Impact de l’activité de butinage de &lt;i&gt;Apis mellifera&lt;/i&gt; Linné (Hymenoptera: Apidae) sur la pollinisation et les rendements de &lt;i&gt;Ceratotheca sesamoides&lt;/i&gt; Endl. (Pedaliaceae) à Dang (Ngaoundéré, Cameroun)

Fohouo, Fernand-Nestor Tchuenguem; Dapsia, Jackson Djakbe; Ngakou, Albert; Wekere, Christian; Louabe, Stéphane; Faïbawa, Esaie

doi:10.4314/cajeb.v12i1.3

Cited by 6 publications

(25 citation statements)

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“…sesamoides flowers situated between 10 and 11 am could be explained by the optimal receptivity period of the stigma of this plant species [24]. This result has also been observed in Ngaoundéré on this same plant [7]. The positive and significant contribution of Ch.…”

Section: Influence Of Faunasupporting

confidence: 61%

“…The attractiveness of Ce. sesamoides nectar could be partially explained by its reported high production and total sugar concentration (27.76 -30.60%) [7], compared to range 15-75% in which most of the plant species fall [25] . The abundance of Ch.…”

Section: Relationship Between Visits and Flowering Stagesmentioning

confidence: 98%

“…The abundance of foragers (highest number of individuals foraging simultaneously per flowers and per 1000 flowers) [7] and the foraging speed (number of flowers visited by individual bee per minute [14] were recorded during the same dates and daily periods as the registration of the duration of visits. The abundance of foragers per flower was noted following the direct counting.…”

Section: Study Of Daily Rhythm Of Visits Ofmentioning

confidence: 99%

“…The flower constancy could be partially due to the high sugar content of the nectar of Ce. sesamoides [7] . Similar result has been found on Vigna unguiculata [21] and Cajanus cajan [19].…”

Section: Influence Of Faunamentioning

confidence: 99%

“…sesamoides is not well known. The only published data on this plant in Cameroon is that Tchuenguem et al [7] done in same region. According to this work: (a) Apis mellifera increased the percentage of fruiting rate by 24.59% the number of seeds/pod by 11.63% and the percentage of the number of seeds per pod by 3.93%.…”

Section: Introductionmentioning

confidence: 99%

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Impact of single visit of Chalicodoma cincta Fabricius 1871 (Hymenoptera: Megachilidae) on Ceratotheca sesamoides Endl. 1753 (Pedaliaceae) flowers at Ngaoundéré (Cameroon)

2020

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Research on impact of Chalicodoma cincta bees on pod and seed yields of Ceratotheca sesamoides in an experimental field was carried out from June to September in 2015 and 2016 at Dang. Observations were made on 291 flowers divided in four treatments: two treatments made with flowers protected and uncovered when flowers were opened to allow Ch. cincta visits and two other treatments with flowers destined to opening and closing without the visit of insect or any other organism. Bee's daily rhythm of activities, its foraging behavior on flowers and its pollination efficiency were evaluated. Results show that, Ch. cincta foraged on Ce. sesamoides flowers throughout its whole blooming period. On flowers, individual bees intensely harvested nectar and slightly collected pollen. The mean duration of a visit per flowers was 3.19 sec for nectar harvest visits and 3.89 sec for pollen collection visits. The great mean Impact of single… Djakbé Jackson Dapsia et al.

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Section: Influence Of Faunasupporting

confidence: 61%

Section: Relationship Between Visits and Flowering Stagesmentioning

confidence: 98%

Section: Study Of Daily Rhythm Of Visits Ofmentioning

confidence: 99%

“…The flower constancy could be partially due to the high sugar content of the nectar of Ce. sesamoides [7] . Similar result has been found on Vigna unguiculata [21] and Cajanus cajan [19].…”

Section: Influence Of Faunamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of single visit of Chalicodoma cincta Fabricius 1871 (Hymenoptera: Megachilidae) on Ceratotheca sesamoides Endl. 1753 (Pedaliaceae) flowers at Ngaoundéré (Cameroon)

2020

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Pollination efficiency of Apis mellifera(Hymenoptera: Apidae) on Lantana camara(Verbenaceae) flowers at Dang (Ngaoundéré, Cameroon)

