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Plant seeds that look and smell like poop

10/18/2015

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Picture
Photo: J. White
The South African plant Ceratocaryum argenteum, more commonly known as restiads, use fecal mimicry as a survival tactic. The plant produces seeds that look and smell nearly identical to animal droppings, this likeness helps the plant survive by facilitating a seed-spreading mechanism known as dispersal. 

​Unsuspecting dung beetles come across these pungent pods and mistake them for animal feces, their primary source of food and nesting material. The naïve beetle rolls the imposter dung home and buries it, but by the time the beetle realizes its finding is a dud, the seed has already been effectively dispersed. To witness the trickery in action, researchers scattered 195 seeds throughout “stations” at the De Hoop Nature Reserve in South Africa and monitored the seeds with cameras.

Within 24 hours, the dung beetles had rolled nearly half of the seeds out of their original stations, dispersing them throughout the reserve, suggesting that the round, brown, odiferous seeds have evolved to target dung beetles as their gullible transporter. 

Source: 
news.sciencemag.org
​El Ceratocaryum argenteum es una planta sudafricana, más comúnmente conocido como "restiads", las cuales utilizan el mimetismo fecal como una táctica de supervivencia. La planta produce semillas que se ven y huelen de manera casi idéntica el excremento de los animales, esta semejanza ayuda a la planta a sobrevivir, al facilitar un mecanismo de propagación de semillas conocido como dispersión.

Los escarabajos del estiércol confunden estas semillas con heces de animales, su principal fuente de alimentos y material de nidificación. El escarabajo ingenuo tira el estiércol impostor y lo entierra, pero para cuando el escarabajo se da cuenta de que su hallazgo es un fiasco, la semilla ya se ha dispersado de manera efectiva. Para presenciar dicho engaño en la acción, los investigadores dispersaron 195 semillas en todas las "estaciones" de la Reserva Natural en Sudáfrica y monitoreados las semillas con cámaras.

​Dentro de las primeras 24 horas, los escarabajos peloteros habían rodado casi la mitad de las semillas de sus estaciones originales, dispersando a lo largo de la reserva, lo que sugiere que la redondas y olorosos, semillas han evolucionado para tener a los escarabajos del estiércol como su principal transporte. 
​
Fuente: news.sciencemag.org
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