Biosphoto : Agence Photographique spécialisée dans la Nature et l'Environnement

Eurasian red Squirrel (Sciurus vulgaris) with a nut, Normandy, FranceEurasian red Squirrel (Sciurus vulgaris) with a nut, Normandy, France© François Mordel / BiosphotoJPG - RM

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Eurasian red Squirrel (Sciurus vulgaris) with a nut, Normandy,

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Red squirrel (Sciurus vulgaris) on the nut stock, Normandy, FranceRed squirrel (Sciurus vulgaris) on the nut stock, Normandy, France© François Mordel / BiosphotoJPG - RM

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Red squirrel (Sciurus vulgaris) on the nut stock, Normandy, France

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Red squirrel with a nutRed squirrel with a nut© Fabrice Cahez / BiosphotoJPG - RMUse for the promotion of hunting prohibited

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Red squirrel with a nut

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Squirrel (Sciurus vulgaris), foraging, walnut, in autumn, Saxony, Germany, EuropeSquirrel (Sciurus vulgaris), foraging, walnut, in autumn, Saxony, Germany, Europe© Thomas Hinsche / imageBROKER / BiosphotoJPG - RMNon exclusive sale
Sale prohibited by Agents

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Squirrel (Sciurus vulgaris), foraging, walnut, in autumn, Saxony,

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Eurasian red squirrel (Sciurus vulgaris) nibbling nut, springtime, daisies, Germany, EuropeEurasian red squirrel (Sciurus vulgaris) nibbling nut, springtime, daisies, Germany, Europe© Martin Demmel / imageBROKER / BiosphotoJPG - RMNon exclusive sale
Sale prohibited by Agents

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Eurasian red squirrel (Sciurus vulgaris) nibbling nut,

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1 - Bacteria and mould spores Aspergilus sp. and A. niger. aggregated in the crevices of the brou. 2. Xanthomonas bacteria under a bio film. 3. mould spores Aspergilus niger. (in yellow). M.E.B. Magnification X 4000.1 - Bacteria and mould spores Aspergilus sp. and A. niger. aggregated in the crevices of the brou. 2. Xanthomonas bacteria under a bio film. 3. mould spores Aspergilus niger. (in yellow). M.E.B. Magnification X 4000.© Jean Lecomte / BiosphotoJPG - RM

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1 - Bacteria and mould spores Aspergilus sp. and A. niger.

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A1 - Pustule on sow seen at SEM. contaminated with two parasitic fungi : Botryosphaeria and Alternaria alternata. SEM x 700 - (arrows) 2 - Some hyphae of Alternaria alternata cross image B - Enlarged detail of image A. The fissure is filled with Botryosphaeria conidia (in yellow) plus a sclerotia loaded with conidia. (circle) SEM X 2000 - Banyuls sur mer - France - 11.12.2020 -A1 - Pustule on sow seen at SEM. contaminated with two parasitic fungi : Botryosphaeria and Alternaria alternata. SEM x 700 - (arrows) 2 - Some hyphae of Alternaria alternata cross image B - Enlarged detail of image A. The fissure is filled with Botryosphaeria conidia (in yellow) plus a sclerotia loaded with conidia. (circle) SEM X 2000 - Banyuls sur mer - France - 11.12.2020 -© Jean Lecomte / BiosphotoJPG - RM

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A1 - Pustule on sow seen at SEM. contaminated with two parasitic

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Macrographs of the evolution of the acervuli under a walnut leaf: A - 10 June 2019: Formation of pustules. B - July 20, 2019 : Pustules emit sporiferous jelly. C - November 2019, the pustules have become black, flat acervuli, before the pustules are formed.Macrographs of the evolution of the acervuli under a walnut leaf: A - 10 June 2019: Formation of pustules. B - July 20, 2019 : Pustules emit sporiferous jelly. C - November 2019, the pustules have become black, flat acervuli, before the pustules are formed.© Jean Lecomte / BiosphotoJPG - RM

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Macrographs of the evolution of the acervuli under a walnut leaf:

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A - Penetration hole of a caterpillar and nibbling crumbs. In the circle: Polyodaspis fly egg deposited nearby. Chasselay the 5.09.2019A - Penetration hole of a caterpillar and nibbling crumbs. In the circle: Polyodaspis fly egg deposited nearby. Chasselay the 5.09.2019© Jean Lecomte / BiosphotoJPG - RM

