Memory duration is positively correlated with host fruit preference and offspring performance in a polyphagous frugivore

2020 ◽  
Vol 59 (3) ◽  
pp. 572-581
Author(s):  
Rehan Silva ◽  
Katharina Merkel ◽  
Anthony R Clarke
Keyword(s):  
Offspring Performance ◽  
Host Fruit ◽  
Fruit Preference

scholarly journals Diachasmimorpha longicaudata Parasitism Response to Medfly Host Fruit and Fruit Infestation Age

Insects ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 211 ◽  
Author(s):  
Ahlem Harbi ◽  
Luis de Pedro ◽  
Fernando A. A. Ferrara ◽  
José Tormos ◽  
Brahim Chermiti ◽  
...  
Keyword(s):  
Biological Control Agent ◽  
Behavioral Responses ◽  
Mass Rearing ◽  
Field Trials ◽  
Control Agent ◽  
Species Selection ◽  
Host Fruit ◽  
Fruit Species ◽  
Diachasmimorpha Longicaudata ◽  
Fruit Preference

The parasitoid Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae) is increasingly being used in integrated pest management (IPM) programs as a biological control agent in order to suppress tephritid fruit flies of economic importance. Innate and acquired behavioral responses—such as pest host fruit preference—of parasitoids can modulate their efficiency in the field and should be taken into consideration prior to parasitoid species’ selection for mass-rearing. We have assessed the influence of medfly-infested (two infestation ages, 1 and 4-d-old) and uninfested fruit species on host preference and efficiency of D. longicaudata by using a multistep assay including olfactory, laboratory and semi-field trials. We found that D. longicaudata was significantly more attracted to medfly-infested apples for both infestation ages, with the oldest being the most preferred. D. longicaudata exhibited a significant preference among the four fruits tested. The implications of these behavioral responses of D. longicaudata to medfly host fruits and infestation age are discussed in relationship to its use in IPM programs in the Mediterranean basin area.

Influence of host fruit species of medfly Ceratitis capitata on the parasitism level of Aganaspis daci.

2016 ◽  
Vol 34 (2) ◽  
pp. 95-97
Author(s):  
A. Y. Ali ◽  
◽  
A. Ahmad ◽  
J. Ammar ◽  
R. Darwish ◽  
...  
Keyword(s):  
Ceratitis Capitata ◽  
Host Fruit ◽  
Fruit Species ◽  
Parasitism Level

scholarly journals Predation on Drosophila suzukii within Hedges in the Agricultural Landscape

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 305
Author(s):  
Alexandra Siffert ◽  
Fabian Cahenzli ◽  
Patrik Kehrli ◽  
Claudia Daniel ◽  
Virginie Dekumbis ◽  
...  
Keyword(s):  
Agricultural Landscape ◽  
Vital Role ◽  
Agricultural Landscapes ◽  
Gut Content ◽  
Drosophila Suzukii ◽  
Natural Habitats ◽  
Host Fruit ◽  
Molecular Gut Content Analysis ◽  
Wild Fruits ◽  
Diverse Community

The invasive Drosophila suzukii feeds and reproduces on various cultivated and wild fruits and moves between agricultural and semi-natural habitats. Hedges in agricultural landscapes play a vital role in the population development of D. suzukii, but also harbor a diverse community of natural enemies. We investigated predation by repeatedly exposing cohorts of D. suzukii pupae between June and October in dry and humid hedges at five different locations in Switzerland. We sampled predator communities and analyzed their gut content for the presence of D. suzukii DNA based on the COI marker. On average, 44% of the exposed pupae were predated. Predation was higher in dry than humid hedges, but did not differ significantly between pupae exposed on the ground or on branches and among sampling periods. Earwigs, spiders, and ants were the dominant predators. Predator communities did not vary significantly between hedge types or sampling periods. DNA of D. suzukii was detected in 3.4% of the earwigs, 1.8% of the spiders, and in one predatory bug (1.6%). While the molecular gut content analysis detected only a small proportion of predators that had fed on D. suzukii, overall predation seemed sufficient to reduce D. suzukii populations, in particular in hedges that provide few host fruit resources.

