Is cleistospermy and coenospermy related to sperm transfer? A comparative study of the male reproductive system of Pachygrapsus transversus and Pachygrapsus gracilis (Brachyura: Grapsidae)

Tiseo, Gisele Rodrigues; Mantelatto, Fernando L.; Zara, Fernando José

doi:10.1163/1937240x-00002275

Journal of Crustacean Biology

2014

DOI: 10.1163/1937240x-00002275

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Is cleistospermy and coenospermy related to sperm transfer? A comparative study of the male reproductive system of Pachygrapsus transversus and Pachygrapsus gracilis (Brachyura: Grapsidae)

Gisele Rodrigues Tiseo

Fernando L. Mantelatto²,

Fernando José Zara³

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Cited by 14 publications

(35 citation statements)

References 46 publications

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“…; Tiseo et al. ). These glands can vary in their localization, morphology, and function along the vas deferens (Simeó et al.…”

mentioning

confidence: 97%

“…, ; Tiseo et al. ). The spermatophores are transferred from the ejaculatory ducts, which are connected to the penis, to the first pair of pleopods.…”

mentioning

confidence: 98%

“…; Nascimento & Zara ; Tiseo et al. ). Lobular testes are arranged in numerous seminiferous lobules (acini or cysts), with cells in a similar maturation stage, connected to a seminiferous tubule as a central axis.…”

mentioning

confidence: 99%

“…Additional key words: testis, vas deferens, accessory gland, dehiscence, Majoidea Studies on morphology of the male reproductive system and the formation of spermatozoa and spermatophores in Decapoda are essential for the comprehension of the sexual maturation processes of species, as well as to enable assays of population monitoring in natural environments or species cultivation (Jerry 2001;Akarasanon et al 2004;L opez Greco et al 2007;Alfaro-Montoya 2010). The male reproductive system in brachyuran crabs, is composed of a pair of testes, which can be classified as lobular or tubular (Sime o et al 2009;Stewart et al 2010;Zara et al 2012;Nascimento & Zara 2013;Tiseo et al 2014). Lobular testes are arranged in numerous seminiferous lobules (acini or cysts), with cells in a similar maturation stage, connected to a seminiferous tubule as a central axis.…”

mentioning

confidence: 99%

“…Tubular testes consist only of highly convoluted testicular tubules with cells in different maturation stages distributed in different strata, and the mature spermatozoa are released into the seminiferous tubule at the evacuation zone (Minagawa et al 1994;Nagao & Munehara 2003;Sime o et al 2009). The spermatozoa enter the vas deferens, which is divided into three regions known in brachyurans as anterior vas deferens (AVD), in which the spermatophores are produced; median vas deferens (MVD); and posterior vas deferens (PVD), in which the spermatophores and seminal fluid are usually stored (Krol et al 1992;Tiseo et al 2014).…”

mentioning

confidence: 99%

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Male reproductive system of the arrow crab Stenorhynchus seticornis (Inachoididae)

Antunes

Zara

Greco

et al. 2018

Invertebrate Biology

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Our aim was to describe the reproductive system of males and the formation of sperm packages in the seminal receptacle (SR) of recently mated females of the arrow crab Stenorhynchus seticornis. The male reproductive system was analyzed, and was described using light microscopy and histological and histochemical methods. The first pair of gonopods was described by means of scanning electron microscopy. Additionally, the dehiscence of spermatophores was tested using samples obtained from the vas deferens of males and from the seminal receptacle of recently mated females. Testes were tubular type, and each vas deferens consisted of three regions: the anterior vas deferens (AVD), including a proximal portion that was filled with free spermatozoa and a distal portion contained developing spermatophores; the median vas deferens (MVD) that contained completely formed spermatophores; and the posterior vas deferens (PVD), which contained only granular secretions. The accessory gland, which was filled with secretions, was located in the transition region between the MVD and the PVD. The spermatophores from the MVD were of different sizes, and none of them showed dehiscence in seawater, whereas those spermatophores in contact with the seminal receptacle were immediately broken. The ultrastructure of the gonopods revealed the presence of denticles at the distal portion, which contribute to the mechanical rupture of the spermatophore wall during the transfer of sperm. The contents of the PVD and accessory gland of males are transferred together with the spermatophores, and are responsible for the secretions observed among the sperm packets in the SR of the female. We suggest that these secretions formed the layers found in the SR of recently mated females, and may play a role in sperm competition in arrow crabs.

