• Wrong document? Swap it for free
  • Written by students who passed
  • Immediately available after payment
  • Read online or as PDF
Sell
Where do you study
Your language
Document preview thumbnail
Preview 3 out of 17 pages
Exam (elaborations)

ENTM 4020: Exam 2 Study Guide 137 Complete Solutions.

Document preview thumbnail
Preview 3 out of 17 pages

ENTM 4020: Exam 2 Study Guide 137 Complete Solutions. ENTM 4020: Exam 2 Study Guide 137 Complete Solutions. ENTM 4020: Exam 2 Study Guide 137 Complete Solutions. ENTM 4020: Exam 2 Study Guide 137 Complete Solutions. ENTM 4020: Exam 2 Study Guide 137 Complete Solutions.

Content preview

Importance of Honeybees - ANSWER - Most important managed species for crop pollination

- Adaptable to a wide range of climatic conditions

- Tolerant to human management

- Generalists/polylectic

- Pollination is valued at $12 billion



Langstroth Hive - ANSWER Invented by Reverend Langstroth in 1851. Contains moveable frames spaced
¼ inches apart. Patented design



economically important services and goods honeybees are used to perform and produce - ANSWER -
Natural sweetener: Sugar Syrup, Pollen patties

- Multiple health benefits (reduction in allergies)



Queen Bees - ANSWER The special one; Female. Arguably the most important individual. Sole
reproductive female. Primary source of colony cohesion. Long-Living



Worker Bees - ANSWER Tens of thousands; Female; Duties are to manipulate wax, cap brood, attend the
queen, trophallaxis (oral food exchange), grooming, defense, foraging, and decision making



Drone Bees - ANSWER Several hundreds; male; Duties are to eat and mate



Caste - ANSWER Simultaneous polymorphism or polyethism within the same sex; Reproductive caste



Basic Bee Colony Structure - ANSWER 1. Queen

2. Worker

,3. Drones

4. Matures and Immatures

5. Caste



What are some of the factors that are contributing to decline in colony health? - ANSWER 1. Limitations
for brood rearing: temperature (above 40 degrees), environment (availability of pollen and nectar), and
colony (sufficient stores).

2. Management - Pest control and nutrition

3. Parasites (Bacteria, fungi, mites, viruses)

4. Environment (pesticides, climate change, forage)



Importance of native bees - ANSWER - Most are solitary, but vary in sociality

- Over 75% of all flowering plants require animal pollen

87 to 124 main crops used for human consumption depend on pollinators

- $3 billion worth of US pollination services provided by native bees

- Pollinate many crops more effectively than honeybees

- Forage at different times and varying weather conditions



Different Levels of Sociality - ANSWER 1. Solitary

2. Social



Solitary Sociality - ANSWER Most are univoltine; each female constructs and provisions nest without
help from others; live for about a year; Tend to emerge when favorite plants are flowers; go through
diapause



Social Sociality - ANSWER are multivoltine with each generation active for many months; can have
annual life cycles or perennial life cycles; Range from subsocial to eusocial.



Two types of Social Sociality - ANSWER Subsocial and Eusocial

, Subsocial - ANSWER No common nest site; one adult female protects and feeds offspring progressively;
no division of labor; 1 generation; all reproductive can survive on their own



Why are native bee populations declining? - ANSWER - Habitat fragmentation

- Agricultural practices

- Exotic species

- Disease



What can we do to help bees survive? - ANSWER 1. Habitat restoration: Growing right mix of flowers
with overlapping bloom periods

2. Providing nesting sites

3. Manage responsibly: Reduce pesticides, apply only when serious pest problem, apply when bees are
not active/flowers are not in bloom; plant a succession of flowering plants.



Why are so many different bees needed for pollination? - ANSWER - Having multiple pollinators provide
"crop insurance"

- Different species are active during different times of the year



What co-adaptations have evolved between bees and flowers? - ANSWER 1. Synchrony in time and
space

2. Plants provide attractive cues and rewards

3. Pollinators have morphological adaptions to collect and transport pollen

Pollinators have some degree of flower constantly or flower fidelity



How do you effectively use trap crops? - ANSWER Remember, Insects have differential host preference

- Insect may feed and reproduce in preferred host

Document information

Uploaded on
April 13, 2025
Number of pages
17
Written in
2024/2025
Type
Exam (elaborations)
Contains
Questions & answers
$9.99

Wrong document? Swap it for free Within 14 days of purchase and before downloading, you can choose a different document. You can simply spend the amount again.
Written by students who passed
Immediately available after payment
Read online or as PDF

Seller avatar
Reputation scores are based on the amount of documents a seller has sold for a fee and the reviews they have received for those documents. There are three levels: Bronze, Silver and Gold. The better the reputation, the more your can rely on the quality of the sellers work.
BestTutor001
3.0
(3)
Sold
29
Followers
9
Items
2614
Last sold
2 weeks ago



Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their tests and reviewed by others who've used these notes.

Didn't get what you expected? Choose another document

No worries! You can instantly pick a different document that better fits what you're looking for.

Pay as you like, start learning right away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and aced it. It really can be that simple.”

Alisha Student

Working on your references?

Create accurate citations in APA, MLA and Harvard with our free citation generator.

Working on your references?

Frequently asked questions