Different Developmental Strategies in Two Boreal Blow Flies (Diptera: Calliphoridae)

Abstract

The minimum developmental rates of Protophormia terraenovae (Robineau-Desvoidy) and Calliphora vomitoria (L.) were measured at four temperatures: 12.5, 23, 29, and 35 degrees C. Although both species are Holarctic in distribution and hemisynanthropic, there are important differences in the response of their developmental stages to various temperature regimes. The eggs and feeding larvae of P. terraenovae responded linearly to temperatures from 23 to 35 degrees C, but development was retarded at 12.5 degrees C. The feeding larvae took about 11 times longer to develop at 12.5 than at 23 degrees C, indicating poor cold adaptation. The converse is true of C. vomitoria, which took only 2 times as long at 12.5 than at 23 degrees C but failed to complete development at 29 and 35 degrees C. Our laboratory data and field studies of others suggest that, in nature, P. terraenovae and C. vomitoria prefer breeding in larger carcasses as a survival tactic and means of extending their distribution into colder regions.

Rate of development of forensically-important Dipterain southern Brazil

“…For the carcasses with a different quantity of biomass, the larger the carcass the faster is the development. This is because the abundance of larvae is greater, increasing the internal temperature of the carcass, thus accelerating the development of the Diptera (Greenberg 1991;Turner & Howard 1992;Greenberg & Tantawi 1993). In carcasses of less than 1kg, C. albiceps are not commonly found (Moura et al 1997), possibly because they need higher temperatures, and that is why they colonize larger corpses to complete their development.…”

Light-Induced Variability in Development of Forensically Important Blow FlyPhormia regina(Diptera: Calliphoridae)

“…Within these studies, some only used a photoperiod of 24:0 (L:D) h for one constant temperature (Byrd and Butler 1996, 1997 and used 12:12 (L:D) h for the remaining ßuctuating temperatures. Still, other studies used constant darkness (Grassberger and Reiter 2002a) or did not report the experimental photoperiod (Greenberg and Tantawi 1993;Anderson 2000;Reiter 2001, 2002b;Grassberger et al 2003;Clarkson et al 2004).…”

Estimación del intervalo post-emersión de un cadáver hallado en un embalse en Granada (España)

“…Por otra parte, hay que tener en cuenta que también existen diferencias: en el estudio de Wyss se emplean tablas de crecimiento propias que no figuran en la publicación, hay una colonización por parte de Calliphora vicina Robineau-Desvoidy, 1830 posterior a la de C. vomitoria y se lleva a cabo la recomendación mencionada por Marchenko 21 de considerar el tiempo de crecimiento controlado en laboratorio y sustraer los ADDs/ADHs por el mecanismo antes explicado. En nuestro caso, hemos empleado tablas de crecimiento que se puedan encontrar tras una revisión bibliográfica 20,21 .…”

“…Basándonos en experiencias previas en la cría bajo condiciones controladas de especímenes de C. vomitoria, utilizaremos los datos sobre desarrollo publicados por Greenberg y Tantawi 20 considerando una temperatura basal de 3ºC 20,21 , ya que son los que más se ajustan a nuestros resultados y se pueden consultar en una búsqueda bibliográfica (Tabla 2).…”

“…Para esa fase, consideramos un ADD-B3 de referencia (ADD con temperatura basal de 3ºC) de 181,45 20,21 . Marchenko 21 recomienda que las larvas se críen en condiciones controladas hasta alcanzar la fase de pupa o el adulto.…”