The ultrastructure of Sorubim lima (Teleostei, Siluriformes, Pimelodidae) spermatogenesis: premeiotic and meiotic periods

Quagio-Grassiotto, Iranı́; Carvalho, Edmir Daniel

doi:10.1054/tice.1999.0068

Cited by 28 publications

(49 citation statements)

References 28 publications

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“…Characteristics shared by Callichthyids and others families of Loricarioidea (Table 2) are also found in other siluriform families: Diplomystidae (Quagio-Grassiotto et al, 2001), Amblycipitidae (Lee & Kim, 1999), Clariidae (Mansour et al, 2002), Siluridae (Emel'yanova & Makeyeva, 1991b;Kwon et al, 1998;Lee & Kim, 2001), Ictaluridae (Poirier & Nicholson, 1982;Emel'yanova & Makeyeva, 1991a), Heptapteridae and Pseudopimelodidae (Quagio-Grassiotto et al, 2005), Auchenipteridae (Burns et al, 2002), Pimelodidae (Quagio-Grassiotto & Carvalho, 2000;Santos et al, 2001), and Bagridae (Emel'yanova & Makeyeva, 1991b;Lee, 1998;Kim & Lee, 2000;Mansour & Lahnsteiner, 2003). The states "co-axial centrioles" (character 5) and "presence of electron-dense circular structure in the midpiece" (character 15) are observed only in Corydoradinae corroborating the monophyly of the subfamily.…”

Section: Spermiogenesis In Callichthyinaementioning

confidence: 86%

“…Most of the characteristics of spermatozoon of C. callichthys (Callichthyinae) were similar with those found among the species of Corydoradinae. Character 15, presence of electron-dense circular structure in the midpiece, is also shared by all Corydoradinae species, representing an other unique character of this subfamily, not observed in any other siluriform up to the present (Poirier & Nicholson, 1982;Emel'yanova & Makeyeva, 1991a, b;Kwon et al, 1998;Lee, 1998;Lee & Kim, 1999;Kim & Lee, 2000;Quagio-Grassiotto & Carvalho, 2000;Lee & Kim, 2001;Quagio-Grassiotto et al, 2001;Santos et al, 2001;Burns et al, 2002;Mansour et al, 2002;Mansour & Lahnsteiner, 2003;Quagio-Grassiotto et al, 2005).…”

Section: Spermiogenesis In Callichthyinaementioning

confidence: 91%

“…Based on the siluriform spermatozoa described in the literature (Porier & Nicholson, 1982;Kwon et al, 1998;Lee, 1998;Lee and Kim, 1999;Kim & Lee, 2000;Quagio-Grassiotto & Carvalho, 2000;Lee & Kim, 2001;Quagio-Grassiotto et al, 2001;Santos et al, 2001;Burns et al, 2002;Mansour et al, 2002;Quagio-Grassiotto et al, 2005;Spadella et al, 2006a, b), the midpiece size (character 10) was considered short when its total length was < 1.7 µm, and long when its total length was > 1.7 µm. The cytoplasmic channel size (character 12) was considered short when its total length was < 1.5 µm, and long when its total length was > 1.5 µm.…”

Section: Methodsmentioning

confidence: 99%

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Comparative analysis of spermiogenesis and sperm ultrastructure in Callichthyidae (Teleostei: Ostariophysi: Siluriformes)

2007

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In Corydoradinae, the presence of spermatids in the lumen of the testicular tubules together with spermatozoa suggests that spermatogenesis is of the semicystic type, whereas in Callichthyinae, sperm production occurs entirely within spermatocysts in the germinal epithelium, characterizing cystic spermatogenesis. Spermiogenesis in Callichthyinae is characterized by an initial lateral development of the flagellum, the presence of nuclear rotation to different degrees, an eccentric or medial formation of a nuclear fossa, formation of a cytoplasmic channel, and presence of centriolar migration, being more similar to type I spermiogenesis. In Corydoradinae, spermiogenesis is characterized by eccentric development of the flagellum, the absence of nuclear rotation, an eccentric nuclear fossa formation, formation of a cytoplasmic channel, and absence of centriolar migration, differing from the types previously described. The process of spermatogenesis and spermiogenesis in Corydoradinae and Callichthyinae revealed unique characters for each of these subfamilies, corroborating the hypotheses that they constitute monophyletic groups. In relation to sperm ultrastructure, the comparative analysis of the callichthyid species shows that the general characteristics found in the spermatozoa were similar, thus, reinforcing the hypothesis that the family is monophyletic.Em Corydoradinae, a presença de espermátides junto com espermatozóides no lúmen dos túbulos testiculares sugere uma espermatogênese do tipo semicística, enquanto que em Callichthyinae a produção do esperma ocorre inteiramente dentro dos espermatocistos no epitélio germinativo, caracterizando a espermatogênese cística. A espermiogênese em Callichthyinae é caracterizada por um desenvolvimento inicial lateral do flagelo, pela presença de rotação nuclear em diferentes graus, formação de uma fossa nuclear excêntrica ou medial, formação de um canal citoplasmático, e presença de migração centriolar, sendo mais similar à espermiogênese do tipo I. Em Corydoradinae, a espermiogênese é caracterizada pelo desenvolvimento excêntrico do flagelo, ausência de rotação nuclear, fossa nuclear excêntrica, formação de um canal citoplasmático, e ausência de migração centriolar, diferindo dos tipos descritos previamente. O processo de espermatogênese e espermiogênese em Corydoradinae e Callichthyinae revelaram caracteres únicos para cada subfamília, corroborando a hipótese de que as mesmas constituem grupos monofiléticos. Em relação à ultraestrutura do esperma, a análise comparativa das espécies de Callichthyidae mostra que as características gerais encontradas nos espermatozóides foram similares, reforçando a hipótese de monofilia da família.

