Seasonal fecundity and body size in Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae)

Reigada, Carolina; Godoy, Wesley Augusto Conde

doi:10.1590/s1519-566x2005000200003

Cited by 19 publications

(27 citation statements)

References 7 publications

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Section: Resultssupporting

confidence: 70%

“…Reigada & Godoy (2005) have also observed this result in a similar study with C. megacephala; however, positive correlations between fecundity and body size and body size and temperature have been observed in natural populations of the species. The difference in terms of correlation between the life history characters of L. eximia and C. megacephala might be explained by the abundance patterns inherent in each species, since L. eximia has been found throughout the year in spite of temperature changes (Moura et al 1997, Reigada & Godoy 2005. Of all biological parameters directly associated with growth rate in blowfl ies, fecundity plays an important role in population dynamics since it determines the population growth potential (Godoy et al 1996(Godoy et al , 2001).…”

Section: Resultssupporting

confidence: 70%

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Seasonal population dynamics in Lucilia eximia (Wiedemann) (Diptera: Calliphoridae)

Gião¹,

Godoy²

2006

Neotrop. Entomol.

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Neotropical Entomology 35(6):753-756 (2006) Dinâmica Populacional Sazonal em Lucilia eximia (Wiedemann) (Diptera: Calliphoridae) RESUMO -Neste estudo variações sazonais da fecundidade, tamanhos de asa e tíbia foram investigadas em populações naturais de Lucilia eximia (Wiedemann), na tentativa de determinar as alterações bionômicas da espécie, associadas à sazonalidade. Exemplares de L. eximia foram coletados mensalmente em Botucatu, SP, durante dois anos e as fêmeas adultas dissecadas para estimar a fecundidade. O tamanho do corpo foi estimado por medições de asa e tíbia. A fecundidade e o tamanho do corpo foram analisados sazonalmente. Uma trajetória temporal relativamente constante foi encontrada para fecundidade e tamanhos de asa e tíbia durante os 24 meses de estudo. Fortes correlações positivas entre tamanhos de asa e tíbia, fecundidade e tamanho de asa e fecundidade e tamanho de tíbia foram observadas. A manutenção dos valores estáveis em L. eximia indica que a espécie sofreu pouca infl uência sazonal durante o período analisado. Esse resultado confi rma o perfi l demográfi co e bionômico estável da espécie a despeito das variações climáticas sazonais observadas na área de estudo.PALAVRAS-CHAVE: Mosca-varejeira, sazonalidade, fecundidade, tamanho corpóreo ABSTRACT -In this study the seasonal variation of fecundity, wing and tibia sizes were investigated in natural populations of Lucilia eximia (Wiedemann) as an attempt to determine the variations in life history of the species associated to seasonality. Specimens of L. eximia were monthly collected in Botucatu, São Paulo, Brazil, during two years and the adult females dissected to estimate fecundity. Body size was estimated by measuring wing and tibia. Fecundity and body size were seasonally analysed. A relatively constant temporal trajectory was found for fecundity, wing and tibia size over twenty-four months. Strong positive correlations between wing and tibia size, fecundity and wing and fecundity and tibia were observed. The maintenance of stable values in L. eximia indicates that it has suffered little seasonal infl uence over the period analysed. This result confi rms the demographics and life history stable profi le of the species in spite of seasonal climatic changes observed in the study area. KEY WORDS: Blowfl y, fecundity, body sizeLucilia Robineau-Desvoidy species are named greenbottles because of their brilliant metallic green coloration, which appears to vary with age (Smith 1986). However, the species of the genus Lucilia are also considered as blowfl y, since they exhibit the same synanthropic and feeding behavior observed in other Calliphoridae species (Stevens & Wall 1996). Adults, especially males, are frequently found on fl owers where they feed on the nectar (Smith 1986). Most species of Lucilia are saprophagous, breed in carrion and dung, usually being the fi rst to appear in carrion in sunlight (Archer & Elgar 2003). In Brazil the most common Lucilia species is Lucilia eximia Wiedemman (Moura et al. 1997). L. eximia is a nearctic...

