Exploitation Of Wildlife Research Articles

Effect of starvation on survival and biochemical profile of newborn juvenile lined seahorses,Hippocampus erectus(Perry, 1810)

This study assessed the effect of starvation on survival and nutritional status of newborn juveniles H. erectus (<10 days) to optimize rearing protocols, thereby helping to reduce wildlife exploitation. Maximum starvation time (MST) was estimated through the survival of juveniles continuously starved from birth. Resistance to starvation and the effect of food re-introduction after 1, 2, 4 and 6 days of starvation on survival and metabolite concentrations (total proteins, total lipids, acylglycerides, cholesterol, glucose) were also determined. Survival amongst continuously starved animals decreased from 6.6 ± 0.5 to 0% from days 9 to 10 of starvation. Seahorses under different starvation–refeeding treatments all had 100% survival up to day 5 of experiments. After 10 days, however, a 4-day starvation period followed by refeeding showed negative effects with <50% survival. During continuous starvation, lipids were the first energy reserve used to maintain basal metabolism, followed by proteins. Except for cholesterol, all metabolite concentrations differed between continuous starvations and feeding. Despite high seahorse survival after 5 days in the absence of food, the recovery of the metabolic status is possible after a starvation period of no more than 2 days, since irreversible physiological changes compromising the ultimate survival of the organisms take place after this time.

Evaluating the sustainability of conservation and development strategies: The case of management units for wildlife conservation in Tabasco, Mexico

Strategies that integrate conservation and development objectives are increasingly common, albeit still controversial, at the global scale. There are information gaps regarding their overall reach and sustainability through an integral assessment approach. Therefore, the objectives of this study were: 1) to design a Methodological Framework of Sustainability Evaluation (MFSE) that could be applied to the assessment of conservation and development strategies; and 2) to apply this MFSE in an empirical exercise with management units for wildlife conservation (UMAs, by its Spanish acronym), a major environmental policy in Mexico. The UMAs confer legal rights to landowners for the exploitation of wildlife and protection of ecosystems. The MFSE had five hierarchical levels (three sustainability dimensions, general and specific criteria, indicators and metrics), which are grouped into a Sustainability Index (SI). Data was collected from official databases, structured interviews with official managers and landowners, and field observations in six UMAs in Tabasco, Mexico. According to the findings, the SI in the social dimension showed the highest values, followed by the environmental and economic dimensions. The key aspects for sustainability in the six UMAs are: 1) local governance norms, 2) active participation and interinstitutional linkage, 3) capacity for initial economic investment and long-term vision and 4) project liability and appropriation from their design. Free-ranging and intensive UMAs pose different objectives, since the former are focused on the management and conservation of ecosystems where the species of interest are found, while the latter are focused on species-based management, mostly those of economic interest. For this reason, they may require separate governmental appraisal as different management systems.

Neo-colonialism and greed: Africans’ views on trophy hunting in social media

Existing studies on the trophy hunting controversy in recent years have largely represented the anti-hunting views of the Western public, while overlooking the opinions of African people. This study taps into Africans’ social media narratives to illuminate the racially, politically, and historically charged context in which trophy hunting occurs in Africa. Data were collected from the Facebook pages of three major social media players with a predominantly African followership, namely, BBC News Africa, News24.com, and NewsDay-Zimbabwe. The dominant pattern was resentment towards what was viewed as the neo-colonial character of trophy hunting, in the way it privileges Western elites in accessing Africa’s wildlife resources. However, the West’s passionate criticism of violence against animals was viewed by participants as overblown, and as evidence of their (Westerners') higher regard for animals than for African people. Interestingly, trophy hunting was not objectionable from an animal rights perspective, but as a consequence of its complex historical and postcolonial associations. In addition, criticism was directed at African politicians who were perceived as allowing wildlife exploitation to satisfy their own greed. In this instance, far from tourism being a facilitator of intercultural understanding and peace, it appears to reproduce images and wounds of a colonial past.

