Biological characteristics of three<i>Trichogramma</i>species on the eggs of diamondback moth (<i>Plutella xylostella</i>L.)

Akbari, Fatemeh; Askarianzadeh, Alireza; Zamani, Abbas Ali; Hosseinpour, Mohammad Hossein

doi:10.1080/03235408.2012.727325

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…(L.135-136) R1-24: L103 the sentence starting on this line is fine, but it seems to be out of place and does not follow from the previous sentence. Response: This sentence is now in the first paragraph of Material and Method, and was modified to add a link with the previous sentence by saying that given the relative importance of Trichogramma as a biocontrol agent, this study could help us suggest new ideas for improving their role in biocontrol, as understanding how life-history traits vary and covary can have important implications in rearing and field performance (Akbari et al, 2012;Consoli et al, 2010). (L.136-140) R1-25: L107 surely 'at 22' Response: We corrected this mistake as suggested.…”

Section: R1-20: L94 What About 'Shape Of This Relationship' Rather Th...mentioning

confidence: 99%

The relationship between dispersal and pace-of-life at different scales

Deere

2023

PCI Zoology

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After reading the manuscript and the assessment of the two reviewers, several points were raised that need to be addressed and which I believe will improve the quality of the manuscript. One point I would like to highlight, and on which I agree with both reviewers, is that of how dispersal is assessed and discussed. This point is central to the manuscript and requires clarity. I suggest revision of the manuscript in which the authors need to carefully address the reviewers' comments. With kind regards, Jacques DeereResponse: We would like to thank the recommender for accepting to look at our manuscript. We did our best to address all the points raised by the reviewers, among them the issue of dispersal. All responses are detailed below reviewers' comments. ANSWERS TO COMMENTS FROM ANONYMOUS REVIEWERR1-1: This is a very detailed study of fecundity and other life-history information in many lines of five species from the same genus of parasitoids. The experiments are clearly described and well controlled and the complex statistical analysis is carried out in a clear way with scripts available on GitHub. Response: We thank the anonymous reviewer for this positive assessment of our study and how it was presented and hope that our revised version did answer all of their comments. R1-32: L135 'lines' isn't neededResponse: 'lines' was removed in the revised version as suggested L.169 R1-33: L136 how are the single females selected? Is there an age that can be applied to them? Response: Single healthy females were selected at random in the population. Females were between 24 to 48 hours old. That information was added to the manuscript. (L.161-164; L.170-171) R1-34: L138/140 inconsistency in use of a space between value and units. 10cm and 10 cm. Response: We modified the manuscript to stay consistent by adding spaces between all values and units, according to the International System of Units.R1-35: L140 more detail on the tube needed. What's the internal diameter? Is the end of the tube flush with one of the walls of the rearing vial? Is it clear? Response: We used a clear pipe with an internal diameter of 0.5 cm, going through vials foam caps, without protruding from it. Details were added to the experimental design section. (L.175-179) R1-36: Fig 1 might be better to have a zoomed in picture of eggs to see the darkened ones more clearly.Response: The picture of darkened eggs was added, taking the place of the picture of host egg strips (Figure 1). We also modified the figure as suggested by the second reviewer in comment MT-8 by removing line details (as described in R1-1), now in Supplemental Table S1-1. R1-37: L176 I think noon is pm R1-39: L190 I think lognormal should be hyphenated Response to R1-37 and R1-39: We thank the reviewer for those misspellings and corrected them with Log-Normal in the revised version, as noted in McElreath (2020). (L.248) R1-40: L209-210 I suggest a reference to this way of treating the random line effect Response: We modelled line-level random effects as a variance-covariance matri...

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Section: R1-20: L94 What About 'Shape Of This Relationship' Rather Th...mentioning

confidence: 99%

The relationship between dispersal and pace-of-life at different scales

Deere

2023

PCI Zoology

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“…For instance, T. brassicae is used on a large scale against Ostrinia nubilalis, the European corn borer (Mertz et al, 1995), and T. evanescens, T. cacoeciae, or a mix of the two species can be used against Cydia pomonella, an apple pest (Sigsgaard et al, 2017). In addition to their interest as laboratory model species to investigate the pace of life, the identification of correlations between life-history traits in Trichogramma could open up new avenues to improve their efficiency as biocontrol agents, through the optimization of their rearing or field performance (Consoli et al, 2010;Akbari et al, 2012).…”

Section: Biological Materialsmentioning

confidence: 99%

Life-history traits, pace of life and dispersal among and within five species of Trichogramma wasps: a comparative analysis

