Arthropods - Science topic

We sometimes see symphyla in non-running water in caves. Are they trapped or is it just a strategy to survive ?

Several morphological characteristics (adaptative or not) could be associated with the process of adaptation to a specific environment or microhabitat. For example, several troglobization processes (species with all the live cycle exclusively in caves) in non-related lineages are associated with the same morphological changes, such as anophtalmy, loss of pigmentation, appendage elongation, etc.

My question is: do there exist morphological changes (and which ones) in arthropods associated with the adaptation to live in a canopy? (and a bibliographic reference if possible).

Thank you very much!

I recently collected the most beautiful Anystis I've ever seen from under some tree bark and was hoping to check if it had been previously described. Unfortunately, it seems that not much work has been done on the genus? Does anyone know who I could contact about attempting an ID?

Particularly flipping specimnes when switching between dorsal and ventral views. Whatever I'm doing seems very difficult and was wondering if there's a better method out there.

Hi,

Dear Acarologists and everyone else.

I hope this day will bring you joy, happiness, and success.

I want to get your opinion. Which Software do you use to Illustrate mites or other arthropods? By Illustrate, I mean the usual line drawings in the publication. I use Adobe Illustrator, but I would love to try different options.

So, let me know what you are using or send your recommendations.

Does anyone have experience with AI in this regard? It would be great if we could use it.

Thank you for reading, and I am patiently awaiting your experiences and suggestions.

Regards.

Hi everyone.

Does anybody, in your experience, has any book recommendations (of recent date) for the aforementioned topics. I have the classic "Invertebrates zoology" of Rupert and Barnes, but it's quite old and, don't get me wrong, it's good for a general perspective, but still is lacking in new perspectives and discoveries regarding invertebrates.

Thank you for your attention.

I am interested in doing comet assy on arachnid spermatozoa, and I would like to know the best protocol to carry it out homemade. For example, which slide is suitable, how to adhere the low melting agarose, which buffers to use to make the cell suspension, etc.

When the arthropod specimens (in alcohol collection) are dirty and sometimes with fungus, what tips for cleaning do you advise in order to have clean samples for SEM ? (Most of them do not resist long ultrasonic cleaning because the cuticular armatures are fragile.) Is there any solution or treatment for dissolve fungus (and not chitin)?

comment faire un test de l'efficacité de la moustiquaire

I was having trouble identifying an arthropod found in fruits. I do not have a clear picture of that arthropod. If anyone can identify.?: help me to identify.

Dear colleagues! We plan to isolate mitochondria from freshwater amphipods, but didn't find any methods in literature - the closest found was the method of isolation from whiteleg shrimp Litopenaeus vannamei.

The problem is - the amphipods are quite small - around 1 cm long, so it's hard to isolate the gut before mitochondria isolation.

Will it work if we use just the sample of 10 g (or is that too much?) of amphipods and blender to homogenize it in isolation medium? Or it is crucial to select only some parts - for example only the amphipods legs and antennas?

P.S.: we do not have chitinase, nor the chance to get it in time.

Hello,

I am looking if anyone knows about any chemical solution that could function as an alternative way (not lactophenol cotton blue, chlorazol black...) to stain the chitin of internal sclerotized genitalia and other structures of arthropods.

Additionally, does anyone have a digital version (or just scaned) of Notes on Microscopical technique for Zoologists by C.F.A. Pantin, 1946. Or any other book or resource that describes protocols for chitin staining?

Regards,

Pedro

I have been given 4 organisms (insect) and need to manually construct the max possible trees and then choose the most parsimonious and back this up by research. they are arthropods.

first How can i verify what are the number of possible trees, I have already drawn 12, but got feedback that that is not enough. I am using 10 characters.

I am wondering what species of insect this is?

Good afternoon,

I am carrying out a monthly invertebrate sampling for future molecular studies (DNA). I am euthanizing my arthropods with 70° ethanol right after the capture and then store them in a freezer. Would it be better for DNA preservation using 96° or pure ethanol?

