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40 results for “trapped populations”
Supplementary material 3 from: Duron Q, Cornulier T, Vidal E, Bourguet E, Ruffino L (2020) Combining live and lethal trapping to inform the management of alien invasive rodent populations in a tropical montane forest. NeoBiota 63: 101-125. https://doi.org/10.3897/neobiota.63.53811
Mean distances (± se) of trapped rats from the edge of the removal area during the four trapping sessions
Supplementary material 4 from: Duron Q, Cornulier T, Vidal E, Bourguet E, Ruffino L (2020) Combining live and lethal trapping to inform the management of alien invasive rodent populations in a tropical montane forest. NeoBiota 63: 101-125. https://doi.org/10.3897/neobiota.63.53811
Distances (in meters) travelled between rats' home range centers in the CMR area and their recapture in the removal area for 27 individuals
Subspecies and Distribution. T.n.napuF.Cuvier,1822—SMyanmar,Thai/MalayPeninsula,islandsoffWMalayPeninsula(Langkawi&Pangkor),Borneo,SSumatra,BangkaI,islandsoffBorneo(Laut&Serasan). T.n.bangue:Chasen&Kloss,1931—BanggiIandBalembanganI,offNBorneo. T.n.bunguranensisMiller,1901—NatunaIs(=Bunguran),oftWBorneo. T.n.neubronneriSody,1931—NSumatra. T.n.nmiasisLyon,1916—NiasI,offWSumatra. T.n.rufulusMiller,1900—TiomanI,offEMalayPeninsula,RiauandLinggaArchipelagos. T. n. terutus Thomas & Wroughton, 1909 — Terutau I, off W Malay Peninsula. The species was recently reconfirmed for Singapore. Maps that include Vietnam, Cambodia, and Laos in the distribution range are based on the earlier assumption that 7. versicolor was a subspecies of 1. napu. Subsequent studies have indicated that 7. versicolor is a distinct species, and that the range of 1. napu therefore does not extend into Cambodia, Laos, and Vietnam. The northern limit on the Thai-Malay peninsula is not well defined. Specimens of 1. napu have been collected from as far north as Bankachon in southern Myanmar (10° 08" N), but despite fairly intensive camera-trapping in Kui Buri National Park, Thailand (12° N), 7. napu has not been photographed there. At the northern margin ofits range, it is generally rare. It has been reported, for example, that during the flooding of the Chiew Larn Reservoir (Surat Thani Province; about 9° N, 98° 45' E), only six 7. napu were rescued compared with 172 71. kanchil. This area is the transition zone from wetter evergreen forest to drier deciduous types, and it might be that 7° napu is not well adapted to the drier forest types towards the northern limit ofits range. There are unconfirmed reports of the species on Java, where it may have been confused with one of the two color morphs of 7. javanicus. As explained in the Taxonomy section, the subspecific status of the populations of several islands remains unclear. in Tragulidae
Subspecies and Distribution. T.n.napuF.Cuvier,1822—SMyanmar,Thai/MalayPeninsula,islandsoffWMalayPeninsula(Langkawi&Pangkor),Borneo,SSumatra,BangkaI,islandsoffBorneo(Laut&Serasan). T.n.bangue:Chasen&Kloss,1931—BanggiIandBalembanganI,offNBorneo. T.n.bunguranensisMiller,1901—NatunaIs(=Bunguran),oftWBorneo. T.n.neubronneriSody,1931—NSumatra. T.n.nmiasisLyon,1916—NiasI,offWSumatra. T.n.rufulusMiller,1900—TiomanI,offEMalayPeninsula,RiauandLinggaArchipelagos. T. n. terutus Thomas & Wroughton, 1909 — Terutau I, off W Malay Peninsula. The species was recently reconfirmed for Singapore. Maps that include Vietnam, Cambodia, and Laos in the distribution range are based on the earlier assumption that 7. versicolor was a subspecies of 1. napu. Subsequent studies have indicated that 7. versicolor is a distinct species, and that the range of 1. napu therefore does not extend into Cambodia, Laos, and Vietnam. The northern limit on the Thai-Malay peninsula is not well defined. Specimens of 1. napu have been collected from as far north as Bankachon in southern Myanmar (10° 08" N), but despite fairly intensive camera-trapping in Kui Buri National Park, Thailand (12° N), 7. napu has not been photographed there. At the northern margin ofits range, it is generally rare. It has been reported, for example, that during the flooding of the Chiew Larn Reservoir (Surat Thani Province; about 9° N, 98° 45' E), only six 7. napu were rescued compared with 172 71. kanchil. This area is the transition zone from wetter evergreen forest to drier deciduous types, and it might be that 7° napu is not well adapted to the drier forest types towards the northern limit ofits range. There are unconfirmed reports of the species on Java, where it may have been confused with one of the two color morphs of 7. javanicus. As explained in the Taxonomy section, the subspecific status of the populations of several islands remains unclear.
Data from: Trapped within the city: Integrating demography, time since isolation and population-specific traits to assess the genetic effects of urbanization
Urbanization is a severe form of habitat fragmentation that can cause many species to be locally extirpated and many others to become trapped and isolated within an urban matrix. The role of drift in reducing genetic diversity and increasing genetic differentiation is well recognized in urban populations. However, explicit incorporation and analysis of the demographic and temporal factors promoting drift in urban environments are poorly studied. Here, we genotyped 15 microsatellites in 320 fire salamanders from the historical city of Oviedo (Est. 8th century) to assess the effects of time since isolation, demographic history (historical effective population size; Ne) and patch size on genetic diversity, population structure and contemporary Ne. Our results indicate that urban populations of fire salamanders are highly differentiated, most likely due to the recent Ne declines, as calculated in coalescence analyses, concomitant with the urban development of Oviedo. However, urbanization only caused a small loss of genetic diversity. Regression modelling showed that patch size was positively associated with contemporary Ne, while we found only moderate support for the effects of demographic history when excluding populations with unresolved history. This highlights the interplay between different factors in determining current genetic diversity and structure. Overall, the results of our study on urban populations of fire salamanders provide some of the very first insights into the mechanisms affecting changes in genetic diversity and population differentiation via drift in urban environments, a crucial subject in a world where increasing urbanization is forecasted.
