Evolutionary Aspects of Aberrant Meiosis in Some Pentatominae (Heteroptera)

Schradér, Franz

doi:10.2307/2405998

Cited by 23 publications

(16 citation statements)

References 8 publications

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“…Until present a total number of 22 species of 15 genera of Pentatomidae have been reported that present an harlequin lobe with abnormal meiosis. Although there is a common pattern in the meiotic behaviour, all the species that bear it present peculiar traits (Bowen 1922a,b; Schrader 1945a,b, 1946a,b; Martin 1953; Srivastava 1957; Ansley 1958; Schrader 1960a,b; Rebagliati et al. 2001; Lanzone et al.…”

Section: Resultsmentioning

confidence: 99%

“…However, one particular feature of some species of this family is the regular presence of an abnormal meiosis in one testicular lobe (harlequin lobe). Bowen (1922a,b cited in Ueshima 1979) and Schrader (1945a,b, 1946a,b, 1960a,b) were the first to report the presence of this harlequin lobe, and later Rebagliati et al. (2001) and Lanzone et al.…”

Section: Introductionmentioning

confidence: 92%

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Cytogenetic studies in Pentatomidae (Heteroptera): A review

Rebagliati

Mola

Papeschi

et al. 2005

J Zoological System

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The suborder Heteroptera constitutes one of the most important insect groups because most species are plants feeders and cause damage on many plants of economic importance. One of the most important cytogenetic characteristics of Heteroptera is the holokinetic nature of the chromosomes. One particular feature of some species of Pentatomidae is the regular presence of an abnormal meiosis in one testicular lobe (harlequin lobe). From the 28 species cytogenetically analysed from Argentine material, 21 present the diploid number 2n ¼ 14, four species present a reduced number (2n ¼ 12) and another three species possess an increased diploid number (2n ¼ 16); among all these only three present an harlequin lobe. In the present work, a bibliographic review of the chromosome number and sex determining system of 294 species and subspecies belonging to 121 genera within the subfamilies Asopinae, Discocephalinae, Edessinae, Pentatominae, Phyllocephalinae and Podopinae is presented. The male diploid numbers range from six to 27 with a mode in 14 chromosomes; this last diploid number is present in 85% of the species. The sex chromosome determining system is XY/XX except in three species: Macropygium reticulare (Fabricius, 1803), Rhytidolomia senilis (Say, 1832) and Thyanta calceata (Say, 1832) which present derived sex chromosome systems. Furthermore, the cytogenetic relationships with the other families of Pentatomoidea are discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

Cytogenetic studies in Pentatomidae (Heteroptera): A review

Rebagliati

Mola

Papeschi

et al. 2005

J Zoological System

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“…The signifi cance of the two types of direction in the coils of the sperm heads in D. fuscipennis is unclear (Swallow and Wilkinson, 2002). It is well known that the testis of all species of the stinkbug (Pentatomidae, Hemiptera) consists of a number of subdivisions, being compartments of lobes (Schrader, 1960;Swallow and Wilkinson, 2002). In the lobe termed "harlequin," large spermatids containing an excess number of chromosomes become large nonfertile sperm (Schrader, 1960).…”

Section: Parasperm Of Invertebratesmentioning

confidence: 99%

“…It is well known that the testis of all species of the stinkbug (Pentatomidae, Hemiptera) consists of a number of subdivisions, being compartments of lobes (Schrader, 1960;Swallow and Wilkinson, 2002). In the lobe termed "harlequin," large spermatids containing an excess number of chromosomes become large nonfertile sperm (Schrader, 1960). The Japanese cicada Graptopsaltria nigrofuscata produces long and short types of sperm, determined by either the nuclear volume of early spermatids or the nuclear length of a mature sperm.…”

Section: Parasperm Of Invertebratesmentioning

confidence: 99%

Parasperm: morphological and functional studies on nonfertile sperm

Hayakawa

2007

Ichthyol Res

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Sperm polymorphism, a phenomenon in which more than one type of sperm is produced within a species, occurs widely in animals from invertebrates to vertebrates. Sperm in this phenomenon can be categorized into fertile sperm and nonfertile sperm on the basis of fertilization ability. Nonfertile sperm can be further classifi ed into parasperm and aberrant deformed sperm. Parasperm are sperm produced through a constant developmental process along with normal fertile eusperm, and they are readily distinguished from deformed sperm, which are irregularly crippled by unpredictable errors at certain stages during spermatogenesis. Sperm identifi ed as parasperm occur widely in invertebrates but are presently quite limited in vertebrates. This may be the result of the defi ciency both of studies on parasperm and of clear criteria to identify parasperm in vertebrates. Some vertebrates show unique spermatogenesis, such as symplastic spermatid and semicystic spermatogenesis. Thus, parasperm must be identifi ed by comparing cells in each cyst and in semen, because irregularly shaped cells in the seminal duct could be either parasperm or normal spermatids. Although parasperm are identifi ed by clear criteria in vertebrates, only in cottoid fi shes to date, it is possible for parasperm to be discovered in other vertebrates. Recently, roles related to sperm competition have been reported in several species (e.g., the marine cottoid fi sh Hemilepidotus gilberti), and, with some of them, parasperm production is infl uenced by an intraspecifi c factor such as a sex ratio or the density of a population. Sperm competition is one of the important candidates for infl uencing evolution of parasperm functions, but not all parasperm seem to have a relation to sperm competition. Parasperm function may relate to the ecological conditions of each species that produces parasperm. Studies on parasperm function will be advanced by an ecological approach concerning male fertilization success as well as cytological investigation for parasperm.

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“…However, the longer copulations may also have an adaptive explanation. The majority of sperm transferred to the female never reaches the spermathecae (YUVAL et al 1996), raising the possibility that females absorb both the ejaculate and the majority of the sperm as a nuptial gift (see SCHRADER 1960, WHITTIER & KANESHIRO 1991, MARKOW 1996, SNOOK & MARKOW 1996, YUVAL et al 1996. If so, nutritionally deprived females would benefit more than well-fed females from longer copulations, as in the scorpionfly P. vulgaris, where females receive a salivary mass as a nuptial gift from the males (THORNHILL & SAUER 1991).…”

Section: Nutritional Status and Copula Durationmentioning

confidence: 99%

Nutritional status affects copula duration in the Mediterranean fruit fly,Ceratitis capitata(Insecta Tephritidae)

Field

Yuval

1999

Ethology Ecology & Evolution

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We examined the influence of male and female nutritional status on mating behaviour in the Mediterranean fruit fly, Ceratitis capitata (Weidemann). Protein-deprived females mated with males of smaller average size than those chosen by protein-fed females, indicating a relaxation of selectivity in the usual mate preferences of this laboratory strain. The effect of female nutrition on copula duration was stronger than that of male nutrition, suggesting that females exert substantial control over copulation. When both males and females were deprived of protein, copula duration for the first mating was prolonged.

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Evolutionary Aspects of Aberrant Meiosis in Some Pentatominae (Heteroptera)

Cited by 23 publications

References 8 publications

Cytogenetic studies in Pentatomidae (Heteroptera): A review

Cytogenetic studies in Pentatomidae (Heteroptera): A review

Parasperm: morphological and functional studies on nonfertile sperm

Nutritional status affects copula duration in the Mediterranean fruit fly,Ceratitis capitata(Insecta Tephritidae)

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