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"Life History Studies of Some Florida Aphids" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3492162

"Life History Studies of Some Florida Aphids" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3492162

"Life History Studies of Some Florida Aphids" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3492162

"Life History Studies of Some Florida Aphids" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3492162

"Issued January 1957."

This article is from ZooKeys . Abstract AbstractThe family Rasnitsynaphididaefam. n. has a unique combination of characters: 9-segmented antennae; rhinaria arranged in many transverse rows, surrounding the antennal segments; segment IX narrower than other segments of flagellum, always without rhinaria; cubitus branches separated; ovipositor present; siphuncular pores absent. The new family comprises the genus Rasnitsynaphisgen. n. with three species, Rasnitsynaphis ennearticulatasp. n., Rasnitsynaphis coniunctasp. n., and Rasnitsynaphis quadratasp. n., all from the Lower Cretaceous of Transbaikalia.

YP-056 -------------- Hell Garbage Aphids EP Recorded December 7th - 8th 2012 on my cell phone as I was getting out of work. Then I went home and recorded some more. I drew the cover while still at work. Sometimes that's how Hell Garbage albums are born! Hell Garbage was/is/shall be Dylan H. Additional vocals on track 3 by Katter. Thanks and hello to: Yip! Records; Kondoll Frodoy; John Kajagoogoo; Ed Sluggisha; Eric/ICSSH; Fuck Ramone; Frank Goshit; Dan-Charge; Noel Thomas; Mike Sludgesicle; Vicente/Bucket of Piss; Peter/Gefilte Fist; Keith Michael Edward O'Brien; R.T. McIntyre; BCA/The Earwigs; Joao Felipe; Sean Lambert. YES, I KNOW THIS IS ACTUALLY 54 MINUTES LONG, THEREFORE MAKING IT AN LP AND NOT AN EP! I THOUGHT IT WAS GOING TO BE AN EP WHEN I FIRST DREW UP THE COVER. THEN I GOT CARRIED AWAY WITH RECORDING. I AM A FAT GAY NIGGER AND I LIKE EXPIRED OREO COOKIES AND ORANGE PEELS.

Excerpt from Video Games Hot Dog #253

Excerpt from Video Games Hot Dog #253

Excerpt from Video Games Hot Dog #253

Excerpt from Video Games Hot Dog #253

Excerpt from Video Games Hot Dog #253

"Spermatogenesis of Aphids; The Fate of the Smaller Secondary Spermatocyte" is an article from Biological Bulletin, Volume 40 . View more articles from Biological Bulletin . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-1536499

"Spermatogenesis of Aphids; The Fate of the Smaller Secondary Spermatocyte" is an article from Biological Bulletin, Volume 40 . View more articles from Biological Bulletin . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-1536499

"A Host Plant List of Aphids in the Vicinity of the University of Florida" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3491957

"A Host Plant List of Aphids in the Vicinity of the University of Florida" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3491957

"A Host Plant List of Aphids in the Vicinity of the University of Florida" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3491957

"A Host Plant List of Aphids in the Vicinity of the University of Florida" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3491957

"A Host Plant List of Aphids in the Vicinity of the University of Florida" is an article from The Florida Entomologist, Volume 5 . View more articles from The Florida Entomologist . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-3491957

The Dude & Scotty Are Hanging Out And Answering Your Grow Talk Questions such as Can Root Aphids Cause Twisted Leaves, When To Get Rid of the Plant, How To Get Rid Of Root Aphids In The Garden For Good And Keep Them From Coming Back In The Garden With A Full IPM Regiment Designed To Get Rid Of Root Aphids & More On Todays Grow Talk Clip Join the the Dude Grows Community! https://www.dudegrows.com/support We continue to bring the DGC quality cannabis grow knowledge, cannabis news, culture, and good laughs! Your support allows us to produce daily shows and keeps the team going. Soon to be our 8th year going strong! This wouldn't be possible without all the DGC support. THANKS! Click here for a link to our Patreon to show your support! https://www.patreon.com/Dudegrowsshow Don't forget to checkout the gear that we trust! AC Infinity Fans & Tents on Amazon: shorturl.at/btJQ1 Coupon Code 'dudegrows15' Check out our other videos! More "Grow Talk" episodes : https://bit.ly/3q21uNr "Wake and Bake America" : https://bit.ly/3n9az58 "Know Your Breeder" Series : https://bit.ly/3t8TV9U #THEDUDEGROWS #GROWTALK #INDOORGROW Source: https://www.youtube.com/watch?v=lGDyYnHctag Uploader: TheDudegrows

