African dung beetle Onthophagus gazella Fabricius (Coleoptera: Scarabaeidae) esterase isozymes

Martins, Elisabeth Nogueira; Contel, E. P. B.

doi:10.1590/s1519-69842001000400014

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…This may also have affected the dynamics of the population of D. gazella (Fig. 2) because the genetic diversity of this species is considered to be low in Brazil (Martins and Contel 2001).…”

Section: Discussionmentioning

confidence: 99%

The impact of the introduced Digitonthophagus gazella on a native dung beetle community in Brazil during 26 years

et al. 2017

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Following successful establishment in Australia and North America, the South African dung beetle (DB) Digitonthophagus gazella was introduced in Brazil in 1990. We investigated the impact of the exotic species on the native community of 42 native DB species using a unique weekly data set spanning 26 years, including 4 years of pre-invasion data. The invasion of D. gazella was very rapid with abundances increasing by 4 orders of magnitude during the first few years following establishment. We show that the DB diversity shrank to sixty percent of the preinvasion level. Results from multivariate analyses identified three distinct periods of changes in composition and abundance: before the invasion (BI); after invasion I (AI-I); and AI-II each one characterized by a particular dynamic of the native species. The impacts on the native species differed according to their nesting behavior. Species with the same behavior as D. gazella (tunneler) became less abundant and five species went locally extinct. Dweller species, in contrast, became more abundant. Although the analysis of all species combined showed an increase in abundance and a less oscillatory dynamic in AI-II compared to BI, this was the case only for the dweller species, as the tunnelers showed a tendency to continued decrease throughout the 26-year study. Our results show that a new community was originated as a consequence of the invasion, in which dweller species, particularly Labarrus pseudolividus, are the dominant species and all the tunnelers, including D. gazella, are decreasing in abundance. Keywords Scarabaeidae Á Biological invasion Á Invasive species Á Native community Á Dung beetles Á Pasture area Electronic supplementary material The online version of this article (

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Section: Discussionmentioning

confidence: 99%

The impact of the introduced Digitonthophagus gazella on a native dung beetle community in Brazil during 26 years

et al. 2017

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“…Unlike of RAPD markers, isozymes have a codominant nature, allowing for discrimination between heterozygotes and homozygotes (Lewis et al , 2000). Many studies have used isozyme polymorphisms to analyze the genetic variability in insects (Martins & Contel, 2001; Wool & Front, 2003; Martins et al , 2007; Cantagalli et al ., 2010).…”

Section: Introductionmentioning

confidence: 99%

Genetic variability in the natural populations ofLasioderma serricorne(F.) (Coleoptera: Anobiidae), detected by RAPD markers and by esterase isozymes

Coelho-Bortolo

Mangolin

Lapenta

2015

Bull. Entomol. Res.

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Lasioderma serricorne (F.) is a small cosmopolitan beetle regarded as a destructive pest of several stored products such as grains, flour, spices, dried fruit and tobacco. Chemical insecticides are one of the measures used against the pest. However, intensive insecticide use has resulted in the appearance of resistant insect populations. Therefore, for the elaboration of more effective control programs, it is necessary to know the biological aspects of L. serricorne. Among these aspects, the genetic variability knowledge is very important and may help in the development of new control methods. The objective of this study was to evaluate the genetic variability of 11 natural populations of L. serricorne collected respectively in three and four towns in the states of Paraná and São Paulo, Brazil, using 20 primers random amplified polymorphic DNA (RAPD) and polymorphisms of esterases. These primers produced 352 polymorphic bands. Electrophoretic analysis of esterases allowed the identification of four polymorphic loci (Est-2, Est-4, Est-5 and Est-6) and 18 alleles. Results show that populations are genetically differentiated and there is a high level of genetic variability within populations. The high degree of genetic differentiation is not directly correlated to geographical distance. Thus, our data indicate that movement of infested commodities may contribute to the dissemination of L. serricorne, facilitating gene flow.

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Genetic Variability ofDigitonthophagus gazella(F.) (Coleoptera: Scarabaeidae) from Vieques, Puerto Rico and South Africa

Whipple

Lindroth

Hoback

et al. 2012

The Coleopterists Bulletin

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African dung beetle Onthophagus gazella Fabricius (Coleoptera: Scarabaeidae) esterase isozymes

Cited by 3 publications

References 15 publications

The impact of the introduced Digitonthophagus gazella on a native dung beetle community in Brazil during 26 years

The impact of the introduced Digitonthophagus gazella on a native dung beetle community in Brazil during 26 years

Genetic variability in the natural populations ofLasioderma serricorne(F.) (Coleoptera: Anobiidae), detected by RAPD markers and by esterase isozymes

Genetic Variability ofDigitonthophagus gazella(F.) (Coleoptera: Scarabaeidae) from Vieques, Puerto Rico and South Africa

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