scholarly journals Suitability of acoustics as non-lethal deterrents for macropodids: the influence of origin, delivery and anti-predator behaviour

2011 ◽  
Vol 38 (5) ◽  
pp. 408 ◽  
Author(s):  
Daniel Ramp ◽  
Clio Gates Foale ◽  
Erin Roger ◽  
David B. Croft
Keyword(s):  
Species Traits ◽  
Sympatric Species ◽  
Short Term ◽  
Behavioural Responses ◽  
Acoustic Stimuli ◽  
Management Measures ◽  
The Family ◽  
Distress Calls ◽  
In Captivity ◽  
Predator Behaviour

Context Auditory devices used to deter wildlife are a potentially humane and effective way of minimising deleterious interactions with humans and their livelihoods and have been used successfully for many species around the world. Acoustic cues can be used to manipulate anti-predator behaviour, encouraging animals to forage elsewhere. Employing acoustics derived from natural sources to make use of innate behavioural responses has been suggested to outperform novel or artificial sounds; however, anti-predator strategies vary among sympatric species and will influence the utility of acoustic stimuli for deterring wildlife. Aims We aimed to test the interaction between the source of origin (natural or novel) and species traits (anti-predator strategy – grouping behaviour) on the efficacy of using acoustic stimuli to elicit alarm responses for two species in the family Macropodidae commonly associated with browsing on forest plantation seedlings; the red-necked pademelon (Thylogale thetis) and the red-necked wallaby (Macropus rufogriseus banksianus). Methods We tested these factors in captivity using playback experiments of acoustic stimuli and monitored the behavioural responses of subjects. Results Red-necked pademelons exhibited strong responses to bioacoustic and novel stimuli but did not greatly differentiate among them. Short-term habituation to predator calls was detected whereas responsiveness to novel sounds increased. Red-necked wallabies most strongly responded to conspecific distress calls, showing no sign of short-term habituation. Conclusions Results from the present and other studies suggest that bioacoustic deterrents, particularly those utilising natural conspecific sounds, aimed at communicating danger, have the potential to play an important role in non-lethal wildlife management, although that responsiveness varies with the form of anti-predator strategies employed. Implications If alarm responses translate into subjects vacating targeted areas, then there is some potential to implement non-lethal acoustic deterrents for macropodids alongside other management measures aimed at preventing impacts on primary production. Problematically, our experiments showed that without accurate acoustic delivery, particularly of sounds with infrasonic components, the development of effective bioacoustic deterrents may remain stymied.

scholarly journals Short-Term Behavioural Responses of Impalas in Simulated Antipredator and Social Contexts

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e84970 ◽  
Author(s):  
François-René Favreau ◽  
Olivier Pays ◽  
Anne W. Goldizen ◽  
Hervé Fritz
Keyword(s):  
Social Contexts ◽  
Short Term ◽  
Behavioural Responses

Behavioural responses of voles to simulated risk of predation by a native and an alien mustelid: an odour manipulation experiment

2010 ◽  
Vol 37 (4) ◽  
pp. 273 ◽  
Author(s):  
Karen Fey ◽  
Peter B. Banks ◽  
Hannu Ylönen ◽  
Erkki Korpimäki
Keyword(s):  
Baltic Sea ◽  
Predation Risk ◽  
Myodes Glareolus ◽  
The Baltic Sea ◽  
Short Term ◽  
Behavioural Responses ◽  
Alien Predator ◽  
Risk Of Predation ◽  
The Baltic ◽  
The Impact

Context. Potential mammalian prey commonly use the odours of their co-evolved predators to manage their risks of predation. But when the risk comes from an unknown source of predation, odours might not be perceived as dangerous, and anti-predator responses may fail, except possibly if the alien predator is of the same archetype as a native predator. Aims. In the present study we examined anti-predator behavioural responses of voles from the outer archipelagos of the Baltic Sea, south-western Finland, where they have had no resident mammalian predators in recent history. Methods. We investigated responses of field voles (Microtus agrestis) to odours of native least weasels (Mustela nivalis) and a recently invading alien predator, the American mink (Mustela vison), in laboratory. We also studied the short-term responses of free-ranging field voles and bank voles (Myodes glareolus) to simulated predation risk by alien mink on small islands in the outer archipelago of the Baltic Sea. Key results. In the laboratory, voles avoided odour cues of native weasel but not of alien mink. It is possible that the response to mink is a context dependent learned response which could not be induced in the laboratory, whereas the response to weasel is innate. In the field, however, voles reduced activity during their normal peak-activity times at night as a response to simulated alien-mink predation risk. No other shifts in space use or activity in safer microhabitats or denser vegetation were apparent. Conclusions. Voles appeared to recognise alien minks as predators from their odours in the wild. However, reduction in activity is likely to be only a short-term immediate response to mink presence, which is augmented by longer-term strategies of habitat shift. Because alien mink still strongly suppresses vole dynamics despite these anti-predator responses, we suggest that behavioural naiveté may be the primary factor in the impact of an alien predator on native prey. Implications. Prey naiveté has long been considered as the root cause of the devastating impacts of alien predators, whereby native prey simply fail to recognise and respond to the novel predation risk. Our results reveal a more complex form of naiveté whereby native prey appeared to recognise alien predators as a threat but their response is ultimately inadequate. Thus, recognition alone is unlikely to afford protection for native prey from alien-predator impacts. Thus, management strategies that, for example, train prey in recognition of novel threats must induce effective responses if they are expected to succeed.