Hi. I am working with arthropods (decapods, stomatopods, maxillopods...) using COI standard genetic marker for the identification. I am trying to assign my sequences to reference sequences from GenBank (via MIDORI). But what percent identity do I have to choose ? I don't find any resource mentioning it. Your kind response would be highly appreciated. Thanks Regards Lisa Loze

We try to develop a standardised sampling protocol to take samples of arthropods which occur on urban hedgerows? At the moment, it seems that beating (combined with a funnel?) is the best method. Do you know any standards for hedgesampling?

Studies in German are very welcome.

I work on ostracod species that belong to order crustacia and phylum Arthropoda but I dont have enough key for this ,please who can help me

Is there any method to collect arthropods other than pitfall traps, light traps & hand picking method ?

-Inaturalist

-Orthoptera Species File (OSF)

-Tettigoniidae (Orthoptera) species from Argentina and Uruguay

-The Catalogue of Life (COL)

-Global Biodiversity Information (GBIF)

-Berkeley Ecoinformatics Engine (Ecoengine)

-Encyclopedia of Life (EOL)

-Integrated Digitized Biocollections (IDigBio)

-NBNatlas

-System of Information on Brazilian Biodiversity (Sibbr)

-Ocean Biodiversity Information System (OBIS)

-VertNet

I need more suggestions please!

I wonder what are the best ways to make arthropod collections (Collembola, Euscorpius, Diplopoda, Insects....)? What are your experiences? Do you have your own collection? What are you collecting and why?

I'm looking for an easy and reliable way to highlight the veins of butterfly specimen from different families at a museum while taking pictures of them. Thus far, I've only found ways to do so on living organisms, but I'm pretty sure some kind of thermal filters won't help me here. Does anyone have any kind of experience when it comes to different kinds of lenses or something similar?

Editing the pictures afterwards in order to highlight the veins isn't really an option, since I'll be taking hundreds of pictures.

Thanks for your help

How long will it take for arthropod ingredients to appear on our menu?

Recently, Nestle has released food for dogs and cats, in which, in addition to the usual chicken, they added chopped fly larvae. And no, the global corporation does not save on cats. Livestock is one of the drivers of climate change, and replacing cows with insects can reduce its turnover. Some insect products have been on the market for a long time. Tell us who you can try and what sensations to expect?

I am looking for information on sublethal contact toxicity of thiamethoxam to soil arthropods with respect to female and male development. Any help would be appreciated!

Do you use functional traits?

I would like to use a categorical classification, any references to suggest?

Thanks

Noelline

Dear colegues,

What do you think about this? Can insects or others arthropods transmit the virus (directly or indirectly)?

I'm working on an aquatic insect that produces silk and I would like to know if every silk has a composition of fibroin (highest percentage) and sericin. Thank you!

Dear Everyone!

I am looking for papers detailing arthropod phoresy in the mid-Cretaceous Burmese amber.

Any help is greatly welcome!

Sincerely;

Márton

Antlions are one on soil arthropods in their early larvae stage, where they create a conical pit in the sand and wait for its prey to fall in it to devour it as a predator. So suggest the method use to count the population of these insects in the habitat.

If we want to study arthropod abundance and diversity on various managements/landscapes, we also record the temperature, RH, precipitation, or sometimes specifically, we measure soil properties, host plant's phytochemical components or landscape characteristics.

I read the book authored by Alain Zuur et al. (Mixed Effects Models and Extension in Ecology with R), but I could not understand the book well because of my inadequate knowledge of statistics. Because many studies used different approaches, I don't know when we should use PCA, CCA, GLM, or LME, or their variation.

If I record arthropod abundance and diversity on various landscapes (identified at least to family level), and I measure the physical environmental properties,

To date, I only use Pearson's correlation to determine the relationship between the observed variables with the environmental factors. But I know that the correlation analysis cannot give robust results or the analysis results could be overestimated. Even in my own experience, if there is no significant correlation, I'll just remove one of the variables/factors.

