Stylet ( Vestigial Shell )
نویسندگان
چکیده
5 Sílvia Lourenço, Ana Moreno, Luís Narciso, João Pereira, Rui Rosa, Ángel F. González 6 Centro de Oceanografia, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de 7 Lisboa, Avenida Nossa Senhora do Cabo 939, 2750-374 Cascais, Portugal 8 Departamento do Mar e Recursos Marinhos, Instituto Português do Mar e da Atmosfera, I.P.Avenida de 9 Brasília, 1449-006, Lisboa, Portugal. 10 Instituto de Investigaciones Marinas de Vigo, CSIC, C/Eduardo Cabello, 6. Vigo. E-36208, Spain. 11 12
منابع مشابه
Paratylenchus shenzhenensis n. sp. (Nematoda: Paratylenchinae) from the rhizosphere soil of Anthurium andraeanum in China.
Paratylenchus shenzhenensis n. sp. was collected from the rhizosphere soil of Anthurium andraeanum in Shenzhen, Guangdong Province, China. The new species is characterized by having a female with a small body (249-302 μm), well developed stylet (17-21 μm), rounded head with four submedian lobes and lip-region with a slight depression at the oral area, small post-vulval uterine sac with a few ve...
متن کاملObservations on the Emergence of Heterodera iri from the Egg.
Doncaster and Shepherd (1) reported that hatching of eggs of Heterodera rostochienis Woll. was preceded by larval movement, by purposeful and accurate stylet thrusts which cut a slit at the end of the egg shell, and by forward body thrusts of the larva which forced the slit open and allowed it to escape. We crushed in distilled water 30 cysts of H. iri Mathews found in association with creeping...
متن کاملMetamorphosis in Balanomorphan, Pedunculated, and Parasitic Barnacles: A Video-Based Analysis
Cypris metamorphosis was followed using video microscopy in four species of cirripeds representing the suspension-feeding pedunculated and sessile Thoracica and the parasitic Rhizocephala. Cirripede metamorphosis involves one or more highly complex molts that mark the change from a free cypris larva to an attached suspension feeder (Thoracica) or an endoparasite (Rhizocephala). The cyprids and ...
متن کاملThe effect of dominant vestigial alleles upon vestigial-mediated wing patterning during development of Drosophila melanogaster
The vestigial gene product is required for the completion of wing development in Drosophila melanogaster. In the absence of vestigial gene expression, cells within the larval wing and haltere imaginal discs fail to proliferate normally thus producing adults with severely reduced wings. Of a large number of vestigial mutations that have been characterized, only two are currently known to exist, ...
متن کاملUltrastructure and tubulin immunocytochemistry of the copulatory stylet-like structure in Childia species (Acoela).
One of the main characters used in acoel taxonomy is the male copulatory organ. Despite this, ultrastructural studies of this structure are scarce. We studied the ultrastructure of the copulatory organ in eight species of acoels belonging to the taxon Childia. Members of Childia possess a well-developed conical or cylindrical stylet-like structure composed of needles. Immunogold cytochemistry o...
متن کامل