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A - Penetration hole of a caterpillar and nibbling crumbs. In the

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A - Reverse side of leaf with a stain loaded with numerous acervuli of Ophiognomonia leptostyla. B - Top of leaf with some acervuli. C - Reverse side of the same leaf loaded with acervuli. - Banyuls sur mer, France, July 5, 2019 -A - Reverse side of leaf with a stain loaded with numerous acervuli of Ophiognomonia leptostyla. B - Top of leaf with some acervuli. C - Reverse side of the same leaf loaded with acervuli. - Banyuls sur mer, France, July 5, 2019 -© Jean Lecomte / BiosphotoJPG - RM

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A - Reverse side of leaf with a stain loaded with numerous

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Cultivation in Petri box of a piece of nut contaminated by Xanthomonas arboricolaen. Whitish colonies on agar; in the insert Microphotography of Xanthomonas arboricola bacteria five days later. Gr. X 300 -Cultivation in Petri box of a piece of nut contaminated by Xanthomonas arboricolaen. Whitish colonies on agar; in the insert Microphotography of Xanthomonas arboricola bacteria five days later. Gr. X 300 -© Jean Lecomte / BiosphotoJPG - RM

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Cultivation in Petri box of a piece of nut contaminated by

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The record: 144 Polyodaspis pupae were found in this nutshell! The 18.02.2019 - Isère, FranceThe record: 144 Polyodaspis pupae were found in this nutshell! The 18.02.2019 - Isère, France© Jean Lecomte / BiosphotoJPG - RM

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The record: 144 Polyodaspis pupae were found in this nutshell!

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A: Rhagoletis laying area degraded by maggots. Box 1 shows two maggots in the brou. Inset 2 is a meeting between a caterpillar and a Rhagoletis maggot. September 20, 2019 - Varacieux - Isère - FranceA: Rhagoletis laying area degraded by maggots. Box 1 shows two maggots in the brou. Inset 2 is a meeting between a caterpillar and a Rhagoletis maggot. September 20, 2019 - Varacieux - Isère - France© Jean Lecomte / BiosphotoJPG - RM

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A: Rhagoletis laying area degraded by maggots. Box 1 shows two

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Close-up on the two kernels with five very young Polyodaspis maggots recently arrived. A: Entrance hole of a caterpillar which rejected its nibbling crumbs outside. - Varacieux, France on 16.06.2018 -Close-up on the two kernels with five very young Polyodaspis maggots recently arrived. A: Entrance hole of a caterpillar which rejected its nibbling crumbs outside. - Varacieux, France on 16.06.2018 -© Jean Lecomte / BiosphotoJPG - RM

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Close-up on the two kernels with five very young Polyodaspis

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A. Husk cut with small galleries of Polyodaspis ruficornis maggots. B - Fly maggot Rhagoletis. In the insert: Mandibular hook of a Rhagoletis maggot. September 16, 2018A. Husk cut with small galleries of Polyodaspis ruficornis maggots. B - Fly maggot Rhagoletis. In the insert: Mandibular hook of a Rhagoletis maggot. September 16, 2018© Jean Lecomte / BiosphotoJPG - RM

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A. Husk cut with small galleries of Polyodaspis ruficornis

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A - Coupe du brou avec asticot Rhagoletis coupé par le scalpel. B - Brou coupé avec galeries de mouches Rhagoletis. Le 16 septembre 2018 - Isère - FranceA - Coupe du brou avec asticot Rhagoletis coupé par le scalpel. B - Brou coupé avec galeries de mouches Rhagoletis. Le 16 septembre 2018 - Isère - France© Jean Lecomte / BiosphotoJPG - RM

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A - Coupe du brou avec asticot Rhagoletis coupé par le scalpel.

