Mecópteros: Diferenzas entre revisións

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== Apareamento ==
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Scorpionflies in the ''Bittacidae'' provide a nuptial meal in the form of a captured insect prey. The size of the prey is correlated with the mating time allowed by the female:<ref>Gullan, P.J. and P.S. Cranston. ''The Insects: An Outline of Entomology'', second edition. 2000: Blackwell Science, Ltd.</ref>
 
ScorpionfliesOs in themecópteros ''Bittacidae'' provideproporcionan aunha nuptialcomida mealnupcial inna theforma formdunha ofpresa a(insecto) captured insect preycapturada. TheO sizetamaño ofda thepresa preyestá iscorrelacionada correlatedco withtempo thede matingapareamento timeque allowedpermite by thea femalefemia:<ref>Gullan, P.J. and P.S. Cranston. ''The Insects: An Outline of Entomology'', second edition. 2000: Blackwell Science, Ltd.</ref>
{{cquote|"Food items such as caterpillars, bugs, and flies are offered to be eaten during copulation. The female is first attracted by a pheromone emitted by one or more vesicles or pouches at the end of the male's abdomen. When the female is near, the vesicles are retracted. The female examines the offering while the male searches for her genitalia with his own. If the gift is rejected, the female flies away. If the gift is accepted, the genitalia of the male couples with that of the female, who lowers herself until she is hanging upside down. She consumes the offering during copulation. The male supports the female by holding her legs or the prey. Field observations show that both sexes mate several times per day. Small or unacceptable offerings result in no or a very short copulation time. Duration depends on the size of the gift. It has been observed that prey 3 to 14 mm long will provide 1 to 17 minutes of copulation in ''Hylobittacus apicalis''. Larger ''H. apicalis'' give prey the size of houseflies in return for 20 to 29 minutes of copulation. This results in a maximum sperm transfer, increased oviposition, and a refractory period."}}
 
{{cquote|"Alimentos como as eirugas, insectos e moscas son ofrecidas para ser comidas durante a copulación. A femia é primeiro atraída por un fenómeno emitido por unha ou máis vesíclas ou bolsas ao final do abdome do macho. Cando a femia está preto, as vesículas están retraídas. A femia examina o regalo mentres que os machos buscan os xenitais dela cos seus. Se o regalo é rexeitado, as femias vanse voando. Se o regalo é aceptado, os xenitais do macho acóplase co da femia, que se baixa ata que ela queda colgando patas arriba. Ela come o regalo durante a copulación. O macho sostén as femias termando das patas dela ou a presa. As observacións de campo mostran que ambos os sexos se aparean varias veces por día. Os regalos pequenos ou inaceptables teñen como resultado ningunha copulación ou unha copulación durante un tempo moi curto. A duración depende do tamaño do regalo. Observouse que se a presa é de 3 a 14 mm de longo proporcionará de 1 a 17 minutos de copulación en ''Hylobittacus apicalis''. ''H. apicalis'' máis grandes ofrecen presas do tamaño de moscas domésticas a combio de 20 a 29 minutos de copulación. Isto resulta nunha transferencia de esperma máxima, incrementa a ovoposición e un período refractario."}}
== Interacción cos humanos ==
 
== Interacción cos humanos ==
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[[Forensic entomology]] makes use of scorpionflies' habit of feeding on human corpses. Scorpionflies were the first insects to arrive at a donated human cadaver observed (by the entomologist Natalie Lindgren) at the Southeast Texas Applied Forensic Science Facility near [[Huntsville, Texas]], and remained on the corpse for one and a half days. The presence of scorpionflies thus indicates that a body must be fresh.<ref>{{cite web |last1=Rutsch |first1=Poncie |title=Finding Crime Clues In What Insects Had For Dinner |url=http://www.npr.org/sections/health-shots/2015/01/22/379091257/finding-crime-clues-in-what-insects-had-for-dinner |publisher=NPR |accessdate=22 June 2015 |date=22 January 2015}}</ref><ref>{{cite web |title=Southeast Texas Applied Forensic Science Facility |url=http://www.shsu.edu/~stafs/ |publisher=STAFS}}</ref>