'''Season 4, Episode 6''':
!Natural Election

Moya asks the crew to elect a captain. After dealing with a toxic space plant, the crew votes and the clear winner is D'Argo.

!Tropes present in this episode include:
* AllOfTheOtherReindeer: The plant moves without discretion, but it recoils from the presence of Scorpius.
-->'''Crichton:''' Seems that Audrey has taste.
* CannotKeepASecret: Aeryn tells Chiana about her being pregnant and how Crichton might not be the father. Chiana immediately tells D'Argo, who in turn tells Crichton.
* CloningBlues: Discussed and averted. Aeryn no longer sees a distinction between Crichton and the one who was with her on Talyn.
* ContinuityNod: Crichton admits he had [[Recap/FarscapeS04E01CrichtonKicks previously]] considered he might not be the father of Aeryn's baby.
* CrazyPrepared: The FantasyContraception makes sense in light of "[[Recap/FarscapeS02E05TheWayWeWerent The Way We Weren't]]" (specifically how Peacekeepers allows casual sex to fulfill the physical needs).
* FantasyContraception: Aeryn is actually pregnant, but Sebacean females born on Command Carriers are given the means to keep an embryo in stasis for seven years maximum. This is done to ensure pregnancies don't suddenly take female Peacekeepers out of action, and only a surgical procedure can remove the stasis. Additionally, it's possible she was impregnated four years before she even met Crichton.
* HonorBeforeReason: D'Argo tells Crichton what Chiana told him about Aeryn's pregnancy. He feels Crichton absolutely deserved to know.
* {{Irony}}: Shooting the plant is a disaster, but Crichton notes it's still the first time the crew ever completely agreed on a plan.
* ItsAllMyFault:
** Rygel blames himself for the crisis because he was officially in command at the time.
** After shooting the plant with his ship backfires, D'Argo blames himself. Crichton reminds him they all agreed to the plan.
* LandslideElection: D'Argo gets four votes out of eight. [[note]]The remaining votes: 1 for Rygel, 1 for Aeryn, 1 for Scorpius, 1 for the Divine Eternal.[[/note]]
* NeverMyFault: Aeryn is ticked that Chiana blabbed her secret. Crichton reminds Aeryn that no one made her tell Chiana in the first place.
* NiceJobBreakingItHero: Shooting the plant with ''Lo'La''. Being under attack causes the plant to eat faster.
* ShoutOut: Crichton calls the plant [[Theatre/LittleShopOfHorrors Audrey]].
* WhamEpisode: Crichton's wormhole research has evolved to the point where he can accurately predict their openings. Also, D'Argo is elected captain.