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Two Ectomyelois ceratoniae Butterflies emerging from a walnut, The 14.08.2018 - Crespià. Spain, length: 8 mm.Two Ectomyelois ceratoniae Butterflies emerging from a walnut, The 14.08.2018 - Crespià. Spain, length: 8 mm.© Jean Lecomte / BiosphotoJPG - RM

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Two Ectomyelois ceratoniae Butterflies emerging from a walnut,

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Image of the 200 Rhagoletis flies counted in a trap bottle (185 in the field, nearly 200 in total) Bottles hung in a walnut tree. Isère, France, September 3, 2019Image of the 200 Rhagoletis flies counted in a trap bottle (185 in the field, nearly 200 in total) Bottles hung in a walnut tree. Isère, France, September 3, 2019© Jean Lecomte / BiosphotoJPG - RM

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Image of the 200 Rhagoletis flies counted in a trap bottle (185

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Deux noix gravement atteintes par le champignon Botryosphaeria obtusa. (pourriture noire) Banyuls sur mer, France, le 5 juillet 2019 -Deux noix gravement atteintes par le champignon Botryosphaeria obtusa. (pourriture noire) Banyuls sur mer, France, le 5 juillet 2019 -© Jean Lecomte / BiosphotoJPG - RM

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Deux noix gravement atteintes par le champignon Botryosphaeria

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Ophiognomonia spots at two month intervals: A: image of July 12, 2019 B: image of September 31, 2019. In fifty days, the top nut was destroyed. The following month, both nuts had fallen off. Notice the white marks in the center of the spots. Banyuls sur mer, France, July 12 and September 31, 2019 -Ophiognomonia spots at two month intervals: A: image of July 12, 2019 B: image of September 31, 2019. In fifty days, the top nut was destroyed. The following month, both nuts had fallen off. Notice the white marks in the center of the spots. Banyuls sur mer, France, July 12 and September 31, 2019 -© Jean Lecomte / BiosphotoJPG - RM

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Ophiognomonia spots at two month intervals: A: image of July 12,

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Fight against Lepidoptera: depending on the dates of capture, different species are caught by these trap-bottles including Plodia interpunctella and Cydia pomonella which parasitize nuts and apples. These traps operate night and day for four to five months during the summer. Model designed by the author.Fight against Lepidoptera: depending on the dates of capture, different species are caught by these trap-bottles including Plodia interpunctella and Cydia pomonella which parasitize nuts and apples. These traps operate night and day for four to five months during the summer. Model designed by the author.© Jean Lecomte / BiosphotoJPG - RM

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Fight against Lepidoptera: depending on the dates of capture,

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Release of sporipheric jelly from an acervulus, Beaulieu - Isère - FranceRelease of sporipheric jelly from an acervulus, Beaulieu - Isère - France© Jean Lecomte / BiosphotoJPG - RM

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Release of sporipheric jelly from an acervulus, Beaulieu - Isère

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Details of the hyphae producing asci of Alternaria alternata. Les Cerfs, Le Houga (32460) - MEB le 22..09.2020 - X 4500 -Details of the hyphae producing asci of Alternaria alternata. Les Cerfs, Le Houga (32460) - MEB le 22..09.2020 - X 4500 -© Jean Lecomte / BiosphotoJPG - RM

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Details of the hyphae producing asci of Alternaria alternata. Les

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1 - Germ tube advancing towards the open stoma; 2 - Spore emitting germ tube. on 19.08.2019 - SEM X 1800 -1 - Germ tube advancing towards the open stoma; 2 - Spore emitting germ tube. on 19.08.2019 - SEM X 1800 -© Jean Lecomte / BiosphotoJPG - RM

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1 - Germ tube advancing towards the open stoma; 2 - Spore

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Reverse of husk and five sclerotia of Ophiognomonia being formed from the hyphae of the mucilaginous mass. SEM X 4500 - Crespia, Spain, 25.08.2019 -Reverse of husk and five sclerotia of Ophiognomonia being formed from the hyphae of the mucilaginous mass. SEM X 4500 - Crespia, Spain, 25.08.2019 -© Jean Lecomte / BiosphotoJPG - RM

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Reverse of husk and five sclerotia of Ophiognomonia being formed

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Galls of mites of the genus Aceria under 2 walnut leaves. Inserts : Drawing of the Aceria mite . A - cuticle. B - section of a gall - Bresilley, Haute Saône, France, 10.07.2019 .Galls of mites of the genus Aceria under 2 walnut leaves. Inserts : Drawing of the Aceria mite . A - cuticle. B - section of a gall - Bresilley, Haute Saône, France, 10.07.2019 .© Jean Lecomte / BiosphotoJPG - RM

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Galls of mites of the genus Aceria under 2 walnut leaves. Inserts

