Comparative morphology of the spermathecae of some species of Chrysomya Robineau-Desvoidy and Cochliomyia Townsend (Diptera, Calliphoridae)

Harterreiten-Souza, Érica Sevilha; Pujol-Luz, José Roberto

doi:10.1590/s0085-56262012005000002

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…The absence of greater offspring production may be due to two of the three spermathecae sharing a single terminal duct in many species (e.g. [ 37 ]), including in many of the induced three-spermathecae females we scored here, a potential influence that warrants further exploration.…”

Section: Discussionmentioning

confidence: 99%

Reproductive consequences of an extra long-term sperm storage organ

et al. 2020

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Background Sperm storage plays a key role in the reproductive success of many sexually-reproducing organisms, and the capacity of long-term sperm storage varies across species. While there are theoretical explanations for why such variation exists, to date there are no controlled empirical tests of the reproductive consequences of additional long-term sperm storage. While Dipterans ancestrally have three long-term sperm organs, known as the spermathecae, Drosophila contain only two. Results We identified a candidate gene, which we call spermathreecae (sp3), in which a disruption cause the development of three functional spermathecae rather than the usual two in Drosophila. We used this disruption to test the reproductive consequences of having an additional long-term sperm storage organ. Compared to females with two spermathecae, females with three spermathecae store a greater total number of sperm and can produce offspring a greater length of time. However, they did not produce a greater total number of offspring. Conclusions Thus, additional long-term sperm storage in insects may increase female fitness through extending the range of conditions where she produces offspring, or through increasing the quality of offspring via enhanced local sperm competition at fertilization.

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Section: Discussionmentioning

confidence: 99%

Reproductive consequences of an extra long-term sperm storage organ

et al. 2020

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“…The spermatheca (multiple spermathecae in some instances) is an invagination of the eighth abdominal segment (Snodgrass 1935); and its shape and number depend on the group of insects (Harterreiten-Souza and Pujol-Luz 2012, Pascini and Martins 2017). The spermatheca is an important organ that stores and maintains viability of sperm until fertilization, and it has an important role in copulation and oviposition (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The spermatheca is an important organ that stores and maintains viability of sperm until fertilization, and it has an important role in copulation and oviposition (e.g. Gschwentner and Tadler 2000, De Marzo 2008, Harterreiten-Souza and Pujol-Luz 2012, Pascini and Martins 2017). …”

Section: Introductionmentioning

confidence: 99%

Comparative morphology of the spermatheca in Megalopodidae (Coleoptera, Chrysomeloidea)1

Rodríguez-Mirón¹,

Zaragoza‐Caballero²,

López‐Pérez³

2017

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The spermatheca is an organ that stores and maintains viability of sperm until fertilization. It has an important role in copulation and oviposition, and it is highly informative in species delimitation. Here, we present a comparative study of the spermathecal morphology in the coleopteran family Megalopodidae. The spermathecae of 34 species, representing 13 genera and all three subfamilies, were studied. Illustrations are newly provided for all species, except in 14 cases in which illustrations were reproduced from previously published literature. Our results show that each subfamily of Megalopodidae can be effectively differentiated based on the particular spermathecal anatomy. In addition, the spermathecal anatomy presents a range of variation within each subfamily, useful for diagnosing species and, in some cases, identifying groups of genera. For instance, the “American group” is thus recognized in this study.

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The insect spermatheca: an overview

Pascini

Martins

2017

Zoology

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In the female insect, the spermatheca is an ectodermal organ responsible for receiving, maintaining, and releasing sperm to fertilize eggs. The number and morphology of spermathecae vary according to species. Within the spermathecal lumen, substances in the semen and secretions from the spermathecal gland nourish the sperm. Thus, the spermatheca provides an appropriate environment that ensures the long-term viability of sperm. Maintaining sperm viability for long periods within the spermatheca is crucial for insect reproductive success; however, the details of this process remain poorly understood. This review examines several aspects of and gaps in the current understanding of spermatheca biology, including morphology, function, reservoir filling, development, and biochemistry. Despite the importance of the spermatheca in insects, there is little information on the gland secretions and their role in the maintenance and protection of male gametes. Furthermore, in this review, we highlight the current information on spermathecal gland secretions and the likely roles they play in the maintenance and protection of sperm.

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Comparative morphology of the spermathecae of some species of Chrysomya Robineau-Desvoidy and Cochliomyia Townsend (Diptera, Calliphoridae)

Cited by 4 publications

References 8 publications

Reproductive consequences of an extra long-term sperm storage organ

Reproductive consequences of an extra long-term sperm storage organ

Comparative morphology of the spermatheca in Megalopodidae (Coleoptera, Chrysomeloidea)1

The insect spermatheca: an overview

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