Insular threat associations within taxa worldwide

The global loss of biodiversity can be attributed to numerous threats. While pioneer studies have investigated their relative importance, the majority of those studies are restricted to specific geographic regions and/or taxonomic groups and only consider a small subset of threats, generally in isolation despite their frequent interaction. Here, we investigated 11 major threats responsible for species decline on islands worldwide. We applied an innovative method of network analyses to disentangle the associations of multiple threats on vertebrates, invertebrates, and plants in 15 insular regions. Biological invasions, wildlife exploitation, and cultivation, either alone or in association, were found to be the three most important drivers of species extinction and decline on islands. Specifically, wildlife exploitation and cultivation are largely associated with the decline of threatened plants and terrestrial vertebrates, whereas biological invasions mostly threaten invertebrates and freshwater fish. Furthermore, biodiversity in the Indian Ocean and near the Asian coasts is mostly affected by wildlife exploitation and cultivation compared to biological invasions in the Pacific and Atlantic insular regions. We highlighted specific associations of threats at different scales, showing that the analysis of each threat in isolation might be inadequate for developing effective conservation policies and managements.

Food and livelihoods in park-adjacent communities: The case of the Odzala Kokoua National Park

Protected areas (PAs) in Central Africa provide unprecedented opportunities to maintain ecosystem integrity and safeguard the unique wildlife of one of the most biodiverse regions in the world. However, conflicts exist between wildlife protection, and the needs of human populations adjacent to PAs. Although the use of wildlife resources within PAs is nominally regulated, wildlife exploitation in the areas surrounding parks benefit human nutrition and livelihoods of adjacent populations. In 2013–2014, we interviewed 28% of all known households in 37 villages surrounding the Odzala Kokoua National Park (OKNP), Republic of Congo. We gathered information on bushmeat consumption, income, material assets, and hunter perception of the state of wildlife. We show that bushmeat species (mostly duikers, small monkeys and porcupine) were consumed in 38–48% of meals, and 20–30% of households earned cash from hunting wildlife in most villages; more than any other single source of revenue, except cocoa. Although it remains unknown whether the park was a reservoir for wildlife for areas around the studied villages, we showed that more bushmeat was consumed closer to OKNP. By contrast, income from bushmeat sales in villages closer to markets was greater, and as a corollary, market access and household wealth were positively correlated. Overall, total household income, income from bushmeat sales, travel time, and distance to the OKNP were good predictors of household wealth. Wildlife, although considered more abundant around villages closest to the park, was perceived as generally declining around all village groups. Our results highlight the possible importance of PAs and adjacent areas as reservoirs of wildlife and in maintaining wild meat resources used by the surrounding human populations.

The Complex Business of Sustainable Exploitation of Wildlife

The Complex Business of Sustainable Exploitation of Wildlife

The local bird trade and its conservation impacts in the city of Guiyang, Southwest China

China has a history and reputation of substantial exploitation of wildlife, and the harvest and trade of wild birds are common throughout the country, both for exportation and local demand. This study documents the diversity and quantity of birds being traded in the city of Guiyang, Southwest China, and evaluates its potential conservation effects. Data were collected through direct observations and through informal conversations on weekends in a public market between March 2014 and February 2015. In total, 206 species belonging to 40 families and 13 orders were recorded, with the family Turdidae having the largest species diversity observed (28 species). The number of individuals on sale was greatly variable among different species. Ashy-throated parrotbills (Paradoxornis alphonsianus) were the most encountered birds, mainly driven by the practice of bird fighting, followed by Acridotheres cristatellus, Garrulax canornus, Zosterops japonicas, Zosterops palpebrosa, Zosterops erythropleurus, Rhyacornis fuliginosus, Emberiza elegans, Leiothrix lutea and Phoenicurus auroreus, which are all common and native to Guiyang. Our data indicated that at least 2000 individuals have been traded in one year for each of these species. We argue that the current bird trade raises a serious potential threat of over-exploitation of these species, especially due to bird fighting and hunting during the breeding season, as well as raising further potential threats of invasive species spread and disease transmission. Measures to control the trade are discussed here, and environmental education could be the most effective. This study highlights the significance of paying more attention to the domestic bird trade in the subtropical region.

