Life table parameters of the pseudococcid predators Nephus includens and Nephus bisignatus (Coleoptera: Coccinelidae)

dc.contributor.author	Kontodimas, DC	en
dc.contributor.author	Milonas, PG	en
dc.contributor.author	Stathas, GJ	en
dc.contributor.author	Economou, LP	en
dc.contributor.author	Kavallieratos, NG	en
dc.date.accessioned	2014-06-06T06:47:25Z
dc.date.available	2014-06-06T06:47:25Z
dc.date.issued	2007	en
dc.identifier.issn	12105759	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3583
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-34848827856&partnerID=40&md5=19c44af2903ed8d0a64bfc9b266e9bc1	en
dc.subject	Coccinellidae	en
dc.subject	Development of immature stages	en
dc.subject	Fecundity	en
dc.subject	Nephus bisignatus	en
dc.subject	Nephus includens	en
dc.subject	Planococcus citri	en
dc.subject	Survival	en
dc.subject	Temperature	en
dc.subject.other	beetle	en
dc.subject.other	developmental stage	en
dc.subject.other	entomology	en
dc.subject.other	fecundity	en
dc.subject.other	life table	en
dc.subject.other	predator	en
dc.subject.other	survival	en
dc.subject.other	temperature	en
dc.subject.other	Weibull theory	en
dc.subject.other	Coccinellidae	en
dc.subject.other	Coleoptera	en
dc.subject.other	Hemiptera	en
dc.subject.other	Nephus	en
dc.subject.other	Planococcus citri	en
dc.subject.other	Pseudococcidae	en
dc.title	Life table parameters of the pseudococcid predators Nephus includens and Nephus bisignatus (Coleoptera: Coccinelidae)	en
heal.type	journalArticle	en
heal.publicationDate	2007	en
heal.abstract	The fecundity of the pseudococcid predators Nephus includens (Boheman) and N. bisignatus (Kirsch) (Coleoptera: Coccinellidae), fed on Planococcus citri Risso (Hemiptera: Pseudococcidae), was studied at several constant temperatures (15, 20, 25, 30, 32.5 and 35°C). With additional data for the development of the immature stages, life-fecundity tables were constructed and some population parameters calculated. The average total fecundities of N. includens at the above temperatures were 49.2, 97.8, 162.8, 108.5, 87.4 and 31.1 eggs/female, and average longevities 99.5, 84.7, 69.5, 61.1, 49.6 and 30.1 days, respectively. The net reproductive rates (R0) were 8.0, 32.2, 60.7, 32.6, 20.7 and 2.6 females/female, and the intrinsic rates of increase (rm) 0.014, 0.041, 0.083, 0.086, 0.077 and 0.024 females/female/day, respectively. The average total fecundities of N. bisignatus at 15, 20, 25, 30 and 32.5 ¿C were 54.7, 72.1, 96.9, 56.0 and 22.8 eggs/female, and average longevities 116.1, 108.7, 71.8, 68.8 and 43.7 days, respectively. The net reproductive rates (R0) were 13.9, 26.4, 31.3, 15.2 and 3.6 females/female and the intrinsic rates of increase (rm) were 0.017, 0.035, 0.060, 0.051 and 0.024 females/female/day, respectively. The survival of females at each temperature was fitted using a Weibull distribution [S(t) = e-( b/t)c]. Furthermore two mathematical models [Enkegaard equation: F = (a + b + x) · e(c+d-x), Analytis equation: F = a · (x-xmin)n. (xmin - x)m] were fitted to the fecundity data.	en
heal.journalName	European Journal of Entomology	en
dc.identifier.issue	3	en
dc.identifier.volume	104	en
dc.identifier.spage	407	en
dc.identifier.epage	415	en