Results 11 to 20 of about 171,348 (302)

Arthropod segmentation [PDF]

open access: yesDevelopment, 2019
ABSTRACT There is now compelling evidence that many arthropods pattern their segments using a clock-and-wavefront mechanism, analogous to that operating during vertebrate somitogenesis. In this Review, we discuss how the arthropod segmentation clock generates a repeating sequence of pair-rule gene expression, and how this is converted ...
Clark, Erik   +2 more
openaire   +3 more sources

Gene content evolution in the arthropods [PDF]

open access: yes, 2020
Arthropods comprise the largest and most diverse phylum on Earth and play vital roles in nearly every ecosystem. Their diversity stems in part from variations on a conserved body plan, resulting from and recorded in adaptive changes in the genome ...
Anstead, Clare A.   +78 more
core   +5 more sources

New stiletto flies from New Caledonia (Therevidae, Agapophytinae) [PDF]

open access: yesZooKeys, 2020
Stiletto-flies (Diptera: Therevidae) are highly diverse and species-rich in Australia and New Zealand, yet relatively few species have been recorded from neighbouring Papua New Guinea, Indonesia and throughout the remainder of Oceania.
Michael E. Irwin   +2 more
doaj   +3 more sources

Parasites and blood-meal hosts of the tsetse fly in Tanzania: a metagenomics study

open access: yesParasites & Vectors, 2022
Background Tsetse flies can transmit various Trypanosoma spp. that cause trypanosomiasis in humans, wild animals, and domestic animals. Amplicon deep sequencing of the 12S ribosomal RNA (rRNA) gene can be used to detect mammalian tsetse hosts, and the ...
Ju Yeong Kim   +4 more
doaj   +1 more source

Estimation of Sorting Time for Arthropod Samples Collected with Tullgren Funnels [PDF]

open access: yes, 2018
Arthropods were sorted from samples obtained with Tullgren funnels. Each sorter maintained a log of time per session and arthropods removed per session.
Bernard, Ernest C, Long, Pennie J
core   +2 more sources

Jewelled spider flies of North America: a revision and phylogeny of Eulonchus Gerstaecker (Diptera, Acroceridae)

open access: yesZooKeys, 2016
The spider fly genus Eulonchus Gerstaecker is found throughout the Nearctic Region. Six species are recognized and intraspecific morphological variation is documented in several species.
Christopher J. Borkent   +2 more
doaj   +3 more sources

Positive selection alone is sufficient for whole genome differentiation at the early stage of speciation process in the fall armyworm

open access: yesBMC Evolutionary Biology, 2020
Background The process of speciation involves differentiation of whole genome sequences between a pair of diverging taxa. In the absence of a geographic barrier and in the presence of gene flow, genomic differentiation may occur when the homogenizing ...
Kiwoong Nam   +5 more
doaj   +1 more source

Sticky Exudates on the Inflorescences of \u3ci\u3eCirsium Discolor\u3c/i\u3e (Asteraceae) and \u3ci\u3ePenstemon Digitalis\u3c/i\u3e (Scrophulariaceae) as Possible Defense Against Seed Predators [PDF]

open access: yes, 2018
From 1982 through 1987, I investigated whether sticky exudates released by Cirsium discolor and Penstemon digitalis in their inflorescences provide defense against seed predators. I tested two hypotheses: 1: Exudates directly deter seed predators, and 2:
Thomas, Patricia A
core   +2 more sources

Predatory Insects and Spiders From Suburban Lawns in Lexington, Kentucky [PDF]

open access: yes, 2017
Predatory arthropods were caught in pitfall traps in suburban lawns in Lexington, Kentucky. The relative abundance of species of Lycosidae, Carabidae, and Staphylinidae was compared in Kentucky bluegrass and tall fescue turf.
Cockfield, Stephen D, Potter, Daniel A
core   +3 more sources

Macrophage migration inhibitory factor (MIF) family in arthropods : Cloning and expression analysis of two MIF and one D-dopachrome tautomerase (DDT) homologues in Mud crabs, Scylla paramamosain [PDF]

open access: yes, 2016
Acknowledgements This research was supported by grants from the National Natural Science Foundation of China (Nos. 31172438 and U1205123), the Natural Science Foundation of Fujian Province (No.
Duan, Li-Peng   +7 more
core   +1 more source

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