The functional anatomy of the male and female reproductive systems of the milkweed bug, Oncopeltus fasciatus (Dallas) (Heteroptera: Lygaeidae)

Bonhag, Philip F.; Wick, James R.

doi:10.1002/jmor.1050930202

Cited by 154 publications

(75 citation statements)

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“…In some insects at one given stage of the final spermiogenesis, the heads of the immature spermatozoa become embedded in the cyst cells cytoplasm (CARSON, 1945;BONHAG & WICK, 1953;WILDE, 1964;CRUZ-LANDIM & FERREIRA, 1981;GILLOT, 1998). In Myogrillus sp.…”

Section: Introductionmentioning

confidence: 99%

Organization of the cysts in bee (Hymenoptera, Apidae) testis: number of spermatozoa per cyst

Cruz-Landim

2001

Iheringia, Sér. Zool.

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The morphology of the cyst cells in Apis mellifera Linné, 1758, Scaptotrigona postica Latreille, 1804, and Melipona bicolor bicolor Lepeletier, 1836 testis, as well as the average number of spermatic cells are reported. The data indicates a supporting and nourrishing role of the cyst cells to the developing cystocytes. The counts of immature spermatozoa in the cysts show an average of 202.8 ± 21.2 spermatozoa for A. mellifera, 117.4 ± 8.68 for S. postica and 88.8 ± 15.57 for M. bicolor, which predict the occurrence of 8 mitotic cycles in the cystocytes of A. mellifera and 7 in the meliponines, considering that only one spermatozoom originates of each final spermatogonium.

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Section: Introductionmentioning

confidence: 99%

Organization of the cysts in bee (Hymenoptera, Apidae) testis: number of spermatozoa per cyst

Cruz-Landim

2001

Iheringia, Sér. Zool.

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“…Previous studies have found that insemination rates are highest during the first hour of copulation, and matings lasting between 1 and 2 h are sufficient to achieve fertilization in the majority of cases (Sillen-Tullberg 1981, 1985. However, the genitalia of many Lygaeidae, including L. equestris, are elongate and complex (Bonhag and Wick 1953;Gschwentner and Tadler 2000;Micholitsch et al 2000;Higgins et al 2009;Aspiras and Angelini 2011) and the delay in insemination may be a result of the time taken for the male processus to traverse the female reproductive tract to reach the spermatheca. This, combined with the high levels of mating failure observed in this group (Tadler et al 1999;Gschwentner and Tadler 2000;Micholitsch et al 2000), suggests that males may make significant investment in copulation duration due to processes of post-copulatory sexual selection (or ''cryptic female choice'': Eberhard 1996).…”

Section: Discussionmentioning

confidence: 99%

Mate-guarding in a promiscuous insect: species discrimination influences context-dependent behaviour

Burdfield‐Steel

Shuker

2014

Evol Ecol

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Mating strategy is often informed by social context. However, information on social environment may be sensitive to interference by nearby heterospecifics, a process known as reproductive interference (RI). When heterospecific individuals are present in the environment, failures in species discrimination can lead to sub-optimal mating behaviours, such as misplaced courtship, misplaced rivalry behaviours, or heterospecific copulation attempts. All aspects of mating behaviour that are influenced by social context may be prone to RI, including copulatory behaviours associated with mate-guarding in the presence of possible competitors. Here we investigate the effect of three heterospecifics on the mate-guarding behaviour of male Lygaeus equestris seed bugs. We find that, despite previously reported heterospecific mating harassment amongst these species of lygaeid bug, male L. equestris are able to effectively distinguish rival conspecific males from heterospecifics. Thus, heterospecific mating attempts in this group may reflect selection on males to mate opportunistically, rather than a failure of species discrimination.

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“…The various parts of the reservoir recognised by Bonhag & Wick (1953) in Oncopeltus are not distinct in Oxycarenus; they are fused forming an oblong bowl-shaped structure.…”

Section: O Albidipennisstal 1055 Fig 2b)mentioning

confidence: 99%

“…Works on other Heteroptera were also consulted as many of them are of general significance: Kullenberg (1947); (Bonhag & Wick (1953); Carvalho & Southwood (1955) ; Gross (1965)); Kahlow (1962); Freeman (1947) and Ludwig (1926).…”

Section: Morphology Of the Male Genitalia Of Oxycarenusmentioning

confidence: 99%

A revision of the African species of Oxycarenus (Hemiptera: Lygaeidae)

Samy¹

1969

Transactions of the Royal Entomological Society of London

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The thesis contains uniform redescriptions of 36 African species of Oxycarenus including 15 species described as new. Figures are presented of each species in a way as to facilitate easy recognition; particular emphasis has been placed on the male genitalia, since they appear to provide significant taxonomic features.Earlier workers based the identification of the members of this group entirely on the colour pattern. In the present work coloration was also found to be indispensable especially in the closely related species, where attention is drawn to the fine and subtle colour differences. However, the use of colour pattern is supplemented by other morphological characters.The importance of the male genitalia as a major taxonomic character is revealed. The study has also indicated that the genus Oxycarenus seems to include three separable groups each apparently deserving subgeneric rank. The recognition characters of these subgenera, as well as keys to them and to the species within each subgenus are given.The study also involved a genetic investigation on one polymorphic new species, Oxycarenus multiformis, whose colour forms were previously confused with other species. Holotypes were examined whenever possible; in cases where these are known to have been lost or destroyed neotypes have been designated.Body measurements were made on dried pinned specimens using a binocular microscope with a micrometer eyepiece. Whenever material was available, five specimens of each sex were measured. With some species sets of measurements were made on individuals from different localities. The lengths of the head, pronotum and scutellum were determined dorsally along the median line.The width of head was taken across the compound eyes including their diameter,The width of pronotum was that of its broadest part.All drawings were made to scale, using a square graticule fitted into the eyepiece of a stereoscopic binocular microscope, from dried pinned specimens. Those of the genitalia and other parts separately illustrated, were made from dissected, unmounted parts of the body held in a cavity slide The detailed studies of the genitalia were initially based on a study of freshly killed material. Copulating pairs were instantly killed in boiling water, the posterior half of their abdomens were detached and treated in warm 10% potassium hydroxide. The sexes were then separated by carefully pulling them apart. However, the majority of the species studied were available only as dried, pinned material. In that case the pygophore was carefully removed from the body and softened in hot water for 10 minutes, then it was transferred to warm 10% potassium hydroxide; the solution was repeatedly changed until muscles had cleared.It was found that the aedeagus could not be satisfactorily inflated by alternate use of 10% potassium hydroxide and distilled water as suggested by Ashlock (1957) and Ahmed (1965). Thus careful dissection by hand was found to be inevitable, although parts of the aedeagus were sometimes damaged.The method ...

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The functional anatomy of the male and female reproductive systems of the milkweed bug, Oncopeltus fasciatus (Dallas) (Heteroptera: Lygaeidae)

Cited by 154 publications

References 5 publications

Organization of the cysts in bee (Hymenoptera, Apidae) testis: number of spermatozoa per cyst

Organization of the cysts in bee (Hymenoptera, Apidae) testis: number of spermatozoa per cyst

Mate-guarding in a promiscuous insect: species discrimination influences context-dependent behaviour

A revision of the African species of Oxycarenus (Hemiptera: Lygaeidae)

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