Sperm storage in males and females of the deepwater shark Portuguese dogfish with notes on oviducal gland microscopic organization

Moura, Teresa; Serra‐Pereira, Bárbara; Gordo, Leonel Serrano; Figueiredo, Ivone

doi:10.1111/j.1469-7998.2010.00775.x

Cited by 30 publications

(62 citation statements)

References 33 publications

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“…The same pattern was observed in the same species by Pratt (1979Pratt ( , 1993, who described those same characteristics for Carcharhinus obscurus and Sphyrna lewini (Pratt, 1993), classifying this system as long-term sperm storage. The same characteristic was suggested for M. antarcticus (Storrie et al, 2008) and Centroscymnus coelolepis (Moura et al, 2011).…”

Section: Discussionsupporting

confidence: 49%

“…The material secreted in the two zones is identified as neutral mucopolysaccharides, but there is a great diversity in the chemical nature of the mucus, which varies according to the reproductive mode of the species (Rusaouën, 1976apud Hamlett et al, 2005Moura et al, 2011). The glandular cells found in these zones were not very evident under LM, and a large number of nuclei in glandular tubules were observed.…”

Section: Discussionmentioning

confidence: 99%

“…The oviducal gland of P. glauca has the same morphological characteristics observed in other elasmobranchs (Hamlett et al, 1998(Hamlett et al, , 2002Storrie et al, 2008;Moura et al, 2011). However, Mattews (1950) studied the reproductive system of Cetorhinus maximus, a shark species of the family Laminidae with aplacental viviparous reproduction of type Oophagia, and described the oviducal gland as a structure different from that of other elasmobranchs: apparently uniform, without clear divisions and without any sign of secretion of shell material.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Morphological analysis of the oviduct, oviducal gland and isthmus of the blue shark Prionace glauca (Linnaeus, 1758) (Elasmobranchii: Carcharhiniformes)

et al. 2015

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Oviducal gland present in elasmobranchs is correlated to the organism's reproductive strategy, and its functions are to produce mucus, to form the egg's tertiary envelope and to store sperm. The gland contains four zones: club, papillary, baffle and terminal. The structures of the oviduct, oviducal gland and isthmus of blue shark Prionace glauca were described using macroscopic, light microscopy and scanning electron microscopy techniques. The epithelium of the oviduct and isthmus is folded and is a simple, columnar, ciliated lining epithelium with glandular cells. In the oviducal gland, the lining tissues in the four zones are similar to the oviduct and isthmus lining. The terminal zone shows the presence of sperm in the lumen of the secretory tubules, which remains stored even in the absence of recent copulation. Here, these organs were studied and their connections in an attempt to elucidate the mechanisms of reproduction in the blue shark, showing the three-dimensional aspects, thus adding morphological information important for the understanding of the structure and functioning of these organs of fundamental importance in the life of the majority of elasmobranchs.A glândula oviducal presente nos elasmobrânquios está correlacionada com a estratégia reprodutiva, cuja função é de produzir o muco, formar o envelope terciário do ovo e armazenar espermatozóides. A glândula contém quatro zonas: club, papilar, baffle e terminal. Foi descrita a estrutura do oviduto, glândula oviducal e istmo do tubarão-azul, Prionace glauca, pelas técnicas macroscópica, microscópica de luz e eletrônica de varredura. Foi observado que no oviduto e istmo o epitélio é pregueado de revestimento simples, colunar, ciliado com células glandulares. Na glândula oviducal o tecido de revestimento é semelhante ao oviduto e istmo nas quatro zonas. Na zona terminal observou-se a presença de espermatozoides no lúmen dos túbulos secretores que permanecem estocados mesmo na ausência de copula recente. Aqui, estudaram-se esses órgãos e suas conexões na tentativa de elucidar os mecanismos da reprodução no tubarão azul, apresentando os aspectos tridimensionais, desta forma agregando informações morfológicas importantes para o entendimento da estrutura e funcionamento desses órgãos de fundamental importância na vida da maioria dos elasmobrânquios.

