@article{fdi:010065712,
  title = {{L}andscape changes in a lowland in {B}enin : ecological impact on pests and natural enemies},
  author = {{B}oucher, {A}. and {S}ilvie, {P}ierre and {M}enozzi, {P}. and {A}dda, {C}. and {A}uzoux, {S}. and {J}ean, {J}. and {H}uat, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}abitat management involving conservative biological control could be a good crop pest management option in poor {A}frican countries. {A} survey was conducted from {A}ugust 2013 to {J}uly 2014 in a rainfed lowland region near {P}{\'e}l{\'e}bina, northern {B}enin, in order to characterize spatiotemporal lanscape changes and investigate their influence on the main crop pests and their associated natural enemies. {T}he area was mapped mainly regarding crop fields and fallows. {V}isual observations were recorded and a database was compiled. {M}ajor landscape composition changes were noted between rainy and dry seasons, which affected the presence of both pests and natural enemies. {C}ereals (rice, maize and sorghum) and cotton were grown in the humid season, and then okra ({A}belmoschus esculentus) was the dominant vegetable crop in dry season. {T}hese modifications impacted fallow abundance throughout the lowland. {D}ifferent cotton (e.g. {H}elicoverpa armigera, {D}ysdercus sp., {Z}onocerus variegatus) or rice (e.g. {D}iopsis {I}ongicornis, {D}. apicalis) pests were observed during dry season in okra crops. {D}ry season surveys of {P}oaceae in two types of fallows ('humid', 'dry') revealed the presence of very few stem borers: only 0.004% of stems sampled were infested by stem borers, with a mean of 1.13 larvae per stem. {K}nown cereal stem borer species such as {B}usseola fusca, {C}oniesta ignefusalis, {S}esamia calamistis were not clearly identified among these larvae of their diapausing stage and white color. {U}nexpected pollinators ({H}ymenoptera {A}pidae, genus {B}raunsapis, {C}eratina and {X}ylocopa) and predators ({C}rabronidae, genus {D}asyproctus) were found in the stems. {S}weep-net collection of insects in humid fallows allowed us to describe for the first time in {B}enin seven {D}iopsidae species (23% of adults bearing {L}aboulbeniomycetes ectoparasitic fungi). {S}ome of these species were captured in rice fields during rainy season. {P}arasitoids (adult {C}halcidoidae and {I}chneumonoidae) were observed during both seasons but their impact on stem borers was hard to determine, even during the rainy season, due to their low abundance and the difficulty of identification. {P}redators ({R}eduviidae, {O}donata) were found mainly in humid fallows and rice fields. {R}egarding our observations, we suggest the presence of alternate host crops such as okra during the dry season for rainy season crop pests. {M}oreover, fallows also had a real ecological role as a habitat resource for many guilds of insects (pollinators, pests, predators). {T}he management of these landscape components should be the focus of a long-term study with the aim of enhancing pest management of rauny season crop pests.},
  keywords = {{PROTECTION} {DES} {PLANTES} ; {INSECTE} {NUISIBLE} ; {PHYTOECOLOGIE} ; {OCCUPATION} {SPATIALE} ; {CULTURE} {DE} {RENTE} ; {LUTTE} {BIOLOGIQUE} ; {CONSEQUENCE} {ECOLOGIQUE} ; {SAVOIR} {LOCAL} ; {BENIN}},
  booktitle = {},
  journal = {{C}ommunications in {A}gricultural and {A}pplied {B}iological {S}ciences},
  volume = {80},
  numero = {2},
  pages = {79--89},
  year = {2015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065712},
}