Wild Bees – Children of the Sun 1/2

Most people associate honey producing insects with the name “BEE”.

nautilusfilm GmbH, Duration 50 minutes, Format HD 1080, 25p, 16:9, Partner BR, ARTE, WDR, ORF, Year 2017.

Few realize that there are over 560 different species of bees – most of them live their lives „busy as a bee“ but some „abuse“ other insects and others are even known to be murderers.

The film “Children of the sun – Wild Bees” shows the incredible diversity and the stunning adaptations of our “BEES” to various habitats and diverse living conditions. Fascinating fights, sensational performances, imposing structures and colorful individuals – the world of Wild Bees offers all of this and more.

Nuostabus filmas, yra ir apie gegužvabalius (Meloe) parazituojančius bites.

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Ar kamanės žaidžia?

Hiruni Samadi Galpayage Dona, Cwyn Solvi, Amelia Kowalewska, Kaarle Mäkelä, HaDi MaBouDi, Lars Chittka, Do bumble bees play?, Animal Behaviour, 2022, ISSN 0003-3472, https://doi.org/10.1016/j.anbehav.2022.08.013.
(https://www.sciencedirect.com/science/article/pii/S0003347222002366)
Abstract: A variety of animals have been found to interact with and manipulate inanimate objects ‘just for fun’, that is, to play. Most clear examples of object play come from mammals and birds. However, whether insects interact with inanimate objects as a form of play has never been systematically examined. Here, we show that rolling of wooden balls by bumble bees, Bombus terrestris, fulfils behavioural criteria for animal play and is akin to play in other animals. We found that ball rolling (1) did not contribute to immediate survival strategies, (2) was intrinsically rewarding, (3) differed from functional behaviour in form, (4) was repeated but not stereotyped, and (5) was initiated under stress-free conditions. Through the design of the experiment and with the support of behavioural observations, we excluded the possibilities that ball rolling was driven by exploration for food, clutter clearing or mating. Similar to vertebrate play, we also found age and sex differences for ball rolling by bumble bees: younger bees rolled more balls than older bees and male bees rolled individual balls for longer durations than females. We explicitly show that ball rolling is itself a rewarding activity. After being trained to find freely movable balls in one of two differently coloured chambers, bees showed a preference for the colour of the chamber where they had rolled balls. Our results contribute to the question of sentience in insects and lend further support for the existence of positive affective states in these animals.
Keywords: age difference; Bombus terrestris; cognition; conditioned place preference; invertebrate; object manipulation; play behaviour; sex difference

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Auksavapsvė

Seniai norėjau ir šiemet pavyko nufotografuoti auksavapsvę. Įdomu, ar sparnus valosi, ar kokį signalą raudonu pilveliu rodo:

Turbūt čia Chrysis angustula. Auksavapsvių kūnas šarvuotas, saugo nuo pavienių vapsvų ir bičių, kurias parazituoja, geluonių. Pačios auksavapsvės geluonies neturi, jis virtęs pailgėjusiu kiaušdėčiu. Kiaušinėlius deda į šeimininkės urvelį, kur auksavapsvės lerva suryja šeimininkės kiaušinius, lervas (parazitoidas), maisto atsargas (kleptoparazitas).
Chrysis angustula parazituoja daugiausia Symmorphus bifasciatus, bet ir kitas Symmorphus, Ancistrocerus trifasciatus pavienes vapsvas (https://www.biodiversity.no/Pages/200984/). Jeigu šeimininkės lizde užtenka maisto, ši auksavapsvė gali būti kleptoparazitu ir nesuėsti šeimininkės palikuonių.

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