Morphological aspects of the testes of 18 species of terrestrial of Heteroptera from Northwestern São Paulo (Brazil)

Gomes, Mariana Oliveira; Castanhole, Márcia Maria Urbanin; Souza, Hederson Vinícius de; Murakami, Aline Sumitani; Firmino, Tatiani Seni de Souza; Saran, Priscila Samara; Banho, Cecília Ártico; Monteiro, Letícia Da Silva; Silva, Jocielly Cristina Pereira da; Itoyama, Mary Massumi

doi:10.1590/s1676-06032013000300016

Cited by 15 publications

(17 citation statements)

References 10 publications

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“…The ovaries of D. melacanthus are telotrophic and meroistic, containing a trophic region (tropharium) with a germarium and nurse cells, vitellarium cells with oocytes ( Figure 1A-1C), apical filaments and a pedicel; these anatomical features are found in insects of the same family, as described by other authors (CHAPMAN, 1998;KUGLER et al, 2006;OGORZAŁEK;TROCHIMCZUK, 2009;FORTES et al, 2011;GOMES et al, 2013). In the tropharium, in the ovariole distal region, oocytes and nurse cells are formed, which were also observed in D. melacanthus ( Figure 1A-1C).…”

Section: Ovariole Analysessupporting

confidence: 76%

“…These anatomical and morphological characteristics of D. melacanthus share the same pattern as that of other insects of the same family (ÖZYURT et al, 2013). However, other authors characterizing morphological aspects in the testes of 18 species of Heteroptera reported variation in the number of testicular follicles (GOMES et al, 2013), but, regardless of the number of follicles, each portion of the testicular follicle contains a development zone (CHAPMAN, 1998).…”

Section: Testis Analysesmentioning

confidence: 52%

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Performance of reproductive system of Dichelops melacanthus (Hemiptera: Pentatomidae) subjected to buprofezin and pyriproxyfen: morphological analysis of ovarioles and testes

Cremonez

Pinheiro

Falleiros

et al. 2017

SCA

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The use of insecticides known as insect growth regulators, which are considered more selective to natural enemies, may be an alternative to integrated pest management of stink bugs of the main crops in Brazil. The objective of this study was to evaluate histological changes in the reproductive system of Dichelops melacanthus as well as female fecundity and egg fertility after use of growth-regulating insecticides. The insecticides used were buprofezin (a chitin biosynthesis inhibitor) at a sublethal concentration (LC 30 of 2.99 g L -1 ) and pyriproxyfen (a juvenile hormone analog) at a sublethal concentration (LC 30 of 8.35 mL L -1 ). A completely randomized experimental design was used, with 10 repetitions and 10 insects per experimental unit. Two bioassays were performed: in the first bioassay, fecundity (eggs/ female) and fertility (nymph eclosion) of the insects that survived the insecticides were evaluated; in the second bioassay, morphological alterations of the ovarioles of adult females and of the testes of adult male insects that survived the insecticides were evaluated. Buprofezin and pyriproxyfen did not affect the adult sex ratio or female fecundity. Pyriproxyfen reduced the percentage of ecloded nymphs (71.6%) compared with that of the control and buprofezin (96.4 and 90.6%, respectively) treatments and had an ovicidal effect, with direct and indirect action on embryogenesis. Morphological changes were observed in both treatments with buprofezin and pyriproxyfen. The alterations observed in female and male reproductive systems may occur by the action of buprofezin and pyriproxyfen on the morphology of both ovarioles and testes. Key words: Dose-response curve. Endocrine disruption. Green-belly stink bug. Insect growth regulators. Reproductive organ morphology. ResumoA utilização de inseticidas conhecidos como reguladores de crescimento dos insetos, considerados mais seletivos a inimigos naturais, pode ser uma alternativa no manejo integrado no que se refere ao controle de percevejos-pragas das principais culturas no Brasil. Os objetivos deste trabalho foram avaliar alterações histológicas causadas no aparelho reprodutor de Dichelops melacanthus e a fecundidade das fêmeas e fertilidade de ovos, após o uso de inseticidas reguladores de crescimento. utilizados foram buprofezina (inibidor da biossíntese de quitina), na concentração subletal CL 30 2,99 g L -1 , e o piriproxifem (análogo do hormônio juvenil) na concentração subletal CL 30 8,35 mL L -1 . O delineamento experimental foi inteiramente casualizado, com 10 repetições e 10 insetos por repetição. Foram realizados dois bioensaios: no primeiro foi avaliada a fecundidade (número de ovos/fêmea) e a fertilidade (número de ninfas eclodidas) dos insetos que sobreviveram aos produtos. No segundo bioensaio, foram avaliadas as alterações morfológicas de ovaríolos de fêmeas e testículo de machos de percevejos adultos, que sobreviveram à ação dos inseticidas. Buprofezina e piriproxifem não afetaram a razão sexual de adultos ou mesmo a fecundidade das ...

