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Sororicide (from Latin ''soror'' "sister" + ''-cide'', from ''caedere'' "to cut, to kill") is the act of killing one's own sister. There are a number of examples of sororicide and fratricide in adolescents, even pre-adolescents, where sibling rivalry and resulting physical aggression can get out of hand and lead to the death of one of them, particularly when a potent weapon is available or one is significantly older than the other and misjudges his/her own strength. ==Known or suspected examples== * Berenice IV of Egypt is believed to have poisoned her sister Cleopatra VI Tryphaena in 57 BC. She was later beheaded on the orders of her father, Ptolemy XII. * Cleopatra VII of Egypt requested the execution of her sister, Arsinoe IV, which was carried out under the orders of her lover, Mark Antony, in 41 BC. * Roman Emperor Caligula, according to historian Suetonius, killed his sister Drusilla after learning that she was pregnant with his child in AD 38. Most historians now believe that she probably died of fever. * Roman Emperor Commodus ordered his older sister Lucilla to be put to death in AD 182, after she was implicated in plots with members of the Senate to overthrow him. * Ronald DeFeo, Jr. shot his two sisters, Allison and Dawn, in 1974. Their murders became the inspiration for the Amityville Horror books and films. * Canadian serial killers Karla Homolka and Paul Bernardo raped, then accidentally killed Karla's sister Tammy (1990). * Yuki Muto murdered his sister Azumi Muto on December 30, 2006 in Japan. * Aqsa Parvez was murdered by her brother in 2007 in Canada. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「sororicide」の詳細全文を読む スポンサード リンク
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