| ecology and conservation of the crowned lemur, lemur coronatus, at ankarana, n. madagascar. with notes on sanford's lemur, other sympatrics and subfossil lemurs. | forests of ankarana limestone massif in northern madagascar support one of the largest and least disturbed populations of crowned lemurs, lemur coronatus. this paper reports a preliminary study of the ecology of this species in the ankarana special reserve conducted at the end of the dry season in 1986, with additional information collected a year later. crowned lemurs occur in very high densities in the semi-deciduous canopy forest and this probably represents a dry season refuge for the specie ... | 1989 | 2807091 |
| predation on milne-edward's sifaka (propithecus diadema edwardsi) by the fossa (cryptoprocta ferox) in the rain forest of southeastern madagascar. | | 1997 | 9170643 |
| microsatellite markers for the fossa (cryptoprocta ferox). | | 2000 | 10736052 |
| why be diurnal? or, why not be cathemeral? | as a behavioural strategy, cathemerality is thought to confer considerable advantages by allowing animals to extend activity flexibly into either the diurnal or nocturnal phase in response to the prevailing ecological conditions. factors such as temperature, access to food sources and minimising the risk of predation are all thought to be important in promoting cathemerality, although previous studies have produced inconsistent results. this paper adopts a different approach by first asking whet ... | 2006 | 16415578 |
| predation and cathemerality. comparing the impact of predators on the activity patterns of lemurids and ceboids. | the removal, or absence, of predatory species could be a contributing proximate factor to the rise of primate cathemerality. but predators themselves can also be cathemeral, so cathemerality could well be an evolutionary stable strategy. from a comparative perspective, it appears that the effect of predatory species cannot provide a unitary explanation for cathemerality. varying distributions and population densities of predators, especially raptors, may be key factors in owl monkey (aotus) cath ... | 2006 | 16415583 |
| molecular systematics of the hyaenidae: relationships of a relictual lineage resolved by a molecular supermatrix. | the four extant species of hyenas (hyaenidae; carnivora) form a morphologically and ecologically heterogeneous group of feliform carnivorans that are remnants of a formerly diverse group of mammalian predators. they include the aardwolf (proteles cristatus), a termite-feeding specialist, and three species with a craniodental morphology adapted to cracking the bones of prey and/or carcasses, the spotted hyena (crocuta crocuta), brown hyena (parahyaena brunnea), and striped hyena (hyaena hyaena). ... | 2006 | 16503281 |
| the importance of taboos and social norms to conservation in madagascar. | informal institutions governing the use of wild species are present in many societies. a system of prohibitions known as fady is central to malagasy culture. we examined whether fady that relate to the use of natural resources in the eastern rainforests of madagascar play an important conservation role. prohibitions ranged from strict taboos in which a species or area was forbidden by the ancestors to social norms that concerned acceptable behavior when harvesting wild species. strict taboos off ... | 2008 | 18616743 |
| prevalence of antibodies to selected viruses and parasites in introduced and endemic carnivores in western madagascar. | introduced animals impact endemic populations through predation, competition, and disease transmission. populations of endemic carnivores in madagascar are declining, and pathogens transmitted from introduced species may further endanger these unique species. we assessed the exposure of introduced and endemic carnivores to common viral and parasitic pathogens in two national parks of madagascar (kirindy mitea national park and ankarafantsika national park) and their neighboring villages. we also ... | 2016 | 27195685 |
| encephalomyelitis by toxoplasma gondii in a captive fossa (cryptoprocta ferox). | encephalomyelitis due to toxoplasma gondii was diagnosed in a fossa (cryptoprocta ferox). the animal had ataxia, atrophy of hind limb muscles and progressive wasting before dying 12 months after the onset of clinical signs. toxoplasmosis was suspected antemortem based on clinical signs and the detection of t. gondii dna by pcr on edta-blood from live animal. necropsy revealed necrotizing gastritis and severe emaciation. the main histological lesions included non-suppurative encephalomyelitis, wi ... | 2013 | 23200749 |
