Habitat use and relative abundance of the Spotted Paca Cuniculus paca (Linnaeus, 1766) (Rodentia: Cuniculidae) and the Red-rumped Agouti Dasyprocta leporina (Linnaeus, 1758) (Rodentia: Dasyproctidae) in Guatopo National Park, Venezuela

Jax, Elinor; Marín, Sofía; Rodríguez-Ferraro, Adriana; Isasi-Catalá, Emiliana

doi:10.11609/jott.o3915.6739-49

Cited by 14 publications

(14 citation statements)

References 29 publications

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“…The sampling effort allowed visualizing a whole annual cycle and gather evidence of reproductive events for at least eight species (Table 3). The species that were detected throughout the year include D. leporina, which showed an increase in the number of detections during the driest semester of the year, a pattern that contrasts with the one observed for species of the same genus in other localities (Rocha et al 2006;Jax et al 2015;Ouboter Kadosoe and 2016). One possible explanation is that this species extends its period of activity in search of food, thus offsetting the temporary shortages of resources (Smythen 1978).…”

Section: Discussionmentioning

confidence: 86%

Interannual and daily activity patterns of mid-sized mammals in Maracaibo Lake Basin, Venezuela

Morán

Garcia

Ferrebuz

et al. 2018

Therya

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Despite its biogeographic importance, the mammals of Maracaibo lake basin have been poorly studied. The objectives of this study were to: 1) provide a list of the mammal species detected by combining information from camera traps and other sources, and 2) describe diurnal and annual activity patterns for some of the species detected. Camera-trapping was carried out for one year in five localities within the Burro Negro Protection Zone (Spanish acronym ZPBN). Records of terrestrial mammals (excluding Chiroptera) were compiled from: 1) direct and indirect opportunistic records during field visits, 2) informal interviews with local inhabitants, 3) three national natural history collections, and 4) scientific literature. The complementarity between sources, similarity with other localities within the region, and temporal changes in composition were evaluated with the Sørensen Similarity Index (RS), and annual differences in the number of detections per sampling effort were evaluated using a X 2 test. Sampling effort was 1,799 camera days, resulting in 569 events of mammal detection recorded and 20 species from 17 families in 9 orders identified. Four species (Dasypus novemcinctus, Dasyprocta leporina, Cerdocyon thous and Leopardus pardalis) were captured all year round. Camera traps detected half of the non-flying mammal species in the area, including five that had not been previously reported by other sources (Cuniculus paca, Coendou prehensilis, Sylvilagus floridanus, Procyon cancrivorus and Puma yagouaroundi). At least three species (Panthera onca, Odocoileus virginianus, and Hydrochoerus hydrochaeris) had been reported as historically abundant, but were not detected during the year of camera trapping, which could be due to recent declines in their populations. Camera trapping provides reliable records on the presence of four species with data gaps in their distribution ranges (Myrmecophaga tetradactyla, Coendou prehensilis, Cerdocyon thous and Procyon cancrivorus), as well as baseline data for evaluating the distribution overlap between pairs of species, such as Tamandua mexicana and T. tetradactyla, and Dasyprocta leporina and D. punctata. A higher species richness was observed between June and August, in the rainy season. A pesar de su importancia biogeográfica, la mastofauna de la cuenca del Maracaibo sólo se conoce parcialmente. Los objetivos del presente trabajo eran: 1) elaborar una lista de especies de mamíferos terrestres combinando el fototrampeo con otras fuentes de información, y 2) describir patrones de actividad diarios y anuales para algunas de las especies detectadas. Se realizó fototrampeo durante un año en cinco localidades dentro de la Zona Protectora de Burro Negro (ZPBN). Se compilaron registros de presencia de mamíferos terrestres (excluyendo quirópteros) de: 1) muestreos no sistemáticos de indicios indirectos y directos, 2) entrevistas informales a habitantes locales, 3) tres colecciones zoológicas nacionales, y 4) literatura científica. Se evaluó la complementariedad entre fuentes, similitu...

