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Oak fruit (acorn) / Fruit de chêne (gland) par Stéphane Thirion
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We spent a few days in Jasper National Park to see the Elk rut. We were last there for the rut 4 years ago and saw quite a few more Elk. But I was very happy with what we did see. We only saw 1 other bull in the forest. When we stopped by the roadside, security told us that he had a habit of ramming cars so, when he started walking toward us, we made a hasty retreat.
I read a very interesting article that states during the rut, the bull opens a slit near the eye to reveal a gland which secretes pheromones to attract a mate. I believe this photo shows that eye slit.
www.rmef.org/elk-network/why-do-bull-elk-grow-an-eye-crat...
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It's been very windy, dark and rainy here, but not really very cold. So I spent most of my time in the Hortus in the desert glass house looking at Euphorbias.
Here on Crown of Thorns is one of those all-pervasive wonderful Marmalade Hoverflies. It's not after pollen but lapping sweets directly from Flower's nectar glands.
#LookingCloseOnFriday! : A pair
PSP**** : two
Challenge sur Flickr : 098 : Nature / Macro
Bokeh performed through the foliage of the oak under which I placed a mirror
Le Chêne vert ou l’Yeuse est une espèce d'arbres à feuillage persistant de la famille des Fagacées, présent sous forme de bois clairs et garrigues. Il est parfois appelé Chêne faux houx en allusion à ses feuilles qui ressemblent à celles du houx.
Jai du attendre un moment avant qu'elle n'arrête de courir ! Elle s'est finalement stoppée quelques secondes, juste le temps de faire une série de clichés à assembler.
Vous l'auriez deviné, les larves se développent dans les glands.
© All rights reserved Arnaud Chatelet. Please do not use this image on websites, blogs or any other media without my explicit written permission.
Gland, Canton of Vaud, Switzerland
This long term exposure (300 sec.) has been taken at the very beginning of the sunrise. A pure moment of peacefulness on a very still lake with no wind.
In 1979 Abraham Hefetz, Henry M. Fales and Suzanna W.T. Batra in Science discussed the wonders of our Plasterer Bee - sometimes aptly called: Cellophane Bee - and her Dufour's Gland. The secretions from that gland are used to transparently coat the inner surface of solitary Colletes' burrow nest to make it not only waterproof and resistant. They also work as a fungicide and bacteriacide. The gland is named for Léon Jean Marie Dufour (1780-1865) who first described it. Colletes doesn't lay her eggs on the nest floor. There it might be too damp but she affixes them to the safe, 'plastic' walls.
No fear for damp on this hot and dry day as I walked my favorite circuit in the Meuse Corridor. I saw this Plasterer Bee gathering pollen on a preferred foraging ground, Common Tansy, Tanacetum vulgare.
Almost all birds, with a few exceptions, have these glands from which they spread oil over their feathers.
nov 2021 Saint Pargoire
“Un optimiste, c'est un homme qui plante deux glands et qui s'achète un hamac.”
sc1
The name Dik Dik comes from the sound that the females make when alarmed. These calls alert other animals to predators. This is the smallest antelope found in East and South Africa. They have a characteristic black spot in front of the eye which contains a gland – they rub the gland against grasses to mark territory. I consider these small antelopes among the prettiest animals I encountered.
île Chevrière, Sainte-Gemmes-sur-Loire,
Angers-Loire-Métropole, Maine-et-Loire, France
Glands de Chêne pédonculé - Quercus robur
Oak accorns - Quercus robur
Gland, Vaud Switzerland
This shot has been taken right after the sunrise. The long exposure made the clouds stretch in perspective and the lake a perfect mirror. It was a very pleasant and peaceful moment to be outside shooting. December reveals amazing light and weather conditions.
Gland, Canton of Vaud, Switzerland
Enjoying the last seconds of low light before the sun rise, on a very calm lake, while days are getting longer.
Gland, Canton of Vaud, Switzerland
Cloudy skies at sunrise are the best opportunities to see the lake as a giant mirror. I wish I arrived 10 min earlier to capture the low light... I will definitely go back to that place and find better light conditions.
