National Repository of Grey Literature 23 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Review of present knowledge of the external male and female genitalia in Pyrrhocoroidea (Heteroptera)
Mazáčková, Nikola ; Kment, Petr (advisor) ; Baňař, Petr (referee)
Superfamily Pyrrhocoroidea with its about 670 species in 71 genera is one of the smaller groups within the true bugs (Hemiptera: Heteroptera: Pentatomomorpha). The common characteristics for these bugs are aposematic coloration and absence of ocelli. Most of the species are phytophagous and some are of economic importance as cotton stainers. The superfamily is further subdivided into two families, Pyrrhocoridae and Largidae, whose phylogenetic relatioships have been a subject of only few studies so far. To help resolve this problem, both molecular and morphological phylogenetic studies are needed. Among the morphological characters of importance are external genitalia of both sexes. This thesis gives a short overview of the current phylogeny of Pyrrhocoroidea. Its main focus is on the morphology of external male and female genitalia, which is summarized and characterized for each genus, and points out some essential differences between the taxa. A table uniting terms used for the particular structures of genitalia by different authors is included.
Condition of dorsoabdominal scent glands in adults of the true bugs from the taxon Pentatomomorpha (Heteroptera)
Křížková, Petra ; Vilímová, Jitka (advisor) ; Kment, Petr (referee)
Existence of larval dorsoabdominal scent glands (DAGs) together with occurence of adult metathoracic scent glands is one of the important autapomorphic characters of taxon Heteroptera within taxon Insecta. DAGs can persist until adults in some species of this taxon. The persistence of DAGs were proved also in members of infraorder Pentatomomorpha. Targets of this thesis are: collect the knowledge about persistent adult DAGs in selected representative members of important families of taxon Pentatomomorpha; study and compare the condition of the DAGs in the oldest larval instars and adults; clarify the significance of existence the openings of conducting ductules of proper glandular units in reservoir intima of DAGs in study of the persistence of these glands. For study were used stereomicroscope, light and scanning electron microscope. Key words: Pentatomomorpha, Heteroptera, dorsoabdominal scent glands, openings of conducting ductules of glandular units, larvae of 5th instar, persistence in adults, persistence patterns, light microscope, scanning electron microscope
Scent glands of true bugs (Heteroptera) and their pattern in micropterous bed bug Cimex lectularius (Cimicidae)
Wiesnerová, Markéta ; Vilímová, Jitka (advisor) ; Kment, Petr (referee)
Chemical communication is considered to be very common type of communication within the insects. Taxon true bugs, the suborder Heteroptera (Insecta: Hemiptera) is well known concerning this type of communication. It is based on a secretion of glands from which the most important are dorsoabdominal scent glands (DAGs) of nymphs and metathoracic scent glands (MTGs) of adults. The present study includes a summary of the knowledge about heteropteran scent glands, including the glands in micropterous bed bug, Cimex lectularius (Linnaeus, 1758) (Cimicidae). Also information about chemical composition and function of the secretion is included. Key words: Heteroptera, DAGs, MTGs, scent glands, bed bug Cimex lectularius, composition of secretion
Condition of the larval scent glands in adults of the Heteroptera infraorders
Křížková, Petra ; Vilímová, Jitka (advisor) ; Kment, Petr (referee)
The Heteroptera scent glands system is formed by larval dorso-abdominal glands (= DAGs) and adult metathoracic glands ( = MTGs). The present study deals with a summary about occurrence of DAGs which are functional not only in larval but also in adult bugs, either proved or very likely. The part of general characteristics includes information about morphology, histology and functions of DAGs. The systematic review of published cases of DAGs' persitence in the adult stage represents the main part of the study. Recapitulations about possible positions of adult persistent DAGs and the characters used to prove gland functionality conclude the study. Based on the list of persistent adult DAGs, it is evident that they can be functional more often than was supposed. The DAGs functionality within heteropteran adults seems to be relatively widespread phenomenon, particularly in regards to a life in terestrial environment.
Comparative morphology of structures associated with metathoracic scent glands in Heteroptera
Kment, Petr ; Vilímová, Jitka (advisor) ; Papáček, Miroslav (referee) ; Pluot-Sigwalt, Dominique (referee)
In my thesis, I studied the extemal structuresassociatedwith the metathoracicscent glands tn Heteroptera, partícularly in the superfamily Pentatomoidea' I focused on i) a review of terminology used for description oťmacrosculptureand microsculpture ofthese structures;ii) their morphology and structural diversity in partícularfamilies of Pentatomoidea;and iii) an attempt to homologize and polarize these structures and test their potential use for a phylogenetic hypothesis in Pentatomoidea. The followíng main terms are selected for description of the macrosculpture(thoracic Scent efferentsystem (intemal and extemal),valvular apparatus,intemal onfice, vestibule,vestíbular scar, ostiole, periostiolar depression,peritreme,auricle, spout, groove, rug4 disc, pentremal lobes, evaporatorium,and gyrification) and microsculpture(mycoid microsculpture,mushroom body, cap, stem, bridge, alveole, trabeculae,and peritremal microsculpture).These terms are defined,andan extensivelist ofsynonyms for eachofthem is compiled. The structures of the extemal scent efferent system are described for all families of the Pentatomoídea'The following conditions of the extemal scent efferent system are considered plesiomorphic: vestibular scar developed; ostiole situated between mesoacetabulum and metacetabulum,large,round or oval,...