Effects of water deficiency on preference and performance of an insect herbivore Ostrinia furnacalis

2021 ◽  
pp. 1-10
Author(s):  
M.Y. Duan ◽  
H. Zhu ◽  
H. Wang ◽  
S.Y. Guo ◽  
H. Li ◽  
...  
Keyword(s):  
Driving Forces ◽  
Oviposition Preference ◽  
Precipitation Pattern ◽  
Ostrinia Furnacalis ◽  
Oviposition Choice ◽  
Offspring Performance ◽  
Corn Borer ◽  
Limited Mobility ◽  
Offspring Fitness ◽  
And Performance

Abstract With further climate change still expected, it is predicted to increase the frequency with plants will be water stressed, which subsequently influences phytophagous insects, particularly Lepidoptera with limited mobility of larvae. Previous studies have indicated that oviposition preference and offspring performance of Lepidoptera insects are sensitive to drought separately. However, the integration of their two properties is not always seen. Here, we evaluated changes in oviposition selection and offspring fitness of a Lepidoptera insect under three water-stressed treatments using a model agroecosystem consisting of maize Zea mays, and Asian corn borer Ostrinia furnacalis. Results found that female O. furnacalis preferred to laying their eggs on well-watered maize, and then their offspring tended to survive better, attained bigger larvae mass, and developed more pupae and adults on the preferred maize. Oviposition selection of O. furnacalis positively correlated with height and leaf traits of maize, and offspring fitness positively related with water content and phytochemical traits of hosts. Overall, these results suggest that oviposition choice performed by O. furnacalis reflects the maximization of offspring fitness, supporting preference–performance hypothesis. This finding further highlights that the importance of simultaneous evaluation of performance and performance for water driving forces should be involved, in order to accurately predict population size of O. furnacalis under altered precipitation pattern.

scholarly journals Effects of thermal conditioning on the performance of Pocillopora acuta adult coral colonies and their offspring

Coral Reefs ◽  
2021 ◽  
Author(s):  
Crystal J. McRae ◽  
Wen-Bin Huang ◽  
Tung-Yung Fan ◽  
Isabelle M. Côté
Keyword(s):  
Nuclear Power ◽  
Direct Evidence ◽  
Lunar Cycle ◽  
Ocean Warming ◽  
Active Management ◽  
Management Approach ◽  
Offspring Performance ◽  
Lower Maximum ◽  
Management Techniques ◽  
Reproductive Cycles

AbstractOcean warming induced by climate change is the greatest threat to the persistence of coral reefs globally. Given the current rate of ocean warming, there may not be sufficient time for natural acclimation or adaptation by corals. This urgency has led to the exploration of active management techniques aimed at enhancing thermal tolerance in corals. Here, we test the capacity for transgenerational acclimation in the reef-building coral Pocillopora acuta as a means of increasing offspring performance in warmer waters. We exposed coral colonies from a reef influenced by intermittent upwelling and constant warm-water effluent from a nuclear power plant to temperatures that matched (26 °C) or exceeded (29.5 °C) season-specific mean temperatures for three reproductive cycles; offspring were allowed to settle and grow at both temperatures. Heated colonies reproduced significantly earlier in the lunar cycle and produced fewer and smaller planulae. Recruitment was lower at the heated recruitment temperature regardless of parent treatment. Recruit survival did not differ based on parent or recruitment temperature. Recruits from heated parents were smaller and had lower maximum quantum yield (Fv/Fm), a measurement of symbiont photochemical performance. We found no direct evidence that thermal conditioning of adult P. acuta corals improves offspring performance in warmer water; however, chronic exposure of parent colonies to warmer temperatures at the source reef site may have limited transgenerational acclimation capacity. The extent to which coral response to this active management approach might vary across species and sites remains unclear and merits further investigation.

scholarly journals Nutritional status of adult ewes during early and mid-pregnancy. 1. Effects of plane of nutrition on ewe reproduction and offspring performance to weaning

animal ◽  
2008 ◽  
Vol 2 (1) ◽  
pp. 52-63 ◽  
Author(s):  
C. Muñoz ◽  
A.F. Carson ◽  
M.A. McCoy ◽  
L.E.R. Dawson ◽  
N.E. O’Connell ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Offspring Performance

Maternal effects and offspring performance: in search of the best method

Oikos ◽  
2004 ◽  
Vol 106 (2) ◽  
pp. 422-426 ◽  
Author(s):  
Miloš Krist ◽  
Vladimír Remeš
Keyword(s):  
Maternal Effects ◽  
Offspring Performance

High fiber diet reduces stereotypic behavior of gilts but does not affect offspring performance

2021 ◽  
Vol 243 ◽  
pp. 105433
Author(s):  
Thiago Bernardino ◽  
Patricia Tatemoto ◽  
José Evandro de Moraes ◽  
Beatrice Morrone ◽  
Adroaldo José Zanella
Keyword(s):  
Stereotypic Behavior ◽  
Offspring Performance ◽  
High Fiber ◽  
Fiber Diet ◽  
High Fiber Diet
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