Different responses of free-ranging wild guanacos (Lama guanicoe) to shearing operations: implications for better management practices in wildlife exploitation

AbstractIn certain areas of South America, free-ranging, wild guanacos (Lama guanicoe) are exploited for fibre by local people. This activity includes the capture and handling of animals which can adversely affect their behaviour and physiology. This study investigated the behavioural and physiological responses of guanacos to shearing and handling activities in order to obtain a better picture of the welfare state of individuals. Parameters that were assessed consisted of: time enclosed; handling time; sex; age; and vital signs (heart beat frequency per minute, respiratory rate per minute, body temperature and body condition). Blood samples were also collected to measure serum cortisol levels and neutrophil/lymphocyte ratios. Frequencies of spitting, kicking, escape attempts and vocalisations were recorded as behaviours considered indicative of stress. Our results showed that stress behaviour frequencies were higher with increased handling time, whereas serum cortisol and N/L levels were higher when body condition scores were low. Handling time should be kept as short as possible to minimise individuals’ stress levels, particularly when body condition is low. Stress behaviour rates and serum cortisol levels were higher in juvenile compared to adult guanacos. Finally, both physiological measures of stress — serum cortisol concentrations and N/L ratios — were higher during the management activities of 2010 than in 2009, which may have been as a result of more inclement weather in 2010. When managing guanacos, it is important to consider both animal traits and previous environmental conditions and to avoid shearing juveniles and individuals with poor body condition scores if weather conditions are severe. These management recommendations are likely to improve animal welfare, facilitating sustainable management of this wild and emblematic species from the desert biomes of South America.

What Explains Wildlife Value Orientations? A Study among Central African Forest Dwellers

This study of values placed on wildlife by Bantu and Yaka Pygmy forest dwellers (n = 200) in Northern Congo identified and analyzed two wildlife value orientations - “anthropocentric” and “biocentric.” The former, strongly displayed across all segments of both societies, was likely motivated by heavy reliance on bushmeat and human–wildlife conflicts, and was linked to attitudes approving the killing of animals for human benefit. The “biocentric” orientation was more common among formally educated male respondents who do not hunt and positively linked to attitudes favoring conservation. Wildlife management strategies should consider including 1) sustainable local wildlife exploitation, 2) livelihood projects that provide a real alternative to hunting, and 3) human–wildlife conflict mitigation.

Pokémon Go: Benefits, Costs, and Lessons for the Conservation Movement

AbstractPokémon Go, an augmented reality (AR) smartphone game, replicates many aspects of real‐world wildlife watching and natural history by allowing players to find, capture, and collect Pokémon, which are effectively virtual animals. In this article, we consider how the unprecedented success of Pokémon Go as a smartphone game might create opportunities and challenges for the conservation movement. By encouraging players to go outside and consider various aspects of virtual species’ biology, the game could increase awareness and engagement with real‐world nature. However, interacting with Pokémon could alternatively encourage exploitation of wildlife or replace players’ desire to interact with real‐world nature. We suggest a number of ways in which Pokémon Go could be adapted to increase its conservation impact, and how new conservation‐orientated AR games could be created. We conclude that Pokémon Go sets a precedent for well‐implemented AR games from which the conservation movement could borrow a number of ideas.

How many remnant gibbon populations are left on Hainan? Testing the use of local ecological knowledge to detect cryptic threatened primates.

For Critically Endangered "species of extreme rarity," there is an urgent need to clarify the potential survival of remnant populations. Such populations can be difficult to detect using standard field methods. Local ecological knowledge (LEK) represents an important alternative source of information, but anecdotal reports of rare or possibly extinct species can contain uncertainty and error. The Hainan gibbon (Nomascus hainanus), the world's rarest primate species, is confirmed to only survive as a tiny remnant population in Bawangling National Nature Reserve, China, but unverified gibbon sightings have been reported from other forest areas on Hainan. We conducted a large-scale community interview survey to gather new data on patterns of primate LEK from 709 respondents around seven reserves across Hainan, to investigate the possibility of gibbon survival outside Bawangling and assess whether LEK can provide useful information for conservation management of cryptic remnant populations. Comparative LEK data for gibbons and macaques are consistent with independent data on the relative status of these species across Hainan. Local awareness and experience of gibbons was low across Hainan, including at Bawangling, but we recorded recent anecdotal gibbon reports from most reserves. A follow-up field survey at Limushan Provincial Nature Reserve did not detect gibbons, however, and documented intensive wildlife exploitation within this reserve. All other surveyed landscapes showed some statistically lower levels of respondent awareness, experience, or sighting histories of gibbons compared to Bawangling, and are therefore considered biologically unlikely to support gibbons. Unverified LEK data can provide important insights into the possible status of cryptic remnant populations when assessed carefully and critically in relation to data from known populations.