Scent glands of true bugs (Heteroptera) and their pattern in micropterous bed bug Cimex lectularius (Cimicidae)
Wiesnerová, Markéta ; Vilímová, Jitka (advisor) ; Kment, Petr (referee)
Chemical communication is considered to be very common type of communication within the insects. Taxon true bugs, the suborder Heteroptera (Insecta: Hemiptera) is well known concerning this type of communication. It is based on a secretion of glands from which the most important are dorsoabdominal scent glands (DAGs) of nymphs and metathoracic scent glands (MTGs) of adults. The present study includes a summary of the knowledge about heteropteran scent glands, including the glands in micropterous bed bug, Cimex lectularius (Linnaeus, 1758) (Cimicidae). Also information about chemical composition and function of the secretion is included. Key words: Heteroptera, DAGs, MTGs, scent glands, bed bug Cimex lectularius, composition of secretion
Feeding ecology of freshwater Heteroptera (Nepomorpha)
Šretrová, Martina ; Sacherová, Veronika (advisor) ; Kment, Petr (referee)
This bachelor thesis focuses on the aquatic Nepomorpha living in freshwater, especially on the most common representatives from families, which we can find in the Czech Republic. The main theme of this work is the mapping of the feeding ecology of water-bugs. Various feeding strategies can be observed, such as phytophagy, carnivory and omnivory. The most important strategy used by most water-bugs is predation. This behavior is related to morphological adaptations, such as modifications of the mouthparts and forelegs. Ways of obtaining and processing prey are described in detail. A special chapter is dedicated to the Corixidae family, which differs morphologically. Also the importance of predatory water bugs in the ecosystem is discussed here.
Feeding ecology of freshwater Heteroptera (Nepomorpha)
Šretrová, Martina ; Sacherová, Veronika (advisor) ; Kment, Petr (referee)
This bachelor thesis focuses on the aquatic Nepomorpha living in freshwater, especially on the most common representatives from families, which we can find in the Czech Republic. The main theme of this work is the mapping of the feeding ecology of water-bugs. Various feeding strategies can be observed, such as phytophagy, carnivory and omnivory. The most important strategy used by most water-bugs is predation. This behavior is related to morphological adaptations, such as modifications of the mouthparts and forelegs. Ways of obtaining and processing prey are described in detail and the influence of predators on their prey is discussed. A special chapter is dedicated to the Corixidae family, which differs morphologically and ecologically from other families.
Comparative morphology of structures associated with metathoracic scent glands in Heteroptera
Kment, Petr ; Vilímová, Jitka (advisor) ; Papáček, Miroslav (referee) ; Pluot-Sigwalt, Dominique (referee)
In my thesis, I studied the extemal structuresassociatedwith the metathoracicscent glands tn Heteroptera, partícularly in the superfamily Pentatomoidea' I focused on i) a review of terminology used for description oťmacrosculptureand microsculpture ofthese structures;ii) their morphology and structural diversity in partícularfamilies of Pentatomoidea;and iii) an attempt to homologize and polarize these structures and test their potential use for a phylogenetic hypothesis in Pentatomoidea. The followíng main terms are selected for description of the macrosculpture(thoracic Scent efferentsystem (intemal and extemal),valvular apparatus,intemal onfice, vestibule,vestíbular scar, ostiole, periostiolar depression,peritreme,auricle, spout, groove, rug4 disc, pentremal lobes, evaporatorium,and gyrification) and microsculpture(mycoid microsculpture,mushroom body, cap, stem, bridge, alveole, trabeculae,and peritremal microsculpture).These terms are defined,andan extensivelist ofsynonyms for eachofthem is compiled. The structures of the extemal scent efferent system are described for all families of the Pentatomoídea'The following conditions of the extemal scent efferent system are considered plesiomorphic: vestibular scar developed; ostiole situated between mesoacetabulum and metacetabulum,large,round or oval,...
Condition of dorsoabdominal scent glands in adults of the true bugs from the taxon Pentatomomorpha (Heteroptera)
Křížková, Petra ; Vilímová, Jitka (advisor) ; Kment, Petr (referee)
Existence of larval dorsoabdominal scent glands (DAGs) together with occurence of adult metathoracic scent glands is one of the important autapomorphic characters of taxon Heteroptera within taxon Insecta. DAGs can persist until adults in some species of this taxon. The persistence of DAGs were proved also in members of infraorder Pentatomomorpha. Targets of this thesis are: collect the knowledge about persistent adult DAGs in selected representative members of important families of taxon Pentatomomorpha; study and compare the condition of the DAGs in the oldest larval instars and adults; clarify the significance of existence the openings of conducting ductules of proper glandular units in reservoir intima of DAGs in study of the persistence of these glands. For study were used stereomicroscope, light and scanning electron microscope. Key words: Pentatomomorpha, Heteroptera, dorsoabdominal scent glands, openings of conducting ductules of glandular units, larvae of 5th instar, persistence in adults, persistence patterns, light microscope, scanning electron microscope

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