The Dude & Scotty Are Hanging Out And Answering Your Grow Talk Questions such as Can Root Aphids Cause Twisted Leaves, When To Get Rid of the Plant, How To Get Rid Of Root Aphids In The Garden For Good And Keep Them From Coming Back In The Garden With A Full IPM Regiment Designed To Get Rid Of Root Aphids & More On Todays Grow Talk Clip Join the the Dude Grows Community! https://www.dudegrows.com/support We continue to bring the DGC quality cannabis grow knowledge, cannabis news, culture, and good laughs! Your support allows us to produce daily shows and keeps the team going. Soon to be our 8th year going strong! This wouldn't be possible without all the DGC support. THANKS! Click here for a link to our Patreon to show your support! https://www.patreon.com/Dudegrowsshow Don't forget to checkout the gear that we trust! AC Infinity Fans & Tents on Amazon: shorturl.at/btJQ1 Coupon Code 'dudegrows15' Check out our other videos! More "Grow Talk" episodes : https://bit.ly/3q21uNr "Wake and Bake America" : https://bit.ly/3n9az58 "Know Your Breeder" Series : https://bit.ly/3t8TV9U #THEDUDEGROWS #GROWTALK #INDOORGROW Source: https://www.youtube.com/watch?v=lGDyYnHctag Uploader: TheDudegrows

The Dude & Scotty Are Hanging Out And Answering Your Grow Talk Questions such as Can Root Aphids Cause Twisted Leaves, When To Get Rid of the Plant, How To Get Rid Of Root Aphids In The Garden For Good And Keep Them From Coming Back In The Garden With A Full IPM Regiment Designed To Get Rid Of Root Aphids & More On Todays Grow Talk Clip Join the the Dude Grows Community! https://www.dudegrows.com/support We continue to bring the DGC quality cannabis grow knowledge, cannabis news, culture, and good laughs! Your support allows us to produce daily shows and keeps the team going. Soon to be our 8th year going strong! This wouldn't be possible without all the DGC support. THANKS! Click here for a link to our Patreon to show your support! https://www.patreon.com/Dudegrowsshow Don't forget to checkout the gear that we trust! AC Infinity Fans & Tents on Amazon: shorturl.at/btJQ1 Coupon Code 'dudegrows15' Check out our other videos! More "Grow Talk" episodes : https://bit.ly/3q21uNr "Wake and Bake America" : https://bit.ly/3n9az58 "Know Your Breeder" Series : https://bit.ly/3t8TV9U #THEDUDEGROWS #GROWTALK #INDOORGROW Source: https://www.youtube.com/watch?v=lGDyYnHctag Uploader: TheDudegrows

18 pages : 23 cm

18 pages : 23 cm

18 pages : 23 cm

This article is from PLoS ONE , volume 9 . Abstract : Aphids constitute a diverse group of plant-feeding insects and are among the most important crop pests in temperate regions. Their morphological identification is time-consuming and requires specific knowledge, training and skills that may take years to acquire. We assessed the advantages and limits of DNA barcoding with the standard COI barcode fragment for the identification of European aphids. We constructed a large reference dataset of barcodes from 1020 specimens belonging to 274 species and 87 genera sampled throughout Europe and set up a database-driven website allowing species identification from query sequences. Results: In this unbiased sampling of the taxonomic diversity of European aphids, intraspecific divergence ranged from 0.0% to 3.9%, with a mean value of 0.29%, whereas mean congeneric divergence was 6.4%, ranging from 0.0% to 15%. Neighbor-joining analysis generated a tree in which most species clustered in distinct genetic units. Most of the species with undifferentiated or overlapping barcodes belonged to the genus Aphis or, to a lesser extent, the genera Brachycaudus, Dysaphis and Macrosiphum. The taxa involved were always morphologically similar or closely related and belonged to species groups known to present taxonomic difficulties. Conclusions: These data confirm that COI barcoding is a useful identification tool for aphids. Barcode identification is straightforward and reliable for 80% of species, including some difficult to distinguish on the basis of morphological characters alone. Unsurprisingly, barcodes often failed to distinguish between species from groups for which classical taxonomy has also reached its limits, leading to endless revisions and discussions about species and subspecies definitions. In such cases, the development of an effective procedure for the accurate identification of aphid specimens continues to pose a difficult challenge.