Thank you.

I am working on insect associated mites. The parasitism and predation of the mites on the insect is evident from the direct observation and rearing experiment. I encountered a problem in confirming the predatory/parasitic relationship of the mite on the insect in molecular level. Could you please suggest a molecular technique for analysing the predatory /parasitic relation of the mite on the insect host. If we are going for a gut content analysis of the mite, which kind of molecular tests will be more sensitive in analysing it?

For 4 years, I have collected arthropods from Djibouti. Now I need help to identify them.

Hi all,

I am currently looking into the prevalence and effects of arthropods as predators of vertebrate brood. To do so, I'm building a database consisting of observations of arthropods predating vertebrate young that are dependent on parental care, in terrestrial systems (think for example of nestlings in birds or young mammals).

So if you, during your field work or in your free time, have observed such a predation event (or know anyone who has), please share it with me with as much detail as possible!

Thanks in advance for your help

I am working on the phylogenetic analysis for communities of plants and arthropods.

A standardized protocol of building phylogenetic tree for plant species list that was widely used in studies. In brief, by reading a species list into R, using "plantlist" package in R to get one verified "Family/Genus/Species" list, and then reading the one into an online platform - phylomatic ( http://phylodiversity.net/phylomatic/ ) to get a .tre file.

However, I have no idea of building a phylogenetic tree for arthropod. Is there a sort of open online platform or software in producing one arthropod's phylogenetic tree? I had one athropod species list.

If no one, how abut effective way(s) of building the tree.

Thanks a lot.

Shimin Gu

Beside dung beetles, I would like to learn more about the diversity of arthropods in silvopasture systems where livestock are kept on rotation. Also what about arthropods diversity in similar systems in temperate zones? Thank you.

Dear all,

I performed an in vitro luminescence bioassay to determine the effect which an arthropod toxin has on the cell viability (CellTiter Glo) of mouse myoblasts and neuroblasts. After blank reduction, I prepared a calibration curve from the control data (Fig. 1). A statistical evaluation of my control data suggests that a polynomial regression of 2nd order fits best (based on highest R2 adjusted and lowest standard error).

The problem I am facing is that unexpectedly the toxins tested display HIGHER luminescence values than the positive control (direct correlation of cell survival and luminescence units). This leads to a negative root, when trying to resolve the polynom equation by pq-formula, and thus, I get no cell survival results for my toxins.

Do you have any suggestions how to solve this problem? Did I miss a "normalization step" of my dataset which could overcome this problem? Or is it possible that it has simply no solution because we are trying to extrapolate from an "interpolation" approach?

Fig. 1. Regression. Shows the data for my calibration curve, and the polynomial curve itself.

Fig. 2. Calculations. Shows how I calculated the cell survival % for my samples and also recalculated for the controls based on their induced luminescence signal.

Thank you for your time in advance!

Ethanol and propylene glycol are both used to preserve mites, and each have their drawbacks (i.e., evaporation and specimen distortion). Some people add a small amount of glycerol to vials of ethanol to prevent samples from drying out over time if containers prove less than perfectly airtight. Does anyone have experience with the long-term performance of ethanol/propylene glycol mixtures as preservatives for mites, and particularly for oribatids?

" Pitfall trapping is the standard method for collecting ground-dwelling arthropods and soil fauna in studies of ecological and agricultural entomology " _{( Ruiz-Lupión et al. 2019).}

In my current research assistant position I am working on analysis of macro-fauna in forests. We use pitfall traps to assess the abundance of macro-fauna in a given area. I'm curious to learn more about other methods used for this sort of analysis.