Impacts of hunting on tropical forests in Southeast Asia.

Although deforestation and forest degradation have long been considered the most significant threats to tropical biodiversity, across Southeast Asia (Northeast India, Indochina, Sundaland, Philippines) substantial areas of natural habitat have few wild animals (>1 kg), bar a few hunting-tolerant species. To document hunting impacts on vertebrate populations regionally, we conducted an extensive literature review, including papers in local journals and reports of governmental and nongovernmental agencies. Evidence from multiple sites indicated animal populations declined precipitously across the region since approximately 1980, and many species are now extirpated from substantial portions of their former ranges. Hunting is by far the greatest immediate threat to the survival of most of the region's endangered vertebrates. Causes of recent overhunting include improved access to forests and markets, improved hunting technology, and escalating demand for wild meat, wildlife-derived medicinal products, and wild animals as pets. Although hunters often take common species, such as pigs or rats, for their own consumption, they take rarer species opportunistically and sell surplus meat and commercially valuable products. There is also widespread targeted hunting of high-value species. Consequently, as currently practiced, hunting cannot be considered sustainable anywhere in the region, and in most places enforcement of protected-area and protected-species legislation is weak. The international community's focus on cross-border trade fails to address overexploitation of wildlife because hunting and the sale of wild meat is largely a local issue and most of the harvest is consumed in villages, rural towns, and nearby cities. In addition to improved enforcement, efforts to engage hunters and manage wildlife populations through sustainable hunting practices are urgently needed. Unless there is a step change in efforts to reduce wildlife exploitation to sustainable levels, the region will likely lose most of its iconic species, and many others besides, within the next few years.

Conhecimentos e usos da fauna por caçadores no semiárido brasileiro: um estudo de caso no estado da Paraíba, Nordeste do Brasil

The present study was undertaken in a traditional community in the semiarid region of Paraiba State, Northeastern Brazil, with the purpose of registering the main animal species hunted and evaluating the implications of these practices in terms of the conservation of local fauna. A total of 78 species of wild tetrapod vertebrates were cited by 24 interviewees as being hunted in the region. These animals were separated into four different animals groups (mammals, birds, reptiles and amphibians) with ten distinct purposes: zootherapy, folk veterinary medicine, cosmetics, mystical-religious purposes, creation/domestication, commercial exploration, ornamental use, as food, as entertainment, and for animal control. This work highlights the lack of studies regarding some forms of exploitation of wildlife resources as a barrier that hinders the assessment of priorities for conservation and management, by precluding a stable inventory of animal species under the greatest pressure of use. However, even with these barriers we can clearly see that exploitation and utilization of wildlife by man represents one of the most significant uses of natural resources in the surveyed areas.

Elephant Poaching and Ivory Trafficking as a Threat to the Peace

The two African states Democratic Republic of Congo and the Central African Republic have been struck by civil war enmeshed with military involvement of neighbouring states. The ongoing conflicts have been fuelled by the fight over the countries’ natural resources, ranging from diamonds over gold to ivory. Since the end of the 1990s, the UN Security Council and other UN bodies have been dealing with the conflicts in Congo, and have been trying to bring to an end and to sanction the serious violations of human rights and of IHL that have been committed by all sides in those conflicts. The international community’s attempt to come to grips with the so-called “blood diamonds”, inter alia through a multi-stakeholder process and certification scheme is well known. With two resolutions of January 2014, the UN Security Council addresses the destabilizing effects of the illegal exploitation of wildlife.