This article is from PLoS ONE , volume 9 . Abstract : Aphids constitute a diverse group of plant-feeding insects and are among the most important crop pests in temperate regions. Their morphological identification is time-consuming and requires specific knowledge, training and skills that may take years to acquire. We assessed the advantages and limits of DNA barcoding with the standard COI barcode fragment for the identification of European aphids. We constructed a large reference dataset of barcodes from 1020 specimens belonging to 274 species and 87 genera sampled throughout Europe and set up a database-driven website allowing species identification from query sequences. Results: In this unbiased sampling of the taxonomic diversity of European aphids, intraspecific divergence ranged from 0.0% to 3.9%, with a mean value of 0.29%, whereas mean congeneric divergence was 6.4%, ranging from 0.0% to 15%. Neighbor-joining analysis generated a tree in which most species clustered in distinct genetic units. Most of the species with undifferentiated or overlapping barcodes belonged to the genus Aphis or, to a lesser extent, the genera Brachycaudus, Dysaphis and Macrosiphum. The taxa involved were always morphologically similar or closely related and belonged to species groups known to present taxonomic difficulties. Conclusions: These data confirm that COI barcoding is a useful identification tool for aphids. Barcode identification is straightforward and reliable for 80% of species, including some difficult to distinguish on the basis of morphological characters alone. Unsurprisingly, barcodes often failed to distinguish between species from groups for which classical taxonomy has also reached its limits, leading to endless revisions and discussions about species and subspecies definitions. In such cases, the development of an effective procedure for the accurate identification of aphid specimens continues to pose a difficult challenge.

This article is from PLoS ONE , volume 9 . Abstract : Aphids constitute a diverse group of plant-feeding insects and are among the most important crop pests in temperate regions. Their morphological identification is time-consuming and requires specific knowledge, training and skills that may take years to acquire. We assessed the advantages and limits of DNA barcoding with the standard COI barcode fragment for the identification of European aphids. We constructed a large reference dataset of barcodes from 1020 specimens belonging to 274 species and 87 genera sampled throughout Europe and set up a database-driven website allowing species identification from query sequences. Results: In this unbiased sampling of the taxonomic diversity of European aphids, intraspecific divergence ranged from 0.0% to 3.9%, with a mean value of 0.29%, whereas mean congeneric divergence was 6.4%, ranging from 0.0% to 15%. Neighbor-joining analysis generated a tree in which most species clustered in distinct genetic units. Most of the species with undifferentiated or overlapping barcodes belonged to the genus Aphis or, to a lesser extent, the genera Brachycaudus, Dysaphis and Macrosiphum. The taxa involved were always morphologically similar or closely related and belonged to species groups known to present taxonomic difficulties. Conclusions: These data confirm that COI barcoding is a useful identification tool for aphids. Barcode identification is straightforward and reliable for 80% of species, including some difficult to distinguish on the basis of morphological characters alone. Unsurprisingly, barcodes often failed to distinguish between species from groups for which classical taxonomy has also reached its limits, leading to endless revisions and discussions about species and subspecies definitions. In such cases, the development of an effective procedure for the accurate identification of aphid specimens continues to pose a difficult challenge.

This article is from PLoS ONE , volume 9 . Abstract : Aphids constitute a diverse group of plant-feeding insects and are among the most important crop pests in temperate regions. Their morphological identification is time-consuming and requires specific knowledge, training and skills that may take years to acquire. We assessed the advantages and limits of DNA barcoding with the standard COI barcode fragment for the identification of European aphids. We constructed a large reference dataset of barcodes from 1020 specimens belonging to 274 species and 87 genera sampled throughout Europe and set up a database-driven website allowing species identification from query sequences. Results: In this unbiased sampling of the taxonomic diversity of European aphids, intraspecific divergence ranged from 0.0% to 3.9%, with a mean value of 0.29%, whereas mean congeneric divergence was 6.4%, ranging from 0.0% to 15%. Neighbor-joining analysis generated a tree in which most species clustered in distinct genetic units. Most of the species with undifferentiated or overlapping barcodes belonged to the genus Aphis or, to a lesser extent, the genera Brachycaudus, Dysaphis and Macrosiphum. The taxa involved were always morphologically similar or closely related and belonged to species groups known to present taxonomic difficulties. Conclusions: These data confirm that COI barcoding is a useful identification tool for aphids. Barcode identification is straightforward and reliable for 80% of species, including some difficult to distinguish on the basis of morphological characters alone. Unsurprisingly, barcodes often failed to distinguish between species from groups for which classical taxonomy has also reached its limits, leading to endless revisions and discussions about species and subspecies definitions. In such cases, the development of an effective procedure for the accurate identification of aphid specimens continues to pose a difficult challenge.