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Section: Discussionmentioning

confidence: 86%

Interannual and daily activity patterns of mid-sized mammals in Maracaibo Lake Basin, Venezuela

Morán

Garcia

Ferrebuz

et al. 2018

Therya

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“…Hunting pressure had no effect on paca density and abundance, connectivity of habitat fragments available (Ye et al 2013). Hence, habitat types with continuous, mature cover are as important for paca conservation and management as secondary forest fragments interconnected to the first (Jax et al 2015). Habitat connectivity is fundamental for paca mobility and dispersal, improving the viability of its populations in the long term (Ahumada et al 2003;Gallina et al 2012 Appendix 1.…”

Section: Discussionmentioning

confidence: 99%

“…Cameratraps (models Moultrie D55, Stealth-Cam Q8X, and Bushnell Trophy XLT) were programmed to be active 24 hours for 30 consecutive days each season, taking 3 still pictures and a short video (10 to 20 sec) per event. Records were considered independent if taken in different transects and days, unless individual identification was possible (MonroyVilchis et al 2011;Jax et al 2015). Capture rates were estimated by calculating the number of independent records (pictures) of pacas in relation to the total number of effective records of all species per season and habitat type.…”

Section: Introductionmentioning

confidence: 99%

Abundance, density and habitat use of lowland paca (Cuniculus paca, Rodentia: Cuniculidae) in the Lacandon Rainforest, Chiapas, Mexico

Figueroa-de-León

Naranjo

Perales

et al. 2017

Therya

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In this study, the effect of relevant variables (availability of food and cavities, competition, predation, and hunting pressure) on the relative abundance and population density of the spotted lowland paca (Cuniculus paca) was assessed. In addition, habitat use of this species at three sites with different land use regime (Montes Azules Biosphere Reserve, community reserves, and anthropic sites) in the Lacandon Rainforest, Chiapas, Mexico was analysed. From the perspective of the source-sink systems, it was predicted that pacas selectively would use the habitat with higher food and cavity availability (source habitats), where higher densities were expected. Twelve transects were located in three sites with different land use regimes, where food availability and potential cavities used by pacas were assessed. Along these transects, 4 camera-traps were deployed every 200 meters to estimate the relative abundance of pacas and their potential competitors and predators. Photo-captured individuals were identified to estimate population density and seasonal variation in habitat use. Generalized linear models (GLM) were constructed to analyse the effects of several variables on paca abundance and density. A relative abundance of 0.05 and 0.08 paca photographs/100 camera-days were recorded in the dry and the rainy season, respectively. A density of 54 pacas/km 2 was estimated in both seasons. The availability of cavities was the only variable that showed a significant effect on paca density (P = 0.04 for the dry season, and P = 0.006 for the rainy season). Community reserves were used in the dry season more than expected from their availability in the study area (x 2 = 28.8; P = 0.0001). In the rainy season, all three sites were used by paca in proportion to their availability. Our results suggest that the cavities used as refuges by pacas drive their population dynamics, and constitute a key habitat resource for them in the study area. We propose that the Ejidal Reserve and Montes Azules Biosphere Reserve may be source habitats supporting higher paca densities and greater availability of adequate cavities to protect adults and their offspring. On the other hand, areas transformed into croplands and grasslands for livestock production would represent sink habitats with lower paca densities, less availability of adequate cavities, and absence of offspring. The long-term conservation and habitat management of pacas in transformed landscapes will probably rely on the distribution and connectivity between and within the different habitat types available in the study area.En este estudio, se evaluó el efecto de variables (disponibilidad de alimento y cavidades, competencia, depredación y presión de cacería) sobre la abundancia y densidad poblacional de Cuniculus paca. Se determinó el uso de hábitat de esta especie en tres sitios con distinto uso de suelo (Reserva de la Biosfera Montes Azules, reservas ejidales y sitios antrópicos) en la Selva Lacandona, Chiapas, México. Desde la perspectiva de los sistemas fuente-sumidero, s...

