Habitat use and diet of bush dogs, Speothos venaticus, in the Northern Pantanal, Mato Grosso, Brazil

AbstractWe radio-tracked a pack of bush dogs Speothos venaticus (7–10 individuals) near Água Boa in Mato Grosso, Brazil, for 18 months to investigate their use of habitat in cultivated land. The pack's home range was 709 km2 (fixed-kernel 95%), which exceeds estimates of home range for the largest Neotropical carnivore, the jaguar Panthera onca. Of the 245 locations where the dogs were recorded 95% were within native vegetation (savannah and forest), even though these habitats comprised only 34% of the pack's home range. This indicates a preference for native vegetation, and this was reinforced by composition analysis of habitat use, which showed that the pack used savannah and forest more than expected and cultivated areas less than expected. Analysis of activity showed that the bush dogs were moving quickly in more than half of the locations in cultivated areas, foraging in most savannah locations and resting in most forest locations. Our results indicate that bush dogs can live in areas with a high proportion of cultivated land (66%), possibly because of the structural connectivity of the landscape (80% of the native habitat is within a single patch). However, their home range appears to be inflated compared to that of other carnivores, which may have a negative effect on the species in the long term.

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Atropelamento de fauna silvestre em uma Reserva da Biosfera no Brasil: ameaças à conservação do Pantanal Norte do Brasil

Revista Ibero-Americana de Ciências Ambientais ◽

10.6008/cbpc2179-6858.2021.001.0010 ◽

2020 ◽

Vol 12 (1) ◽

pp. 114-125

Author(s):

Lucimar Rodrigues Vieira Curvo ◽

Sônia Biaggi Alves de Alencar ◽

Franciele Itati Kreutz ◽

Guilherme Capibaribe Ribeiro Barbosa ◽

Celso Soares Costa ◽

...

Keyword(s):

Mato Grosso ◽

Nasua Nasua ◽

Boa Constrictor ◽

Hydrochoerus Hydrochaeris ◽

Speothos Venaticus

Animais silvestres são atropelados por veículos automotores, causando a morte ao longo de rodovias. Estima-se que 476 milhões de animais silvestres são mortos a cada ano no Brasil. O Pantanal Norte, no bioma brasileiro de Mato Grosso, é uma região que vem ao longo da sua história de uso e ocupação, sofrendo grandes pressões antrópicas, principalmente atividades de garimpo, mineração, pesca desportiva e profissional predatória, introdução de espécies, agricultura, pecuária e urbanização. A rodovia MT – 040 (Estrada-Parque Santo Antônio – Barão de Melgaço com 112 Km até Barão de Melgaço (Pantanal Norte). O objetivo deste estudo foi registrar atropelamentos de animais silvestres por veículos automotores ao longo da Estrada Parque (Pantanal Norte de Mato Grosso). Os cadáveres dos animais atropelados foram fotografados e identificados por zoólogos especialistas, através de fotos, georreferenciadas. Obtive-se como resultados a ocorrência de 86 (oitenta e nove) animais, pertencentes a 9 (seis) ordens diferentes. Identificou-se as seguintes espécies: 34 Capivaras (Hydrochoerus hydrochaeris), 10 Quati (Nasua nasua), 6 Tamandua-bandeira (Myrmecophaga tridactyla), 1 Gavião-belo (Busarellus nigricollis), 12 jacaré-do-pantanal (Caiman yacare), 7 Tamanduá-mirim (Tamandua tetradactyla), 17 cahorro-do-mato (Speothos venaticus), 1 sucuri (Eunetctus murinus) e 1 jibóia (Boa constrictor). Constatou-se a predominância da mortandade de mamíferos e das ordens Rodentia, Pilosa e carnívora, durante o período de cheia. Devido a relevância deste estudo, faz-se necessário o monitoramento constante de animais silvestres na região, conhecer sua biologia e principalmente criar políticas públicas que visem a fiscalização, conservação e minimizar os impactos causados nesses ecossistema naturais.

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Breeding activity patterns, reproductive modes, and habitat use by anurans (Amphibia) in a seasonal environment in the Pantanal, Brazil

Amphibia-Reptilia ◽

10.1163/1568538054253375 ◽

2005 ◽

Vol 26 (2) ◽

pp. 211-221 ◽

Cited By ~ 115

Author(s):

Cynthia Prado ◽

Masao Uetanabaro ◽

Célio Haddad

Keyword(s):

Habitat Use ◽

Rainy Season ◽

Seasonal Pattern ◽

Activity Patterns ◽

Reproductive Activity ◽

Mato Grosso ◽

Breeding Activity ◽

Seasonal Environment ◽

Reproductive Modes ◽

Aquatic Mode

AbstractAnnual patterns of breeding activity, reproductive modes, and habitat use are described for a frog community in a seasonal environment, in the southern Pantanal, Mato Grosso do Sul, Brazil. Data were collected monthly between January 1995 and December 1998. A total of 24 species from four families; Bufonidae (3 species), Hylidae (10 species), Leptodactylidae (9 species), and Microhylidae (2 species) were registered. Three reproductive activity patterns are recognized among these species: continuous, explosive, and prolonged; 50% of the species were explosive breeders. Seasonal pattern of reproduction was verified for three analyzed years (1995-1997); most species reproduced during the rainy season (Nov-Jan). The reproduction was aseasonal in 1998; unexpected rains in the dry season lead to an unusual breeding activity. Five reproductive modes were noted — 62.5% of the species have the generalized aquatic mode, and 33.3% deposit eggs embedded in foam nests. Many species used the same sites for reproduction, although temporal partitioning and calling site segregation was observed. The occurrence of many species that exhibit explosive breeding early in the rainy season is common in seasonal and open environments with variable and unpredictable rainfall, as is the case in the Pantanal.