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Section: Discussionsupporting

confidence: 49%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Morphological analysis of the oviduct, oviducal gland and isthmus of the blue shark Prionace glauca (Linnaeus, 1758) (Elasmobranchii: Carcharhiniformes)

et al. 2015

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“…Given the semi-solitary nature of tiger sharks, the optimal time for copulation may not be compatible with the optimal time for fertilisation or birth (Moura et al, 2011). Reports of mating before parturition Randall, 1992) and post-partum females with the presence of sperm in the uteri (this study) are in contrast with other studies that found post-partum females without the presence of sperm (Prasad, 1945).…”

Section: Reproductive Cyclecontrasting

confidence: 55%

“…Oviducal sperm storage in elasmobranchs has been well documented (Pratt, 1993;Hamlett et al, 1998;Parsons et al, 2008;Moura et al, 2011), however the strategy of sperm storage employed by different species varies greatly. Prasad (1945) was the first to identify oviducal spermatozoa in the posterior shell-secreting tubules in female G. cuvier from India.…”

Section: Reproductive Cyclementioning

confidence: 99%

The biology and ecology of the tiger shark (Galeocerdo cuvier) on the east coast of Australia

Holmes¹

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The tiger shark (Galeocerdo cuvier) (Péron and Lesueur 1822) is the largest of the carcharhinids, with a circumglobal distribution in both tropical and warm temperate coastal and pelagic waters. In the western Pacific, G. cuvier movements are wide-ranging, encompassing the east coast of Australia and south Pacific Islands.Throughout the region, G. cuvier is exposed to a range of commercial, recreational, artisanal and illegal foreign fishery impacts, as both a target and by-product species.Listed as 'near threatened' on the International Union for Conservation of Nature (IUCN) Red List, suitable long term species-specific catch, catch rate and biological data are seldom available for large shark species like G. cuvier, particularly where historical commercial fishery logbook reporting has been poor.Shark control programs targeting large sharks along Australia's east coast have been in operation for over 60 years, using relatively standardised fishing gear in nearshore waters all year round, with historical catch and effort data recorded by shark contractors. Historical catch, catch rate and biological data collected through the Queensland Shark Control Program (QSCP) since 1993 were investigated, which revealed significant declines (p < 0.05) in catch rates of G. cuvier at some tropical and all sub-tropical locations along the Queensland coast. Significant temporal declines in the average size of G. cuvier also occurred at four of the nine locations analysed (p < 0.05), which could be indicative of fishing reducing abundance in these areas. Interannual variability in catches at each location was considerable and warranted careful interpretation with respect to estimating population abundance from these data.Investigation into the spatial and temporal movements of tiger sharks, and how their abundances fluctuate in relation to environmental influences, provided a basis for determining the factors driving this variability.Tiger shark movements were recorded using PAT Mk-10 and SPOT5 electronic tags to investigate G. cuvier spatial dynamics, site fidelity and habitat use off the east coast of Australia. Of the 18 tags deployed, 15 recorded information on depth and/or temperature, and horizontal movements, with tracking times ranging between four and 408 days. Horizontal movements were characterised by combinations of resident and transient behaviour that coincided with seasonal changes in water temperature, with summer migrations from sub-tropical Queensland waters to the southern temperate iii waters of New South Wales (NSW) to exploit the seasonally warm and prey abundant waters. While the majority of movement activity was focused around the continental slope, large-scale migration was evident with one individual moving from offshore Sydney, Australia, to New Caledonia (≈ 1800 km) in 48 days. Periods of tiger shark residency outside of Australia's fisheries management zones highlighted the potential vulnerability of the species to unregulated fisheries, and the importance of crossjurisdictional arrangemen...

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Galeus Melastomus (Chondrichthyes): Reproductive Organs

Porcu¹,

Marongiu²,

Follesa³

2021

Microscopic Anatomy of Animals

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Galeus melastomus females, following the typical elasmobranch pattern, have a reproductive system composed of ovary, anterior and posterior oviducts, oviducal glands, and uteri. However, this species has only a functional right ovary associated with the epigonal organ, a lymphomyeloid tissue, producing different types of blood cells. Information about the microscopic anatomy of epigonal organ, oviducal glands, anterior and posterior oviducts, and uteri are reported. For G. melastomus males, externally characterized by two intromittent organs known as claspers and internally by two equally elongate testes, the histology of the epigonal organ, epididymis, paired deferens ducts, Leydig gland, and seminal vesicle is described.

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Sperm storage in males and females of the deepwater shark Portuguese dogfish with notes on oviducal gland microscopic organization

Cited by 30 publications

References 33 publications

Morphological analysis of the oviduct, oviducal gland and isthmus of the blue shark Prionace glauca (Linnaeus, 1758) (Elasmobranchii: Carcharhiniformes)

Morphological analysis of the oviduct, oviducal gland and isthmus of the blue shark Prionace glauca (Linnaeus, 1758) (Elasmobranchii: Carcharhiniformes)

The biology and ecology of the tiger shark (Galeocerdo cuvier) on the east coast of Australia

Galeus Melastomus (Chondrichthyes): Reproductive Organs

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