Louabe¹,

Tekombo²,

Tope³

et al. 2022

J. Entomol. Zool. Stud.

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To evaluate the impact of Apis mellifera on Lantana camara production, foraging and pollination activities of this bee were studied at Dang. In August 2016 and 2017, 540 floral bunches with flowers in bud were labeled on 25 plants to constitute four treatments : 120 bunches left unprotected, 120 bunches protected from insects ; 200 bunches protected, then uncovered, visited exclusively by A. mellifera and rebagged ; 100 bunches protected, then uncovered and rebagged, without insect or any other organism visits. Foraging behavior of A. mellifera, on flowers its pollination efficiency, the fruiting rate, the percentage of mature fruit and the percentage of normal (well developed) fruits were evaluated. Results show that among 13 insect species recorded on L. camara flowers after two seasons of observations, A. mellifera was the most represented with 40.38% of 317 visits. This bee exclusively harvested pollen, almost throughout the day. The fruiting rate, the percentage of mature fruits and the percentage of normal fruits of treatments with unprotected floral bunches were significantly higher than those of treatments with floral bunches protected from insects. Through its pollination efficiency, A. mellifera increased the fruiting rate, the percentage of mature fruits and the percentage of normal fruits by 59.95%, 28.27% and 44.12% respectively. This Verbenaceae can be cultivated to help maintain colonies of A. mellifera during the rainy season for a good production of honey and pollen as hive products.

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Foraging and pollination activity of Papilio demodocus (Lepidoptera : Papilionidae) on the flowers of Lantana camara (Verbenaceae) at Dang (Ngaoundéré, Cameroon)

2020

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To assess the impact of Papilio demodocus on the fruit production of Lantana camara, the activity of foraging and pollination of flowers by this butterfly was studied in Dang, in May 2016 and 2017. Each year, 540 floral bunchs with flowers in bud were labeled on 32 plants to constitute four treatments: 120 bunchs left in free pollination, 120 bunchs protected from insects ; 200 bunchs protected, then uncovered, visited exclusively by P. demodocus and rebagged ; 100 bunchs protected, then uncovered and rebagged, without insect or any other organism visits. The foraging behavior of P. demodocus on the flowers, its pollinating activity, the rate of fruiting, the percentage of mature fruit and the percentage of normal (well developed) fruit were evaluated. The results show that out of 18 species of insects recorded on the flowers of L. camara, P. demodocus comes in first position with 22.18% of 284 visits and collects exclusively and strongly the nectar. The rate of fruiting, the percentage of mature fruit and the percentage of normal fruit were significantly higher in treatments with free pollination flowers than in those with flowers protected from insects. Via its pollinating efficiency, P. demodocus increased the fruiting rate by 33.28%, the percentage of mature fruit by 28.10% and the percentage of normal fruit by 25.85%. The cultivation of L. camara is important for keeping P. demodocus Foraging Stéphane Louabé et al.

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Impact de l’activité de butinage de <i>Apis mellifera</i> Linné (Hymenoptera: Apidae) sur la pollinisation et les rendements de <i>Ceratotheca sesamoides</i> Endl. (Pedaliaceae) à Dang (Ngaoundéré, Cameroun)

Cited by 6 publications

References 0 publications

Impact of single visit of Chalicodoma cincta Fabricius 1871 (Hymenoptera: Megachilidae) on Ceratotheca sesamoides Endl. 1753 (Pedaliaceae) flowers at Ngaoundéré (Cameroon)

Impact of single visit of Chalicodoma cincta Fabricius 1871 (Hymenoptera: Megachilidae) on Ceratotheca sesamoides Endl. 1753 (Pedaliaceae) flowers at Ngaoundéré (Cameroon)

Pollination efficiency of Apis mellifera(Hymenoptera: Apidae) on Lantana camara(Verbenaceae) flowers at Dang (Ngaoundéré, Cameroon)

Foraging and pollination activity of Papilio demodocus (Lepidoptera : Papilionidae) on the flowers of Lantana camara (Verbenaceae) at Dang (Ngaoundéré, Cameroon)

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