scholarly journals Haematological reference of snakes: Amazon tree boa (Corallus hortulanus, Linnaeus, 1758) and Burmenese Python (Python bivittatus, Kuhl, 1820) in captive

2018 ◽  
Vol 70 (4) ◽  
pp. 1172-1178
Author(s):  
A.E. Quadrini ◽  
V.C. Garcia ◽  
B.C. Freire ◽  
M.F.M. Martins
Keyword(s):  
Blood Count ◽  
Complete Blood Count ◽  
Leukocyte Count ◽  
Differential Leukocyte Count ◽  
Healthy State ◽  
The Family ◽  
In Captivity ◽  
Clinical Diagnoses ◽  
Maintenance Techniques ◽  
Python Bivittatus

ABSTRACT Hematology has become important for making clinical diagnoses in snakes because maintenance techniques in captivity have been improving and increasing their life expectancy. The emergence of diseases in captivity requires the creation of parameters to understand the species in their healthy state. The possible association between the onset of neoplasia, immunosuppression, and viral infection are also important factors to consider. Thus, hematology is a fundamental tool for observing the responses of animals to diseases and treatments. The present study aims to study hematology between two species of snakes and compare the profiles observed with published results. Blood samples were collected from 16 male and female snakes: seven Corallus hortulanus from the family Boidae and nine Python bivittatus from the family Pythonidae belonging to the Biological Museum of the Butantan Institute, São Paulo, Brazil. Complete blood count results including blood smear, total erythrocyte count, leukocytes, and differential leukocyte count were evaluated. The data obtained in this study could help with the diagnosis, the treatment of snakes in captive conditions and in of nature conservation programs.

scholarly journals MENEJMEN RISIKO DALAM PERFEKTIF ISLAM

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Supriyo Supriyo
Keyword(s):  
Risk Management ◽  
Production System ◽  
Human Life ◽  
Short Term ◽  
Islamic Perspective ◽  
The Family ◽  
The Future ◽  
Short Run ◽  
A Company

Human life with all its activities in order to meet the needs of life always will always faced the possibility of risk either directly or indirectly, can occur in the short term or long term. A possibility of the occurrence or risk had certainly will affect the activity to be done And adversely affect the economy of a family and even a company, if the risks that occur have a vital impact on the family or an organization. Many failures within a company's organization are due to unforeseen risks occurring as for example the company never thinks that a newly established company is still in the short run abruptly because a workforce lacking control in the production system creates a great fire and spends all and has a bad impact For the economy of a family and even a company, if the risks that occur have a vital impact on the family or an organization. Many failures within a company's organization are due to unforeseen risks occurring as for example the company never thinks that a newly established company is still in the short run abruptly because a workforce lacking control in the production system creates a terrible fire and consumes all the company's assets Newly established. Everyone or anyone else would not want the incident to happen and befall themselves and his business in the future. Keywords: Islamic perspective, Risk management

scholarly journals Lalabet Financial Analysis: Study of Islamic Economics at Micro Level

2021 ◽  
Vol 4 (1) ◽  
pp. 233-244
Author(s):  
Ainorrofiqie Ainorrofiqie ◽  
Umrotul Khasanah ◽  
Akhmad Djalaluddin
Keyword(s):  
Financial Management ◽  
Financial Analysis ◽  
Financial Statements ◽  
The Body ◽  
Short Term ◽  
The Family ◽  
Micro Level ◽  
The Impact ◽  
The Village

This research aims to explore the model of financial management tradition Lalabet in the village of Babbalan District Batuan Sumenep. This study is based on the fact that occurred in the community about the implementation of traditions carried out by the heirs to family members who died. Interpretative qualitative research is used and an in-depth understanding of a problem that occurs is emphasized more. Based on the results of this study, the financial management tradition Lalabet can be done based on accounting equations. The accounts contained in the accounting equation is not used in its entirety and are reported as are generally financial statements. In this case, the source of funds in carrying out Lalabet tradition is sourced from personal money, money and donations from the family, money from Muslimat, debt, and money or goods from Lalabet's proceeds. The impact is the onset of debt both short-term and long-term. While the expenditure is in the form of costs in taking care of the body, costs for tahlilan (petto'arean), pa'polo, nyatos, nyataon, nyaebu, mangaji, ngin-tangin, nyalenin mayyid, and ajege makam (kep-sekep).

Deby’s control of Chad looks unlikely to be shaken

2021 ◽  
Keyword(s):  
Vice President ◽  
Short Term ◽  
Content Type ◽  
Parliamentary Elections ◽  
Humanitarian Emergencies ◽  
Border Regions ◽  
The Past ◽  
Security Challenges ◽  
The Family ◽  
Military Posts

Significance The presidential election will take place on April 11 and parliamentary elections are scheduled for October. As the country prepares for the polls, security challenges and humanitarian emergencies are unfolding in various parts of the country, especially in remote and border regions. Impacts The designation of a vice-president could shift balances of power within the family network that dominates top political and military posts. Western powers and other African states are likely to accept even a highly flawed election, as they have in the past. Further protests may occur, but Deby appears less vulnerable in the short-term than Malian President Ibrahim Keita proved in 2020.

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