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Fig 3 in A potential pheromone for the mass trapping of Aethina tumida (Coleoptera: Nitidulidae)

Fig 3. Attraction of combined male and female small hive beetle attraction to the pheromone blend in a flight tunnel. Means number of small hive beetles captured (± SE) with shared letters are not significantly different.

Fig 2 in A potential pheromone for the mass trapping of Aethina tumida (Coleoptera: Nitidulidae)

Fig 2. Small hive beetle male and female gas chromatography electroantennographic detector response to (a) 6-methyl-5-hepten-2-one; (b) 5-nonanal; (c) 6-decanal.

Fig 4 in A potential pheromone for the mass trapping of Aethina tumida (Coleoptera: Nitidulidae)

Fig 4. Attraction of combined male and female small hive beetles to the fruit blend in a flight tunnel. Means number of small hive beetles captured (± SE) with shared letters are not significantly different.

Fig. 1 in A potential pheromone for the mass trapping of Aethina tumida (Coleoptera: Nitidulidae)

Fig. 1. Representative total ion chromatogram of volatiles released by male small hive beetles (n = 100) and captured on a Tenax® porous polymer adsorbent. Peak number compound: (1) acetic acid; (2) ethyl acetate; (3) octanal; (4) 6-methyl-5-hepten-2-one; (5) nonanal; (6) decanal.

opencc-by-4.0May 2024View details →

Figure 1 in First record of the beekeeping pest Aethina tumida Murray (Coleoptera: Nitidulidae) for Honduras

Figure 1. Aethina tumida from El Zamorano, Honduras, dorsal and ventral views. (Scale = 2.0 mm.)

opencc-by-4.0Dec 2020View details →

Figura 3 in Primer registro del pequeño escarabajo de la colmena Aethina tumida Murray (Coleoptera: Nitidulidae) en colmenas de abejas africanizadas en Guatemala

Figura 3. Vista lateral de la larva de Galleria mellonella.

opencc-by-4.0Dec 2020View details →

Figura 2 in Primer registro del pequeño escarabajo de la colmena Aethina tumida Murray (Coleoptera: Nitidulidae) en colmenas de abejas africanizadas en Guatemala

Figura 2. Vista lateral de la larva de Aethina tumida.

opencc-by-4.0Dec 2020View details →

Figura 1 in Primer registro del pequeño escarabajo de la colmena Aethina tumida Murray (Coleoptera: Nitidulidae) en colmenas de abejas africanizadas en Guatemala

Figura 1. Habitus dorsal del adulto de Aethina tumida.

opencc-zeroJul 2021View details →

Data from: Evolution of starvation resistance in an invasive insect species, Aethina tumida (Coleoptera: Nitidulidae)

Starvation resistance, or the ability to survive periods without food, can shed light on selection pressure imposed by food scarcity, including chances to invade new regions as a result of human transport. Surprisingly little information is known about starvation resistance for invasive insect species. Given that native and invasive populations differ in starvation resistance, this would suggest different selection scenarios and adaptive shifts fostering invasion success. Here, we show striking differences in starvation resistance of adult small hive beetles Aethina tumida (SHB) between native and invasive populations. In the laboratory, starvation resistance of freshly-emerged laboratory-reared and field-collected adult females and males was evaluated in the beetle's native African range and in their invasive North American range. SHB in their native African range survived longer than SHB in their invasive North American range. Across ranges, females survived longer than males. Field-collected SHB survived in Africa longer than freshly-emerged ones, but not in the invasive range. This suggests no selection for starvation resistance in the invasive range, possibly due to differences between African and European-derived honey bee hosts facilitating a tradeoff scenario between reproduction and starvation resistance. The ability of adult females to survive up to two months without food appears to be one factor contributing to the invasion success of this species. Assuming food availability is usually high in the invasive ranges, and trade-offs between starvation resistance and fecundity/reproduction are common, it seems as if selection for starvation resistance during transport could set up potential trade-offs that enhance reproduction after invasion. It would be interesting to see if this is a possible general pattern for invasive insect species.

opencc-zeroAug 2023View details →

Thiamethoxam soil contaminations reduce the fertility of a soil-dwelling beetle (Aethina tumida)

The sixth mass extinction event is underway and environmental pollution is one major driver. Of particular concern are global insect declines, as their roles in ecosystem functionality and human food security are indispensable. Even though environmental pollutants are known to reduce fertility, their potential effects on insect fitness remain poorly understood - especially for soil-dwelling species. Here, we show that fertility of soil-dwelling beetles, Aethina tumida, is reduced, on average, by half due to field-realistic neonicotinoid soil contaminations. In the laboratory, pupating beetles were exposed via soil to concentrations of the neonicotinoid thiamethoxam that reflect global pollution of agricultural and natural habitats. Emerged adult phenotypes and reproduction were measured, and even the lowest concentration reported from natural habitats reduced subsequent reproduction by 50%. The data are most likely a conservative estimate as the beetles were only exposed during pupation. Since the tested concentrations reflect ubiquitous global soil pollution, the data reveal a plausible mechanism for ongoing insect declines. An immediate reduction in environmental pollutants is urgently required if our aim is to mitigate the prevailing loss of species biodiversity.

publicJul 2021View details →

Data from: Evolution of starvation resistance in an invasive insect species, Aethina tumida (Coleoptera: Nitidulidae)

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