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“…; Tiseo et al. ). These glands can vary in their localization, morphology, and function along the vas deferens (Simeó et al.…”

mentioning

confidence: 97%

“…, ; Tiseo et al. ). The spermatophores are transferred from the ejaculatory ducts, which are connected to the penis, to the first pair of pleopods.…”

mentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Male reproductive system of the arrow crab Stenorhynchus seticornis (Inachoididae)

Antunes

Zara

Greco

et al. 2018

Invertebrate Biology

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Ultrastructure of spermatozoa of spider crabs, family Mithracidae (Crustacea, Decapoda, Brachyura): Integrative analyses based on morphological and molecular data

Assugeni

Magalhães

Bolaños

et al. 2017

Journal of Morphology

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Recent studies based on morphological and molecular data provide a new perspective concerning taxonomic aspects of the brachyuran family Mithracidae. These studies proposed a series of nominal changes and indicated that the family is actually represented by a different number and representatives of genera than previously thought. Here, we provide a comparative description of the ultrastructure of spermatozoa and spermatophores of some species of Mithracidae in a phylogenetic context. The ultrastructure of the spermatozoa and spermatophore was observed by scanning and transmission electron microscopy. The most informative morphological characters analysed were thickness of the operculum, shape of the perforatorial chamber and shape and thickness of the inner acrosomal zone. As a framework, we used a topology based on a phylogenetic analysis using mitochondrial data obtained here and from previous studies. Our results indicate that closely related species share a series of morphological characteristics of the spermatozoa. A thick operculum, for example, is a feature observed in species of the genera Amphithrax, Teleophrys, and Omalacantha in contrast to the slender operculum observed in Mithraculus and Mithrax. Amphithrax and Teleophrys have a rhomboid perforatorial chamber, while Mithraculus, Mithrax, and Omalacantha show a wider, deltoid morphology. Furthermore, our results are in agreement with recently proposed taxonomic changes including the separation of the genera Mithrax (previously Damithrax), Amphithrax (previously Mithrax) and Mithraculus, and the synonymy of Mithrax caribbaeus with Mithrax hispidus. Overall, the spermiotaxonomy of these species of Mithracidae represent a novel set of data that corroborates the most recent taxonomic revision of the family and can be used in future taxonomic and phylogenetic studies within this family.

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Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

Pardo

Zara

Riveros

et al. 2019

Journal of Morphology

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The information available on structures and function of reproductive systems are female-biased in many animal groups and crabs are not an exception. However, knowledge about the male reproductive system can help us to understand evolutionary and ecological processes such as the mating system and mating behavior. This study focuses on an integrative description of the principal regions of the male reproductive system of the purple crab, Homalaspis plana, a commercially exploited crab from the southeastern Pacific. For this description a combination of morphological observation, gravimetric records, histological and histochemical techniques and biochemical analysis were used. Also, a gross description of the seminal receptacle of the female was performed. The male reproductive system of H. plana was highly extended and complex, with a great capacity to produce and store spermatophores and secrete, at least, two kinds of seminal fluids. Sperm production, sperm packaging in spermatophores, storage of spermatophores and seminal liquid secretion were functions localized in specific regions. The vasosomatic index was the highest recorded to date in crabs, symptomatic of a high investment in reproduction. All these traits allow identification of H. plana as an internal sperm plug producer, which matches well with the highly extensible seminal receptacle of females. The great quantity of seminal material transferred to females during mating indicates that males may be able to mate only one time in the reproductive season and thus this species could be vulnerable to sperm depletion in males and sperm limitation in females if the fishery substantively reduced the abundance of males in the populations. K E Y W O R D S Brachyura, mating systems, seminal receptacle, sperm plug, vas deferens

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Is cleistospermy and coenospermy related to sperm transfer? A comparative study of the male reproductive system of Pachygrapsus transversus and Pachygrapsus gracilis (Brachyura: Grapsidae)

Cited by 14 publications

References 46 publications

Male reproductive system of the arrow crab Stenorhynchus seticornis (Inachoididae)

Male reproductive system of the arrow crab Stenorhynchus seticornis (Inachoididae)

Ultrastructure of spermatozoa of spider crabs, family Mithracidae (Crustacea, Decapoda, Brachyura): Integrative analyses based on morphological and molecular data

Integrative depiction of the male reproductive system of the commercial purple crab Homalaspis plana (Platyxanthidae): Structure and function

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