In a study reviewing pitfall traps, Ruiz-Lupión et al. (2019) states the factors which should be considered by ecologists using pitfall traps. They state, "the capture rate of arthropods in pitfall traps is proportional to their activity, and the number of individuals that each trap catches may or may not reflect their true abundance, and instead just their activity. Thus, the rate of capture is proportional to the joint effects of abundance and activity, something that has very often been overlooked by ecologists for a long time... [Nonetheless,] activity estimates from pitfall trap catches can still be biased because of multiple factors such as the surrounding habitat structure or the environmental conditions such as temperature and water availability. Additional factors could be the vertical distribution of the soil and leaf litter layers, as well as the attraction or repulsion of preservative fluids, detergents, or baits, the effects of which vary according to the taxon, sex, season, and environment. Specifically, if a trap retains excessive amounts of water, it could act as an attractor for the fauna, especially during drought periods, therefore biasing the estimates of activity. "

I will like to determine the level of various reactive oxygen species produced from ticks as part of an experiment. Considering the unstable nature of different ROS and their ability to dissociate within a short period, what is the best approach to get a good insight into how much ROS is been produced. Thanks

Hello,

I have a set of independent qualitative variables related to households (type of house, type of windows, presence of pets, ...), and dependent quantitative variables (number of arthropods collected in the households, species richness and diversity indexes).

Which statistical test would you recommend to understand which factors are affecting the most the arthropods population?

So far I came across Factor analysis of mixed data (FAMD) but these analyses are new for me so I would like to have opinions from people with more expertise than me, thanks a lot for your help.

In the current EFSA Guidance on the risk assessment of plant protection products on bees (Apis mellifera, Bombus spp. and solitary bees) related to the Regulation (EC) 1107/2009 valid test methods for bees are in place. Beside bees (honeybees) several other pollinator groups are affected by pesticides and biocides such as lepidopterans or beetles. In order to improve the risk assesment for pesticides and biocides it is important to have a whole overview of exisiting guidelines beside the European regulations, OECD framework or the US EPA regulatory.

Of this type of centipede (two centimeters long) there are many in my garden, located at 2,350 meters above sea level in the Andes of northern Peru (Chachapoyas, Amazonas department). Any idea to which family and genus it belong and if it’s dangerous for toddlers?

Dear colleagues,

I'm an applied enotmologist employed at the State Office for Health and Social Affairs Mecklenburg-Western Pomerania, N-Germany. One of the services we offer is to determine arthropods suspected to be pest species or parasites etc, collected by private persons or pest management professionals etc.

From time to time we receive Bethylidae too, in most cases people got stung before ...

The last speciemen were send a few days ago. It is a brown, wingless female, claws are simple without a basal hook, antenna 12-segmented. Regarding the keys available to me (Perkins 1976, Peeters et al. 2004, Azevedo et al. 2018, Sellenschlo 2019) it should be a Cepalonomia sp., probably C. gallicola? But the distal antennal segments aren't black – is this really a characteristic of C. gallicola? Unfortunately I'm not familiar with Bethylidae.

As far as I could find out C. gallicola is not recorded for Germany jet, so may my id is wrong.

So please have a look to the attached pictures, hopefully they are detailed enough to clarify the species. Please let me know if you should need other details/views ... if necessary I'll send the speciemen to one of you. (the cuticular surface was still a bit wet due to a storage in glycerine, before I've taken the pictures)

Thanks a lot for any comments or suggestions,

Kai

A few years back, when I still was at high school at Bangladesh (Mymensingh division, plains), I noticed (in a suburban locality where my house is) a nocturnal elongated insect (5-6 mm long by 2-3 mm wide) that often roam in groups of 10-20 insects and be attracted by light. they have limited flight capacity and can climb in painted masonry indoor walls. they have two elongated nearly transparent wings at their dorsal side, and segmentation in their ventral side is clearly distinguishable, which seemed to be filled with some sort of liquid. I can not describe their dorsal appendages, but when i crushed some of them plainly out of curiosity, they smelled strongly near-exactly like jasmine (Jasminum sambac ) or coral jasmine (Nyctanthes arbor-tristis) flower!

Is there any description on similar insects that have their body vessel filled with fragrant liquid?

Can taxonomy of the arthropod can be estimated from the given data?