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1 - Three sclerotia of Ophiognomonia on a background of moss. 1 - In the center, three sclerotia in the process of formation. 2 - Germ tube (arrow) coming out of the spore; 3 - Eight to ten Ophiognomonia spores (in yellow) on a background of moss. SEM X 2000 .1 - Three sclerotia of Ophiognomonia on a background of moss. 1 - In the center, three sclerotia in the process of formation. 2 - Germ tube (arrow) coming out of the spore; 3 - Eight to ten Ophiognomonia spores (in yellow) on a background of moss. SEM X 2000 .© Jean Lecomte / BiosphotoJPG - RM

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1 - Three sclerotia of Ophiognomonia on a background of moss. 1 -

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Lost nut loaded with numerous pustules of the Ophiognomonia fungus. Insert: pustules with sporipheral jelly exit. - Banyuls sur mer, France, September 16, 2020 -Lost nut loaded with numerous pustules of the Ophiognomonia fungus. Insert: pustules with sporipheral jelly exit. - Banyuls sur mer, France, September 16, 2020 -© Jean Lecomte / BiosphotoJPG - RM

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Lost nut loaded with numerous pustules of the Ophiognomonia

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A - (Oxidized) particles rejected by the caterpillar entering the nut near the stalk. B - After cutting the husk, a Cydia pomonella caterpillar is found in its gallery. C - Close-up of the Cydia pomonella caterpillar. D - After being discovered, the caterpillar quickly plugged its gallery with particles from the husk. Saint Avit Riviere - Dordogne - France - the 18.08.2020 -A - (Oxidized) particles rejected by the caterpillar entering the nut near the stalk. B - After cutting the husk, a Cydia pomonella caterpillar is found in its gallery. C - Close-up of the Cydia pomonella caterpillar. D - After being discovered, the caterpillar quickly plugged its gallery with particles from the husk. Saint Avit Riviere - Dordogne - France - the 18.08.2020 -© Jean Lecomte / BiosphotoJPG - RM

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A - (Oxidized) particles rejected by the caterpillar entering the

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Upper and lower side of walnut leaf with mite scab Aceria erinea. (Length about 100 µm) Saint Avit Rivière - Dordogne - FranceUpper and lower side of walnut leaf with mite scab Aceria erinea. (Length about 100 µm) Saint Avit Rivière - Dordogne - France© Jean Lecomte / BiosphotoJPG - RM

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Upper and lower side of walnut leaf with mite scab Aceria erinea.

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Caterpillar hole with 8 black fly chorions Polyodaspis ruficornis. Saint Avit Dordogne River - France - 20.07.2020Caterpillar hole with 8 black fly chorions Polyodaspis ruficornis. Saint Avit Dordogne River - France - 20.07.2020© Jean Lecomte / BiosphotoJPG - RM

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Caterpillar hole with 8 black fly chorions Polyodaspis

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A 1 - Caterpillar hole in the brou. - A 2 - Caterpillar exit hole. Note the 10 white chorions of Polyodaspis. B - Enlarged image A shows about 40 Polyodaspis chorions on the cuticle. - Saint Avit Rivière - Dorgogne - France - the 20.07.2020A 1 - Caterpillar hole in the brou. - A 2 - Caterpillar exit hole. Note the 10 white chorions of Polyodaspis. B - Enlarged image A shows about 40 Polyodaspis chorions on the cuticle. - Saint Avit Rivière - Dorgogne - France - the 20.07.2020© Jean Lecomte / BiosphotoJPG - RM

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A 1 - Caterpillar hole in the brou. - A 2 - Caterpillar exit

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Ectomyelois ceratoniae butterfly just emerging from its chrysalis (under the butterfly) - Size of the butterfly 15 mm. March 25, 2020 - Banyuls sur mer - FranceEctomyelois ceratoniae butterfly just emerging from its chrysalis (under the butterfly) - Size of the butterfly 15 mm. March 25, 2020 - Banyuls sur mer - France© Jean Lecomte / BiosphotoJPG - RM

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Ectomyelois ceratoniae butterfly just emerging from its chrysalis

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2 - The Ectomyelois ceratoniae butterfly came out of its chrysalis and nut through the silk path. 3 - The silk was cut to see the chrysalis from which the butterfly came out. February 24, 2020 - Banyuls sur mer, France - 25.03.20202 - The Ectomyelois ceratoniae butterfly came out of its chrysalis and nut through the silk path. 3 - The silk was cut to see the chrysalis from which the butterfly came out. February 24, 2020 - Banyuls sur mer, France - 25.03.2020© Jean Lecomte / BiosphotoJPG - RM