| transient masculinization in the fossa, cryptoprocta ferox (carnivora, viverridae). | in at least 9 mammalian species, females are masculinized throughout life, but the benefits of this remain unclear despite decades of thorough study, in particular of the spotted hyaena (crocuta crocuta) in which the phenomenon has been associated with a high fitness cost. through examination of wild and captive fossas (cryptoprocta ferox, viverridae), androgen assays, and dna typing for confirmation of gender, we made the first discovery of transient masculinization of a female mammal. juvenile ... | 2002 | 11870065 |
| hunting, exotic carnivores, and habitat loss: anthropogenic effects on a native carnivore community, madagascar. | the wide-ranging, cumulative, negative effects of anthropogenic disturbance, including habitat degradation, exotic species, and hunting, on native wildlife has been well documented across a range of habitats worldwide with carnivores potentially being the most vulnerable due to their more extinction prone characteristics. investigating the effects of anthropogenic pressures on sympatric carnivores is needed to improve our ability to develop targeted, effective management plans for carnivore cons ... | 2015 | 26375991 |
| cathemerality in wild ring-tailed lemurs (lemur catta) in the spiny forest of tsimanampetsotsa national park: camera trap data and preliminary behavioral observations. | cathemerality consists of discrete periods of activity during both the day and night. though uncommon within primates, cathemerality is prevalent in some lemur genera, such as eulemur, hapalemur, and prolemur. several researchers have also reported nighttime activity in lemur catta, yet these lemurs are generally considered "strictly diurnal". we used behavioral observations and camera traps to examine cathemerality of l. catta at the tsimanampetsotsa national park, madagascar. nighttime activit ... | 2014 | 24165866 |
| selected hematologic and biochemical values in subadult and adult captive fossas (cryptoprocta ferox). | hematologic and serum biochemical values were determined for 26 (16 males and 10 females) clinically healthy captive fossas (cryptoprocta ferox) living at zoo duisburg, germany. the animals were net-restrained and anesthetized with ketamine and medetomidine for a general examination. a total of 11 animals were classified as subadult (1-3 yr of age) and 15 as adult (aged between 4 and 13 yr). the results include reference intervals and analysis of sex and age differences. levels of inorganic phos ... | 2013 | 24063085 |
| intestinal t-cell lymphoma in a fossa (cryptoprocta ferox). | a 10-year-old male fossa (crytoprocta ferox) exhibited clinical signs of diarrhea, anorexia and weight loss. chemistry values and echographic results were suggestive of intestinal lymphoma. postmortem examination revealed severe multifocal wall thickening of the small intestine with severe enlargement of the pancreatic lymph node. microscopically, the small intestine was multifocally transmurally infiltrated by large neoplastic round cells also found in the pancreatic lymph node and the liver. o ... | 2013 | 22986271 |
| gonadal activity in male and female captive fossas (cryptoprocta ferox) during the mating season. | the fossa is an endangered, mongoose-like carnivore species endemic to madagascar with a breeding season (bs) in the southern hemisphere spring. for the present study, faecal samples of captive fossas were collected for over 1 year for five males and four non-pregnant females, and for two pregnant animals during the reproductive period. the goal was to assess gonadal activity using non-invasive hormone measurements of faecal testosterone (t) and gestagen metabolites using assays previously estab ... | 2009 | 19754545 |
| the chondrocranium of cryptoprocta ferox. | | 1985 | 4061159 |
| retaliatory killing and human perceptions of madagascar's largest carnivore and livestock predator, the fosa (cryptoprocta ferox). | fosas (cryptoprocta ferox) are madagascar's largest carnivores, occupying much of the island's forested landscape. this study provides the first evaluation of fosas' conflict with humans, a problem for many small and medium sized carnivores worldwide. we examined fosas' predation of poultry, and the subsequent retaliatory killing. over 1750 households were interviewed across four regions, encompassing madagascar's major forest types (deciduous/rainforest) and protected area classifications (nati ... | 2019 | 30875372 |
| seasonal dermatopathy and concurrent reproductive findings in captive fossa ( cryptoprocta ferox). | six female intact fossa ( cryptoprocta ferox) in the san diego zoo collection presented with episodic, seasonal alopecia and variable pruritus between the years 1984 and 2015. presentation was often accompanied by findings such as prominent palpable uterus or cervix and thickened, enlarged uterus on ultrasound. dermatologic testing has been consistently nondiagnostic for primary cause of alopecia. both the alopecia and reproductive findings have a higher occurrence from midspring to midsummer. h ... | 2017 | 29297817 |