What is the probable role of these fragrant compound in arthropod? (e.g. defense mechanism, immunity, courtship). I know methyl jasmonate is a phytohormone for plant-to-plant communication, and also a little bit about musk deer and ambergris whale

Colecté arañas en la Sierra Nevada de Santa Marta en dic-enero 1972-73, enero-marzo 1974 y marzo-mayo1975. Creo que tengo MUCHOS datos útiles, sobre todas las familias de arañas. Representan siete meses de trabajo de campo, colectando a mano y a veces con trampas, en 1) bosque semiárido de Ciénaga y del pie la la montaña (ca. Río Frío y cerca de Atanquez), 2) bosque subhúmido de montaña inferior, 3) bosque húmedo de montaña superior, 4) bosque de neblina (muy pocas colectas), 4) bosque sub-páramo, 6) páramo y 7) zona de piedras y nieve permanente. Los datos de colecta son bastante precisas. No tienen coordinadas, pero tienen altura sobre nivel del mar, y creo que con MUCHO trabajo voy a poder poner coordinadas exactas, y a la misma vez, corregir la asnm. Puedo indicar, con cierto grado de precisión, el límite inferior y superior (asnm) de cada especie de araña. Muchos de mis ejemplares fueron identificados por H.W.Levi, N.I.Platnick y otros expertos. Muchos de mis especímenes posiblemente se perdieron, aprox. 1984, por ahí, o si no se perdieron, probablemente están en el FSCA, Florida State Collection of Arthropods, Gainesville, Florida, USA. El punto es lo siguiente. Han pasado aprox. 45 años desde la época de mi estudio inédito - son 45 años de calentamiento global, y creo que si alguien puede repetir mi trabajo ahora, se podrá descubrir como el calentamiento global ha afectado la araneofauna de la Sierra Nevada de Santa Marta en los últimos 45 años.

The best type of bioassays choice and non choice for arthropods for indicate preference for plant varieties of same species. Four varieties and a phytophagous.

I need to perform barcoding on a subset of specimen from arthropod bulk samples. As I want to be able to detect endoparasitoids as well, I am considering freezing my samples instead of storing them in ethanol, to avoid contamination with non-target DNA from the bulk sample.

However, I read that freezing-thawing cycles may damage the DNA, and I will need to thaw and refreeze the samples once or twice to separate the target specimen from the bulk.

Hence I am wondering what could be the best compromise between limiting contamination and preventing excessive damage to the DNA.

Could filling up the samples with 99% ethanol shortly before freezing help?

Thank you in advance for your help!

There is a large number of groups of arthropods that do not work their biology, taxonomy or information is very incipient because they are very difficult to obtain research funds. However, we are losing part of the bidiversity and, like all animals, an ecological imbalance is being created, as we identify the extinction of some species of these groups

Hello Ali. I would appreciate if you could share the outline of the project on cover crops. ¿Are there publications from this project already?

I am currently working with arbovirus evolution in different environment conditions and in different hosts cells. I'm working with dengue virus and in order to study the different hosts I will be using an arthropod cell lineage and I want to use a human cell lineage that can be considered as a target or is commonly used in dengue in vitro infection. Ideas?

Does anyone know first-hand or know of a recorded observation as to what hemocyanin (the oxygen-binding molecule in the blood of most arthropods and mollusks) smells/tastes like? I know that hemocyanin is copper-based, but in some respects does not resemble copper visually (blue of green) due to the surrounding molecule. I know that vertebrate blood is often described as having a coppery taste despite being iron-based, so I was wondering what hemocyanin would taste like. Does it taste anything like the taste of crab, squid, or other hemocyanin-using organisms?

Intéressés par les recherches fondamentales ou appliquées sur les organismes entomophages (arthropodes prédateurs, insectes parasitoïdes, nématodes entomopathogènes, etc) ?

I have seen extensive use of road salts to melt ice during winter time especially in north. I am wondering what could be the effect of salt and other de-icing chemicals on arthropods living and/or overwintering near by roads.

