Fine structure of the ladybird spermatozoa (Insecta, Coleoptera, Coccinellidae)

Fine structure of the ladybird spermatozoa (Insecta, Coleoptera, Coccinellidae)

The sperm structure of several ladybird species belonging to different subfamilies of Coccinellidae was studied. Three main sperm types were clearly recognized, and were characterized by differences in acrosomal length, the presence of a dense coat around the acrosome, the length of the basal body,...

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Veröffentlicht in:Ventricular Restraint Improves Outcomes in HF Patients with CRT. - 2011. - Amsterdam [u.a.]
1. Verfasser: Dallai, Romano (VerfasserIn)
Weitere Verfasser: Lino-Neto, José (BerichterstatterIn), Dias, Glenda (BerichterstatterIn), Nere, Pedro H.A. (BerichterstatterIn), Mercati, David (BerichterstatterIn), Lupetti, Pietro (BerichterstatterIn)
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018transfer abstract
Zugriff auf das übergeordnete Werk:Ventricular Restraint Improves Outcomes in HF Patients with CRT
Schlagworte:Ladybird sperm Insect sperm ultrastructure Coleoptera sperm structure
Umfang:13
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520 |a The sperm structure of several ladybird species belonging to different subfamilies of Coccinellidae was studied. Three main sperm types were clearly recognized, and were characterized by differences in acrosomal length, the presence of a dense coat around the acrosome, the length of the basal body, the amount of the centriole adjunct material, and the diameter of the mitochondrial derivatives. However, the whole group shares a pattern of the posterior sperm region uncommon for insects, in which the axoneme and other flagellar components are running parallel with the nucleus. As a general conclusion, this study has revealed an inconsistency between the sperm structure and the systematics of the group, indicating that the generic concepts within the group do not reflect a natural classification, a statement also shared by molecular studies. 
520 |a The sperm structure of several ladybird species belonging to different subfamilies of Coccinellidae was studied. Three main sperm types were clearly recognized, and were characterized by differences in acrosomal length, the presence of a dense coat around the acrosome, the length of the basal body, the amount of the centriole adjunct material, and the diameter of the mitochondrial derivatives. However, the whole group shares a pattern of the posterior sperm region uncommon for insects, in which the axoneme and other flagellar components are running parallel with the nucleus. As a general conclusion, this study has revealed an inconsistency between the sperm structure and the systematics of the group, indicating that the generic concepts within the group do not reflect a natural classification, a statement also shared by molecular studies. 
650 7 |a Ladybird sperm  |2 Elsevier 
650 7 |a Insect sperm ultrastructure  |2 Elsevier 
650 7 |a Coleoptera sperm structure  |2 Elsevier 
700 1 |a Lino-Neto, José  |4 oth 
700 1 |a Dias, Glenda  |4 oth 
700 1 |a Nere, Pedro H.A.  |4 oth 
700 1 |a Mercati, David  |4 oth 
700 1 |a Lupetti, Pietro  |4 oth 
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