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 Evolutionary trends in onshore-offshore distribution patterns of mushroom coral species (Scleractinia: Fungiidae)

2012 ◽  
Vol 81 (4) ◽  
pp. 199-221 ◽  
Author(s):  
Bert W. Hoeksema
Keyword(s):  
Related Species ◽  
Coral Species ◽  
Environmental Gradients ◽  
Distribution Patterns ◽  
Similar Distribution ◽  
Closely Related Species ◽  
Species Association ◽  
Incidence Data ◽  
Coral Fauna ◽  
Mushroom Coral

A phylogenetically based comparative analysis of onshore-offshore distribution patterns of mushroom coral species (Scleractinia: Fungiidae) was made to reconstruct an evolutionary scenario for differentiation in fungiid shelf habitats. This phyloecological study integrates data on fungiid distribution patterns along environmental gradients on the Spermonde Shelf, SW Sulawesi, with a recently published phylogeny reconstruction of the Fungiidae. A mushroom coral fauna of 34 species was used to compare their distributions by use of 50-m2 belt quadrats in transects (1) from the mainland to the shelf edge, (2) around reefs with regard to predominant wind directions, and (3) over bathymetrical reef zones. Species association ordinations were made for each of the four shelf zones using both abundance and incidence data to examine whether closely related species cooccurred. Some closely related species or even sister species appeared to show very similar distribution patterns and to coexist in high abundances. These results indicate that there may not be community saturation and competitive exclusion among mushroom corals species, most of which are free-living. In reconstructions of fungiid habitat evolution, offshore reef slopes appear to be original (ancestral), whereas onshore habitats, shallow reef flats, and deep sandy reef bases seem to be derived. The latter is in contrast with an earlier hypothesis, in which deep sandy substrates were considered ancestral mushroom coral habitats.

scholarly journals Population Structure and Distribution Patterns of the Sibling Mosquito Species Culex pipiens and Culex torrentium (Diptera: Culicidae) Reveal Different Evolutionary Paths

PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e102158 ◽  
Author(s):  
Antje Werblow ◽  
Sven Klimpel ◽  
Sarah Bolius ◽  
Adriaan W. C. Dorresteijn ◽  
Jan Sauer ◽  
...  
Keyword(s):  
Population Structure ◽  
Culex Pipiens ◽  
Mosquito Species ◽  
Distribution Patterns ◽  
Evolutionary Paths

Economic Lirowth and Human Rights in Brazil: The First Nine Years of Military Tutelage

1973 ◽  
Vol 67 (5) ◽  
pp. 208-213
Author(s):  
Brady Tyson
Keyword(s):  
Distribution Patterns ◽  
Police Brutality ◽  
List Type ◽  
Type Number ◽  
Political Democracy ◽  
The Past ◽  
The People ◽  
The Military ◽  
The City

This is an interim, summary and provisional judgment on the Brazilian experiment of the past nine years, that is, since the military took power on April 1, 1964. To try to give an impression of the results of the interaction among the values of political democracy, equality, and economic growth, and the present levels compared with those of 1964 as well as what appear to be the trends. I have chosen six “indicators”:(1)the autonomy and integrity of the legal system;(2)torture and police brutality;(3)freedom of the mass media;(4)income distribution patterns;(5)education distribution patterns; and(6)the quality of life of the people of the city of greater São Paulo.

Localisation of two classes of acetylcholine receptor-like molecules in sperms of different animal species

Zygote ◽  
1995 ◽  
Vol 3 (3) ◽  
pp. 207-217 ◽  
Author(s):  
B. Baccetti ◽  
A.G. Burrini ◽  
G. Collodel ◽  
C. Falugi ◽  
E. Moretti ◽  
...  
Keyword(s):  
Nicotinic Receptor ◽  
Nicotinic Receptors ◽  
Animal Species ◽  
Distribution Patterns ◽  
Sperm Head ◽  
Similar Distribution ◽  
Vertebrate Species ◽  
Immunogold Staining ◽  
Specific Antibodies ◽  
Transduction Mechanisms

SummaryThe distribution of different classes of acetylcholine (ACh) receptor-like molecules in sperms of different invertebrate and vertebrate species is described. ACh receptor molecules belong to one of two classes: muscarinic receptors (mAChRs), associated with signal transduction mechanisms in the inner domain of the cell, and nicotinic receptors (nAChRs), capable of opening Na+ channels when activated by the ligand. Molecules immunologically related to mAChRs and to ACh can be identified by specific antibodies, and revealed by immunofluorescent or immunogold staining; the nicotinic receptor-like molecules are localised as curare-sensitive affinity sites for α-bungarotoxin. In all species studied, both classes of receptors were found, with a similar distribution. Muscarinic-like molecules were found mainly in the sperm head regions of most species; such a localisation may be correlated to a function in sperm–egg interaction, for instance in the regulation of the block to polyspermy. Nicotinic-like molecules are present mainly in the tail and in the post-acrosomal region of most animals, thus confirming their function in the regulation of sperm propulsion, but are also present at the acrosomal region of most species. The distribution patterns of the different classes of molecules indicate that both may be in sperm–egg interactions, in addition to their known function in the regulation of sperm propulsion.