The headline just appeared :

"ScienceDaily: Space & Time News

A break from the buzz: Bees go silent during total solar eclipse

Posted: 10 Oct 2018 07:55 AM PDT

In an unprecedented study of a solar eclipse's influence on bee behavior, researchers organized citizen scientists and elementary school classrooms to set up acoustic monitoring stations to listen in on bees' buzzing -- or lack thereof -- as the August 2017 total solar eclipse passed over North America. The results were clear and consistent at locations across the United States: Bees stopped flying during the period of total solar eclipse. "

This observation would seem to suggest that as global warming has progressed, and still does, then increasing days of cloud cover will reduce bee activity. Also that other pollinating insects may be involved and negatively impact on the human food chain. Not to mention arthropod food species predated by nesting birds. Intra-arthropod food chains may also likely be affected negatively.

These effects, if they occur, would seem most likely to be experienced during early growth seasons when cold and warm humid air masses will most frequently collide over areas of food production, and will have increased in the past 150 years and will continue to do so. Their effects upon human food supply will become immense as our global capacity to produce food drops below the global demand for it, and will proceed exponentially to a cube function due to the volumetric characteristic of increasing humidity.

Qu: Are there any bee studies which support the above proposition in relation to annual cloud cover variation bees, pollination, their population and related food yields?

The observation referred to in the headline was perhaps simplistic, in that it might lead some to imagine that it is the loss of radiation visible to the human eye which translates into suppressed appian activity, or that of other insects too. It is well established that the sense of sight, and capacity to navigate and find food, of different insects species involves a wider range of ranges of frequencies than humans rely upon. Since many parts of the emf spectrum may be selectively absorbed by atmospheric pollutant gases, vapours and aerosols the distribution of which are also likely to experience, though to us invisibly so, local variations just as does cloud cover then the true complexity and perhaps previously unsuspected breadth and depth of the negative potential of the real problem can be fully appreciated.

The consequence of this fact leads one to a generalisation of the proposal above to include all key species, species by species, and a generalisation of the question to include studies of all important pollinators.. flies, wasps and so on in relation to all possible human, and natural, atmospheric pollutants, constituents and chemically interacting derivative products.

Can someone help me with the scientific and common names of these arthropods.

Please identify this arthropod in the photo. Also comment on its habitat, venomous nature, etc.

It is known that CDC light traps are used for the capture of insects of medical importance, but it was observed that not only capture this group of insects, also other groups of non-target arthropods with positive phototaxis . Thus, it is important to know how to maximize the samples, and collaborate with specialists in other groups of arthropods.

I will be collecting water for microbiome and eDNA work and I am trying to figure out the best methods for cleaning/sterilizing my plastics.

Water will be collected using plastic turkey basters and filtered with a metal strainer into a plastic container ~2L capacity. For each sample, I will be using a different baster, strainer and container that will be brought to the field site sealed, but I need to be able to clean/sterilize these items in between sample visits.

With arthropod surface sterilization, I've used cleaning with bleach, sterile water and ethanol. A similar set up might work for the plastics, or maybe a combination of cleaning with each of the above and then placing under UV. If anyone has experience with this type of cleaning or any suggestions, I would greatly appreciate the input.

Hi, I am currently working in Bolivia and writing down a proposal with the same subject as yours, but focused on bats of agricultural interest within the inter-Andean valleys of Bolivia.

So far, I planned to assess species richness within the diet of insectivorous bats through meta-barcoding, because I could not come up with a straightforward method to measure abundance. How do you plan to do it? RT-PCR?

please, let's keep in touch! I hope we can collaborate at some point.

good luck with your project,

Alejandra Troncoso

I´m thinking to use potassium hydroxide to dissolve the muscles.

