History Main / ConceiveAndKill

* Doing this is the whole MO of Sil from ''Film/{{Species}}'', seeing as her one goal is to reproduce, which she does by seducing as many men as possible in order to do so. And given [[EvilIsSexy how stunning she looks in her usual human form]] and [[TheVamp how shamelessly she flaunts her sexuality]], it's rather easy for her to lure men to bed - which ultimately leads them to their doom, unfortunately, as she kills them after mating or at least tries to. (It seems to be more out of instinct than malevolence, however.)

[[folder:Anime and Manga]]

* In ''TabletopGame/DungeonsAndDragons'', and derivatives like ''Pathfinder'' above, Hags often murder their lovers when they are done, unless they think it would be more fun to leave him alive afterwards.

* In one chapter of ''Manga/FrankenFran'' Fran saves a boy's crush after an accident by making her part insect. His helping the girl through her recuperation allows him to win her over, resulting in them having sex after she is released from Fran's care... at which point her insect instincts take over and she kills and eats him.

* It also appears in a ''ComicBook/TheIncredibleHercules'' comic (the story told from #121-125). Amadeus Cho has an interest in [[http://en.wikipedia.org/wiki/Delphyne_Gorgon Delphyne Gorgon]], but she tells him that killing after mating is the custom of the women of her race.
* Sort of appears with ''ComicBook/TheDarkness'', a magic power that is passed from father to son (the son gaining the power when he reaches), but the father dies upon conception: - could be argued to be part of this trope if she copulates with him fully cognizant of this.
* Occurs with Jim Book in ''ComicBook/AmericanVampire''. He becomes infected with a disease that will turn him into a vampire, so he persuades Abilena to shoot him. She agrees on the condition he [[http://www.comicvine.com/james-book/29-70130/ impregnates her first]].

* Occurs in a Fanfiction story from Attack The Block called [[Attack-the-block-after-the-aliens "After The Aliens"]]: After being acquitted of armed robbery, Moses marries Sam, gets her pregnant and then receives a gluteal lethal injection during coitus.

* Franchise/MonsterVerse: {{Discussed}} a couple times in supplementary materials. In the ''Godzilla Aftershock'' graphic novel, Emma Russell theorizes that had the [[Characters/MonsterVerseMUTO MUTO pair]] that featured in ''Film/Godzilla2014'' succeeded in reproducing, the female MUTO probably would've killed the male, although Emma seems doubtful in this theory in light of Monarch's analysis of the MUTO Prime. The ''Film/GodzillaVsKong'' {{novelization}} reveals that studies of the [[Characters/MonsterVerseSkullIslandKaijuAndOtherCreatures Skullcrawlers]] (who are driven by pure HorrorHunger due to their hyper-metabolism constantly keeping them on the brink of starvation) have indicated that copulations among the creatures tend to end this way.

* Occurs with the H'nemthe, characters from ''Franchise/StarWarsLegends'', who believe that a male killed after mating in this way would receive the ultimate spiritual reward by going on to the netherworld as spiritual guardian for his offspring, meaning that they didn't resist the certain death that would result from copulation. [[http://starwars.wikia.com/wiki/Feltipern_Trevagg Felitipern Trevagg]] is an example of a male character who was part of this ritual.

* The [[http://grimm.wikia.com/wiki/Spinnetod Spinnetods]] from ''Series/{{Grimm}}'' do this on account of their rapid aging, meaning that they have to become pregnant quickly so that the lineage doesn't die out.
* On ''Series/ForeverKnight'', it was said that for a vampire woman to conceive, she must have sex with a human male - and said male must die during the sex act.
* The Taresians of ''Series/StarTrekVoyager'' are a OneGenderRace of females that mate with other humanoid species by implanting viruses in them that turn them into male Taresians, believing that there are long-lost children driven with the desire to return home. The mating process (a male is given three females as his wives) is deadly to the male, as they end up dying after mating with their wives.
* ''Series/BuffyTheVampireSlayer'': The MonsterOfTheWeek in "[[Recap/BuffyTheVampireSlayerS1E4TeachersPet Teacher's Pet]]" is a She-Mantis which preys on male virgins: mating with them to fertilise her eggs and then killing them.

* ''Series/AsTheWorldTurns''' deranged Julia kidnapped her ex-husband Jack and raped him, desperate to replace the child she miscarried. Afterwards, she tied him up in his car and pushed it into a lake to finish him off (he survived, luckily).

* Subverted on ''Series/{{Haven}}''. Season one's "Ball and Chain" features a local woman who shapeshifts into a beautiful woman every Friday night, then seeks out men to seduce and impregnate her. The men rapidly age and die over the course of the extremely short gestation, but it's the ''babies'' that are killing their fathers, not the [[DifferentlyPoweredIndividual Troubled]] person.

* In ''TabletopGame/DungeonsAndDragons'', and derivatives like ''Pathfinder'' above, Hags often murder their lovers when they are done, unless they think it would be more fun to leave him alive afterwards.
** Harpies doing this has also been mentioned in some editions of D&D.

%%* Happens in Jerome Robbins' ballet ''[[http://www.poisonivyswalloftext.com/2012/10/nycbs-strong-finish.html The Cage]]''.

* Drone (male) honey bees that succeed in mating with the queen are doomed to die, as their endophallus is ripped from them during the act, resulting in a fatal wound.

* Occurs in a Fanfiction story from Attack The Block called "After The Aliens".[[https://www.fanfiction.net/s/11352038/1/Attack-the-block-after-the-aliens]] After being acquitted of armed robbery, Moses marries Sam, gets her pregnant and then receives a gluteal lethal injection during coitus.

