Helminths from the digestive tracts of mallards and pintails in the Delta Marsh, Manitoba

1972 ◽  
Vol 50 (5) ◽  
pp. 633-637 ◽  
Author(s):  
V. F. J. Crichton ◽  
H. E. Welch
Keyword(s):  
Anas Platyrhynchos ◽  
Female Adult ◽  
Anas Acuta ◽  
Male And Female ◽  
Delta Marsh ◽  
Adult Females

At least five species of cestodes, seven of trematodes, seven of nematodes, and two of acanthocephalans were found in Anas platyrhynchos platyrhynchos (L.) and Anas acuta (L.). Male and female adult and juvenile mallards harbored greater numbers of worms than did pintails. Adult females of both species had greater numbers of helminths per bird than did males. In addition, juvenile birds harbored greater numbers of parasites than did adults. The parasitic faunas of the two surface-feeding ducks, mallard and pintail, differed quantitatively despite their common habits. These differences were not a reflection of different diets but the suspicion is that mallards are more susceptible to parasitism than pintails. No serious cases of helminthiasis were found in the 101 mallards and 101 pintails examined in 1967 and 1968.

Chemotherapy of Filariasis -On the Search of New Agents Effective on the Reproductive System of Female Adult Worms

1990 ◽  
Vol 45 (11-12) ◽  
pp. 1210-1214 ◽  
Author(s):  
Jujhar Singh ◽  
M. Seth ◽  
Nigar Fatma ◽  
Satyavan Sharma ◽  
A. P. Bhaduri ◽  
...  
Keyword(s):  
Adult Female ◽  
Reproductive System ◽  
Female Reproduction ◽  
Female Adult ◽  
New Agents ◽  
Male And Female ◽  
Design And Synthesis ◽  
Adult Females ◽  
The Future ◽  
Cotton Rats

The design and synthesis of a series of alkyl 5(6)-substituted benzimidazole-2-carbamates (1-13), 7-chloro-4-(4-substituted phenyl)aminoquinolines (14-16), l,2-dim ethyl-3-m ethoxycarbonyl- 4,5-disubstituted pyrroles (17-19) and some compounds belonging to the class pimelonitrile (20), dihydroquinoline (21), pyridine (22), pyridoquinoline (23) and tetrahydropyrimidine (24) have been carried out as possible antifilarial agents. All these compounds have been evaluated for their activity against male and female adult worms of Litomosoides carinii in cotton rats. The effect of these compounds was also observed on the reproductive system (condition of developing microfilariae and their release from uterus) of adult female worms. In this study, three types of compounds were discovered: (a) those which showed activity on both the male and female adult worms and also had sterilizing effects on surviving adult females (1 -3 , 6 - 9 , 13, 19), (b) those which only sterilized the adult females (14-16 , 21, 24), and (c) those which had no effect on female reproduction but killed only adult worms (4, 5, 11, 12, 17,18, 20, 22, 23). This tends to open up a new avenue in the chemotherapy of filariasis and the future scope of work on chemosterilization of adult females has been discussed.

The impact of maternal protein restriction during perinatal life on the response to a septic insult in adult rats

2020 ◽  
pp. 1-8
Author(s):  
Reza Khazaee ◽  
Anastasiya Vinokurtseva ◽  
Lynda A. McCaig ◽  
Cory Yamashita ◽  
Daniel B. Hardy ◽  
...  
Keyword(s):  
Control Diet ◽  
Protein Restriction ◽  
Saline Control ◽  
Female Adult ◽  
Adult Rats ◽  
Male And Female ◽  
Maternal Protein Restriction ◽  
And Control ◽  
The Impact ◽  
Septic Insult

Abstract Although abundant evidence exists that adverse events during pregnancy lead to chronic conditions, there is limited information on the impact of acute insults such as sepsis. This study tested the hypothesis that impaired fetal development leads to altered organ responses to a septic insult in both male and female adult offspring. Fetal growth restricted (FGR) rats were generated using a maternal protein-restricted diet. Male and female FGR and control diet rats were housed until 150–160 d of age when they were exposed either a saline (control) or a fecal slurry intraperitoneal (Sepsis) injection. After 6 h, livers and lungs were analyzed for inflammation and, additionally, the amounts and function of pulmonary surfactant were measured. The results showed increases in the steady-state mRNA levels of inflammatory cytokines in the liver in response to the septic insult in both males and females; these responses were not different between FGR and control diet groups. In the lungs, cytokines were not detectable in any of the experimental groups. A significant decrease in the relative amount of surfactant was observed in male FGR offspring, but this was not observed in control males or in female animals. Overall, it is concluded that FGR induced by maternal protein restriction does not impact liver and lung inflammatory response to sepsis in either male or female adult rats. An altered septic response in male FGR offspring with respect to surfactant may imply a contribution to lung dysfunction.

