Aves-do-paraíso mandam sinais coloridos invisíveis a olhos humanos

[{"selector":"#anim-e32198e0-3749-479f-aeae-ff7c59d260ab","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-02251637-c31f-4551-8b3e-9a5211b7e239","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-8b9eb8ce-be36-43ab-938a-e40ab8269b2d","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-c23451a8-45c7-4284-b4c6-ce615a8ebdfd","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] markaharper1/Wikimedia Commons

[{"selector":"#anim-cb4f8b2f-3dea-4070-9b59-a0645b313228","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4224f778-3941-4f53-909c-27eb88fefb94","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d1c4c779-1a04-4dff-b692-9bcdab83a393","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-4d205646-8f7a-43c6-a526-d6228e4e7d3f","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-3b9054e5-8f98-4ae2-90ca-796c6771fa4f [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(9.913471534036397%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Muitos tipos de aves são vividamente coloridos, mas as aves-do-paraíso são especialmente extravagantes com tons de esmeralda, limão, cobalto e rubi. Agora, uma pesquisa revelou que essas aves também enviam sinais secretos para se comunicar com cores invisíveis aos olhos humanos Andrea Lawardi/Wikimedia Commons

[{"selector":"#anim-65f85d90-dbdd-4b21-bbd3-85a0f3e6ebee","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-622fdb1f-958a-4c75-afaf-debea7195f90","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-110a88ea-1460-47af-bceb-57714f954699","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-fe8b1e0e-e344-4da0-bb3f-b59a09d9d41a","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] A plumagem e partes do corpo das aves-do-paraíso brilham em certas áreas quando vistas sob luz azul e ultravioleta, ou UV, aparecendo em verde brilhante ou verde-amarelado, relataram cientistas em um novo estudo publicado na revista Royal Society Open Science René Martin

[{"selector":"#anim-dc9f0694-3d29-4342-8bed-dc518ca3dc68","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-829096fd-cef7-4ced-8914-72caef5bfa8d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3d01e19c-e856-4b9c-9398-93afe357a038","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-0b7860d5-4f9e-414b-8d12-07eebe722720","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Os pesquisadores descreveram biofluorescência em 37 das 45 espécies conhecidas de aves-do-paraíso, encontradas apenas em florestas tropicais remotas e habitats florestais da Papua-Nova Guiné, leste da Indonésia e partes da Austrália René Martin

[{"selector":"#anim-e9650be9-a09e-493b-919a-9522cc3e19b5","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-55f59c30-7b33-40a7-8b54-211067ae1a16","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cfbf1829-2096-4d86-81c2-89354e0c0345","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-4b3382a4-b892-42b7-a383-99d39fa919f5","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Iluminada por luz azul e UV, a plumagem branca e amarelo-brilhante das aves transmite cores que podem ser usadas em disputas territoriais ou para encontrar parceiros, segundo o estudo René Martin

[{"selector":"#anim-e8c300fc-9f9d-4d15-82b8-1b0abe5105fe","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4943db48-63d8-4786-a020-8e4845029689","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d5614584-e0a3-4df0-83c6-b46020bb5703","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-0bdf5ab1-ecd4-41d1-aa7f-38d03fc62988","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-14b087a0-0fa8-48e3-8bd2-0f79b0a7bdca [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-17.385253715098344%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Embora as aves-do-paraíso sejam conhecidas por suas cores dramáticas, o aspecto biofluorescente de sua comunicação visual não havia sido descrito anteriormente e levanta novas questões sobre como as aves usam pistas visuais J. J. Harrison/Wikimedia Commons

[{"selector":"#anim-8e833a68-faec-4450-9d10-31e62f32e908","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c539c687-e2b8-4cbe-996e-3c97429be497","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a25c5cd3-9b5e-4a8d-87c8-7087da0b1b1e","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-46389d01-bb52-4629-90b8-c4e84985853c","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-ecb0c56e-a2c5-413d-abcc-fa318d3df952 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(22.746581870016485%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] "Estudar a biofluorescência é importante porque nos ajuda a entender como diferentes grupos evoluíram para se comunicar”, disse Jennifer Lamb, professora associada de biologia na Universidade Estadual de St. Cloud em Minnesota J. J. Harrison/Wikimedia Commons

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