Guicharnaud¹,

Groussier²,

Beranger³

et al. 2023

Peer Community Journal

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Major traits defining the life history of organisms are often not independent from each other, with most of their variation aligning along key axes such as the pace-of-life axis. We can define a pace-of-life axis structuring reproduction and development time as a continuum from less-fecund, longer-developing "slow" types to more-fecund, shorter-developing "fast" types. Such axes, along with their potential associations or syndromes with other traits such as dispersal, are however not universal; in particular, support for their presence may be taxon and taxonomic scale-dependent. Knowing about such life-history strategies may be especially important for understanding eco-evolutionary dynamics, as these trait syndromes may constrain trait variation or be correlated with other traits. To understand how life-history traits and effective dispersal covary, we measured these traits in controlled conditions for 28 lines from five species of Trichogramma, which are small endoparasitoid wasps frequently used as a biological model in experimental evolution but also in biocontrol against Lepidoptera pests. We found partial evidence of a pace-of-life axis at the interspecific level: species with higher fecundity also had faster development time. However, faster-developing species also were more likely to delay egg-laying, a trait that is usually interpreted as "slow". There was no support for similar covariation patterns at the within-species line level. There was limited variation in effective dispersal between species and lines, and accordingly, we did not detect any correlation between effective dispersal probability and life-history traits. We discuss how expanding our experimental design by accounting for the density-dependence of both the pace of life and dispersal might improve our understanding of those traits and how they interact with each other. Overall, our results highlight the importance of exploring covariation at the "right" taxonomic scale, or multiple taxonomic scales, to understand the (co)evolution of life-history traits. They also suggest that optimizing both reproductive and development traits to maximize the efficiency of biocontrol may be difficult in programs using only one species.

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“…Indeed, T. brassicae is commercially available and often used against Ostrinia nubilalis , the European corn borer (Mertz et al, 1995), and T. evanescens or T. cacoeciae against Cydia pomonella (Sigsgaard et al, 2017). Understanding how life-history traits vary and covary can have important implications in this system and can help predict the rearing or field performance of biocontrol agents (Akbari et al, 2012; Consoli et al, 2010). Trichogramma are also key model species in ecological, physiological, or invasion biology studies thanks to their small size, rather short development time (13-15 days, 22°C), or also the fact that it can be possible to choose sexual or asexual lines.…”

Section: Introductionmentioning

confidence: 99%

Life-history traits, pace of life and dispersal among and within five species ofTrichogrammawasps: a comparative analysis

Guicharnaud

Groussier

Beranger

et al. 2023

Preprint

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Major traits defining the life history of organisms are often not independent from each other, with most of their variation aligning along key axes such as the pace-of-life axis. These axes, along with their potential associations or syndromes with other traits such as dispersal, are however not universal; in particular, support for their presence may be taxon and taxonomic scale-dependent. Knowing about such life-history strategies may be especially important for biological control agents, as these trait syndromes may constrain the ability to optimize production, as well as their efficiency in the field. To understand how life-history traits and dispersal covary in such contexts, we measured these traits in controlled conditions for 28 lines from 5 species ofTrichogramma, small endoparasitoid wasps frequently used against Lepidoptera pests. We found partial evidence of a pace-of-life axis at the interspecific level: species with higher fecundity also had faster development time. However, faster developing species also were more likely to delay egg-laying, a trait that is usually interpretable as "slow". There was no support for similar covariation patterns at the within-species line level. There was limited variation in dispersal between species and line, and accordingly, we did not detect any correlation between dispersal rates and life-history traits. We discuss how expanding our experimental design by accounting for the density-dependence of both the pace of life and dispersal might reveal a dispersal syndrome in future studies. Overall, our results highlight the importance of exploring covariation at the "right" taxonomic scale, or multiple taxonomic scales, to understand the (co)evolution of life history traits. They also suggest that optimizing all interesting life-history traits for inoculative releases may be difficult in programs using one species.

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Biological characteristics of threeTrichogrammaspecies on the eggs of diamondback moth (Plutella xylostellaL.)

Cited by 3 publications

References 10 publications

The relationship between dispersal and pace-of-life at different scales

The relationship between dispersal and pace-of-life at different scales

Life-history traits, pace of life and dispersal among and within five species of Trichogramma wasps: a comparative analysis

Life-history traits, pace of life and dispersal among and within five species ofTrichogrammawasps: a comparative analysis

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