 educational events (Pollinator Conservation Short Courses, workshops).
- Reached more than 20,000 agricultural professionals.
- Tens of thousands reached through publications and web resources.
- Collaborated with USDA Natural Resources Conservation Service, leading to habitat improvements on 120,000+ acres.

Efforts to maintain quality features while enhancing engagement:
- Continued high-quality writing and compelling imagery in a small format.
- Introduction of various new content forms.
- Invitation for feedback from readers regarding changes.

The Wonder of Metamorphosis by Piotr Naskrecki:
- Personal narrative on witnessing a praying mantis undergo metamorphosis.
- Description of the physical changes during metamorphosis:
  - Begins with the mantis shedding its juvenile exoskeleton.
  - Transformation into a fully-fledged adult includes:
    - Emergence of adult structures (wings, reproductive organs).
    - Development of sensory structures like ocelli (simple eyes) and a cyclopean ear.
- Comparison of insect metamorphosis with human development, emphasizing the dramatic nature of arthropod changes versus gradual human growth.
- Discussion of protective measures during molting due to vulnerability.

Critical concepts explained:
- Ecdysis: The molting process necessary for growth, characterized by shedding the exoskeleton.
- Involves complex cellular events including:
  - Apoptosis: Programmed cell death for eliminating unnecessary structures.
  - Hormonal regulation is crucial, involving hormones such as:
    - Prothoracicotropic hormone (initiates molt).
    - Ecdysone (regulates new tissue formation).
    - Juvenile hormone (inhibits adult structure development until the final molt).
    - Eclosion hormone (triggers final metamorphosis).
Insect developmental cycles classified into three categories:
- Ametabolous: Primitive insects; young differ from adults only in size; development continues indefinitely after maturation.
- Hemimetabolous: Immature forms resemble adults but lack wings and reproductive organs; different lifestyles (e.g., aquatic nymphs).
- Holometabolous: Drastic differences between larvae and adults; includes complete metamorphosis from egg to larva to pupa to adult.

Holometabolous insects are evolutionarily successful, with significantly greater species diversity (e.g., beetles with 350,000 described species).
Their life cycle allows larval and adult forms to occupy different ecological niches, minimizing resource competition:
- Example of caterpillars (larvae) increasing body mass significantly before pupation (e.g., 1500% mass increase).
- Newly developed structures arise from active cells (imaginal discs) during the pupal stage, which undergo significant remodeling.
Once the metamorphosis is complete, this leads to a highly specialized adult form focused on reproduction.

The fascination with insect metamorphosis dates back to early naturalists, with Maria Sibylla Merian (1699) providing detailed documentation of life cycles.
Modern biological understanding of metamorphosis incorporates detailed knowledge of genetic regulation, hormonal interaction, and developmental biology implications.
Such insights also facilitate ecological understanding and practical applications in pest control methods.

Dr. Piotr Naskrecki emphasizes both the biological drama of insect metamorphosis and its enduring sense of wonder.
His work reflects a commitment to promoting invertebrate conservation through both research and public appreciation of these organisms.