scholarly journals Efficiency of pitfalls versus live traps in enumeration of populations of Microtus pennsylvanicus

1984 ◽  
Vol 62 (5) ◽  
pp. 758-765 ◽  
Author(s):  
Rudy Boonstra ◽  
F. Helen Rodd
Keyword(s):  
Time Lag ◽  
Microtus Pennsylvanicus ◽  
Pitfall Traps ◽  
First Time ◽  
Two Populations ◽  
Microtus Townsendii

Two populations of Microtus pennsylvanicus were trapped simultaneously with Longworth live traps and pitfall traps over a 3- and a 4-year period. The number of voles enumerated by live traps was usually between 2 and 4 times that enumerated by pitfalls. Of the 3671 new voles caught, 53.7% were first caught in live traps. Pitfalls captured more of the juveniles first (56%) and live traps captured more of the adults first (76%). Animals entering live traps for the first time were about 4 g heavier than those entering pitfalls for the first time. The time lag between entry first into pitfalls and then to live traps was 4–6 weeks; the time lag between entry first in live traps and then to pitfalls was 2–7 weeks. Approximately 18% of all voles never entered live traps. Live traps captured about 83% (N = 747) of all dispersers whereas pitfalls captured about 46%. We conclude that live traps were much more effective than pitfalls in capturing this species. These results are very different from those reported from studies on Microtus townsendii.

scholarly journals Crustacea, Isopoda, Oniscidea Latreille, 1802: new continent record and distribution extension in Brazil

Check List ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 217 ◽  
Author(s):  
Mariana Juventina Magrini ◽  
Paula Beatriz Araujo ◽  
Marcio Uehara-Prado
Keyword(s):  
Rio Grande ◽  
Sao Paulo ◽  
The State ◽  
Southeastern Brazil ◽  
Pitfall Traps ◽  
São Paulo ◽  
Undescribed Species ◽  
Rio Grande Do Sul ◽  
Serra Do Mar ◽  
First Time

Terrestrial Isopods were sampled in four protected Atlantic Forest areas located in Serra do Mar, state of São Paulo, southeastern Brazil. A total of 2,217 individuals of six species (Atlantoscia sp., Benthana werneri, Pseudodiploexochus tabularis, Pudeoniscus obscurus, Styloniscus spinosus and Trichorhina sp.) were captured in pitfall traps. The exotic species S. spinosus is recorded for the first time for the Americas. Another introduced species, P. tabularis, previously recorded only from the state of Rio Grande do Sul, had its geographic distribution extended to the state of São Paulo. The most abundant isopods in this study belong to an undescribed species of Atlantoscia.

scholarly journals Donor-intrinsic variables determine mobilization efficiency: analyses from a cohort of sixty twice-mobilized stem cell donors

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Soo-Zin Kim-Wanner ◽  
Seo-Youn Lee ◽  
Erhard Seifried ◽  
Halvard Bonig
Keyword(s):  
Stem Cell ◽  
Time Lag ◽  
Graft Function ◽  
Anecdotal Evidence ◽  
Cell Compartment ◽  
Small Minority ◽  
Stem Cell Compartment ◽  
Poor Graft Function ◽  
Genetically Determined ◽  
First Time

Abstract Background Healthy volunteer registry donors have become the backbone of stem cell transplantation programs. While most registrants will never become actual donors, a small minority are called upon twice, most commonly for the same patient because of poor graft function. Anecdotal evidence provides no hard reasons to disallow second-time mobilized apheresis, but few centers have treated enough two-time donors for definitive conclusions. Moreover, for reasons unknown, the efficiency of G-CSF varies greatly between donations. Methods Comparison of outcomes of first vs. second donations can formally confirm G-CSF responsiveness as intrinsically, likely genetically, determined. In our database, we identified 60 donors (1.3%) who received two cycles of G-CSF 24 days to 4 years apart and systematically compared mobilization outcomes. Results First and second mobilization and collection proceeded without severe or unusual adverse effects. First-time mobilization efficiency was highly predictive of second-time mobilization. Neither mobilization efficiency nor time lag between donations affected the similarity of first- and second-time mobilization outcomes. Conclusions With the caveat that only donors with an unremarkable first donation were cleared for a second, our data indicate that a second donation is feasible, equally tolerable as a first donation, and efficient. Moreover, the data strongly support the notion of donor-intrinsic variables dictating mobilization response and argue against relevant damage to the stem cell compartment during mobilization with rhG-CSF.

scholarly journals Ants (Hymenoptera: Formicidae) from an Amazonian fragmented landscape, Juara, Mato Grosso, Brazil, with new records of ant species

