@article{fdi:010069371, title = {{C}larifying the source of {C}onicofrontia sesamoides {H}ampson ({L}epidoptera : {N}octuidae) population in {S}outh {A}frican sugarcane using morphological identification and mitochondrial {DNA} analysis}, author = {{A}ssefa, {Y}. and {G}oftishu, {M}. and {C}apdevielle {D}ulac, {C}laire and {L}e {R}ΓΌ, {B}runo}, editor = {}, language = {{ENG}}, abstract = {{V}alid identification of a novel pest species and clarifying its origin are the primary steps in understanding population structure and development of biocontrol programs. {I}n this study geographical populations of {C}onicofrontia sesamoides {H}ampson ({L}epidoptera: {N}octuidae) collected during surveys conducted in the years 2009, 2014 and 2015 were morphologically identified and their genetic diversity was analysed by using sequences of the mitochondrial cytochrome-c oxidase {I} ({COI}) gene in an attempt to examine host plant, or/and altitude associated differences among populations and determine the source of the newly recorded population of this species in the {S}outh {A}frican sugarcane. {T}he {C}. sesamoides specimens in this study were collected from {M}iscanthus capensis ({N}ees) ({P}oaceae) and sugarcane ({S}accharum officinarum {L}.) ({P}oaceae) in {E}astern {C}ape and {K}wa{Z}ulu-{N}atal {P}rovinces of {S}outh {A}frica. {A}nalysis of {M}olecular {V}ariance showed a moderate to highly significant genetic differentiation between {C}. sesamoides populations from different host plants ({FST} = 0.115, p = 0.14) and altitudinal range ({FST} = 0.159, p = 0.18). {T}his result was however, contradictory to outcomes of phylogenetic analyses, haplotype networking and uncorrected sequence divergence (0.0-1.54%) which revealed no detectable genetic differentiation between populations from different host plants and altitudes. {A}s it is difficult to measure {FST} accurately without a large data set, the very small sample used in the analysis might have resulted in inflation of the {FST} value in this study. {A}fter evaluation of the results, it was concluded that the sugarcane population of {C}. sesamoides has originated from the population residing in wild host plants in the {E}astern {C}ape and/or {K}wa{Z}ulu-{N}atal provinces of {S}outh {A}frica. {P}ossible reasons for the host plant expansion and its implications to commercial sugarcane production in the country are discussed.}, keywords = {{C}onicofrontia sesamoides ; {C}ytochrome-c oxidase {I} ; {M}orphological identification ; {S}outh {A}frica ; {S}ugarcane ; {AFRIQUE} {DU} {SUD}}, booktitle = {}, journal = {{P}hytoparasitica}, volume = {45}, numero = {1}, pages = {45--55}, ISSN = {0334-2123}, year = {2017}, DOI = {10.1007/s12600-017-0566-1}, URL = {https://www.documentation.ird.fr/hor/fdi:010069371}, }