A mechanical separation device optionally includes one or more of a housing, a screen a rotary assembly, one or more wash bars and a plurality of nozzles. The screen can be positioned within the housing to separate at least a portion of the liquid medium from the solids. The rotary assembly can be within the housing and can be configured to move the solids and the liquid medium along an axial length of the housing toward the discharge outlet. The one or more wash bars can be within the housing and can be positioned adjacent the screen. The plurality of nozzles can be spaced along the one or more wash bars. The he one or more wash bars can be configured to receive a wash fluid and the plurality of nozzles configured to discharge the wash fluid against the screen.

A mechanical separation device optionally includes one or more of a housing, a screen a rotary assembly, one or more wash bars and a plurality of nozzles. The screen can be positioned within the housing to separate at least a portion of the liquid medium from the solids. The rotary assembly can be within the housing and can be configured to move the solids and the liquid medium along an axial length of the housing toward the discharge outlet. The one or more wash bars can be within the housing and can be positioned adjacent the screen. The plurality of nozzles can be spaced along the one or more wash bars. The he one or more wash bars can be configured to receive a wash fluid and the plurality of nozzles configured to discharge the wash fluid against the screen.

A sieving apparatus for separating insect pupa is described. In an example, the sieving apparatus includes a sieving device attached to an actuation system. The sieving device includes a set of openings sized to correspond to a cross-sectional cephalothorax width of a representative pupa of a population of insect pupae to be separated. The actuation system is configured to move the sieving device in a manner that causes smaller insect pupae to pass through the set of openings. Larger insect pupae remain within the sieving device. Such movement can include moving the sieving device with respect to a liquid held in a basin of the sieving apparatus.

A sieving apparatus for separating insect pupa is described. In an example, the sieving apparatus includes a sieving device attached to an actuation system. The sieving device includes a set of openings sized to correspond to a cross-sectional cephalothorax width of a representative pupa of a population of insect pupae to be separated. The actuation system is configured to move the sieving device in a manner that causes smaller insect pupae to pass through the set of openings. Larger insect pupae remain within the sieving device. Such movement can include moving the sieving device with respect to a liquid held in a basin of the sieving apparatus.

An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.

An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.

An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.

An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.

A male population of mosquito pupae sorted according to a sorting method is described. The sorting method may include adding a mixed population of mosquito pupae into an interior volume of a sieving container including base defining a set of openings enabling movement of mosquito pupae from the interior volume through the set of openings. The mixed population of mosquito pupae may include male mosquito pupae and female mosquito pupae. The method may also include adding a volume of aqueous solution to the interior volume. The method may also include removing a portion of the male pupae from the mixed population of mosquito pupae to by performing a sieving action that causes the portion of the male pupae and a portion of the volume of water to pass from the interior volume through the set of openings. The method may also include capturing the portion of the male pupae as the male population of mosquito pupae after the portion of the male pupae has passed through the set of openings.

A male population of mosquito pupae sorted according to a sorting method is described. The sorting method may include adding a mixed population of mosquito pupae into an interior volume of a sieving container including base defining a set of openings enabling movement of mosquito pupae from the interior volume through the set of openings. The mixed population of mosquito pupae may include male mosquito pupae and female mosquito pupae. The method may also include adding a volume of aqueous solution to the interior volume. The method may also include removing a portion of the male pupae from the mixed population of mosquito pupae to by performing a sieving action that causes the portion of the male pupae and a portion of the volume of water to pass from the interior volume through the set of openings. The method may also include capturing the portion of the male pupae as the male population of mosquito pupae after the portion of the male pupae has passed through the set of openings.