Effect of certainBrassica plants on biology of the cabbage aphidBrevicoryne brassicae under laboratory conditions

Ulusoy, M. Rıfat; Ölmez-Bayhan, Selime

doi:10.1007/bf02981313

Cited by 24 publications

(16 citation statements)

References 14 publications

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“…High mortality (50–72%) during early nymphal stages observed in our study may be due to host‐specific attributes, which has been documented in other studies. Specifically, Ulusoy & Olmez‐Bayhan () reported host‐specific mortalities ranging from 16 to 88% when aphids were confined to different brassica hosts (broccoli, cabbage, mustard, cauliflower, turnip, and rapeseed); the lowest mortality (16%) was observed when cabbage aphids were confined to cabbage.…”

Section: Discussionmentioning

confidence: 99%

Feeding location affects demographic performance of cabbage aphids on winter canola

Cibils–Stewart

Sandercock

2015

Entomologia Exp Applicata

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The cabbage aphid, Brevicoryne brassicae L. (Hemiptera: Aphididae), is a perennial pest that specializes on plants of the Brassicaceae family, attacking winter canola (Brassica napus L.) mainly during and after flowering. Under field conditions, cabbage aphid colonizes the upper flowering canopy. Population dynamics of aphids in the flowering canopy could be regulated by differences in either plant quality (bottom-up) or predatory (top-down) forces. The goal of our study was to determine the effect of feeding location on cabbage aphid demography. A stage-structured matrix population model was constructed for aphids restricted to reproductive or vegetative plant tissues of canola. We found that feeding location had a large impact on demography of cabbage aphid; the finite rate of increase (k AE SEM) was higher when aphids were restricted to reproductive tissues, compared to aphids feeding on vegetative tissues: 1.25 AE 0.01 vs. 1.17 AE 0.01 (leaves). Aphids confined to reproductive tissues with higher k exhibited shorter generation times (T = 14.2 AE 0.2 days) and 53-75% higher net reproductive rates (R 0 = 23.3 AE 1.7) than aphids feeding on vegetative tissues. Prospective analyses showed that there was a nymph-skewed stable stage distribution, and elasticity values revealed that k is most sensitive to changes in stasis of adults staying in the adult stage and to adult survival. Retrospective analyses indicated that variation in adult fecundity (value of 0.05) had the largest effect on population dynamics but collectively, growth of nymphal stage 2-3, 3-4, and 4 to adult accounted for most of the difference in k between the treatments. Monitoring programs should target adults and penultimate instars colonizing reproductive tissues of canola plants in the field as aphids on these plant structures contribute most to population growth.

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Section: Discussionmentioning

confidence: 99%

Feeding location affects demographic performance of cabbage aphids on winter canola

Cibils–Stewart

Sandercock

2015

Entomologia Exp Applicata

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“…However, any benefit of predator refuge derived from glucosinolates may be offset by slower aphid development or reproduction, because of potential energetic costs of sequestering these toxic compounds (Cole 1997a). While not framing their study specifically in terms of glucosinolate content, Ulusoy & Olmez-Bayhan (2006) found that aphids grown on another wild mustard, Sinapis arvensis (L.), had lower reproductive rates than those reared on domesticated B. oleracea cultivars. Aphids on S. arvensis also had shorter generation times, however, resulting in no net difference in intrinsic rate of increase for aphids on wild mustard vs. cole crops in the absence of predation.…”

Section: Introductionmentioning

confidence: 99%

Chemically mediated tritrophic interactions: opposing effects of glucosinolates on a specialist herbivore and its predators

Chaplin‐Kramer

Kliebenstein

Chiem

et al. 2011

Journal of Applied Ecology

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Summary1. The occurrence of enemy-free space presents a challenge to the top-down control of agricultural pests by natural enemies, making bottom-up factors such as phytochemistry and plant distributions important considerations for successful pest management. Specialist herbivores like the cabbage aphid Brevicoryne brassicae co-opt the defence system of plants in the family Brassicaceae by sequestering glucosinolates to utilize in their own defence. The wild mustard Brassica nigra, an alternate host for cabbage aphids, contains more glucosinolates than cultivated Brassica oleracea, and these co-occur in agricultural landscapes. We examined trade-offs between aphid performance and predator impact on these two host plants to test for chemically mediated enemy-free space. 2. Glucosinolate content of broccoli B. oleracea and mustard B. nigra was measured in plant matter and in cabbage aphids feeding on each food source. Aphid development, aphid fecundity, predation and predator mortality, and field densities of aphids and their natural enemies were also tested for each food source. 3. Cabbage aphids growing on high glucosinolate plants like B. nigra contained more glucosinolates than aphids on lower glucosinolate B. oleracea. Aphids on B. nigra had shorter generation times and greater daily fecundity, while their predators (Diptera: Syrphidae) had lower feeding and higher mortality rates. Lower syrphid densities were found on B. nigra than on B. oleracea in the field. 4. Synthesis and applications. This study presents physiological and field evidence to suggest that weedy B. nigra may provide enemy-free space from an important predator. Habitat near crops should be examined for its potential to provide enemy-free space and compromise otherwise effective biological control. The issue of pest control must be considered from the bottom up as well as the top down.

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“…Aphids have high reproductive potential. Each adult produces up to 60 nymphs which develop and reproduce in about one week (Ulusoy and Olmez, 2006). Attack by aphid colonies and the aphid damage due to sap sucking, can cause yield losses from 80% to complete crop failure, if the attack and damage start at seedling stage (Singh and Bakhetia, 1987).…”

Section: Introductionmentioning

confidence: 99%

Efficacy of lantana (Lantana camara) extract application against aphids (Brevicoryne brassicae) in rape (Brassica napus) over varied periods of time

Mvumi¹,

Maunga²

2018

Afr. J. Biotechnol.

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Contact bioefficacy of lantana (Lantana camara L.) leaf extract (LLE) against rape aphids (Brevicoryne) and distilled water were the positive and negative controls, respectively. Treatments were arranged in a randomized complete block design (RCBD); 3 x 5 factorial arrangement, replicated 5 times. Adult aphids (10) were introduced to each plant. Aphid mortality at 6, 12, 18 and 24 h after application of treatments was evaluated. There was no significant interaction between seed brand and treatment at all times. Lantana treatments showed significant mortality effect (p < 0.001) on aphids at all times. The highest LLC (3 kg l -1 ) showed the highest aphid mortality at each period of time after application, and of all the periods, the longest time after application (24 h), showed the highest mortality (9.67). It is recommended that smallholder farmers use 3 kg l -1 LLC to control aphids on rape, and allow 24 h after application to get the greatest kill.

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Effect of certainBrassica plants on biology of the cabbage aphidBrevicoryne brassicae under laboratory conditions

Cited by 24 publications

References 14 publications

Feeding location affects demographic performance of cabbage aphids on winter canola

Feeding location affects demographic performance of cabbage aphids on winter canola

Chemically mediated tritrophic interactions: opposing effects of glucosinolates on a specialist herbivore and its predators

Efficacy of lantana (Lantana camara) extract application against aphids (Brevicoryne brassicae) in rape (Brassica napus) over varied periods of time

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