Comparison of Horn Growth in Captive and Free-Ranging Dall's Rams

1997 ◽  
Vol 61 (4) ◽  
pp. 1154 ◽  
Author(s):  
Manfred Hoefs ◽  
Uli Nowlan
Keyword(s):  
Horn Growth ◽  
Free Ranging

scholarly journals Direct and indirect causal effects of heterozygosity on fitness-related traits in Alpine ibex

2015 ◽  
Vol 282 (1798) ◽  
pp. 20141873 ◽  
Author(s):  
Alice Brambilla ◽  
Iris Biebach ◽  
Bruno Bassano ◽  
Giuseppe Bogliani ◽  
Achaz von Hardenberg
Keyword(s):  
Path Analysis ◽  
Body Mass ◽  
Causal Effects ◽  
Parasite Resistance ◽  
Wild Populations ◽  
Capra Ibex ◽  
Alpine Ibex ◽  
Horn Growth ◽  
Nematode Eggs ◽  
Free Ranging

Heterozygosity–fitness correlations (HFCs) are a useful tool to investigate the effects of inbreeding in wild populations, but are not informative in distinguishing between direct and indirect effects of heterozygosity on fitness-related traits. We tested HFCs in male Alpine ibex ( Capra ibex ) in a free-ranging population (which suffered a severe bottleneck at the end of the eighteenth century) and used confirmatory path analysis to disentangle the causal relationships between heterozygosity and fitness-related traits. We tested HFCs in 149 male individuals born between 1985 and 2009. We found that standardized multi-locus heterozygosity (MLH), calculated from 37 microsatellite loci, was related to body mass and horn growth, which are known to be important fitness-related traits, and to faecal egg counts (FECs) of nematode eggs, a proxy of parasite resistance. Then, using confirmatory path analysis, we were able to show that the effect of MLH on horn growth was not direct but mediated by body mass and FEC. HFCs do not necessarily imply direct genetic effects on fitness-related traits, which instead can be mediated by other traits in complex and unexpected ways.

scholarly journals Horn growth rates of free-ranging white and black rhinoceros

Koedoe ◽  
1991 ◽  
Vol 34 (2) ◽  
Author(s):  
D.J. Pienaar ◽  
A.J. Hall-Martin ◽  
P.M. Hitchins
Keyword(s):  
Growth Rates ◽  
Black Rhinoceros ◽  
Horn Growth ◽  
Free Ranging ◽  
Effect Of Age

The intrinsic and observed anterior hom growth of white and black rhinoceroses is discussed. The effect of age and hom rubbing on hom growth is explained. Species and sex related differences in hom size and mass are investigated.

Lateralization in trunk and forefoot movements in a population of free-ranging Asian elephants (Elephas maximus).

2015 ◽  
Vol 129 (4) ◽  
pp. 377-387 ◽  
Author(s):  
P. Keerthipriya ◽  
Rachna Tewari ◽  
T. N. C. Vidya
Keyword(s):  
Elephas Maximus ◽  
Asian Elephants ◽  
Free Ranging

Investigation of duck plague virus in hoar areas of Bangladesh

2020 ◽  
Vol 26 (1-2) ◽  
pp. 73-78
Author(s):  
A Hossen ◽  
MH Rahman ◽  
MZ Ali ◽  
MA Yousuf ◽  
MZ Hassan ◽  
...  
Keyword(s):  
Cytopathic Effect ◽  
Clinical Sample ◽  
Chorioallantoic Membrane ◽  
Clinical Samples ◽  
Isolation And Identification ◽  
Duck Plague Virus ◽  
Pcr Method ◽  
Polymerase Chain ◽  
The Individual ◽  
Free Ranging

