Related Rule
Practice Relating to Rule 73. Biological Weapons
Ecuador’s Naval Manual (1989) states:
International law prohibits all biological weapons or methods of warfare whether they are directed against persons, animals or plants. Biological weapons include microbial or biological or toxin agents of any origin (natural or artificial) or method of production. 
Ecuador, Aspectos Importantes del Derecho Internacional Marítimo que Deben Tener Presente los Comandantes de los Buques, Academia de Guerra Naval, 1989, § 10.4.
In 1988, in a statement before the Fifteenth Special Session of the UN General Assembly, Ecuador stated:
Among disarmament measures, Ecuador believes that priority should be given to the following: … a complete ban on the testing or production of new weapons of mass destruction, including … biological [weapons]. 
Ecuador, Statement before the Fifteenth Special Session of the UN General Assembly, UN Doc. A/S-15/PV.2, 1 June 1988, § 158.
In 1991, during a debate in the UN Security Council on the situation between Iraq and Kuwait, Ecuador stated:
It is … timely to insist on observance of the international agreements which prohibit the use of asphyxiating and toxic gases and bacterial warfare and which seek the universal elimination of chemical and biological weapons. 
Ecuador, Statement before the UN Security Council, UN Doc. S/PV.2981, 3 April 1991, p. 107.