Cytodifferentiation during the spermatogenesis of the hermaphrodite caridea Exhippolysmata oplophoroides

Nunes, Érika Takagi; Braga, Adriane Araújo; Santos, Daniela Carvalho dos; Camargo‐Mathias, Maria Izabel

doi:10.1016/j.micron.2010.04.005

Cited by 15 publications

(19 citation statements)

References 38 publications

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“…On the other hand, Nunes et al. () characterize only one type of spermatocyte for the caridean E. oplophoroides , consisting of one cell with large nucleus and disperse, decondensed chromatin, differing from the results found in the present study.…”

Section: Discussioncontrasting

confidence: 99%

“…The sperm morphology can be very diverse among the groups. In E. oplophoroides and M. rosenbergii , for instance, this cell possesses discoid nucleus and presents a single spike (Nunes et al., ; Poljaroen et al., ). In turn, in the decapods Astacus astacus , Callinectes sapidus and Panulirus argus the gametes are considered multistellate, showing several spikes in their structure (Krol et al.…”

Section: Discussionmentioning

confidence: 99%

“…); prawns, as Sicyonia ingentis (Shigekawa and Clark ), Litopenaeus vannamei (Alfaro‐Montoya ); and carideans, such as Exhippolysmata oplophoroides (Nunes et al. ) and Macrobrachium rosenbergii (Poljaroen et al. ) among others.…”

Section: Introductionmentioning

confidence: 99%

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Functional morphology of the male reproductive system in Callichirus major (Crustacea: Decapoda: Axiidea): Evidence of oocytes in the gonad

et al. 2017

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Resumo: Callichirus major pertence à ordem Decapoda e família Callianassidae, sendo uma espécie que habita a região interdial de ecossistemas praianos, sendo amplamente capturada para utilização como isca viva para pesca. O presente estudo objetivou descrever morfologicamente o processo espermatogênico nesta espécie de crustáceo, com a finalidade de entender melhor a sua biologia reprodutiva. Os animais, coletados ao longo da Praia do Corujão, em Piúma/ES, foram triados e, em laboratório, tiveram suas gônadas masculinas dissecadas e submetidas ao processamento histológico de rotina. As células germinativas foram classificadas em: Espermatogônia (SPG); Espermatócito I e II (SPTCI, SPTCII); Espermátide inicial e final (EI, EF) e Espermatozoide (SPZ). Células acessórias também estiverem presentes, possuindo núcleo esférico ou triangular, distribuídas na periferia e entre a linhagem germinativa no lóbulo gonadal. Baseado nas observações microscópicas foi possível constatar que esta espécie possui a espermatogênese assincrônica, indicando que a reprodução pode ocorrer durante o ano todo.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Functional morphology of the male reproductive system in Callichirus major (Crustacea: Decapoda: Axiidea): Evidence of oocytes in the gonad

et al. 2017

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“…The PL is eosinophilic, with a scarce amount of proteins and lipids, large quantities of neutral glycoconjugates, and an absence of acidic glycoconjugates. Nunes, Braga, dos Santos, and Camargo‐Mathias () observed in the caridean Exhippolysmata oplophoroides the presence of PAS‐positive components surrounding spermatozoa within the testes, and proposed that these secretions could play a role in transport and nutrition of sperm cells, as well as spermatophore structure and fixation to the female. On the other hand, López Greco, Vazquez, and Rodríguez () found in the freshwater crayfish Cherax quadricarinatus a large amount of PAS‐positive secretions in the testicular lobes, and proposed that the Sertoli‐like cells could be the source of this acellular material.…”

Section: Discussionmentioning

confidence: 99%

New insights in the male anatomy, spermatophore formation, and sperm structure in Atyidae: The red cherry shrimp Neocaridina davidi

Tomás

Bento

Mutti

et al. 2019

Invertebrate Biology

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This study aims to analyze the functional anatomy of the male reproductive system in Neocaridina davidi, a very popular ornamental species of caridean shrimp. Mature males were cold‐anaesthetized and their reproductive systems were dissected for histological and histochemical analysis, while the spermatozoa and spermatophore wall ultrastructure were analyzed under transmission electron microscopy. The male reproductive system consisted of two coiled testes, which were continuous with the vasa deferentia. Testes were positioned on the dorsal side of the cephalothorax above the hepatopancreas, and comprised seminiferous tubules where spermatogenesis occurred. Each vas deferens (VD) was a long tube dorsolaterally positioned with respect to the hepatopancreas, and increased in diameter at the distal end. Three regions could be recognized in the VD: proximal, middle, and distal. The proximal region had a cylindrical epithelium with secretory cells. The middle region (or typhlosole) had a dorsal fold (or typhlosole) with a thick columnar epithelium and high secretory activity. The spermatophore was a continuous cord with three acellular layers, which were mainly characterized by the presence of neutral glycoconjugates and proteins. The sperm morphology was distinct from the inverted cup‐shaped spermatozoa observed in the majority of caridean shrimps. The spermatozoa in specimens of N. davidi were spherical in shape, with a cross‐striated, single, short spike, and arranged in clusters of three or four sperm cells. The composition of the spermatophore, and the arrangement and form of the spermatozoa, seem to be unique in comparison to other species of Caridea.

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“…The sperm morphology of H. obliquimanus is clearly of the distinct ''thumbtack'' shape described for other caridean genera, such as the hippolytids Lysmata wurdemanni (Gibbes 1850) (Bauer and Holt 1998) and Exhippolysmata oplophoroides (Holthuis 1948) (Nunes et al 2010). The overall sperm cell morphology of H. obliquimanus is similar to that described for H. zostericola by Felgenhauer and Abele (1991), but the addition of the SEM images in this study allows a more detailed account of the acrosomal spike and numerous posterior nuclear arms.…”

Section: Discussionmentioning

confidence: 76%

A novel spermatozoan ultrastructure in the shrimpHippolyte obliquimanusDana, 1852 (Decapoda: Caridea: Hippolytidae)

Terossi¹,

Tudge

Greco

et al. 2012

Invertebrate Reproduction & Development

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Cytodifferentiation during the spermatogenesis of the hermaphrodite caridea Exhippolysmata oplophoroides

Cited by 15 publications

References 38 publications

Functional morphology of the male reproductive system in Callichirus major (Crustacea: Decapoda: Axiidea): Evidence of oocytes in the gonad

Functional morphology of the male reproductive system in Callichirus major (Crustacea: Decapoda: Axiidea): Evidence of oocytes in the gonad

New insights in the male anatomy, spermatophore formation, and sperm structure in Atyidae: The red cherry shrimp Neocaridina davidi

A novel spermatozoan ultrastructure in the shrimpHippolyte obliquimanusDana, 1852 (Decapoda: Caridea: Hippolytidae)

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