Genetic differentiation between body size biotypes of the parasitoid fly Pseudacteon obtusus (Diptera: Phoridae)

Kronforst, Marcus R.; Folgarait, Patricia J.; Patrock, Richard J. W.; Gilbert, Lawrence E.

doi:10.1016/j.ympev.2006.09.003

Cited by 14 publications

(16 citation statements)

References 29 publications

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“…However, the worker ants parasitized by P. disneyi and P. cultellatus did not differ statistically. The low relative abundance and the small body size of P. tricuspis (Table 1) differ from the observations of Fowler (1977) in southeastern Brazil, and these differences suggest the presence of two different species (Kronforst et al, 2007).…”

contrasting

confidence: 68%

Laboratory Rearing and Niche Resources of Pseudacteon spp. Coquillett (Diptera: Phoridae) Parasitoids of Solenopsis saevissima (Smith) (Hymenoptera: Formicidae)

Pesquero¹,

Vaz²,

Arruda³

2013

Sociobiology

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Solenopsis saevissima (Smith) is associated with a group of nine Pseudacteon Coquillett species in Brazil.Pseudacteon affinis Borgmeier, Pseudacteon dentiger Borgmeier and Pseudacteon disneyi Pesquero were created in a laboratory from parasitized workers of S. saevissima. The other phorid species grew only until the pupa phase due to low temperature and humidity when kept in a climatic chamber. Pseudacteon cultellatus Borgmeier was more efficient than the other species, taking 12 days to kill the host workers. Similar to the group of phorid species parasitizingSolenopsis invicta Buren, the daily period of activity and body size are important factors to be considered in the use of these natural enemies in future programs of biological control of S. saevissima.

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contrasting

confidence: 68%

Laboratory Rearing and Niche Resources of Pseudacteon spp. Coquillett (Diptera: Phoridae) Parasitoids of Solenopsis saevissima (Smith) (Hymenoptera: Formicidae)

Pesquero¹,

Vaz²,

Arruda³

2013

Sociobiology

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“…We do not know if different biotypes are true sibling or cryptic species. The unique case of cryptic species is reported for big and small P. obtusus, which have morphological differences in their body sizes and presence versus absence of an aristae in the antennae; however, molecular data suggest that they should be different species (Kronforst et al 2007). However, P. curvatus populations from Brazil and Argentina have the same mean sizes , Wuellner et al 2002, but there is regional variability in the shape of their ovipositors.…”

Section: Discussionmentioning

confidence: 97%

“…At least 22 species of Pseudacteon ßies are known to attack workers of the genus Solenopsis (Porter and Pesquero 2001, Brown et al 2003, Folgarait et al 2005a, Calcaterra 2007, Kronforst et al 2007). Details of life history (Porter et al 1995b;Morrison et al 1997;Folgarait et al 2002aFolgarait et al , 2005bFolgarait et al , 2006, karyotypes in somatic cells (Chirino et al 2006(Chirino et al , 2007, host speciÞcity (Porter et al 1995a, Folgarait et al 2002b, Vazquez et al 2004, Estrada et al 2006, and oviposition behavior , Wuellner et al 2002 have been documented.…”

mentioning

confidence: 99%

Behavior and Development of <I>Pseudacteon curvatus</I> (Diptera: Phoridae) Varies According to the Social Form of Its Host <I>Solenopsis invicta</I> (Hymenoptera: Formicidae) in Its Native Range

Chirino¹,

Gilbert²,

Folgarait³

2009

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We assessed the performance of Pseudacteon curvatus Borgmeier with respect to the social form of Solenopsis invicta Buren in Argentina In the field, we studied the effect the parasitoid on size and proportion of ant foragers. In the laboratory, we evaluated P. curvatus oviposition preferences; host size elected; developmental periods; and sexual size dimorphism, sex ratio, and parasitoid survivorship. P. curvatus affected the average size of foraging workers on both social forms diminishing the proportion of big and increasing the proportion of minor workers. P. curvatus required a shorter orientation time and exhibited a greater number of attacks when ovipositing on monogynes workers. In the laboratory, host sizes elected by P. curvatus were similar between social forms. However, attacks on polygyne colonies were more variable, increasing the number of unviable offspring. Developmental times of females and males of P. curvatus were similar for both social forms, but total developmental periods were shorter for males from monogyne colonies. We did not find differences between sexes in emerging adults' size by social form and the female: male sex ratio was 1:1 for both social forms. P. curvatus pupae survival and adult emergence per trial from monogyne colonies were greater than from polygyne colonies. The rarity of polygyne S. invicta in its native range may prevent this phorid from adjusting its life history to that social form. Consequences of applying this phorid in biological control are discussed.

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“…P. tricuspis ; Porter and Pequeno 2001). Kronfurst et al (2007) found three evolutionary lineages of P. obtusus including two large and one small morpho-types. The smaller morpho-type, which was designated as P. nr.…”

Section: Discussionmentioning

confidence: 99%

Distributional Patterns ofPseudacteonAssociated with theSolenopsis saevissimaComplex in South America

Patrock

Porter

Gilbert

et al. 2009

Journal of Insect Science

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Classical biological control efforts against imported fire ants have largely involved the use of Pseudacteon parasitoids. To facilitate further exploration for species and population biotypes a database of collection records for Pseudacteon species was organized, including those from the literature and other sources. These data were then used to map the geographical ranges of species associated with the imported fire ants in their native range in South America. In addition, we found geographical range metrics for all species in the genus and related these metrics to latitude and host use. Approximately equal numbers of Pseudacteon species were found in temperate and tropical regions, though the majority of taxa found only in temperate areas were found in the Northern Hemisphere. No significant differences in sizes of geographical ranges were found between Pseudacteon associated with the different host complexes of fire ants despite the much larger and systemic collection effort associated with the S. saevissima host group. The geographical range of the flies was loosely associated with both the number of hosts and the geographical range of their hosts. Pseudacteon with the most extensive ranges had either multiple hosts or hosts with broad distributions. Mean species richnesses of Pseudacteon in locality species assemblages associated with S. saevissima complex ants was 2.8 species, but intensively sampled locations were usually much higher. Possible factors are discussed related to variation in the size of geographical range, and areas in southern South America are outlined that are likely to have been under-explored for Pseudacteon associated with imported fire ants.

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Genetic differentiation between body size biotypes of the parasitoid fly Pseudacteon obtusus (Diptera: Phoridae)

Cited by 14 publications

References 29 publications

Laboratory Rearing and Niche Resources of Pseudacteon spp. Coquillett (Diptera: Phoridae) Parasitoids of Solenopsis saevissima (Smith) (Hymenoptera: Formicidae)

Laboratory Rearing and Niche Resources of Pseudacteon spp. Coquillett (Diptera: Phoridae) Parasitoids of Solenopsis saevissima (Smith) (Hymenoptera: Formicidae)

Behavior and Development of <I>Pseudacteon curvatus</I> (Diptera: Phoridae) Varies According to the Social Form of Its Host <I>Solenopsis invicta</I> (Hymenoptera: Formicidae) in Its Native Range

Distributional Patterns ofPseudacteonAssociated with theSolenopsis saevissimaComplex in South America

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