Morphology of reproductive accessory glands in eight species of blood-feeding Hemiptera (Hemiptera, Reduviidae) insect vectors of Chagas disease

Chiang, R. Gary; Chiang, Jennifer A.; Sarquis, Otília; Lima, Marli Maria

doi:10.1016/j.actatropica.2012.01.011

Cited by 19 publications

(23 citation statements)

References 38 publications

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“…The presence of the two tubular spermathecae without associated glands in T. lecticularia is similar to what has been reported in other Triatominae (Davey, 1958;Chiang et al, 2012;Nascimento, 2015), except in Triatoma infestans which has oval espermatheca (Nascimento, 2015).…”

Section: Discussionsupporting

confidence: 66%

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Morphology of the spermatheca of Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859)

et al. 2019

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Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) is a potential vector of Chagas's disease and the comprehension of its reproductive biology is an important tool to control this insect. In the reproductive tract of female insects, the spermatheca plays a crucial role storing male spermatozoa after mating. Whithin insects the spermatheca shows a wide morphological diversity and the analysis of this characteristic can contribute to understand the reproductive biology of the species. This study describes the histology and histochemistry of the spermatheca of T. lecticularia. Females have a pair of elongated spermathecal reservoirs without associated accessory gland. The reservoir opens into the common oviduct via a narrow muscular duct. The reservoir epithelium has single layer of columnar secretory cells. The control of the release of spermatozoa from the spermatheca occurs via the muscular duct. The anatomical features of the spermatheca of T. lecticularia resemble those described of other Reduviidae. However, the histological and histochemical features of spermatheca observed in T. lecticularia were important to explain the maintenance of the viability of the spermatozoa stored.Keywords: Triatominae, morphology, secretion, spermatozoa. Morfologia da espermateca de Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) ResumoTriatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) é um potencial vetor da doença de Chagas e a compreensão de sua biologia reprodutiva é um importante fator para seu controle populacional. No aparelho reprodutor feminino dos insetos, a espermateca desempenha a importante funcão de armazenar os espermatozoides após cópula. Nos insetos, a espermateca apresenta uma ampla diversidade morfológica e a análise destas características pode contribuir com o entendimento da biologia reprodutiva das espécies. Este estudo descreve histológica e histoquimicamente a espermateca de T. lecticularia. As fêmeas tem um par de espermatecas alongadas sem glândulas acessórias associadas. O reservatório conecta-se ao oviduto comum através de um ducto muscular curto que controla a liberação dos espermatozoides. O epitélio do reservatório possui uma camada de células secretoras colunares. As características anatômicas da espermateca de T. lecticularia são semelhantes às encontradas em outros Reduviidae. Entretanto, as características histológicas e histoquímicas observadas na espermateca são importantes para explicar a manutenção da viabilidade dos espermatozoides armazenados.

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Section: Discussionsupporting

confidence: 66%

“…The reproductive female tract of Hemiptera is formed by ovaries, lateral oviducts, a common oviduct, accessory glands and spermatheca (Jahnke et al, 2006;Chiang et al, 2012;Chapman, 2013). During mating the spermatozoa are transferred together with the secretion of the male accessory glands to the spermatheca (Chapman, 2013).…”

Section: Introductionmentioning

confidence: 99%

Morphology of the spermatheca of Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859)

et al. 2019

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“…At its anterior end, this system consists of a pair of ovaries each containing seven ovarioles. Since the developing oocytes in the ovarioles are connected by nutritive cords to the nutritive cells at the anterior end of the ovariole, these ovaries are classified as telotrophic [29]. At their base, the ovarioles are connected to a calyx which, in turn, is connected to the anterior end of the ipsilateral lateral oviduct.…”

Section: Female Reproductive Organsmentioning

confidence: 99%

“…A comparative work on Reduviidae bugs shows that these blood-feeding insect vectors of Chagas disease can vary with respect to the presence of a cement gland and the morphology of their spermathecae [29]. All Reduviidae examined possess spermathecae that are paired blind ended tubes attached to the side of the common oviduct.…”

Section: Female Reproductive Organsmentioning

confidence: 99%

Functional Anatomy of the External and Internal Reproductive Structures in Insect Vectors of Chagas Disease with Particular Reference to Rhodnius prolixus

Chiang¹,

Chiang²

2017

Biological Control of Pest and Vector Insects

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The insect vector of Chagas disease, Rhodnius prolixus, has become a very popular model organism for exploring, among other things, the physiology of insects. Its ability to remain in a state of stasis until after engorging a blood meal has focussed most studies on those physiological and developmental processes triggered by the blood meal leaving the details of its sexual physiology vague. This chapter summarizes the relationship between the male and female by describing their respective reproductive systems and genitalia, and how they function during and after copulation. A number of novel processes are noted, such as the transfer of male secretions without the formation of a spermatophore, pump/valve mechanism in the male aedeagus, sensory and a chemical means by which copulation may be facilitated, and the possible mechanism by which adhesive protein is applied to an egg during ovipositioning. Combined with knowledge of its genome, further studies into the functional anatomy of reproduction in this insect have the potential to increase our understanding of sexual reproduction in Reduviidae bugs, and to suggest new ways to control their population growth and the spread of Chagas disease.

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“…3 Although this chamber has been referred to as the bursa copulatrix, 3,4 we have adopted the term vagina in describing this posterior chamber, which was already described in Rhodnius. 5,6 The spermathecae are blind-ended tubes coming off of the common oviduct that receive and store the sperm until the eggs are fertilized. The development of a more spacious spermatheca and an expanded vagina can be adapted to receive nutrients secreted and also allow a prolonged stock sperm.…”

Section: Introductionmentioning

confidence: 99%

Anatomy of the Spermatophore in Triatomines (Hemiptera, Reduviidae, Triatominae) and Its Applications to the Study of Chagas Disease Vector Biology

Pereira-Lourenço

Santos-Mallet

Freitas³

2013

The American Society of Tropical Medicine and Hygiene

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Abstract. The present study focused on spermatophore structure, transfer, and subsequent destination inside bloodfeeding females of the species Triatoma infestans and Rhodnius neglectus. The morphology of the spermatophore differed between the species studied, such that in T. infestans, the shape was ovaloid, whereas in R. neglectus, the shape resembled a rod. Structures' spine-like cuticulars distributed across the inner surface of the vagina of both species were observed; however, the role of these cuticulars is unknown in Triatominae. In both species, there was an opening in the spermatophore exactly where the common oviduct is connected, thereby making it possible to confirm that the process of spermatozoid migration takes place through this opening. The results obtained show that the spermatophores of T. infestans and R. neglectus differ in size, shape, and structure. Therefore, they can be used as taxonomic markers and may provide information regarding physiology and evolution.

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Morphology of reproductive accessory glands in eight species of blood-feeding Hemiptera (Hemiptera, Reduviidae) insect vectors of Chagas disease

Cited by 19 publications

References 38 publications

Morphology of the spermatheca of Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859)

Morphology of the spermatheca of Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859)

Functional Anatomy of the External and Internal Reproductive Structures in Insect Vectors of Chagas Disease with Particular Reference to Rhodnius prolixus

Anatomy of the Spermatophore in Triatomines (Hemiptera, Reduviidae, Triatominae) and Its Applications to the Study of Chagas Disease Vector Biology

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