Exam 3 Flashcards
Male reproductive system overview
Produces sperm to fertilize female, sperm produced in testis and is transferred to female
Vas deferens
Carries sperm from testis to seminal vesicles
Seminal vesicles
Enlarged area of vas deferens to store sperm
ARG overview
(Accessory Reproductive Glands) Glands essential for trans of sperm to female, make seminal fluid, spermatophores covering, sperm protection, storage, and activation
Seminal fluid
Nutrients substances to the sperm
Ejaculatory duct
Associated with aedeagus, can add secretion to the seminal fluid
Aegeagus
Reproductive organ of male insects
Parts of male reproductive system
Testis, vas deferens, seminal vesicles, ARG, ejaculatory duct, and aedeagus
ARG seminal fluids
Fluids include carbohydrates, lipids, small amounts of amino acids and amines
In some insects, ARG seminal fluids include…
Noxious/toxic chemical in order to properly fertilize the egg (ex: uric acid for cockroaches)– trying to give sperm a better chance of fertilizing the egg
Male genitalia parts
Claspers, paraprocts, aedeagus– these parts can be specialized
Genitalia can be used to…
recognize each species (due to how unique it is)
Why is insect genitalia so diverse?
Past theory- cues to a female that they are a member of the same species
Current theory- Result of sexual selections (like antlers) which creates distinct genitalia, promotes evolution and sexual competing against each other
Female reproductive system function
To produce eggs and receive sperm
Ovaries
Two ovaries, each ovary contains tube like ovarioles which produce eggs through oogenesis