Dear David,

we are working in Cretaceous insects, and we are visited Mada several times for study the taphonomy of arthropods preserved into resins. We study fossil arthropods preserved in amber, and we are interested in the possibilitiy to found fossil insects in Mada, mainly from the Cretaceous. Thanks and all the best,

Xavier

I am planning to collect soil arthropod for my research studies. if any effective method other then tullgreen funnel are highly useful

Dear Colleagues,

I was wondering if someone who has had plenty of experience experimenting with pitfall traps as a method of collecting arthropods (especially spiders), could share his/her experiences regarding: 1) Does the material that the pitfall trap is made off, affect its ability to capture spiders? To be more precise is glass better than plastic or vice versa? and 2) Does the nature of the fluid used inside the pitfall trap, affect its ability to capture spiders? To be more precise, which of the different fluids used viz, supersaturated saline, alcohol, water, ethylene glycol, formalin, etc are more efficacious? P.S, I managed to locate one article detailing a comparison of the different fluids used in the pitfall traps but, I suppose actual experiences are sometimes more informative as compared to controlled studies. Thank you.

I am participating in a project on ‘rats, climate change, and public health’. The premise is that high rates of urbanization are leading to increases in human wastes, which leads to higher numbers of rats, which partly reflects our underwhelming abilities to control rat populations (see neophobia and rodenticide resistance). I believe there are potential ramifications for public health because higher densities of humans in metropolitan areas could be coming into contact with rat-vectored pathogens. These microbes may persist longer because climate change ostensibly leads to shorter cool seasons and longer warm seasons, which leads to wider distributions and increased longevity of the arthropods that transmit potential pathogens from rats to people and other wildlife.

If you were interested in better expressing the link between rats and climate change, what approaches would you use?

I want to compare arthropod assemblages (with presence-absence data) found in several plant species belonging to a same genus.

As the sampling effort was not the same in some plant species, the resulting dendrograms are very skewed to the number of localites sampled.

I would like to know if there is a method to weight my data in order to get a more realistic interpretation of the relationship between host plants.

Do you know any statistical method that allows this kind of analysis?

Thanks in advance.

I'm looking for springtails Folsomia candida. Do you know a place or institution where I could get few individuals enough for breeding in lab? I'm in Poland

I am searching for literature which help me to identify taxonomic and functional information of tropical macrofauna soil arthropods.

Hello everybody, i have been searching research gate for 2 days now to find literature about the food consumption of arthropods, beneficials and bees.

Especially for influenced organisms e.g. under an effect of a plant protection product (herbicides, pesticides and other products.

But i did not find much about that topic. It was included in 2 to 3 papers but i guess that this isnt all of that.

If anyone could give me an idea where to find literature for influenced eating behaviour of bees, beneficials and insects in general i would be totally happy.

Kind regards,

Marcel

Hello , 

I'd like to if there are others -new- biological control means of Schistorcea gregaria ,Locusta migratoria ?

Best regards 

I study host preference of herbivorous arthropods and the host-plant traits which may affect it. In particular, I work with greenhouse plants and sucking arthropod assemblages (spider mites, thrips, whiteflies, scale insects, and aphids). Psyllids, cycadas, planthoppers, and Heteroptera are absent in my work. I read the article about stylet penetration by Bemisia (see in the attachment), and it would be nice to compare such data with those about another suckers. Especially interesting is to know which areas of plant surface herbivores choose to pierce, how they get to the needed tissue, and based on what they make a choice to feed or leave out.

From the breeding period of spiders up to the full growth of the offsprings, do you have any idea what would be the approximate duration of the entire process? Specifically, those spiders belonging to the Araneidae family.

In the Great Belt (Danish waters) we found in a water depth around 40 m two male specimens of possibly Entoniscidae. Who is able to identify or can give some identification notes for this paratising isopod species? Or if Entoniscidae is wrong can give the correct family.

I am interested in the function of arthropod cocoons occurring in passerines breeding nests (sexual selection, signals, mate quality).

Hello!

Can anybody help me with the species identification of these two ticks please?

I think they are probably from migratory birds...

Mónica