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Section: Spermiogenesis In Callichthyinaementioning

confidence: 86%

Section: Spermiogenesis In Callichthyinaementioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

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Comparative analysis of spermiogenesis and sperm ultrastructure in Callichthyidae (Teleostei: Ostariophysi: Siluriformes)

2007

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“…Although the studies by Jamieson (1991) and Mattei (1988Mattei ( , 1991 provided data on spermatozoon structure in the majority of the most important fish groups of the World, the spermatozoa of relatively few Neotropical freshwater fishes have been described (Quagio-Grassiotto and Carvalho, 2000;Quagio-Grassiotto et al, 2001). The Characiformes is one of the dominant groups in Neotropical freshwaters.…”

Section: Spermiogenesis and Spermatozoa Ultrastructure In Five Speciementioning

confidence: 99%

Spermiogenesis and spermatozoa ultrastructure in five species of the Curimatidae with some considerations on spermatozoal ultrastructure in the Characiformes

et al. 2003

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Spermiogenesis in the curimatid species, Steindachnerina insculpta, Cyphocharax gillii, C. modestus, C. spilotus, and Potamorhina altamazonica, is characterized by lateral development of the flagellum, nuclear rotation, eccentric nuclear fossa formation, and chromatin compacted into thick fibers. These spermatozoa exhibit a spherical head containing a nucleus with the chromatin highly condensed into thick fibers with small electron-lucent areas, and no acrosome. The nuclear fossa is of the moderate type and eccentric and penetrated by the centriolar complex. The midpiece is small, has many elongate vesicles, and a short cytoplasmic channel. Mitochondria may be elongate, branched or C-shaped, and are separated from the initial segment of the axoneme by the cytoplasmic channel. The flagellum contains the classical axoneme structure (9+2) and has a membranous compartment in the initial region; it does not have lateral fins. Only small differences were observed among the analyzed species and genera of the Curimatidae. Spermiogenesis and spermatozoa in the Curimatidae have many of the characteristics found in almost all other characiform species. On the other hand, the presence of a membranous compartment in the initial region of curimatid flagella, a structure common in many Cypriniformes spermatozoa, is unknown in other characiforms. Spermiogenesis and the spermatozoa of the Characiformes are discussed.

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“…Another type of spermiogenesis, type III, was described by Quagio-Grassiotto & Oliveira (2008), where the flagellum develops at a central position in relation to the nucleus, the nucleus does not rotate during spermiogenesis, and formation of a nuclear fossa and cytoplasmatic canal does not occur. Spermiogenesis type III is described for species of the family Pimelodidae (Quagio-Grassiotto & Oliveira, 2008;Quagio-Grassiotto & Carvalho, 2000), for some species of Callichthyidae e Loricariidae (Spadella, 2004), and for many species of the family Characidae (Baicere-Silva et al, 2011). Eigenmannia trilineata and the three Brachyhypopomus species analyzed all resemble type I spermatozoa, the most common type among Teleostei (Mattei, 1970), which is also observed in most species of Characiformes (QuagioGrassiotto et al, 2003;Burns et al, 2009), Cypriniformes (Bacceti et al, 1984Burns et al, 2009) and Siluriformes (Poirer & Nicholson, 1982;Burns et al, 2009) studied to date.…”

Section: Discussionmentioning

confidence: 99%

Sperm ultrastructure in three different families of weakly electric fishes (Teleostei: Gymnotiformes)

Giora

Burns

2011

Neotrop. ichthyol.

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This study presents details of sperm ultrastructure for Gymnotus aff. carapo (Gymnotidae), Eigenmannia trilineata (Sternopygidae), and three Brachyhypopomus species (B. draco, B. bombilla, and B. gauderio -Hypopomidae) from southern Brazil. Differences were found among the representatives of the different families. For example, nuclear rotation was present in E. trilineata and in the Brachyhypopomus species, but absent in Gymnotus aff. carapo, and the presence of flagellar fins was only observed in E. trilineata. Some intraspecific variations could also be noticed among the Brachyhypopomus species analyzed. Most of the characters found in the spermatozoa of the species studied herein are shared with species of Gymnotiformes previously analyzed.Este estudo apresenta detalhes sobre a ultraestrutura do espermatozoide de Gymnotus aff. carapo (Gymnotidae), Eigenmannia trilineata (Sternopygidae), e três espécies de Brachyhypopomus (B. draco, B. bombilla, e B. gauderio -Hypopomidae) do sul do Brasil. Diferenças foram encontradas entre os representantes das diferentes famílias, como por exemplo a presença de rotação nuclear em E. trilineata e nas espécies de Brachyhypopomus e a ausência em G. aff. carapo, e a presença de aletas laterais no flagelo observada somente em E. trilineata. Algumas variações intraespecíficas também puderam ser registradas entre as espécies de Brachyhypopomus analisadas. A maioria das características encontradas nos espermatozoides das espécies aqui analisadas são compartilhadas com as demais espécies de Gymnotifomes previamente analisadas.

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The ultrastructure of Sorubim lima (Teleostei, Siluriformes, Pimelodidae) spermatogenesis: premeiotic and meiotic periods

Cited by 28 publications

References 28 publications

Comparative analysis of spermiogenesis and sperm ultrastructure in Callichthyidae (Teleostei: Ostariophysi: Siluriformes)

Comparative analysis of spermiogenesis and sperm ultrastructure in Callichthyidae (Teleostei: Ostariophysi: Siluriformes)

Spermiogenesis and spermatozoa ultrastructure in five species of the Curimatidae with some considerations on spermatozoal ultrastructure in the Characiformes

Sperm ultrastructure in three different families of weakly electric fishes (Teleostei: Gymnotiformes)

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