16 pages 24 cm

Bibliography: p. 4

Bibliography: p. 4

Completed Fall 2009 at the U of I.

Completed Fall 2009 at the U of I.

Completed Fall 2009 at the U of I.

Completed Fall 2009 at the U of I.

COO CR

COO CR

This article is from PLoS ONE , volume 8 . Abstract From bird flocks to fish schools and ungulate herds to insect swarms, social biological aggregations are found across the natural world. An ongoing challenge in the mathematical modeling of aggregations is to strengthen the connection between models and biological data by quantifying the rules that individuals follow. We model aggregation of the pea aphid, Acyrthosiphon pisum. Specifically, we conduct experiments to track the motion of aphids walking in a featureless circular arena in order to deduce individual-level rules. We observe that each aphid transitions stochastically between a moving and a stationary state. Moving aphids follow a correlated random walk. The probabilities of motion state transitions, as well as the random walk parameters, depend strongly on distance to an aphid's nearest neighbor. For large nearest neighbor distances, when an aphid is essentially isolated, its motion is ballistic with aphids moving faster, turning less, and being less likely to stop. In contrast, for short nearest neighbor distances, aphids move more slowly, turn more, and are more likely to become stationary; this behavior constitutes an aggregation mechanism. From the experimental data, we estimate the state transition probabilities and correlated random walk parameters as a function of nearest neighbor distance. With the individual-level model established, we assess whether it reproduces the macroscopic patterns of movement at the group level. To do so, we consider three distributions, namely distance to nearest neighbor, angle to nearest neighbor, and percentage of population moving at any given time. For each of these three distributions, we compare our experimental data to the output of numerical simulations of our nearest neighbor model, and of a control model in which aphids do not interact socially. Our stochastic, social nearest neighbor model reproduces salient features of the experimental data that are not captured by the control.

This volume was digitized and made accessible online due to deterioration of the original print copy.

This volume was digitized and made accessible online due to deterioration of the original print copy.

This volume was digitized and made accessible online due to deterioration of the original print copy.

This volume was digitized and made accessible online due to deterioration of the original print copy.

18 pages : 23 cm

18 pages : 23 cm

This article is from BMC Evolutionary Biology , volume 12 . Abstract Background: The sequencing of the genome of the pea aphid Acyrthosiphon pisum revealed an unusual expansion of the miRNA machinery, with two argonaute-1, two dicer-1 and four pasha gene copies. In this report, we have undertaken a deeper evolutionary analysis of the phylogenetic timing of these gene duplications and of the associated selective pressures by sequencing the two copies of ago-1 and dcr-1 in different aphid species of the subfamily Aphidinae. We have also carried out an analysis of the expression of both copies of ago-1 and dcr-1 by semi-quantitative PCR in different morphs of the pea aphid life cycle. Results: The analysis has shown that the duplication of ago-1 occurred in an ancestor of the subfamily Aphidinae while the duplication of dcr-1 appears to be more recent. Besides, it has confirmed a pattern of one conserved copy and one accelerated copy for both genes, and has revealed the action of positive selection on several regions of the fast-evolving ago-1b. On the other hand, the semi-quantitative PCR experiments have revealed a differential expression of these genes between the morphs of the parthenogenetic and the sexual phases of Acyrthosiphon pisum. Conclusions: The discovery of these gene duplications in the miRNA machinery of aphids opens new perspectives of research about the regulation of gene expression in these insects. Accelerated evolution, positive selection and differential expression affecting some of the copies of these genes suggests the possibility of a neofunctionalization of these duplicates, which might play a role in the display of the striking phenotypic plasticity of aphids.

Am Mühlenbach in Linn (Krefeld) weitere Fotos: http://fotos.goehde.com Musik: freakified - Sacrifice | CC-BY 3.0

Am Mühlenbach in Linn (Krefeld) weitere Fotos: http://fotos.goehde.com Musik: freakified - Sacrifice | CC-BY 3.0

Am Mühlenbach in Linn (Krefeld) weitere Fotos: http://fotos.goehde.com Musik: freakified - Sacrifice | CC-BY 3.0

Am Mühlenbach in Linn (Krefeld) weitere Fotos: http://fotos.goehde.com Musik: freakified - Sacrifice | CC-BY 3.0