Unsustainable Exploitation of Freshwater Wetland Turtles and Tortoises in Central Niger Delta

Wildlife is commonly exploited as sources of animal protein in Nigeria. This study was designed to assess the rate of wildlife exploitation in 2 communities in Delta State, Nigeria specialized in the sale of turtles and tortoises. These two communities receive 1,512 turtles and tortoises weekly from hunters and display them for sales along the East-West Road. Fortnightly field surveys in these communities show that 12 shops displayed 144 – 212 numbers of turtles and tortoises while the rest are kept in bulk storage. Each shop sells 16 – 20 (average 18) on favorable business days and 3 – 9 (average 6) on unfavorable days. The retailer makes an average profit of N1000, N 3,500 and N 4000 per unit of small, medium and large species respectively (US $1 = N 156). The numbers of retailers are increasing. The turtles and tortoises were captured from freshwater wetlands located in an island bounded in the north by the bifurcation of River Niger at Aboh, and between Ramos River to the west and San Bartholomew River to the east and in the south by the mangrove ecosystem at the fringe of the Atlantic Ocean. These wetlands turtles and tortoises are mostly exploited for meat, traditional medicine and as source of employment and income. The species exploited include 2 species of turtles (Pelusios niger and P. castaneus) and tortoises (Kinixys erosa and K. homeana). The study concluded that this pattern of wildlife exploitation is unsustainable.

Wildlife Exploitation: A Market Survey in Nagaland, North-Eastern India

With growing human population, increased accessibility to remote forests and adoption of modern tools, hunting has become a severe global problem, particularly in Nagaland, a Northeast Indian state. While Indian wildlife laws prohibit hunting of virtually all large wild animals, in several parts of North-eastern parts of India that are dominated by indigenous tribal communities, these laws have largely been ineffective due to cultural traditions of hunting for meat, perceived medicinal and ritual value, and the community ownership of the forests. We report the quantity of wild animals sold at Tuensang town of Nagaland, based on weekly samples drawn from May 2009 to April 2010. Interviews were held with vendors on the availability of wild animals in forests belonging to them and methods used for hunting. The tribes of Chang, Yimchunger, Khiemungan, and Sangtam are involved in collection/ hunting and selling of animals in Tuensang. In addition to molluscs and amphibians, 1,870 birds (35 species) and 512 mammals (8 species) were found in the samples. We estimated that annually 13,067 birds and 3,567 mammals were sold in Tuensang market alone, which fetched about Indian Rupees ([Formula: see text]) 18.5 lakhs/ year. Temporal variation was observed with respect to various taxa sold; molluscs: almost all through the year; amphibians: June-August; and birds and mammals restricted to October-February. We suggest monitoring of all major markets of Nagaland to examine trends in exploitation of wild animals. However, considering the traditional dependency of people on wild resources, as well as their cultural sentiments and livelihoods, any interventions for wildlife conservation should have the involvement and support of local inhabitants.

Bringing Compassion to the Ethical Dilemma in Killing Kangaroos for Conservation

Ethical debate on the killing of kangaroos has polarised conservation and animal welfare science, yet at the heart of these scientific disciplines is the unifying aim of reducing harm to non-human animals. This aim provides the foundation for common ground, culminating in the development of compassionate conservation principles that seek to provide mechanisms for achieving both conservation and welfare goals. However, environmental decision-making is not devoid of human interests, and conservation strategies are commonly employed that suit entrenched positions and commercial gain, rather than valuing the needs of the non-human animals in need of protection. The case study on the wild kangaroo harvest presents just such a dilemma, whereby a conservation strategy is put forward that can only be rationalised by ignoring difficulties in the potential for realising conservation benefits and the considerable welfare cost to kangaroos. Rather than an open debate on the ethics of killing game over livestock, in this response I argue that efforts to bring transparency and objectivity to the public debate have to date been obfuscated by those seeking to maintain entrenched interests. Only by putting aside these interests will debate about the exploitation of wildlife result in humane, compassionate, and substantive conservation benefits.

