Results 31 to 40 of about 10,897 (287)

Early events in the evolution of spider silk genes. [PDF]

open access: yesPLoS ONE, 2012
Silk spinning is essential to spider ecology and has had a key role in the expansive diversification of spiders. Silk is composed primarily of proteins called spidroins, which are encoded by a multi-gene family. Spidroins have been studied extensively in
James Starrett   +4 more
doaj   +1 more source

Study Replication: Shape Discrimination in a Conditioning Procedure on the Jumping Spider Phidippus regius

open access: yesAnimals, 2023
Spiders possess a unique visual system, split into eight different eyes and divided into two fully independent visual pathways. This peculiar organization begs the question of how visual information is processed, and whether the classically recognized ...
Eleonora Mannino   +3 more
doaj   +1 more source

ROLE OF INSECT GROWTH REGULATORS (IGRs) FOR COTTON LEAFWORM; Spodoptera Littoralis BOISD. AND CONSERVING TO SOME PREDATORS IN SUGAR BEET FIELDS [PDF]

open access: yesJournal of Plant Protection and Pathology, 2014
            The cotton leafworm, Spodoptera littoralis Boisd. is considered the most dangerous insect pest which threat the early sugar beet plantations. Because the conventional insecticides lead to much hazards to natural enemies, it has been important
Amira Ibrahim
doaj   +1 more source

Trait-Based Variation in the Foraging Performance of Individuals

open access: yesFrontiers in Ecology and Evolution, 2021
Although average, species-level interaction strength plays a key role in driving population dynamics and community structure, predator-prey interactions occur among individuals.
John P. DeLong   +2 more
doaj   +1 more source

Evidence for air movement signals in the agonistic behaviour of a nocturnal arachnid (order Amblypygi). [PDF]

open access: yesPLoS ONE, 2011
Many arthropods possess filiform hair sensilla (termed trichobothria in arachnids), which are extremely sensitive detectors of medium particle displacement.
Roger D Santer, Eileen A Hebets
doaj   +1 more source

Impact of Different Pesticides on Spider Species of Four Families [PDF]

open access: yesAcarines: Journal of the Egyptian Society of Acarology, 2011
Fifteen species in 12 genera belong to four families were collected from tomato fields in El-Fayoum governorate in 2006 and 2007 (July-Nov.). Collecting spiders started two weeks after the first acaricidal application and continued for ten weeks.
M. Mahammad, A. Rahil, M. Mohamed
doaj   +1 more source

A chelicerate Wnt gene expression atlas: novel insights into the complexity of arthropod Wnt-patterning

open access: yesEvoDevo, 2021
The Wnt genes represent a large family of secreted glycoprotein ligands that date back to early animal evolution. Multiple duplication events generated a set of 13 Wnt families of which 12 are preserved in protostomes.
Ralf Janssen   +2 more
doaj   +1 more source

STUDIES ON THE EGYPT IAN ALFALFA WEEVIL, Hypera btunneipetmis (BOHEMAN) AND CERTAIN ASSOCIATED PREDATORS IN EGYPT (KAFR EL·SHEIKH) AND L,IBYA (SEBHA) [PDF]

open access: yesJournal of Plant Protection and Pathology, 2003
This study was conducted at the farm of the Faculty of Agriculture, Sebha (Libya) and the experimental farm of sakha, Research Statio , Kafr Ef·Sheikh (Egypt) during 199811999 and 1999/2000 seasons, respectively.
G. EI-Mezayyen,
doaj   +1 more source

Occurrence and seasonal abundance of mite species, thrips, and spiders associated with garlic crop at Qalubia and Beni-Suef governorates, Egypt [PDF]

open access: yesAcarines: Journal of the Egyptian Society of Acarology
This work deals with the occurrence and seasonal abundance of mite species, thrips and spiders associated with garlic crop at Qalubia and Beni-Suef governorates, Egypt during the 2023–2024 season.
Asmaa Abd El-khalik   +2 more
doaj   +1 more source

Variation in the Elastic Modulus and Increased Energy Dissipation Induced by Cyclic Straining of Argiope bruennichi Major Ampullate Gland Silk

open access: yesBiomimetics, 2023
The trends exhibited by the parameters that describe the mechanical behaviour of major ampullate gland silk fibers spun by Argiope bruennichi spiders is explored by performing a series of loading-unloading tests at increasing values of strain, and by the
Ping Jiang   +8 more
doaj   +1 more source

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