2018 ◽  
Vol 58 ◽  
pp. e20185840
Author(s):  
Ricardo Eduardo Vicente ◽  
Alexandre Casadei Ferreira ◽  
Rogério Conceição Lima dos Santos ◽  
Lívia Pires do Prado
Keyword(s):  
Transition Zone ◽  
New Records ◽  
The State ◽  
Fragmented Landscape ◽  
General Knowledge ◽  
Pitfall Traps ◽  
Mato Grosso ◽  
Brazilian State ◽  
First Time

The state of Mato Grosso is the 3rd largest Brazilian state, is covered with three major Brazilian biomes, including the Pantanal, Cerrado, and Amazonia. To date, 449 ant species are recorded in literature for the state. In the present work, we documented the ants sampled along a fragmented landscape, in the municipality of Juara, in the Cerrado-Amazon transition zone in the state of Mato Grosso, Brazil. The ant species were captured with Pitfall traps installed in 20 trails with 10 traps in each (totaling 200). Our results show 151 species, belonging to 43 genera and eight subfamilies, of which 28 species were recorded for the first time in the state and five species recorded for the first time in Brazil. Most genera collected were Pheidole Westwood, 1839 (45 species) followed by Crematogaster Lund, 1831 (11 species). By highlighting species recorded for the first time in state of Mato Grosso and Brazil, we hope to encourage new discoveries and increase the general knowledge of the ant fauna of different biomes in the region.

scholarly journals High Genetic Differentiation among European White Oak Species (Quercus spp.) at a Dehydrin Gene

2015 ◽  
Vol 43 (2) ◽  
pp. 582-588 ◽  
Author(s):  
Iacob CRĂCIUNESC ◽  
Barbara VORNAM ◽  
Ludger LEINEMANN ◽  
Reiner FINKELDEY ◽  
Neculae ȘOFLETEA ◽  
...  
Keyword(s):  
Genetic Differentiation ◽  
Related Species ◽  
Population Level ◽  
Quercus Petraea ◽  
White Oak ◽  
Closely Related Species ◽  
Significant Differentiation ◽  
Dehydrin Gene ◽  
First Time ◽  
Two Populations

Dehydryn genes are involved in plant response to environmental stress and may be useful to examine functional diversity in relation to adaptive variation. Recently, a dehydrin gene (DHN3) was isolated in Quercus petraea and showed little differentiation between populations of the same species in an altitudinal transect. In the present study, inter- and intraspecific differentiation patterns in closely related and interfertile oaks were investigated for the first time at the DHN3 locus. A four-oak-species stand (Quercus frainetto Ten., Q. petraea (Matt.) Liebl., Q. pubescens Willd., Q. robur L.) and two populations for each of five white oak species (Q. frainetto Ten., Q. petraea (Matt.) Liebl., Q. pubescens Willd., Q. robur L. and Q. pedunculiflora K. Koch) were analyzed. Three alleles shared by all five oak species were observed. However, only two alleles were present in each population, but with different frequencies according to the species. At population level, all interspecific pairs of populations showed significant differentiation, except for pure Q. robur and Q. pedunculiflora populations. In contrast, no significant differentiation (p > 0.05) was found among conspecific populations. The DHN3 locus proved to be very useful to differentiate Q. frainetto and Q. pubescens from Q. pedunculiflora (FST = 0.914 and 0.660, respectively) and Q. robur (FST = 0.858 and 0.633, respectively). As expected, the lowest level of differentiation was detected between the most closely related species, Q. robur and Q. pedunculiflora (FST = 0.020). Our results suggest that DHN3 can be an important genetic marker for differentiating among European white oak species.

scholarly journals First records of Brachythemis impartita in peninsular Italy (Odonata: Libellulidae)

2017 ◽  
pp. 133-136
Author(s):  
Emanuele Guido Condello ◽  
Edoardo Razzetti ◽  
Cristiano Liuzzi ◽  
Vittoria D’Agostino ◽  
Fabio Mastropasqua
Keyword(s):  
Habitat Preferences ◽  
Artificial Lake ◽  
Northward Expansion ◽  
First Time ◽  
Two Populations

Two populations of Brachythemis impartita (Karsch, 1890) are here reported in peninsular Italy. The species was found for the first time in 2015 in Calabria in the area of the Angitola artificial lake (Maierato and Monterosso Calabro municipalities) not far from the Tyrrhenian coast. In 2016 the species was also observed in southern Apulia, along the banks of two artificial lagoons in the municipality of Ugento. Information are provided that confirm the habitat preferences of the species and a northward expansion.

