Morphology and Histology of the Reproductive System of the Imported Fire Ant Queen, Solenopsis saevissima richteri1

Hermann, Henry R.; Blum, Murray S.

doi:10.1093/aesa/58.1.81

Cited by 12 publications

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“…Workers were considered as minors if their head capsules measured less than 550 mm across, and majors if the heads were more than 700 mm (Sokolova et al 2005 a). Queens of polygyne colonies were differentiated from de-alate females by the presence of spermatheca filled with spermatozoids and follicles containing mature eggs at the proximal region of ovarioles (Hermann and Blum, 1965). The morphology and life-cycle of T. solenopsae were studied during the years 2001-2006. Overall, 1059 individual insects (including fourthinstar larvae, pupae, and imagoes were examined individually; 378 of them were infected with the microsporidium.…”

Section: A T E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Biology and life-cycle of the microsporidium Kneallhazia solenopsae Knell Allan Hazard 1977 gen. n., comb. n., from the fire ant Solenopsis invicta

Sokolova

Fuxa

2008

Parasitology

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Thelohania solenopsae is a unique microsporidium with a life-cycle finely tuned to parasitizing fire ant colonies. Unlike other microsporidia of social hymenopterans, T. solenopsae infects all castes and stages of the host. Four distinctive spore types are produced: diplokaryotic spores, which develop only in brood (Type 1 DK spores); octets of octospores within sporophorous vesicles, the most prominent spore type in adults but never occurring in brood; Nosema-like diplokaryotic spores (Type 2 DK spores) developing in adults; and megaspores, which occur occasionally in larvae 4, pupae, and adults of all castes but predominantly infect gonads of alates and germinate in inseminated ovaries of queens. Type 2 DK spores function in autoinfection of adipocytes. Proliferation of diplokaryotic meronts in some cells is followed by karyogamy of diplokarya counterparts and meiosis, thereby switching the diplokaryotic sequence to octospore or megaspore development. Megaspores transmit the pathogen transovarially. From the egg to larvae 4, infection is inapparent and can be detected only by PCR. Type 1 DK spore and megaspore sequences are abruptly triggered in larvae 4, the key stage in intra-colony food distribution via trophallaxis, and presumably the central player in horizontal transmission of spores. Molecular, morphological, ultrastructural and life-cycle data indicate that T. solenopsae must be assigned to a new genus. We propose a new combination, Kneallhazia solenopsae.

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Section: A T E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Biology and life-cycle of the microsporidium Kneallhazia solenopsae Knell Allan Hazard 1977 gen. n., comb. n., from the fire ant Solenopsis invicta

Sokolova

Fuxa

2008

Parasitology

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“…Detailed morphological descriptions are available for both the male (Tice, 1967) and the female reproductive system (Hermann & Blum, 1965). Detailed morphological descriptions are available for both the male (Tice, 1967) and the female reproductive system (Hermann & Blum, 1965).…”

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confidence: 99%

“…The testes of an immature d are shown by the dotted line surrounding the degenerated testes of a typical mature 5. Hermann & Blum (1965) reported the presence of a muscular fold on the uterine floor of the 9 reproductive system similar to the "valvefold" of the honey bee queen (Mackensen & Tucker, 1970). The female reproductive system is shown in Fig.…”

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“…Morphology. Detailed morphological descriptions are available for both the male (Tice, 1967) and the female reproductive system (Hermann & Blum, 1965). To date, no infor- during the larval stage and begin to degenerate after producing mature sperm (Glancey et al, 1976).…”

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“…The position of the pipette used to deliver sperm to the spermatheca is also shown. Hermann & Blum (1965) reported the presence of a muscular fold on the uterine floor of the 9 reproductive system similar to the "valvefold" of the honey bee queen (Mackensen & Tucker, 1970). During artificial insemination of honey bee queens, a special probe must be used to move the "'valvefoid" to permit passage of the syringe into the median oviduct (Laidlaw, 1944).…”

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confidence: 99%

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INSTRUMENTAL INSEMINATION OF THE FIRE ANT, SOLENOPSIS INVICTA

Ball

Mirenda

Sorensen

et al. 1983

Entomologia Exp Applicata

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Colonies containing ~' d and alate virgin <2 9 were collected from the field and maintained in greenhouse facilities. The alate virgin 9 9 were induced to fly, anesthetized with CO 2 and inseminated with either a mixture of sperm extracted from the ~ seminal vesicles and accessory gland contents or sperm alone. Coconut milk was used as a sperm diluent for each insemination. Flight and sexual maturity were used as criteria for successful inseminations. Of the females we artificially inseminated 65% produced workers. This technique was developed for use with the fire ant and may be modified for use with other ant species.

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Ant queens deposit pheromones and antimicrobial agents on eggs

Meer

Morel

1995

Naturwissenschaften

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Morphology and Histology of the Reproductive System of the Imported Fire Ant Queen, Solenopsis saevissima richteri1

Cited by 12 publications

References 0 publications

Biology and life-cycle of the microsporidium Kneallhazia solenopsae Knell Allan Hazard 1977 gen. n., comb. n., from the fire ant Solenopsis invicta

Biology and life-cycle of the microsporidium Kneallhazia solenopsae Knell Allan Hazard 1977 gen. n., comb. n., from the fire ant Solenopsis invicta

INSTRUMENTAL INSEMINATION OF THE FIRE ANT, SOLENOPSIS INVICTA

Ant queens deposit pheromones and antimicrobial agents on eggs

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