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Bartonella clarridgeiae and Bartonella vinsonii subsp. berkhoffii exposure in captive wild canids in Brazil

Epidemiology and Infection ◽

10.1017/s0950268814001277 ◽

2014 ◽

Vol 143 (3) ◽

pp. 573-577 ◽

Cited By ~ 8

Author(s):

D. A. FLEISCHMAN ◽

B. B. CHOMEL ◽

R. W. KASTEN ◽

M. R. ANDRÉ ◽

L. R. GONÇALVES ◽

...

Keyword(s):

South America ◽

Native Species ◽

Antibody Testing ◽

Mato Grosso ◽

Knowing That ◽

Wild Canids ◽

Free Ranging ◽

Chrysocyon Brachyurus ◽

Reservoir Hosts ◽

Speothos Venaticus

SUMMARYWild canids are potential hosts for numerous species of Bartonella, yet little research has been done to quantify their infection rates in South America. We sought to investigate Bartonella seroprevalence in captive wild canids from 19 zoos in São Paulo and Mato Grosso states, Brazil. Blood samples were collected from 97 wild canids belonging to four different native species and three European wolves (Canis lupus). Indirect immunofluorescent antibody testing was performed to detect the presence of B. henselae, B. vinsonii subsp. berkhoffii, B. clarridgeiae, and B. rochalimae. Overall, Bartonella antibodies were detected in 11 of the canids, including five (12·8%) of 39 crab-eating foxes (Cerdocyon thous), three (11·1%) of 27 bush dogs (Speothos venaticus), two (8·7%) of 23 maned wolves (Chrysocyon brachyurus) and one (12·5%) of eight hoary foxes (Lycalopex vetulus), with titres ranging from 1:64 to 1:512. Knowing that many species of canids make excellent reservoir hosts for Bartonella, and that there is zoonotic potential for all Bartonella spp. tested for, it will be important to conduct further research in non-captive wild canids to gain an accurate understanding of Bartonella infection in free-ranging wild canids in South America.

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Ecomorphology and diet reflect the spatial segregation between two Siluriformes species inhabiting a stream of the Bodoquena Plateau, in Central Brazil

Iheringia Série Zoologia ◽

10.1590/1678-4766201510516268 ◽

2015 ◽

Vol 105 (1) ◽

pp. 62-68 ◽

Cited By ~ 3

Author(s):

Francisco Severo-Neto ◽

Fabrício B. Teresa ◽

Otávio Froehlich

Keyword(s):

Habitat Use ◽

Aquatic Insects ◽

Dietary Habits ◽

Spatial And Temporal Variability ◽

Mato Grosso ◽

Central Brazil ◽

Food Items ◽

Generalist Diet ◽

Trophic Traits ◽

Mato Grosso Do Sul

Pimelodella taenioptera Miranda Ribeiro, 1914 and Imparfinis schubarti (Gomes, 1956) are two of the most common fish species in Bodoquena Plateau streams, Paraguay basin. These species have benthic habits and subaquatical observations suggested that they present differentiation in their preference for mesohabitat types. Pimelodella taenioptera shows preference for slow waters, such as pools, while I. schubarti is associated to riffles. In this study we investigated if the known patterns of mesohabitat use of P. taenioptera and I. schubarti can be predict by their ecomorphological and trophic traits. We described the dietary habits and ecomorphological attributes of P. taenioptera and I. schubarti individuals, captured in the Parque Nacional da Serra da Bodoquena (PNSB), Mato Grosso do Sul state, central Brazil. Pimelodella taenioptera presented a more generalist diet, consuming a total of 23 different food items. Imparfinis schubarti have a diet based exclusively on aquatic insects. The ecomorphological analysis revealed that the species differed in relation to five morphological traits associated to habitat use (p <0.01). The results of this study reveal a clear functional dissimilarity between P. taenioptera and I. shubarti. The observed trophic and ecomorphological patterns are congruent with the known habitat use for these species and probably reflect the spatial and temporal variability on conditions and resources present in riffles and pools. Therefore, as expected, the morphological and feeding attributes represent predictive information related to mesohabitat use.

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The bush dog Speothos venaticus and short-eared dog Atelocynus microtis in a fragmented landscape in southern Amazonia

Oryx ◽

10.1017/s0030605309990871 ◽

2010 ◽

Vol 44 (2) ◽

pp. 300-303 ◽

Cited By ~ 14

Author(s):

Fernanda Michalski

Keyword(s):

Camera Trapping ◽

Sampling Effort ◽

Fragmented Landscape ◽

Study Region ◽

Mato Grosso ◽

Continuous Forest ◽

Forest Sites ◽

Bush Dog ◽

Southern Amazonia ◽

Speothos Venaticus

AbstractThe bush dog Speothos venaticus and the short-eared dog Atelocynus microtis are categorized as Near Threatened on the IUCN Red List. I document the occurrence of these two little known canids in a fragmented landscape in southern Amazonia (around Alta Floresta, Mato Grosso state, Brazil) using interviews and two extensive camera-trapping surveys. From a total of 144 interviews conducted during 2001–2002 in forest fragments and continuous forest sites, bush and short-eared dogs were confirmed in only eight (5.6%) and 14 (9.7%) forest sites, respectively. Two camera-trapping surveys, conducted in 2003–2004 and 2007–2008, with a total of 6,721 camera-trap days, recorded two photographs of bush dogs and seven of short-eared dogs, in three continuous forest sites. On the basis of the large sampling effort it appears that these two elusive species occur at low densities in the study region. The continued presence of these species in an agricultural frontier with high deforestation rates makes this information of relevance for long-term conservation initiatives in this region and in other Neotropical agricultural frontiers.

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