Oviposition decisions in the seed beetle, Callosobruchus maculatus
females distributed their eggs in a manner that maximized the amount of ... laid more eggs when presented with seeds, but did not distribute their eggs less .... As egg density increases females should lay, on average, twice as .... of the seed is largely flat and elliptical, its surface area is easy to calculate based on length and .
[ 2003.J Stored Products Res.Cope&Fox.Egg dispersion.pdf - Read/Download File
Pea Leaf Weevil - MSU Extension
greyish-brown beetles about ¹⁄5" long with a broad-shaped ... fava beans. ... lay eggs. Lentils are not considered a host for pea leaf weevil. Secondary host crops ... halfmoon-shaped notch in the leaf edge (Figures 1A/B). ... Females lay as many as 1,655 eggs over their life ... average number of plants with feeding damage.
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Download as a PDF - CiteSeerX
Jan 22, 2008 ... drous and polyandrous females in the hide beetle, Dermestes ... polyandrous treatments, male mating order did not affect paternity ... laid significantly more eggs and thus the actual number of eggs sired ..... 3 = 19.73, P = 0.0002; Figure 1a). .... curs in the hide beetle; on average, males mated with a poly-.
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Corn Rootworms: Biology, Ecology and - Field Crops Team
The southern corn rootworm3 is not a ... eggs are oval shaped, yellowish in color and are found in soil (Fig. 1A). ... egg development, females lay eggs in the soil in ... vegetables and many legumes. ... Figure 5A. Adult corn rootworm silk feeding damage. and root re-growth ... beetle per plant), a threshold is reached and.
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PDF(202K) - Wiley Online Library
females by infected males confers a fitness advantage to Wolbachia in infected females. ... mechanism that benefits the bacteria but, apparently, not the host. .... The number of eggs laid by each female was. 694 ... average six eggs. Next, the .... 1a) 25% of R1 ..... Wolbachia in the azuki bean beetle Calosobruchus chinensis.
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Leafy Spurge Control Using Flea Beetles (Aphthona spp
Apr 25, 2016 ... Aphthona spp. females produce an average of 220 to 280 eggs over a lifetime. Eggs are yellow and laid on the soil surface or slightly below, near the leafy ... Figure 2. General flea beetle life cycle in North Dakota. All species except ... Over -harvest of beetles is not possible because many flea beetles fall to ...
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Stored-Grain Insects - US Department of Agriculture
Mar 4, 2015 ... by the five primary pests, it is not likely that any other insect will damage it ..... polished, blackish or chestnut-brown beetle (fig. 1A). The head emends into ... Figure 1. Grain weevils: Left, Granary weevil adult; center, Rice weevil .... Under normal conditions, each female lays an average of 40 eggs: although,.
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Male density and rapid evolution of genital morphology in - bioRxiv
May 10, 2016 ... Adult beetles live approximately two weeks without the need ... dried mung beans were added for the females to use for egg laying. ... Body size, testicular size, and average intromittent ... 1A) captured after the removal of the seminal ... polyandrous treatment experienced a decline in the number of viable ...
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Biology of Diorhabda elongata deserticola - DigitalCommons
Jan 1, 2003 ... days were calculated using average daily temperatures. The calculated degree- day ... case the prediction of adult emergence was not made for ... iting females were monitored daily for egg-laying and longevity ... beetle activity and for the presence and numbers of eggs. ..... 1A), based on 432 egg masses ...
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When and where to lay your eggs? - edoc - Hu-berlin.de
nymphs that hatch from eggs laid by female insects on specific host plant species . ... strategies adapted to highly productive habitats with more-than-average high- ..... phytophagous insects are not only rich in species number but also in the ..... model on bean weevil oviposition decision rules against empirical data .
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Laboratory evolution of host plant utilization in the bean weevil - Hal
Jan 1, 1995 ... female oviposition preference on chickpea displayed the same ... larva bores into a seed where the beetle spends its larval and pupal stages. ... equal numbers of bean seeds and chickpea seeds of about the .... mean percentages of eggs laid on chickpeas in the Cicer lines, no ... On the beans the average.
[ hal-00894112.pdf - Read/Download File
2. - Animal Behavior
The number of times a female mated had minimal direct and no indirect fitness ... the burying beetle Nicrophorus vespilloides to investigate both se- .... carcass stimulates egg laying. Eggs .... The high average fertility of females mated to the same male ... Figure 1. Effects of different levels of repeated mating on (A) to- tal egg ...
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Biological control against the cowpea weevil - De Gruyter
Apr 14, 2014 ... According to the results seen in figures 1a, b, and c, the in- dividuals .... that for the average number of eggs laid by a female (22), the fertility ...
[ $002fj$002fjppr.2014.54.issue-3$002fjppr-2014-0032$002fjppr-2014-0032.pdf?t:ac=j$002fjppr.2014.54.issue-3$002fjppr-2014-0032$002fjppr-2014-0032.xml - Read/Download File
Female and Male Moths Display Different Reproductive - Plos
Oct 7, 2014 ... maximize genetic benefits from multiple mating, females have evolved strategies to prefer ... results of this study do not support the sperm and nutrient replenishment ... In S. litura, eggs are laid in large clusters and offspring competition, ... obtain their maximum reproductive success in many insect species.
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Feeding-induced rearrangement of green leaf volatiles - eLife
May 14, 2013 ... females. We detected the isomeric shift in the host plant Datura .... or on their way to the plant, so they lay their eggs on other plants. ... not by the plant itself ( Allmann and Baldwin, 2010). ... plants compared with control plants (Figure 1A, day). ...... During the day volatiles were sampled at an average light.
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tradeoffs in performance on different hosts - Bio 120 Home Page
cumbers reduces ﬁtness on lima beans ... no beetles were seen on this plant. The ... was estimated by the number of eggs laid ... lowing females to oviposit on out leaves. .... represent average within-site genetic cor- .... shown in Figure 1a.
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No Detectable Fertility Benefit from a Single Additional Mating - Plos
receiving an additional mating alleviates sperm limitation in wild females. ... received an additional mating did not lay more fertilised eggs in total, nor did they lay ... are expected to increase their fitness by mating multiply with many ..... Figure 1. Fecundity, absolute fertility and relative fertility, summed over the 10- day ...
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fulltext - DiVA
that female honey locust beetles benefit nutritionally from mating due to the large ejaculates ... but not male, nematodes evolve under experimental sexual coevolution. Proc. R. Soc. ..... number of eggs they fertilize (Bateman 1948, Trivers 1972). ..... Overall, sexual selection was stronger in males than in females (Figure 1A,.
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by a hymenopteran parasitoid, as part of an IPM - ETH E-Collection
ETH No. 14126. Biological control of the bean weevil, Acanthoscelides .... 1a. Summary. Acanthoscelides obtectus (Say) (Col.: Bruchidae) and ... was found carried an average of 5 parasitoids per 1000 beans, with a ..... beetles (Rasplus, 1989). .... When kept with honey, the number of eggs a parasitoid laid during one.
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Full Text (PDF) - Proceedings of the National Academy of Sciences
Sep 20, 2005 ... female to oviposit at an accelerated rate, so that she does not, by ... to as Utetheisa), which we have studied for a number of years, both in the ... When in possession of PA, females laid eggs at ... on a diet based on pinto beans, totally devoid of PAs. .... 1A contain the females from experimental categories iii.
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