نتایج جستجو برای: larval stages

تعداد نتایج: 205241  

2003
Javier A. Calcagno Sven Thatje Klaus Anger Gustavo A. Lovrich Antje Kaffenberger

Changes in biomass and elemental composition (dry mass, W; carbon, C; nitrogen, N; hydrogen, H) were studied in the laboratory during complete larval and early juvenile development of the southern stone crab Paralomis granulosa (Jacquinot). At 6 ± 0.5°C; total larval development from hatching to metamorphosis lasted ca. 56 d, comprising 2 demersal zoeal stages and a benthic megalopa, with mean ...

Journal: :Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria 2013
Darci Moraes Barros-Battesti Diego Garcia Ramirez Gabriel Alves Landulfo João Luiz Horácio Faccini Filipe Dantas-Torres Marcelo Bahia Labruna José Manuel Venzal Valeria Castilho Onofrio

Many argasid tick species are known only through their larval descriptions, in which the chaetotaxy, together with other external morphological characteristics, has been used to separate genera and species. However, the illustrations of these features are based on optical microscopy alone and many of these features are not clearly defined. Because of the difficulties in determining the larval a...

Journal: :journal of arthropod-borne diseases 0
ah shiravi department of biology, islamic azad university, damghan branch, iran r mostafavi department of biology, islamic azad university, damghan branch, iran k akbarzadeh department of medical entomology and vector control, school of public health, tehran university of medical sciences, iran ma oshaghi department of medical entomology and vector control, school of public health, tehran university of medical sciences, iran

background: the aim of his study was to determine development time and thermal requirements of three myiasis flies including chrysomya albiceps, lucilia sericata, and sarcophaga sp. methods: rate of development (rod) and accumu­lated degree day ( add) of three important forensic flies in iran, chrysomya albiceps, lucilia sericata, and sarcophaga sp. by rearing individuals under a single constan...

2013
M. A. QUIROGA J. C. REBOREDA

We studied life history traits of Philornis seguyi Garcṍa, 1952 (Diptera: Muscidae) parasitizing house wrens, Troglodytes aedon (Vieillot) (Passeriformes: Troglodytidae), and analyzed sexual differences in the size of larvae, pupae, and adults, as well as in the length of larval and pupal stages and in adult survival. Males were larger than females at the larval, pupal, and adult stages, but th...

2006
C. T. Achuthankutty

This paper deals briefly with a technique developed for the identification of the early stages of veligers of the surfclam Spisula solidissima from the larval stages of other common bivalve species using a combination of DNA probe and restriction fragment length polymorphism (RFLP) analysis. An oli¬ gonucleotide sequence designed from the 18S ribosomal RNA gene (nucleotide position 259-276) pro...

2014
Elliot Scanes Laura M. Parker Wayne A. O’Connor Pauline M. Ross

Ocean acidification is predicted to have severe consequences for calcifying marine organisms especially molluscs. Recent studies, however, have found that molluscs in marine environments with naturally elevated or fluctuating CO2 or with an active, high metabolic rate lifestyle may have a capacity to acclimate and be resilient to exposures of elevated environmental pCO2. The aim of this study w...

2017
John Parkinson James D. Wasmuth Gustavo Salinas Cristiano V. Bizarro Chris Sanford Matthew Berriman Henrique B. Ferreira Arnaldo Zaha Mark L. Blaxter Rick M. Maizels Cecilia Fernández

Background: The cestode Echinococcus granulosus the agent of cystic echinococcosis, a zoonosis affecting humans and domestic animals worldwide is an excellent model for the study of host-parasite cross-talk that interfaces with two mammalian hosts. To develop the molecular analysis of these interactions, we carried out an EST survey of E. granulosus larval stages. We report the salient features...

Journal: :Anais da Academia Brasileira de Ciencias 2014
Fernando L Mantelatto Alvaro L D Reigada Aline C R Gatti José A Cuesta

The genus Callinectes Stimpson, 1860 currently consists of 16 species, six of which are reported in Brazilian coast. In the present study, the first zoeal stages of Callinectes bocourti, C. danae, C. exasperatus, C. ornatus and C. sapidus from Brazil were obtained from ovigerous females. The morphological and meristic characters of all these larval stages are described and illustrated. Those of...

Journal: :Annual review of entomology 2007
Felix L Wäckers Jörg Romeis Paul van Rijn

Among herbivorous insects with a complete metamorphosis the larval and adult stages usually differ considerably in their nutritional requirements and food ecology. Often, feeding on plant structural tissue is restricted to the larval stage, whereas the adult stage feeds primarily or exclusively on plant-provided food supplements such as nectar and pollen. Research on herbivore nutritional ecolo...

2016
Tomáš Vendl Petr Šípek

The third larval instar of Goliathus goliatus (Drury, 1770), Goliathus orientalis Moser, 1909 and Goliathus albosignatus Boheman, 1857 are described and illustrated for the first time and compared with the immature stages of other Cetoniinae. Larval development of Goliathus goliatus is investigated under laboratory conditions, with particular emphasis on food requirements. These results support...

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