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Titolo:
Survival and reproduction of small blow flies (Calliphora vicina; Diptera : Calliphoridae) produced in severely overcrowded short-day larval cultures
Autore:
Saunders, DS; Wheeler, I; Kerr, A;
Indirizzi:
Univn,dinburgh, Inst Cell Anim & Populat Biol, Edinburgh EH9 3JT, Midlothia Univ Edinburgh Edinburgh Midlothian Scotland EH9 3JT h EH9 3JT, Midlothia
Titolo Testata:
EUROPEAN JOURNAL OF ENTOMOLOGY
fascicolo: 1, volume: 96, anno: 1999,
pagine: 19 - 22
SICI:
1210-5759(1999)96:1<19:SAROSB>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIAPAUSE; FLY; TEMPERATURE; PHOTOPERIOD; DURATION;
Keywords:
Calliphora vicina; larval overcrowding; body size; diapause avoidance; survival; reproduction; resistance to freezing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Saunders, DS UnivT,dinburgh, Inst Cell Anim & Populat Biol, W Mains Rd, Edinburgh EH9 3J Univ Edinburgh W Mains Rd Edinburgh Midlothian Scotland EH9 3JT
Citazione:
D.S. Saunders et al., "Survival and reproduction of small blow flies (Calliphora vicina; Diptera : Calliphoridae) produced in severely overcrowded short-day larval cultures", EUR J ENTOM, 96(1), 1999, pp. 19-22

Abstract

In diapause-destined larval cultures of the blow fly, Cailiphora vicina, competition through severe overcrowding forces down body size and causes thesmaller individuals to escape from the diapause "programme" to form miniature puparia. Among the diapausing cohort, smaller larvae contain a similar proportion of fat to larger larvae, and a similar rate of fat metabolism over the first 7 weeks in diapause. However, these smaller diapausing larvae are much less cold tolerant than larger individuals. Of the miniature larvae that side-step the diapause programme to form puparia, even the smallest of them are capable of development to the adult, and these small-sized adults are capable of depositing "full-sized" eggs (although fewer of them) which hatch to produce "full-sized" and viable larvae. These data suggest thatthe smallest individuals, by avoiding the diapause programme, may gain a selective advantage by completing another autumnal generation instead of entering diapause and failing to survive because of a reduced cold tolerance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/10/20 alle ore 10:33:23