Which web to invade? Argyrodine kleptoparasites differentiate amongst architecturally different host webs [PDF]
Biodiversity Data JournalKleptoparasitism, the theft of resources from another organism, is a widespread foraging strategy amongst animals. Many Argyrodinae cobweb spiders (Theridiidae) are obligatory kleptoparasites that have abandoned web building, relying instead on webs of ...
Ingi Agnarsson +10 more
exaly +5 more sources
Thieves and freeloaders: Argyrodine kleptoparasites invading cobwebs (Theridiidae) in the arid south-western USA [PDF]
Biodiversity Data JournalObligate argyrodine kleptoparasites (Theridiidae, Araneae) exploit heterospecific spider webs for food and shelter. Argyrodine spiders are a model lineage for the study of kleptoparasitism and related strategies, yet data on the behaviour of the majority
Jillian Cowles, Ingi Agnarsson
exaly +5 more sources
Spiders as superhosts and secondary kleptoparasites
Frontiers in Arachnid ScienceKleptoparasitism, broadly defined, is the theft of extrinsic resources resulting in potential cost to the host. The stealing of resources, often food gathered by another, is perhaps best known in birds and mammals, but is even more common and widespread ...
Ingi Agnarsson, Agnarsson Ingi
exaly +4 more sources
Life History of Oxybelus variegatus Wesmael, 1852 (Hymenoptera: Crabronidae) with a Description of the Mature Larva [PDF]
Insects, 2021 The first comprehensive information on the bionomics of the digger wasp Oxybelus variegatus Wesmael, 1852 is presented. Females nested in small aggregations in crevices between paving stones of a frequently used pedestrian pathway in lowland agricultural
Piotr Olszewski +2 more
doaj +2 more sources
Nesting biology and phylogenetic relationships of the parasitoid-hunting wasp Lindenius pygmaeus armatus (Vander Linden, 1829) (Hymenoptera: Crabronidae) [PDF]
Scientific Reports, 2023 Nests of Lindenius pygmaeus armatus were examined in northern Poland in Kowalewo Pomorskie and Sierakowo. Adults were encountered from late May to late July. The nests were built in sandy areas and wasteland.
Piotr Olszewski +4 more
doaj +2 more sources
Life History of Passaloecus pictus Ribaut, 1952 (Hymenoptera, Pemphredonidae) [PDF]
InsectsThe nesting of Passaloecus pictus Ribaut, 1952 was observed in Kowalewo Pomorskie (northern Poland). The nests were built in trap nests that were placed on a windowsill facing southwest. The females used resin from Picea pungens Engelm., located 5 m away,
Piotr Olszewski +1 more
doaj +2 more sources
Predators or Herbivores: Cockroaches of Manipulatoridae Revisited with a New Genus from Cretaceous Myanmar Amber (Dictyoptera: Blattaria: Corydioidea) [PDF]
Insects, 2022 Manipulator modificaputis Vršanský and Bechly, 2015 (Manipulatoridae, Corydioidea) is a purported predatory cockroach from Cretaceous Myanmar amber, based on a single male.
Xinran Li, Diying Huang
doaj +2 more sources
Foraging Observations: Novel Trophic Interactions Between the Andean Gull (<i>Chroicocephalus serrranus</i>) and Endangered Vertebrates of Lake Titicaca. [PDF]
Ecol EvolWe show that the Andean gull predates on both the Titicaca Grebe and the Titicaca Giant Frog. Both these species are critically endangered, and it was unknown that they had natural predators before this. ABSTRACT We record two new predation events and one new kleptoparasitic Andean Gull (Chroicocephalus serranus) behavior, interactions that directly ...
Quispe J +4 more
europepmc +2 more sources
Evolution of Peripheral Visual System in the Apoidea: A Role for Food Item Mobility? [PDF]
Ecol EvolSince larger compound eyes and ocelli altogether improve vision, one may expect that insects specialised in chasing very mobile resources possess such morphological optimisation. By analysing 77 species of bees and wasps, we have found that wasps had larger eyes, but not larger ocelli, than bees.
Trisoglio CF +4 more
europepmc +2 more sources
A continuous ideal free distribution approach to the dynamics of selfish, cooperative and kleptoparasitic populations [PDF]
Royal Society Open Science, 2016 Population distributions depend upon the aggregate behavioural responses of individuals to a range of environmental factors. We extend a model of ideally motivated populations to describe the local and regional consequences of interactions between three ...
Ilona Reding +3 more
doaj +2 more sources