@article{fdi:010071001,
  title = {{D}oes mosquito mass-rearing produce an inferior mosquito ?},
  author = {{S}oma, {D}. {D}. and {M}aiga, {H}. and {M}amai, {W}. and {B}imbile-{S}omda, {N}. {S}. and {V}enter, {N}. and {A}li, {A}. {B}. and {Y}amada, {H}. and {D}iabat{\'e}, {A}. and {F}ournet, {F}lorence and {O}u{\'e}draogo, {G}. {A}. and {L}ees, {R}. {S}. and {D}abir{\'e}, {R}. {K}. and {G}illes, {J}. {R}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ackground: {T}he success of the sterile insect technique depends, among other things, on continuous releases of sexually competitive sterile males within the target area. {S}everal factors (including high rearing density and physical manipulation, such as larvae and pupae separation) can influence the quality of males produced in mass-rearing facilities. {T}he different steps in mass production in the laboratory may modify the behaviour of mosquitoes, directly or through loss of natural characters as a result of adaptation to lab rearing, and lead to the competitiveness of sterile male being reduced. {I}n the present study, the objective was to evaluate the effect of mass-rearing conditions on sterile male sexual competitiveness in semi-field cages compared to routine small scale laboratory rearing methods. {M}ethods: {A}nopheles arabiensis immature stages were reared both on a large scale using a rack and tray system developed by the {FAO}/{IAEA} ({MRS}), and on a small scale using standard laboratory rearing trays ({SRS}). {M}osquito life history traits such as pupation rate, emergence rate, adult size as well as the effect of irradiation on adult longevity were evaluated. {M}oreover, 5-6 day old mosquitoes were released into field cages and left for two nights to mate and the mating competitiveness between sterile mass-reared males and fertile males reared on a small scale when competing for small scale reared virgin females was investigated. {R}esulting fertility in a treatment ratio of 1: 1: 1 (100 irradiated males: 100 non-irradiated males: 100 virgin females) was compared to control cages with 0: 100: 100 (non-irradiated control) and 100: 0: 100 (irradiated control). {R}esults: {N}o significant differences in life history parameters were observed between rearing methods. {T}he competitiveness index of mass reared males (0.58) was similar to males reared on a small scale (0.59). {A} residual fertility rate of 20% was observed in the irradiated control ( 100: 0: 100), measured as the percentage of eggs collected from the cages which developed to adulthood. {N}o significant difference was observed (t = 0.2896, df = 4, {P} = 0.7865) between the rearing treatments ({MRS} and {SRS}) in the fertility rate, a measure of mating competitiveness. {C}onclusions: {T}he results showed that the {FAO}/{IAEA} mass-rearing process did not affect mosquito life history parameters or the mating competitiveness of males.},
  keywords = {{A}nopheles arabiensis ; {S}terile insect technique ; {M}ass-rearing ; {C}ompetitiveness},
  booktitle = {},
  journal = {{M}alaria {J}ournal},
  volume = {16},
  numero = {},
  pages = {art. 357 [8 p.]},
  ISSN = {1475-2875},
  year = {2017},
  DOI = {10.1186/s12936-017-2012-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071001},
}