scholarly journals A comparative study on the larval characters of some laboratory colonies of Culex pipiens s. l. from southern, eastern and northern Japan

1963 ◽  
Vol 14 (3) ◽  
pp. 143-151
Author(s):  
Tozo Kanda
Keyword(s):  
Comparative Study ◽  
Culex Pipiens ◽  
Laboratory Colonies ◽  
Northern Japan

COMPARATIVE STUDY OF ANTENNAL SENSE ORGANS OF FEMALE CULICINE MOSQUITOES

1970 ◽  
Vol 102 (10) ◽  
pp. 1258-1267 ◽  
Author(s):  
Susan B. McIver
Keyword(s):  
Comparative Study ◽  
Culex Pipiens ◽  
Host Preference ◽  
Distribution Patterns ◽  
Similar Distribution ◽  
Similar Data ◽  
Culex Tarsalis ◽  
Type Number ◽  
Sense Organs ◽  
Culex Fatigans

AbstractThe type, number, and distribution of the antennal sense organs of female Culex territans Walker and Culex restuans (Theo.) were determined and compared to similar data on Culex pipiens L., Culex fatigans Wiedemann, and Culex tarsalis Coquillett. All types of sense organs have similar distribution patterns on the five species, but large differences in number occur. These differences are discussed with regard to the host preference of the mosquitoes.

scholarly journals Innate trypanolytic factors in triatomine hemolymph against Trypanosoma rangeli and T. cruzi: a comparative study in eight Chagas disease vectors

2020 ◽  
Vol 44 (170) ◽  
pp. 88-104
Author(s):  
Yazmin Suárez-Quevedo ◽  
Hamilton Julián Barbosa-Vinasco ◽  
Sneider Alexander Gutiérrez-Garnizo ◽  
Jenny Lorena Olaya-Morales ◽  
Daniel Zabala-González ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Comparative Study ◽  
Chagas Disease ◽  
Lytic Activity ◽  
Limited Information ◽  
Trypanosoma Rangeli ◽  
Chemical Structures ◽  
Lysis Activity ◽  
Triatomine Species ◽  
Laboratory Colonies

There is limited information about the innate immunity of triatomines against Trypanosoma rangeli, an infectious, non-pathogenic human parasite, and T. cruzi, the causative agent of Chagas’ disease. This study aimed at addressing this gap by studying the in vitro trypanolytic hemolymph activity from insects not infected by T. rangeli or T. cruzi. Eight triatomine species were examined including Rhodnius prolixus, R. robustus, R. colombiensis, R. pallescens, R. pictipes, Triatoma dimidiata, T. maculata, and Panstrongylus geniculatus. The hemolymph of R. prolixus and R. robustus laboratory colonies demonstrated strong trypanolytic activity during the first 14 hours of parasite incubation with 81% lysis for the T. rangeli C genotype, 90% for the E genotype, 95% for T. cruzi discrete taxonomic unit (DTU) TcII, 94% for TcV, 96% for TcVI, 94% for Tcbat, and 90% for Tcmarinkellei. No lysis activity was detected 14 or 24 hours after parasite incubation with the hemolymph of insects from R. pictipes R. pallescens, P. geniculatus, and T. maculata colonies. Identical results (absence of lysis) were observed using hemolymph from R. colombiensis and T. dimidiata laboratory colonies and specimens captured in sylvatic environments. The hemolymph lytic activity against recently obtained cultures (95% decrease in live parasite count) and long-term T. cruzi TcII ones (96% decrease) was similar. Lytic activity was similar in hemolymph from R. prolixus nymphs, males and females and insects fed on chicken or mouse blood. This is the first comparative study of the trypanolytic activity of hemolymph from different triatomine species against T. rangeli and T. cruzi genotypes. Although the chemical structures of such lysis factors and the mechanisms determining their expression have not been fully determined, their identification furthers our understanding of triatomines’ innate immunity and their role in Trypanosoma transmission.

Author response for "Laminar distribution of cortical projection neurons to the pulvinar: A comparative study in cats and mice"

2020 ◽  
Author(s):  
Bruno Oliveira Ferreira de Souza ◽  
Éve‐Marie Frigon ◽  
Robert Tremblay‐Laliberté ◽  
Christian Casanova ◽  
Denis Boire
Keyword(s):  
Comparative Study ◽  
Author Response ◽  
Projection Neurons ◽  
Cortical Projection ◽  
Laminar Distribution
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