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Section: Resultssupporting

confidence: 70%

Section: Resultssupporting

confidence: 70%

Seasonal population dynamics in Lucilia eximia (Wiedemann) (Diptera: Calliphoridae)

Gião¹,

Godoy²

2006

Neotrop. Entomol.

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“…In addition, the results from previous studies designed to investigate the variation of demographic parameters in natural populations of blowflies show a spectrum of parameter values compatible with the numbers used in this study (Reigada & Godoy 2005, Gião & Godoy 2006, Riback & Godoy 2008.…”

Section: Discussionsupporting

confidence: 68%

“…Unfortunately there is no comparable long-term study focusing on real-world observations of population patterns. However, the spectrum of oscillations in natural populations of exotics is probably wider than native species because of the magnitude of their survival and fecundity in natural conditions (Ullyett 1950, Reigada & Godoy 2005, Gião & Godoy 2006, Riback & Godoy 2008.…”

Section: Discussionmentioning

confidence: 99%

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Allee effect in exotic and introduced blowflies

Serra¹,

Costa²,

Godoy³

2011

Neotrop. entomol.

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We combined two models to investigate the theoretical dynamics of five exotic and native blowfly species in response to the Allee effect by using demographic parameters estimated from experimental populations. Most of the results suggest stabilization of dynamic behavior in response to the Allee effect. However, the results depended on the magnitude of the demographic parameters of each species, and also indicated chaotic fluctuations and limit cycles. The results are discussed in the context of larval aggregation, an important biological process for blowflies, which naturally incorporates the Allee effect.

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Do climatic and physical factors affect populations of the blow fly Chrysomya megacephala and house fly Musca domestica?

et al. 2011

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The blow fly, Chrysomya megacephala (Fabricius), and house fly, Musca domestica L., are medically and forensically important flies. The population dynamic of these flies is essential for both control and forensical aspects. The aim of this study was to investigate the climatic and physical factors affecting the population trend of both species in Chiang Mai province, northern Thailand, using the Geographic Information System (GIS). Based on systematic random sampling, 18 study sites were selected in three districts (Mueang Chiang Mai, Mae Rim, and Hang Dong). Six land use types were involved in the study sites, i.e., disturbed mixed deciduous, mixed deciduous forest, mixed orchard, lowland village, city, and paddy field. Adult flies were sampled every 2 weeks using an in-house prototype reconstructable funnel trap. Two types of bait were used--one with fresh beef viscera for luring M. domestica and the other with 1-day tainted beef viscera for luring C. megacephala. Collections were conducted from May 2009 to May 2010, and analysis of climatic factors (temperature, relative humidity, and light intensity) was carried out. Correlation bivariate analysis was performed initially to determine the relationship between climatic factors and the number of flies. Consequently, an ordinary co-kriging approach, in ArcGIS 9.2, was performed to predict the spatial distribution of flies with land use and climatic factors as co-variables. A total of 63,158 flies were captured, with C. megacephala being the most common species collected (68.37%), while only 1.3% were M. domestica, thus proving that C. megacephala was the most abundant species in several land use types. A significantly higher number of females than males was found in both species. Fly populations can be collected throughout most of the year with a peak in late summer, which shows a positive relation to temperature but negative correlation with relative humidity. C. megacephala was predicted to be abundant in every land use type, from lowland to forested areas, while the density of house fly was association with altitude and land use types.

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Seasonal fecundity and body size in Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae)

Cited by 19 publications

References 7 publications

Seasonal population dynamics in Lucilia eximia (Wiedemann) (Diptera: Calliphoridae)

Seasonal population dynamics in Lucilia eximia (Wiedemann) (Diptera: Calliphoridae)

Allee effect in exotic and introduced blowflies

Do climatic and physical factors affect populations of the blow fly Chrysomya megacephala and house fly Musca domestica?

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