Field Tests of Avian Host Preference of Culex Tarsalis COQ. 1

1957 ◽  
Vol 6 (2) ◽  
pp. 294-303 ◽  
Author(s):  
Richard P. Dow ◽  
W. C. Reeves ◽  
R. E. Bellamy
Keyword(s):  
Host Preference ◽  
Field Tests ◽  
Avian Host ◽  
Culex Tarsalis

BLOOD-FEEDING IN OVERWINTERING CULEX TARSALIS (DIPTERA: CULICIDAE) FROM MANITOBA

1982 ◽  
Vol 114 (1) ◽  
pp. 85-86 ◽  
Author(s):  
P. W. Arntfield ◽  
W. J. Gallaway ◽  
R. A. Brust
Keyword(s):  
Low Temperature ◽  
Blood Meal ◽  
Culex Pipiens ◽  
Blood Feeding ◽  
Culex Tarsalis ◽  
Culex Restuans ◽  
Diapause Development

Diapause development in Culex tarsalis Coquillett has been characterized by reduced blood-feeding to complete termination of ovariole development at or before stage IIa (Bennington et al. 1958; Schaefer and Washino 1970; Schaefer et al. 1971; Bellamy and Corbet 1973; Mitchell 1979). The role that diapausing Culex species have in overwintering arboviruses has been examined (Eldridge 1966, 1968; Eldridge et al. 1972; Reeves 1974; Eldridge and Bailey 1979; Mitchell 1979). Gonotrophic dissociation and its implications for survival of the vector and virus has been reviewed by Washino (1977). Eldridge (1966) indicated gonotrophic dissociation was possible in Culex pipiens L. incubated at low temperature and short daylength and later reported failure of ovarioles of prehibernating C. pipiens to mature following a blood meal (Eldridge and Bailey 1979). Eldridge et al. (1972) reported that Culex restuans Theobald exhibited gonotrophic dissociation in response to conditioning by short daylength and low temperature. Mitchell (1981) has reported blood-feeding and gonotrophic dissociation in a significant portion of diapausing Culex tarsalis from Colorado, when females were kept at 15°C and at short daylength conditions.

Distribution patterns in the genus Peltigera Willd

2003 ◽  
Vol 35 (4) ◽  
pp. 301-323 ◽  
Author(s):  
Isabel Martínez ◽  
Ana Rosa Burgaz ◽  
Orvo Vitikainen ◽  
Adrián Escudero
Keyword(s):  
Southern Hemisphere ◽  
Hierarchical Clustering ◽  
Endemic Species ◽  
Distribution Patterns ◽  
Similar Distribution ◽  
Number Of Species ◽  
Biogeographic Provinces ◽  
Floristic Elements ◽  
Clustering Approach ◽  
Holarctic Species

AbstractThe distribution of sixty-six Peltigera species in 230 biogeographic provinces or 40 regions are presented. A hierarchical clustering approach, used to identify clusters of species with similar distribution patterns (floristic elements), resolved four groups made up of Neotropical, Southern Hemisphere, Antarctic and mainly Holarctic species. The Holarctic Kingdom is species rich with the highest number of Peltigera species and also the highest number of endemic species; the Australian and Cape Kingdoms have the lowest number of species and endemics. The species rich provinces are briefly discussed.

Epicuticular Waxes from Leaves and Stems of Jojoba (Simmondsia chinensis [Link] Schneider)

1983 ◽  
Vol 38 (9-10) ◽  
pp. 679-682
Author(s):  
Paul-Gerhard Gülz ◽  
Claudia Eich
Keyword(s):  
Distribution Patterns ◽  
Quantitative Composition ◽  
Similar Distribution ◽  
Epicuticular Waxes ◽  
Cuticular Waxes ◽  
Aerial Parts ◽  
Branched Alkanes ◽  
Organ Specific ◽  
Seed Coats ◽  
Long Chain

Abstract Epicuticular waxes were extracted with chloroform from air dried Jojoba leaves and stems. These cuticular waxes consisted of homologues of n-alkanes, branched alkanes, alkenes, wax esters, aldehydes, acetates, esters, free long chain fatty acids and alcohols. Both leaves and stems showed the same qualitative and quantitative composition with similar distribution patterns. Very long chain and in most cases saturated compounds are dominating. The composition of epicuticular waxes from Jojoba leaves and stems is quite different from that of Jojoba pericarp and seed coats and demonstrates an organ specific wax composition of different aerial parts of this plant.

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