Duck plague (DP) is the most important infectious disease of geese, ducks and free-ranging water birds. The present study was conducted to determine the prevalence of duck plague virus followed by isolation and identification. For these purposes, a total of 155 cloacal swabs samples were collected randomly from duck of different haor areas of Bangladesh including 45 (41 surveillance and 4 clinical) samples from Netrokona; 42 (40 surveillance and 2 clinical) samples from Kishoregonj; 30 samples from Brahmanbaria and 38 samples from Sunamganj. The samples were processed and pooled (1:5 ratio) for initial screening of target polymerase gene of duck plague virus by polymerase chain reaction (PCR) method. All the samples of a positive pool were then tested individually for identifying the individual positive samples. The result showed that out of 155 samples, 41 (26.45%) were found positive in which 17 were from Netrokona, where 15 (36.58%) were from surveillance samples and 2 (50%) were from clinical sample; 16 were from Kishoregonj, where 14 (35%) were from surveillance samples and 2 (100%) were from clinical sample; 2 (6.6%) were from Brahmanbaria and 5 (13.15%) were from Sunamganj. These positive samples were inoculated into 9-10 days embryonated duck eggs (EDE) through chorioallantoic membrane (CAM) route for the isolation of virus. The EDE died earlier was also chilled, and in a similar way, the CAMs were collected and again performed PCR for id entification of virus. Out of 41 PCR positive samples, 26 samples were isolated and reconfirmed by PCR. Subsequently, DPV was isolated in primary duck embryo fibroblasts cell culture and confirmed by observing cytopathic effect (CPE). Bang. J. Livs. Res. Vol. 26 (1&2), 2019: P. 73-78

Clinical signs in free-ranging Guiana dolphins Sotalia guianensis during a morbillivirus epidemic: case study in Sepetiba Bay, Brazil

2019 ◽  
Vol 133 (3) ◽  
pp. 175-180 ◽  
Author(s):  
L Flach ◽  
MB Alonso ◽  
T Marinho ◽  
K Van Waerebeek ◽  
MF Van Bressem
Keyword(s):  
Clinical Signs ◽  
Sepetiba Bay ◽  
Sotalia Guianensis ◽  
Free Ranging

Pulmonary hair embolism in a rescued free-ranging Eurasian otter Lutra lutra in Kinmen, Taiwan

2020 ◽  
Vol 142 ◽  
pp. 55-61
Author(s):  
WT Li ◽  
YL Chiang ◽  
TY Chen ◽  
CL Lai
Keyword(s):  
Foreign Body ◽  
Traumatic Injury ◽  
Lung Parenchyma ◽  
Giant Cells ◽  
Hair Shaft ◽  
Lutra Lutra ◽  
Lung Lobe ◽  
Eurasian Otter ◽  
Foreign Body Giant Cells ◽  
Free Ranging

Eurasian otters Lutra lutra are listed as Near Threatened on the IUCN Red List and are imperiled by habitat loss, water pollution, and poaching. Harassment and attacks by stray animals are also recognized threats to the health of wild Eurasian otters. Pulmonary hair embolism is a possible complication in animals with deep traumatic injury, but to date no cases have been reported in wildlife. A free-ranging, adult male Eurasian otter was rescued due to severe emaciation and multiple bite wounds. The otter died 3 d after rescue and was necropsied. Grossly, a 1.5 × 1.5 × 1.5 cm firm nodule was observed in the left cranial lung lobe. Histologically, a fragment of hair shaft surrounded by multinucleated foreign body giant cells was observed in a medium-sized vein, and extensive eosinophilic infiltration was noted in the adjacent vascular wall and lung parenchyma. Based on the gross and histological findings, the pulmonary lesion was consistent with eosinophilic pneumonia and vasculitis induced by hair embolism. The presence of well-formed multinucleated foreign body giant cells and eosinophils may imply a late stage of foreign body reaction, and thus the presumptive source of hair embolism is an animal bite. This is the first report of pulmonary hair embolism associated with animal bite in a rescued free-ranging Eurasian otter.

Pyogranulomatous obliterative laryngotracheitis by Rhizopus arrhizus (syn. R. oryzae) in a free-ranging Atlantic spotted dolphin Stenella frontalis

2018 ◽  
Vol 130 (2) ◽  
pp. 153-158
Author(s):  
A Cerezo ◽  
O Quesada-Canales ◽  
E Sierra ◽  
J Díaz-Delgado ◽  
A Fernández ◽  
...  
Keyword(s):  
Rhizopus Arrhizus ◽  
Stenella Frontalis ◽  
Spotted Dolphin ◽  
Free Ranging
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