Comparison of the spermatozoan morphology of Isognomon bicolor and Isognomon alatus (Mollusca, Bivalvia, Isognomonidae)

Introíni, Gisele Orlandi; Fortunato, Helena; Recco‐Pimentel, Shirlei Maria

doi:10.1016/j.tice.2008.07.002

Cited by 7 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several sperm ultrastructure studies were performed within Mytilidae (Kafanov & Drozdov, 1998;Eckelbarger & Young, 1999;Introíni et al, 2004Introíni et al, , 2009Introíni et al, , 2010Desouky, 2009). Analysis of bivalve relationships integrating morphological characters and molecular markers were recently performed.…”

Section: Discussionmentioning

confidence: 99%

“…Sperm ultrastructure features have been used as tools in studies of taxonomic and phylogenetic relationships of Bivalvia (Popham, 1979;Franzén, 1983;Drozdov & Reunov, 1997;Healy et al, 2000;Drozdov et al, 2009). Several sperm ultrastructure studies were performed within Mytilidae (Kafanov & Drozdov, 1998;Eckelbarger & Young, 1999;Introíni et al, 2004Introíni et al, , 2009Introíni et al, , 2010Desouky, 2009). Analysis of bivalve relationships integrating morphological characters and molecular markers were recently performed.…”

Section: Discussionmentioning

confidence: 99%

“…Brachidontes rodriguezii and B. purpuratus are considered dominant species on hard substrates along the Argentinean coast, nevertheless some reproductive and morphological aspects remain unknown. In bivalves, sperm morphological traits have been used in systematic studies to differentiate closely related species (Introíni et al, 2004(Introíni et al, , 2009Drozdov et al, 2009). Sperm ultrastructure appears to be a highly preserved structure at species level, providing a useful asset in phylogenetic analyses (Garrido & Gallardo, 1996;Drozdov & Reunov, 1997;Kafanov & Drozdov, 1998;Healy et al, 2000;Gladyshev & Drozdov, 2002;Bieler et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sperm ultrastructure in two species of Brachidontes (Bivalvia, Mytilidae) from the south-western Atlantic Ocean

Torroglosa

Giménez

2015

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

Brachidontes rodriguezii and Brachidontes purpuratus have a wide geographic distribution along the Argentinean coast. Both species are abundant in the intertidal area of rocky shores. We used transmission electron microscopy to study the spermatogenesis of B. rodriguezii and the structure of mature spermatozoa from B. rodriguezii and B. purpuratus. Our results show that spermatogenesis in B. rodriguezii is very similar to that reported in other mytilids. The spermatozoa of both Brachidontes are of the primitive or ect-aquasperm type showing a spherical nucleus capped by a conical acrosome with an anterior extension. The chromatin was electron-dense, homogeneous and compact. The mid-piece region consisted of 5 spherical mitochondria grouped in a ring around a pair of short cylindrical centrioles. The flagellum exhibit the typical 9 + 2 microtubule structure. Studies of spermatozoa ultrastructure are considered a useful tool in bivalve phylogeny. Characters in the spermatozoa morphology of these two species were observed and a brief discussion about the sperm morphology along the distribution of both species is presented. We suggest that the acrosome complex presents the most significant differences between both species.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sperm ultrastructure in two species of Brachidontes (Bivalvia, Mytilidae) from the south-western Atlantic Ocean

Torroglosa

Giménez

2015

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

show abstract

“…One of these tools concerns the ultrastructural analysis of male gametes. Size and shape of the nucleus, acrosome, midpiece and periacrosomal material are specific morphological characteristics for orders, families and even species (Franzén 1983;Healy 1995a;Healy et al 2001;Erkan and Sousa 2002;Birkhead et al 2007;Drozdov et al 2009;Introíni et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Spermatozoan ultrastructure and mitochondrial gene sequence ofCaryocorbula caribaea(d'Orbigny, 1853) (Corbulidae: Bivalvia), a species with plasticity in shell morphology

et al. 2015

View full text Add to dashboard Cite

Systematics of Corbulidae supported by anatomical and conchological studies remains confused and controversial because of the considerable phenotypic plasticity of their shells. Ultrastructural spermatozoan study and molecular analyses have been performed to contribute valuable information, which could be used in taxonomy. Electron microscopy was used to analyse sperm cells from specimens of Caryocorbula (Gardner, 1926) exhibiting shell differences. The spermatozoon was of the aquasperm type, showing short acrosome, barrel-shaped nucleus, midpiece composed of four spherical mitochondria and simple flagellum. In addition, about 860 base pairs of mitochondrial large ribosomal subunit (16S rRNA) were sequenced from each individual. The consistent similarity shared by spermatozoa and DNA sequences from all studied specimens indicated that they belonged to one coherent unit, Caryocorbula caribaea (d'Orbigny, 1853), despite the extraordinary plasticity exhibited by their shells.

show abstract

“…; Introíni et al . , ). Several characteristics of spermatozoan ultrastructure have been related to different aspects of reproductive biology.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of sperm ultrastructure of Donax hanleyanus and Donax gemmula (Bivalvia: Donacidae)

2012

View full text Add to dashboard Cite

Introíni, G.O., Passos, F.D. and Recco-Pimentel, S.M. 2013. Comparative study of sperm ultrastructure of Donax hanleyanus and Donax gemmula (Bivalvia: Donacidae). -Acta Zoologica (Stockholm) 94: 261-266.The ultrastructure of bivalve spermatozoa can be species-specific and often provides important taxonomic traits for systematic reviews and phylogenetic reconstructions. Young individuals of the Donacidae species Donax hanleyanus are often identified as samples of Donax gemmula. Hence, the spermatozoa ultrastructure of both species was described in the present work, aiming to identify characters that could be useful for further taxonomic and phylogenetic analyses. D. hanleyanus and D. gemmula spermatozoa were different especially in relation to acrosomal characteristics and chromatin condensation. The spermatozoon produced by D. hanleyanus had a nucleus (exhibiting granular chromatin with a rope-like appearance) capped by a long and conical acrosomal vesicle, which extended itself outward beyond the anterior nuclear fossa. Otherwise, the nucleus of the sperm cell of D. gemmula showed well-compacted chromatin, and its acrosome, which was partially inserted into the anterior nuclear fossa, had a bubble-like tip. In conclusion, the conspicuous ultra-structural differences found between the spermatozoan morphologies were helpful for the discrimination of the species. In conclusion, our results suggest that analyses of sperm ultrastructure of the bivalves in the family Donacidae can be valuable to investigate their taxonomic relatedness. The present results also contribute to assess the monophyletic status of the family.

show abstract

Comparison of the spermatozoan morphology of Isognomon bicolor and Isognomon alatus (Mollusca, Bivalvia, Isognomonidae)

Cited by 7 publications

References 20 publications

Sperm ultrastructure in two species of Brachidontes (Bivalvia, Mytilidae) from the south-western Atlantic Ocean

Sperm ultrastructure in two species of Brachidontes (Bivalvia, Mytilidae) from the south-western Atlantic Ocean

Spermatozoan ultrastructure and mitochondrial gene sequence ofCaryocorbula caribaea(d'Orbigny, 1853) (Corbulidae: Bivalvia), a species with plasticity in shell morphology

Comparative study of sperm ultrastructure of Donax hanleyanus and Donax gemmula (Bivalvia: Donacidae)

Contact Info

Product

Resources

About