* ''WesternAnimation/KungFuPanda2'': Master Mantis says he never had Daddy issues because his mother bit his father's head. He also claims to be looking forward to the day he has a similar demise.

** In ''ComicBook/WonderWoman2006'' the "Citizenry" travel about enslaving worlds, slaughtering their populace to use as food and fuel and raping and killing the men in order to conceive offspring. Diana is horrified, as are the rest of the Amazons--including the Bana who were keeping men as {{breeding slave}}s less than a generation ago--who agree to indefinitely imprison the Citizenry leader when the rest say they'll abandon these practices without her.

* Naturally, the [[http://en.wikipedia.org/wiki/Latrodectus black widow spider]] is notorious for this, which is how the BlackWidow trope got its name. Like with mantises it does not happen all the time.

* Franchise/MonsterVerse: {{Discussed}} a couple times in supplementary materials. In the ''Godzilla Aftershock'' graphic novel, Emma Russell theorizes that had the [[Characters/MonsterVerseKaiju MUTO pair]] that featured in ''Film/Godzilla2014'' succeeded in reproducing, the female MUTO probably would've killed the male, although Emma seems doubtful in this theory in light of Monarch's analysis of the MUTO Prime. The ''Film/GodzillaVsKong'' {{novelization}} reveals that studies of the [[Characters/MonsterVerseSkullIslandKaijuAndOtherCreatures Skullcrawlers]] (who are driven by pure HorrorHunger due to their hyper-metabolism constantly keeping them on the brink of starvation) have indicated that copulations among the creatures tend to end this way.

Referring to the trope of the female becoming pregnant and then killing her mate, often in the act of copulation. A sub-trope that is part of various tropes, including the BlackWidow, DeathBySex and possibly SomeoneToRememberHimBy tropes.

* In the bad ending of ''VideoGame/{{Far Cry 3}}'', [[spoiler:Citra kills Jason after they have sex.]]

* Also happens with [[http://factsanddetails.com/world.php?itemid=1591 scorpions]].
* Also known to happen with [[http://en.wikipedia.org/wiki/Praying_mantis#Reproduction_and_life_history praying mantises]] and various species of spider, e.g. the [[http://en.wikipedia.org/wiki/Redback_spider#Reproduction redback spider]], which actively participates in the process.
* Naturally, the [[http://en.wikipedia.org/wiki/Latrodectus black widow spider]] is notorious for this, which is how the BlackWidow trope got its name.

For obvious reasons (outside of a MisterSeahorse situation), the ones who practice this trope are AlwaysFemale.

* Subverted on ''Series/{{Haven}}''. Season one's "Ball and Chain" features a local woman who transforms into an attractive woman to seduce men in order to get pregnant. The men rapidly age and die, but it's the ''babies'' who are sucking their father's life force, and not the [[DifferentlyPoweredIndividual Troubled]] person.

* In the tie-in novels for ''WesternAnimation/StarWarsTheCloneWars'', it's revealed the [[{{Matriarchy}} matriarchal]] [[WitchSpecies Dathomirians]] traditionally practice this.

* This was Lavona Succuboso's plan the ''second'' time she [[StalkerWithATestTube tried to steal Nathan Explosion's sperm]] in ''WesternAnimation/{{Metalocalypse}}'': the Revengencers had made his death a condition of helping her get close enough to Nathan to steal his sperm. Toki knocks her out with a vodka bottle before she could do either of those things.

[[folder:Fanfiction]]

* Naturally, the [[http://en.wikipedia.org/wiki/Latrodectus black widow spider]] is notorious for this, which is how the BlackWidow trope got its name. In truth, the black widow spider doesn't actually do this. When an adventurer discovered the black widow, it was in the process of eating another spider. Just goes to show that first impressions are everything.

* ''Series/V2009'': Visitor queens mate only twice in their lives (once to produce more Queens, and once to produce another caste), and each time devour their mates to provide their eggs with nourishment. This is shown with Anna when she has her second and last mating in season one, and later with her spare Queen daughter's first mating in the series finale.

* The Taresians of ''Series/StarTrekVoyager'' are a OneGenderRace of females that mate with other humanoid species by implanting viruses in them that turn them into male Taresians, believing that there are long-lost children driven with the desire to return home. The mating process (a male is given three females as his wives) is deadly to the male, as they end up dying after mating with her wives.

* Naturally, the [[http://en.wikipedia.org/wiki/Latrodectus black widow spider]] is notorious for this, which is how the BlackWidow trope got its name. However, in truth, the Black Widow spider doesn't actually do this. When an adventurer discovered the black widow it was in the process of eating another spider. First impressions are everything.

* Naturally, the [[http://en.wikipedia.org/wiki/Latrodectus black widow spider]] is notorious for this. That's how the BlackWidow Trope got its name. In reality, the Black Widow spider doesn't do this. When an adventurer discovered the Black Widow it was in the process of eating another spider.

* In the ''ComicBook/{{New 52}}'' version of ''ComicBook/WonderWoman'', the Amazons of Themyscira sustain their population by kidnapping men, having sex with them, then killing them. Oh, and if the babies are male, they're sold into slavery. Needless to say, fans were [[https://www.tor.com/2012/04/04/wonder-woman-comics-and-the-violation-of-the-amazons/ not]] [[https://www.themarysue.com/wonder-woman-7/ amused]]. Due to the outcry, this was retconned away with ''ComicBook/DCRebirth''.