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2 - The Ectomyelois ceratoniae butterfly came out of its

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A - The kernels have been emptied by Polyodaspis maggots, of which only pupae remain. The faecal balls (below) indicate the presence of a caterpillar. B - After removal of the kernel, a caterpillar Ephestia kuehniella, partially masked, is present on the kernel. Crespià, Spain, 10.09.2019 -A - The kernels have been emptied by Polyodaspis maggots, of which only pupae remain. The faecal balls (below) indicate the presence of a caterpillar. B - After removal of the kernel, a caterpillar Ephestia kuehniella, partially masked, is present on the kernel. Crespià, Spain, 10.09.2019 -© Jean Lecomte / BiosphotoJPG - RM

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A - The kernels have been emptied by Polyodaspis maggots, of

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Extreme case of damage by a caterpillar that has left the nut. There are no more kernels, only faecal pellets remain.Extreme case of damage by a caterpillar that has left the nut. There are no more kernels, only faecal pellets remain.© Jean Lecomte / BiosphotoJPG - RM

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Extreme case of damage by a caterpillar that has left the nut.

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Nine eggs of Polyodaspis were deposited near the hole of caterpillar Lepidoptera, without counting the eggs hidden in the hole and in the crumbs. On the left, exit hole the caterpillar, larger than the entrance hole. (arrow)Nine eggs of Polyodaspis were deposited near the hole of caterpillar Lepidoptera, without counting the eggs hidden in the hole and in the crumbs. On the left, exit hole the caterpillar, larger than the entrance hole. (arrow)© Jean Lecomte / BiosphotoJPG - RM

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Nine eggs of Polyodaspis were deposited near the hole of

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Anything is possible: The opening of the husk shows a cohabitation between some young Polyodaspis maggots which feed on the husk and a caterpillar close to its exit. (arrow) The insert shows another part of the brou with very young maggots. Isère, FranceAnything is possible: The opening of the husk shows a cohabitation between some young Polyodaspis maggots which feed on the husk and a caterpillar close to its exit. (arrow) The insert shows another part of the brou with very young maggots. Isère, France© Jean Lecomte / BiosphotoJPG - RM

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Anything is possible: The opening of the husk shows a

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This Lepidoptera caterpillar hole attracted the Polyodaspis flies which deposited 31 eggs on the cuticle. Others are certainly hidden under the crumbs and in the hole. Close-up: Eggs in circles.This Lepidoptera caterpillar hole attracted the Polyodaspis flies which deposited 31 eggs on the cuticle. Others are certainly hidden under the crumbs and in the hole. Close-up: Eggs in circles.© Jean Lecomte / BiosphotoJPG - RM

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This Lepidoptera caterpillar hole attracted the Polyodaspis flies

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Opening of the husk with 9 or 10 chorions of Polyodaspis on the degraded shell. Inserts: 2 enlarged chorions and a black fly egg at the SEM. Length of the egg = 0.8 mm. The 5.09.2019 Varacieux, Isère, FranceOpening of the husk with 9 or 10 chorions of Polyodaspis on the degraded shell. Inserts: 2 enlarged chorions and a black fly egg at the SEM. Length of the egg = 0.8 mm. The 5.09.2019 Varacieux, Isère, France© Jean Lecomte / BiosphotoJPG - RM

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Opening of the husk with 9 or 10 chorions of Polyodaspis on the

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A - Beginning of contamination by the fungus Botryosphaeria. with small scattered light brown spots. B - Expanding spots. C - 50% of the nut is affected, in constant progression, Crespia, Spain, August 25, 2019.A - Beginning of contamination by the fungus Botryosphaeria. with small scattered light brown spots. B - Expanding spots. C - 50% of the nut is affected, in constant progression, Crespia, Spain, August 25, 2019.© Jean Lecomte / BiosphotoJPG - RM

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A - Beginning of contamination by the fungus Botryosphaeria. with

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Emergence of the Plodia interpucntella butterfly from a walnut - Crespià, Spain, 16.08.2019Emergence of the Plodia interpucntella butterfly from a walnut - Crespià, Spain, 16.08.2019© Jean Lecomte / BiosphotoJPG - RM

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Emergence of the Plodia interpucntella butterfly from a walnut -

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A. Emergence d'un papillon Plodia interpucntella d'une noix - B. Chrysaliide d'où est sorti le papillon. Crespià, Espagne, le 16.08.2019A. Emergence d'un papillon Plodia interpucntella d'une noix - B. Chrysaliide d'où est sorti le papillon. Crespià, Espagne, le 16.08.2019© Jean Lecomte / BiosphotoJPG - RM

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A. Emergence d'un papillon Plodia interpucntella d'une noix - B.

