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

Abstract

., 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...

Revisiting the hybridization processes in the Triatoma brasiliensis complex (Hemiptera, Triatominae): Interspecific genomic compatibility point to a possible recent diversification of the species grouped in this monophyletic complex

“…the testis of Triatominae [74]. This result can be confirmed by the birth of hybrids in all directions of the crossings (Table 1), which demonstrates that both gonads and gametogenesis are normally occurring in first generation hybrids (F1).…”

Cytogenetic Characterisation ofTriatoma rubrofasciata(De Geer) (Hemiptera, Triatominae) Spermatocytes and Its Cytotaxonomic Application

“…Biological studies of T. rubrofasciata are restricted to starvation resistance (Cortéz & Gonçalves 1998), interspecifc morphometric variability (Patterson et al 2001), morphometry of testis follicles (Freitas et al 2007a), colouration of the testicular peritoneal sheath (Alevi et al 2014a), male accessory gland ultrastructure (Freitas et al 2007b), phylogeny (Hypsa et al 2002;Justi et al 2014) and karyotypic studies (Manna 1950;Alevi et al 2015a).…”

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

“…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).…”