Data from: Trapped within the city: Integrating demography, time since isolation and population-specific traits to assess the genetic effects of urbanization
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Figure 7 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean
Figure 7. Seasonal changes in the flux of adult females, lipid accumulation (upper panels) and gonad maturation (lower panels) composition (stage I−III) of C6F (a, d) Calanus hyperboreus; (b, e) Metridia longa; and (c, f) Paraeuchaeta glacialis.
Figure 4 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean
Figure 4. Seasonal changes in the copepod flux and species composition at St. NAPt from October 2010 to September 2012.
Figure 6 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean
Figure 6. Seasonal changes in the flux and copepodid stage composition of the four large calanoid copepods: (a) Calanus hyperboreus; (b) Metridia longa; (c) Paraeuchaeta glacialis; and (d) Heterorhabdus norvegicus.
Figure 2 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean
Figure 2. Seasonal changes in depth (a) and temperature (b) of the sediment trap at St. NAPt from October 2010 to September 2012. The current velocity at 188 and 275 m at St. NAPt (c) was estimated by a physical ocean general circulation model.
Figure 1 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean
Figure 1. The location of St. NAPt (Northwind Abyssal Plain) in the western Arctic Ocean where the sediment trap was moored at a depth of approximately 184–260 m from October 2010 to September 2012.
Figure 5 in Seasonal changes in the population structure of dominant planktonic copepods collected using a sediment trap moored in the western Arctic Ocean
Figure 5. (a) Seasonal changes in the flux and copepodid stage composition of the dominant copepod Oncaea parila (Poecilostomatoida). *C6F with egg sacs occurred. (b) The relationship between O. parila flux and the total mass flux. A positive relationship was detected in 2010–2011 (first year).
Supplementary material 1 from: Duron Q, Cornulier T, Vidal E, Bourguet E, Ruffino L (2020) Combining live and lethal trapping to inform the management of alien invasive rodent populations in a tropical montane forest. NeoBiota 63: 101-125. https://doi.org/10.3897/neobiota.63.53811
Density of rats
Supplementary material 2 from: Duron Q, Cornulier T, Vidal E, Bourguet E, Ruffino L (2020) Combining live and lethal trapping to inform the management of alien invasive rodent populations in a tropical montane forest. NeoBiota 63: 101-125. https://doi.org/10.3897/neobiota.63.53811
Rat abundance and density, rat capture probabilities
Figure 4 in Trapping Records of Fruit Fly Pest Species (Diptera: Tephritidae) on Oahu (Hawaiian Islands): Analysis of Spatial Population Trends
Figure 4. Mean captures per trap per day of C. capitata in trimedlure traps (2006–2008) at each trapping site on Oahu.
Figure 3 in Trapping Records of Fruit Fly Pest Species (Diptera: Tephritidae) on Oahu (Hawaiian Islands): Analysis of Spatial Population Trends
Figure 3. Mean captures per trap per day of B. dorsalis in methyl eugenol traps (2006–2008) at each trapping site on Oahu.
Figure 2 in Trapping Records of Fruit Fly Pest Species (Diptera: Tephritidae) on Oahu (Hawaiian Islands): Analysis of Spatial Population Trends
Figure 2. Mean captures per trap per day of B. cucurbitae in cue-lure traps (2006–2008) at each trapping site on Oahu.
Data for: Estimation of density distribution in unmarked populations using camera traps
<p>Reliable estimates of species distribution and density are essential to ecology. Camera traps have revolutionized wildlife monitoring, and camera-trap data are increasingly used to study animal distribution and density. </p> <p>We propose a general framework and present a statistical model to estimate the distribution and density of species for which individuals lack identifying marks. Numbers recorded at traps allow spatial variation in density to be modelled, while distances of detected animals from the cameras allow correction for missed animals in the detection sector, using distance sampling.</p> <p>We test the model by simulating a camera-trap survey of a population of single animals, and we apply the model to data from a field study of Reeves's muntjac. The simulation indicated that the estimates of population density were unbiased, and the model performed well in depicting spatial variation in density. In the field study, the model estimated that the overall population density of Reeves's muntjac was 4.1 ind/km<sup>2</sup>, and mapped its density distribution across the study area.</p> <p>We provide a method to estimate unmarked species' density distribution using camera-trap data. Application of the model can help investigate the distribution and density of many ground-dwelling solitary animal populations lacking individually recognizable markings. We expect our method to provide an effective means for wildlife monitoring.</p>
Data for: Estimation of density distribution in unmarked populations using camera traps
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Figure 1 in Trapping Records of Fruit Fly Pest Species (Diptera: Tephritidae) on Oahu (Hawaiian Islands): Analysis of Spatial Population Trends
Figure 1. Map of trapping sites on Oahu (2006–2008), with habitat at each site.
TRAP analysis of somatic muscle populations in Drosophila embryos
GEO Series GSE137443. Drosophila melanogaster. 54 samples. Type: Expression profiling by array.
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