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1 - A - The entrance hole of the gallery was masked by an operculum (in the insert). 2 - Same walnut: After removal of the husk, the gallery dug by the caterpillar appears between A and B, as well as the hole in the joint towards the kernels, plus a few crumbs. Céret August 10, 2019 -1 - A - The entrance hole of the gallery was masked by an operculum (in the insert). 2 - Same walnut: After removal of the husk, the gallery dug by the caterpillar appears between A and B, as well as the hole in the joint towards the kernels, plus a few crumbs. Céret August 10, 2019 -© Jean Lecomte / BiosphotoJPG - RM

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1 - A - The entrance hole of the gallery was masked by an

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Progressive stains of the pathogenic fungus Fusarium lateritium on the upper side of the leaf. Bressilley, Haute-Saône, France - July 10, 2019 -Progressive stains of the pathogenic fungus Fusarium lateritium on the upper side of the leaf. Bressilley, Haute-Saône, France - July 10, 2019 -© Jean Lecomte / BiosphotoJPG - RM

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Progressive stains of the pathogenic fungus Fusarium lateritium

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C - The crumbs were pushed to see the white cover that the Cydia caterpillar wove to protect itself. D - Once the operculum is removed, the hole is visible. The small white spots are eggs of Polyodaspis flies. Céret, France - September 15, 2019 -C - The crumbs were pushed to see the white cover that the Cydia caterpillar wove to protect itself. D - Once the operculum is removed, the hole is visible. The small white spots are eggs of Polyodaspis flies. Céret, France - September 15, 2019 -© Jean Lecomte / BiosphotoJPG - RM

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C - The crumbs were pushed to see the white cover that the Cydia

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Older stains of the Colletotrichum fungus on walnut leaves. Note the circular organization of the acervuli (arrow). Bresiilley, Haute-Saône, France, July 10, 2019 -Older stains of the Colletotrichum fungus on walnut leaves. Note the circular organization of the acervuli (arrow). Bresiilley, Haute-Saône, France, July 10, 2019 -© Jean Lecomte / BiosphotoJPG - RM

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Older stains of the Colletotrichum fungus on walnut leaves. Note

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A - Contamination stain of the fungus Alternaria alternata on walnut leaf. B - Enlarged area A seen under a transparency microscope. with formation of conidial chains of Alternaria alternata. Gr. X 250 - Crespià, Spain, 02.07.2019A - Contamination stain of the fungus Alternaria alternata on walnut leaf. B - Enlarged area A seen under a transparency microscope. with formation of conidial chains of Alternaria alternata. Gr. X 250 - Crespià, Spain, 02.07.2019© Jean Lecomte / BiosphotoJPG - RM

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A - Contamination stain of the fungus Alternaria alternata on

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Reverse side of a leaf affected by Microstroma juglandis. The white dots are sporangia erected from plant cells. The bottom image is the same, but illuminated from below with the cells filled with conidia. Céret, France - 18.06.2019Reverse side of a leaf affected by Microstroma juglandis. The white dots are sporangia erected from plant cells. The bottom image is the same, but illuminated from below with the cells filled with conidia. Céret, France - 18.06.2019© Jean Lecomte / BiosphotoJPG - RM

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Reverse side of a leaf affected by Microstroma juglandis. The

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Underside of a walnut leaf parasitized by the fungus Microstroma juglandis. The white dots are erect sporangia loaded with spores. Céret, France - 18.06.2019Underside of a walnut leaf parasitized by the fungus Microstroma juglandis. The white dots are erect sporangia loaded with spores. Céret, France - 18.06.2019© Jean Lecomte / BiosphotoJPG - RM

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Underside of a walnut leaf parasitized by the fungus Microstroma

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