Social experience influences preferences in black ducks and mallards

1989 ◽  
Vol 67 (6) ◽  
pp. 1434-1438 ◽  
Author(s):  
Lynn M. Brodsky ◽  
C. Davison Ankney ◽  
Darrell G. Dennis
Keyword(s):  
Social Preferences ◽  
Anas Platyrhynchos ◽  
Social Experience ◽  
The Other ◽  
Captive Population ◽  
Male And Female ◽  
Potential Mate ◽  
The Social ◽  
Opposite Sex ◽  
Males And Females

The influence of social experience on the preferences for a potential mate in a captive population of black ducks, Anas rubripes, and mallards, Anas platyrhynchos, was examined. Birds were reared from hatching with conspecifics (i.e., female black ducks with male black ducks, female mallards with male mallards), or were cross-fostered with the other species (i.e., female black ducks with male mallards, female mallards with male black ducks). Preferences of individuals were tested in a chamber containing caged black ducks and mallards of the opposite sex. In over 90% (100/109) of the trials, males and females preferred the species that they were raised with since hatching, whether they were of the same species or not. These results demonstrate that social experience influences the social preferences of male and female black ducks and mallards.

Effect of saline drinking water on the size and water content of the gut and other organs of male and female mallards

2002 ◽  
Vol 80 (1) ◽  
pp. 70-76 ◽  
Author(s):  
M R Hughes ◽  
D C Bennett ◽  
T M Sullivan
Keyword(s):  
Drinking Water ◽  
Water Content ◽  
Water Transport ◽  
Anas Platyrhynchos ◽  
Salt Glands ◽  
Male And Female ◽  
Organ Mass ◽  
Hind Gut

Ducks absorb imbibed Na+ and water in the anterior gut and reabsorb Na+ and water from urine refluxed into the hind gut. In Mallards (Anas platyrhynchos) this process is sexually disparate: males reflux and reabsorb more water, mainly in the ceca. We examined the effect of saline acclimation on the size of Mallard organs, especially the gut and other osmoregulatory organs (kidneys, salt glands) in both sexes. We tested and accept two hypotheses: (1) saline increases the mass of the Mallard hind gut and other osmoregulatory organs and (2) saline has a greater effect on the organs of males. Drinking saline did not affect the mass of body, kidney, heart, or liver, but increased the mass of the salt glands, ileum, and ceca. Increases in organ mass were greater in males than in females. Saline acclimation increased the length of the jejunum only in males and decreased the length of the esophagus and the length and mass of the proventriculus only in females. Our data suggest that the upper and lower gut segments may play somewhat different roles in ion and water transport in the two sexes.

scholarly journals Aortic depressor nerve morphometry in male and female adult spontaneously hypertensive rats.

2013 ◽  
Vol 27 (S1) ◽  
Author(s):  
Milena Menezes Amorim ◽  
Jaci Airton Castania ◽  
Helio Cesar Salgado ◽  
Valéria Paula Sassoli Fazan
Keyword(s):  
Spontaneously Hypertensive Rats ◽  
Hypertensive Rats ◽  
Female Adult ◽  
Male And Female ◽  
Spontaneously Hypertensive ◽  
Aortic Depressor Nerve ◽  
Nerve Morphometry

258 Comparing Post-hospitalization Global Health Scale Assessments in Male and Female Adult Burn Patients for Quality of Life

2018 ◽  
Vol 39 (suppl_1) ◽  
pp. S96-S96
Author(s):  
N Alver ◽  
K Koetsier ◽  
G Carrougher ◽  
L Muffley ◽  
N Gibran
Keyword(s):  
Quality Of Life ◽  
Global Health ◽  
Burn Patients ◽  
Female Adult ◽  
Male And Female

Description of a new species of the genus Paraedes (Diptera: Culicidae) in Assam, India

Zootaxa ◽  
2019 ◽  
Vol 4691 (3) ◽  
pp. 286-292
Author(s):  
R. NATARAJAN
Keyword(s):  
New Species ◽  
Adult Male ◽  
Male Genitalia ◽  
Male And Female ◽  
Northeastern India ◽  
Adult Females ◽  
A New Species

A new species, Paraedes jambulingami, is described from Assam, northeastern India. The adult male and female are described in detail and an illustration of the male is provided. This species is easily distinguished from all known species of the genus Paraedes by the presence of broad silvery or golden scales on the paratergite and the outer arm of the basal mesal lobe of the male genitalia bearing a long, flattened blade-like seta. Dichotomous keys are provided for the identification of the adult females and males of the five species of the genus that are known to occur in India. 

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