Gland, Vaud, Switzerland
8.45 A.M. The sun just went out from behind the mountains. The sunlight is very intense and get diffused in the mist. I wanted the lake silky and try to capture this gorgeous light. The use of filters was justified. I decided to close the diaphragm at mid-range f/11 to allow a quite long exposure and keep enough of this magic light.
13TITA
photography side light
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Gland attaché à un fil transparent dans une boite noire,rayon lumineux très léger envoyer par la droite pour un effet lunaire.
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Gland attached to a transparent wire in a black box, light beam very light send by the right for a lunar effect.
Also curious about what that remarkable opening under the eye of a male red deer actually is? It intrigued me and I took a quick look at Wikipedia, and...
This is what is being described (difficult words, just look them up)
(Source Wikipedia)
The preorbital gland is a paired exocrine gland found in many species of hoofed animals, which is homologous to the lacrimal gland found in humans. These glands are trenchlike slits of dark blue to black, nearly bare skin extending from the medial canthus of each eye. They are lined by a combination of sebaceous and sudoriferous glands, and they produce secretions which contain pheromones and other semiochemical compounds.[1] Ungulates frequently deposit these secretions on twigs and grass as a means of communication with other animals.[2][3]
The preorbital gland serves different roles in different species. Pheromone-containing secretions from the preorbital gland may serve to establish an animal's dominance (especially in preparation for breeding),[4] mark its territory, or simply to produce a pleasurable sensation to the animal.[5] Because of its critical role in scent marking, the preorbital gland is usually considered as a type of scent gland. A further function of these glands may be to produce antimicrobial compounds to fight against skin pathogens. Antimicrobial compounds found in these glands may be biosynthesized by the animal itself, or by microorganisms that live in these glands.[6]
Ook zo benieuwd naar wat nu eigenlijk die merkwaardige opening onder het oog is bij een mannelijk edelhert ? Het intrigeerde me en was even te raden gegaan bij Wikipedia, en
dit is wat er beschreven wordt ( moeilijke woorden maar even opzoeken he )
(Bron Wikipedia)
De preorbitale klier is een gepaarde exocriene klier die bij veel soorten hoefdieren voorkomt en die homoloog is aan de traanklier die bij mensen wordt aangetroffen. Deze klieren zijn greppelachtige spleten van donkerblauwe tot zwarte, bijna kale huid die zich uitstrekken vanaf de mediale ooghoek van elk oog. Ze zijn bekleed met een combinatie van talg- en zweetklieren en produceren afscheidingen die feromonen en andere semiochemische verbindingen bevatten. Hoefdieren zetten deze afscheidingen vaak af op twijgen en gras als communicatiemiddel met andere dieren.
De preorbitale klier vervult verschillende rollen bij verschillende soorten. Feromoonhoudende afscheidingen uit de preorbitale klier kunnen dienen om de dominantie van een dier vast te stellen (vooral ter voorbereiding op het fokken), zijn territorium afbakenen, of eenvoudigweg een plezierig gevoel bij het dier teweegbrengen. Vanwege zijn cruciale rol bij geurmarkering wordt de preorbitale klier gewoonlijk beschouwd als een soort geurklier. Een andere functie van deze klieren kan zijn het produceren van antimicrobiële verbindingen om huidpathogenen te bestrijden. Antimicrobiële verbindingen die in deze klieren worden aangetroffen, kunnen door het dier zelf worden gebiosynthetiseerd, of door micro-organismen die in deze klieren leven.
D’une envergure de douze à quatorze centimètre, ce papillon, un véritable cerf-volant originaire de l’Asie du sud. Le grand planeur (Idea leuconoe) se rencontre également au nord de l’Australie. Idea leuconoe et sa larve se nourrissent de Parsonsia; ce qui fait que le papillon et sa larve sont toxiques.
Un des nombreux et magnifiques papillons à admirer dans une serre tropicale dédiée à Gland
Gland, Vaud, Switzerland
Watching the sun set is always something amazing. The Good thing with long exposures, you can fully enjoy the show with both eyes and simply appreciate it.
Gland, Vaud, Switzerland
The opposite French side of the lake was not visible that day. These weather conditions gave a feeling of an endless perspective that is usually reserved for the ocean.