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Section: Ovariole Analysessupporting

confidence: 76%

Section: Testis Analysesmentioning

confidence: 52%

Performance of reproductive system of Dichelops melacanthus (Hemiptera: Pentatomidae) subjected to buprofezin and pyriproxyfen: morphological analysis of ovarioles and testes

Cremonez

Pinheiro

Falleiros

et al. 2017

SCA

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“…The analysis of the peritoneal sheath of 44 species possible to observe that members of Triatominae subfamily have no interspecific differences, as described by Gomes et al (2013) for phytophagous hemipterans, because all species have a transparent sheath. Like all species of nine genera analyzed show the same coloring, we represent with image the testicle of one species of each genus (Figures 1 and 2).…”

Section: Resultsmentioning

confidence: 91%

Coloration of the testicular peritoneal sheath as a synapomorphy of triatomines (Hemiptera, Reduviidae)

et al. 2014

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., AZEREDO-OLIVEIRA, M.T.V. Coloration of the testicular peritoneal sheath as a synapomorphy of triatomines (Hemiptera, Reduviidae). Biota Neotropica.http://dx.doi.org/10.1590/1676-06032014009914Abstract: Recently, were described some morphological characteristics of 18 species of terrestrial hemipteran grouped in the Alydidae, Coreidae, Corimelaenidae, Lygaeidae, Rhopalidae, Scutelleridae, Tingidae and Reduviidae family that presented found variation in coloration of testicular peritoneal sheath (Reddish, Orange, Yellowish or Transparent). Thus, this study aims to analyzed the coloration of the peritoneal sheath in 44 species of triatomines grouped in nine different genera, with the aim of analyze whether the insects of the Triatominae subfamily also show variations in coloration. By means of analysis of the sheath was possible to observe that members of this subfamily have no interspecific differences, because all species have a transparent sheath. Thus, this paper describes the coloring of the peritoneal sheath in 44 species of the subfamily Triatominae and mainly suggests that the transparent color is one synapomorphy of this important group of insect vectors. Keywords: testicle, Heteroptera, Triatominae subfamily.ALEVI, K.C.C., OLIVEIRA, J., ROSA, J.A., AZEREDO-OLIVEIRA, M.T.V. Coloração da bainha peritoneal testicular como uma sinapomorfia dos triatomíneos (Hemiptera, Reduviidae IntroductionTriatomines are hematophagous insects of medico-sanitary importance because they are considered as the main vector of Chagas disease in the human population. These vectors are included in the Hemiptera order, Heteroptera suborder, Reduviidae family and Triatominae subfamily (Lent & Wygodzinsky 1979).The knowledge of the biology of these vectors is of great importance to public health, because the main way to minimize the incidence of Chagas disease is by controlling populations (Dias & Schofield 1998, Alevi et al. 2012a). The reproductive biology of hemipterans was extensively studied by many aspects, such as anatomical (Barth 1956, Freitas et al. 2008), morphological (Gomes et al. 2013, Rosa et al. 2014, structural (Freitas et al. 2010, Silistino-Souza et al. 2012), ultrastructural (MorielleSouza et al. 2010, Freitas et al. 2010, Silistino-Souza et al. 2012 and cytogenetic (Alevi et al. 2012a(Alevi et al. , b, 2013a(Alevi et al. , b, c, d, 2014a.Recently, Gomes et al. (2013) 14(4): e20140099.Alydidae, Coreidae, Corimelaenidae, Lygaeidae, Rhopalidae, Scutelleridae, Tingidae and Reduviidae family. Among the characteristics, the color of the peritoneal sheath covering the seminiferous tubules was analyzed. The authors found variation in coloration of sheath (Reddish, Orange, Yellowish or Transparent). Thus, this study aims to analyze the peritoneal sheath in 44 species of triatomines grouped in nine different genera (Table 1), with the aim of analyze whether the insects of the Triatominae subfamily also show variations in coloration. Material and MethodsExemplars males of 44 species (Table 1) were provided by ''Triato...

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“…The basal region of deferent ducts with a yellowish color in P. guildinii is one of the major anatomical differences between the studied species. The color of the peritoneal sheath does not follow a pattern among Hemiptera (Gomes et al 2013). However, the sheath is transparent in the studied aquatic Heteroptera families (Castanhole et al 2008(Castanhole et al , 2010Munhoz et al 2020), as occurs in the subfamily Triatominae (Alevi et al 2014).…”

Section: Discussionmentioning

confidence: 82%

Anatomy of male and female reproductive organs of stink bugs pests (Pentatomidae: Heteroptera) from soybean and rice crops

2020

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Pentatomidae comprises a diverse group of stink bugs widely distributed in the Neotropical region. Many species are phytophagous and cause injuries to plants, and can thus be defined as agricultural pests. In this study, the anatomy of the female and male reproductive tracts of three important agricultural pests in Colombia is described: Piezodorus guildinii Westwood, 1837 and Chinavia ubicaRolston 1983, found on soybeans, and Oebalus insularis Stål, 1872, found in rice crops. For that, light microscopy techniques were used. The anatomy of the reproductive tract of sexually mature males of the three species studied consisted of a pair of testes, vas deferens, seminal vesicles, ejaculatory bulb, an ejaculatory duct that opens into an aedeagus, and paired accessory glands. The reproductive tract of females consisted of a pair of ovaries, each with seven telotrophic-meroistic ovarioles, a pair of lateral oviducts, common oviduct, spermatheca, and a genital chamber. Telotrophic ovarioles were comprised of terminal filament, tropharium, vitellarium, and pedicel. Differences in size, color, and position of structures along the reproductive tract were observed between the species examined. Reproductive biology of insects provides informative characters for behavioral and evolutionary studies, as well as useful data for pest control strategies.

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Morphological aspects of the testes of 18 species of terrestrial of Heteroptera from Northwestern São Paulo (Brazil)

Cited by 15 publications

References 10 publications

Performance of reproductive system of Dichelops melacanthus (Hemiptera: Pentatomidae) subjected to buprofezin and pyriproxyfen: morphological analysis of ovarioles and testes

Performance of reproductive system of Dichelops melacanthus (Hemiptera: Pentatomidae) subjected to buprofezin and pyriproxyfen: morphological analysis of ovarioles and testes

Coloration of the testicular peritoneal sheath as a synapomorphy of triatomines (Hemiptera, Reduviidae)

Anatomy of male and female reproductive organs of stink bugs pests (Pentatomidae: Heteroptera) from soybean and rice crops

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