Difference between revisions of "AY Honors/Insect/Siphonaptera/es"

Revision as of 16:22, 17 January 2019

Siphonaptera (Pulga)

Orden: Siphonaptera

Descripción: Las pulgas son parásitos externos, que viven de la sangre de los mamíferos y aves.

Las pulgas son pequeñas (1/16 a 1/8-pulgada [1.5 a 3.3 mm] de largo), ágiles, generalmente de color oscuro (por ejemplo, el marrón rojizo de la pulga de gato), insectos sin alas con piezas bucales en forma de tubo adaptadas para alimentarse de la sangre de sus huéspedes. Sus cuerpos se aplanan de lado a lado, lo que permite un movimiento fácil a través de los pelos o plumas en el cuerpo del huésped. Sus patas son largas, el par trasero está bien adaptado para saltar (verticalmente hasta siete pulgadas [18 cm]; horizontalmente trece pulgadas [33 cm]), alrededor de 200 veces la longitud de su propio cuerpo, haciendo que la pulga sea el mejor saltador de todos los animales (en comparación con el tamaño del cuerpo). El cuerpo de la pulga es duro, pulido y está cubierto con muchos pelos y espinas cortas dirigidas hacia atrás, lo que permite que la pulga pase a través de los pelos de su huésped.

Fleas attack a wide variety of warm-blooded vertebrates including dogs, cats, humans, chickens, rabbits, squirrels, rats and mice. Fleas are a nuisance to their hosts, causing an itching sensation which in turn may result in the host attempting to remove the pest by biting, pecking, scratching etc the vicinity of the parasite. Fleas are not simply a source of annoyance, however. Some people and animals suffer allergic reactions to flea saliva resulting in rashes. Flea bites generally result in the formation of a slightly-raised swollen itching spot with a single puncture point at the center. The bites often appear in clusters or lines, and can remain itchy and inflamed for up to several weeks afterwards. Fleas can also lead to hair loss as a result of frequent scratching and biting by the animal, and can cause anemia in extreme cases.

Besides the problems posed by the creature itself, fleas can also act as a vector for disease. For example, fleas transmitted the bubonic plague between rodents and humans by carrying Yersinia pestis bacteria.

Siphonaptera

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 Las pulgas son parásitos externos, que viven de la sangre de los mamíferos y aves.
-Fleas are small (1/16 to 1/8-inch (1.5 to 3.3 mm) long), agile, usually dark colored (for example, the reddish-brown of the cat flea), wingless insects with tube-like mouthparts adapted to feeding on the blood of their hosts. Their bodies are flattened side to side, permitting easy movement through the hairs or feathers on the host's body. Their legs are long, the hind pair well adapted for jumping (vertically up to seven inches (18 cm); horizontally thirteen inches (33 cm) - around 200 times their own body length, making the flea the best jumper out of all animals (in comparison to body size). The flea body is hard, polished, and covered with many hairs and short spines directed backward, allowing the flea a smooth passage through the hairs of its host.
+Las pulgas son pequeñas (1/16 a 1/8-pulgada [1.5 a 3.3 mm] de largo), ágiles, generalmente de color oscuro (por ejemplo, el marrón rojizo de la pulga de gato), insectos sin alas con piezas bucales en forma de tubo adaptadas para alimentarse de la sangre de sus huéspedes. Sus cuerpos se aplanan de lado a lado, lo que permite un movimiento fácil a través de los pelos o plumas en el cuerpo del huésped. Sus patas son largas, el par trasero está bien adaptado para saltar (verticalmente hasta siete pulgadas [18 cm]; horizontalmente trece pulgadas [33 cm]), alrededor de 200 veces la longitud de su propio cuerpo, haciendo que la pulga sea el mejor saltador de todos los animales (en comparación con el tamaño del cuerpo). El cuerpo de la pulga es duro, pulido y está cubierto con muchos pelos y espinas cortas dirigidas hacia atrás, lo que permite que la pulga pase a través de los pelos de su huésped.
 Fleas attack a wide variety of warm-blooded vertebrates including dogs, cats, humans, chickens, rabbits, squirrels, rats and mice. Fleas are a nuisance to their hosts, causing an itching sensation which in turn may result in the host attempting to remove the pest by biting, pecking, scratching etc the vicinity of the parasite. Fleas are not simply a source of annoyance, however. Some people and animals suffer allergic reactions to flea saliva resulting in rashes. Flea bites generally result in the formation of a slightly-raised swollen itching spot with a single puncture point at the center. The bites often appear in clusters or lines, and can remain itchy and inflamed for up to several weeks afterwards. Fleas can also lead to hair loss as a result of frequent scratching and biting by the animal, and can cause anemia in extreme cases.