Lack of trophic release with large mammal predators and prey in Borneo

When humans reduce top carnivore abundance in insular systems, herbivore populations may increase, with cascading impacts on the community. But the prevalence of such “trophic release” effects in non-insular ecosystems remains little known, particularly in tropical ecosystems. We assessed whether areas with low top carnivore abundance were associated with greater abundance of herbivores across seven rainforest study areas in Malaysian Borneo. We deployed 134 camera-trap stations and analyzed the resulting photographic detections from 16,608 trap-days using multi-species occupancy models that estimate abundance while accounting for imperfect detectability. Estimated local abundance of Sunda clouded leopards (Neofelis diardi), the apex mammalian predator, varied from 0.0 to 3.5 individuals per camera location. Clouded leopard abundance was not negatively correlated with the abundance of any of the four prey species that we analyzed. Rather, sites with few or no clouded leopards also had the lowest estimated abundance of pig-tailed macaques (Macaca nemestrina). Estimated abundance of muntjac (Muntiacus spp.) and mousedeer (Tragulus spp.) was statistically unrelated to estimated clouded leopard abundance. Bearded pig (Sus barbatus) abundance was likewise unaffected by predator abundance, but pigs appear to live in larger groups when clouded leopards are common, possibly to better defend their young. We found no evidence of trophic release, an important conservation threat in other areas, in this ecosystem, particularly relative to the massive impacts of agricultural conversion, habitat degradation, and unsustainable wildlife exploitation.

Bush Meat Harvesting and Human Subsistence Nexus in the Oban Hill Communities of Nigeria

Wildlife is an important socio-cultural and economic resource in West and Central Africa. The declining wildlife population in the recent time is as a result of a combination of factors, namely, increased access and demand for wildlife resources by rural and urban dwellers, population growth, improved hunting technology and lack of protein alternatives in many households.. This paper investigates the contribution of bush meat extraction to household’s livelihood (income, health, nutrition, etc); the role of beliefs and taboos in wildlife conservation and the attitude of community members towards wildlife hunting and conservation in Oban Hills, Nigeria. Data for the study were generated through a triangulation of qualitative and quantitative methods using primary and secondary sources. It was revealed that majority of the people of Oban Hills are farmers although some also engaged in quarry business, civil service, trading, lumbering and hunting. However, there has been a decline in income generated from hunting and dependence on bush meat as protein source due to restrictions on hunting in and around forests in the protected area. It was also observed that beliefs and taboos in form of totems played a major role in wildlife conservation in the past; therefore involving existing cultural institutions in conservation efforts will facilitate sustainable wildlife exploitation in Oban Hills. However, the involvement of the cultural institution in the conservation agenda and the integration of these values into the overall conservation strategy will be achieved through a formal process of recognition and consultation by the responsible government agencies.

Bushmeat trade in the Cross–Sanaga rivers region: Evidence for the importance of protected areas

Exploitation of wildlife for meat in the tropics (‘bushmeat’) is a critical threat for biodiversity, particularly in Africa. Here, we investigate the importance of protected areas (National Parks and other forest parks) as sources for the trade by exploring patterns in pricing and condition of bushmeat carcasses. We surveyed carcass prices in a large sample of trading points (87 markets surveyed, over a 35,000km2 area) in Cameroon and Nigeria in the Cross–Sanaga region of West Africa. We assessed evidence for national parks as the source of animals traded as bushmeat. The study area included rural and urban centers (Calabar, Nigeria, and Douala, Cameroon) close to important protected areas: the Cross River National Park in Nigeria, and Korup National Park in Cameroon. Both parks host very high species diversity, including a range of endemics. Prices increased with distance from national park boundaries, particularly in Cameroon, where parks may be less depleted than in Nigeria. There was evidence that trading points closer to parks were more likely to function as wholesalers, with meat moving onto further trading points, rather than being sold to the end consumer. Carcasses were more often smoked (a treatment aimed at preservation) if they were not sold to their final consumers; smoking was also commoner at larger trading points. Prices were higher close to the road network, where opportunities for further trade were more available. We consider how wildlife harvests in and around protected areas may be managed to minimize depletion of animal populations, and if protected areas may, on the principle of marine no-take zones, be sustainable sources for regulated harvests.