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“…paca indicou que a variável densidade de árvores foi a preditora positiva de ocupação da espécie. C. paca é uma espécie tipicamente florestal, e tem sido encontrada principalmente em florestas maduras com alta densidade de árvores (Goulart et al, 2009;Ahumada et al, 2013, Jax et al, 2015. Presença de palmeiras tem sido relatado como um fator chave no uso de habitat da espécie, visto que seus frutos e sementes são uma fonte alimentar importante para essa espécie (Emmons & Feer, 1997;Ahumada et al, 2013).…”

Section: Rodentiaunclassified

“…No bioma Cerrado sua distribuição está associada às matas de galeria . É possível que a espécie sofra pressão de caça na área de estudo, e que esta afete a sua probabilidade de ocupação (Cove et al, 2013, Jax et al, 2015. Fragmentação e efeitos de borda limitam severamente o habitat da espécie que desempenha um papel importante na dispersão de sementes (Morrison et al, 2007).…”

Section: Rodentiaunclassified

Uso de geotecnologias aplicadas em estudos de modelos de ocupação e conectividade para mamíferos de médio e maior porte no cerrado

Arimoro¹

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Mamíferos de médio e maior porte, área militar, padrões de ocupação, conectividade funcional, sistema de informação geográfica viii ABSTRACT Studies involving the planning wildlife conservation indicate that the simple act of creating and maintaining a physically protected area does not guarantee that the fauna and flora, as well as the ecological processes, are preserved. In this context, military areas represent an important element of any conservation strategy of the nacional biodiversity due to the presence of extensive undeveloped land areas, playing the role in managing natural resourses. The survey of the fauna of terrestrial mammals of medium and larger size was carried out in an area of approximately 15.000 acres in the Army Instruction Camp through camera traps along a campaign of six months between August and February 2014/2015. 26 species were recorded whose community is constituted mostly by representatives of Carnivora order (42.30%) being eight endangered species. It is considered that the maintenance of diversity observed in the area is due to the large expanse of continuous native Cerrado vegetation on the Instruction Camp, combined with habitat heterogeneity and maintenance of original native vegetation conditions, despite the military activities in the area. Then, we used detection and non-detection data obtained by camera traps along with environmental variables to determine the occupancy probability of medium and larger mammalian species in a military area, emphasizing the importance of these areas to the persistence of mammals. The probability of occupancy was modeled for 16 species by using the single-season method. The results indicated that tree density and distance from de gallery forest were the determining covariates to the occupancy of most species, indicating the importance of maintaining the vegetation structure with natural habitats for mammalian conservation. Finally, landscape connectivity was evaluated with the application of two indices (integral index of connectivity and probability of connectivity) for two scenarios: without and with the road effects to four different dispersal distances. The analysis showed that without road effects on functional connectivity it had great potential occurring including the military area as an important remaining able to maintain connections inside and outside for different dispersal distances analyzed in this study The effect of the presence of roads generated a great impact in maintaining connectivity implying the need for mitigating measures that allow the shifting of fauna in the landscape.

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Habitat use and relative abundance of the Spotted Paca Cuniculus paca (Linnaeus, 1766) (Rodentia: Cuniculidae) and the Red-rumped Agouti Dasyprocta leporina (Linnaeus, 1758) (Rodentia: Dasyproctidae) in Guatopo National Park, Venezuela

Cited by 14 publications

References 29 publications

Interannual and daily activity patterns of mid-sized mammals in Maracaibo Lake Basin, Venezuela

Interannual and daily activity patterns of mid-sized mammals in Maracaibo Lake Basin, Venezuela

Abundance, density and habitat use of lowland paca (Cuniculus paca, Rodentia: Cuniculidae) in the Lacandon Rainforest, Chiapas, Mexico

Uso de geotecnologias aplicadas em estudos de modelos de ocupação e conectividade para mamíferos de médio e maior porte no cerrado

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