scholarly journals A new Palaearctic species of the subgenus Lunatipula (Diptera, Tipulidae) from the West Caucasus with a survey of the caucasica species group

ZooKeys ◽  
2021 ◽  
Vol 1048 ◽  
pp. 145-175
Author(s):  
Vladimir I. Lantsov ◽  
Valentin E. Pilipenko
Keyword(s):  
New Species ◽  
Parallel Evolution ◽  
Distribution Patterns ◽  
Species Group ◽  
Palaearctic Species ◽  
The West ◽  
The Caucasus ◽  
Males And Females ◽  
First Time ◽  
Two Populations

The caucasica species group in the subgenus Lunatipula is redefined and now consists of five species native to the Caucasus. Tipula (L.) eleniyasp. nov. is described as new to science, and variations in the male terminalia in two populations are noted. Two subspecies (quadridentataquadridentata and quadridentatapaupera) are elevated to species rank. Detailed photo’s complement the descriptions of all five species (caucasica, eleniya, paupera, quadridentata, talyshensis), and data on ecology and distribution patterns are included as well as identification keys to males and females. Tipula caucasica is recorded from the West Caucasus and Tipula quadridentata is recorded from Dagestan (Russia) for the first time. Parallel evolution is traced in the male terminalia of the new species and in several non caucasica species group of Palaearctic Lunatipula.

scholarly journals RPC-MIP observations at comet 67P/Churyumov-Gerasimenko explained by a model including a sheath and two populations of electrons

2019 ◽  
Vol 630 ◽  
pp. A41 ◽  
Author(s):  
G. Wattieaux ◽  
N. Gilet ◽  
P. Henri ◽  
X. Vallières ◽  
L. Bucciantini
Keyword(s):  
Collisionless Plasma ◽  
Plasma Sheath ◽  
Sheath Thickness ◽  
Mutual Impedance ◽  
Cometary Plasma ◽  
Rosetta Mission ◽  
Impedance Probe ◽  
First Time ◽  
Two Populations ◽  
Comet 67P

The response of the mutual impedance probe RPC-MIP on board Rosetta orbiter electrostatically modeled considering an unmagnetized and collisionless plasma with two Maxwellian electron populations. A vacuum sheath surrounding the probe was considered in our model in order to take the ion sheath into account that is located around the probe, which is immersed in the cometary plasma. For the first time, the simulated results are consistent with the data collected around comet 67P/Churyumov-Gerasimenko (67P), but strong discrepancies were identified with the previous simulations that neglected the plasma sheath around the probe. We studied the influence of the sheath thickness and of the electron populations. This work helps to better understand the initially unexpected responses of the mutual impedance probe that were acquired during the Rosetta mission. It suggests that two electron populations exist in the cometary plasma of 67P.

scholarly journals First standardized inventory of ants (Hymenoptera: Formicidae) in the natural grasslands of Paraná: New records for Southern Brazil

2018 ◽  
Vol 58 ◽  
pp. 12 ◽  
Author(s):  
Weslly Franco ◽  
Rodrigo Machado Feitosa
Keyword(s):  
Species Richness ◽  
New Records ◽  
Forest Fragments ◽  
Pitfall Traps ◽  
Southern Brazil ◽  
Conservation Units ◽  
Natural Grasslands ◽  
Taxonomic Novelties ◽  
First Time ◽  
Ant Diversity

Despite the large number of studies investigating ant diversity in Brazilian biomes, no ant-related studies have been carried out in Campos Gerais, a grassland physiognomy in Paraná state. The present study is the first inventory of the ant fauna in one of the few conservation units protecting the Campos Gerais landscape, the Guartelá State Park (PEG). Sixty samples were collected from different habitats within PEG using pitfall traps. Qualitative samples of leaf litter were collected from forest fragments and submitted to Winkler extractors. In addition, manual qualitative sampling was carried out in the various physiognomies within the PEG. A total of 163 species was collected and sorted into 43 genera and nine subfamilies. Five genera and 28 species were recorded for the first time in the state of Paraná. Out of these, 17 species were also recorded for the first time in the Southern Region of Brazil and two were recorded for the first time to the country. The significant species richness in the PEG and the high number of new records is a strong sign of this ecosystem’s potential to reveal taxonomic novelties. These results suggest that PEG, and the Campos Gerais as a whole, should be the target of greater conservation efforts to preserve native remnants.

Développement postnatal de l'activité motrice chez Microtus pennsylvanicus

1978 ◽  
Vol 56 (5) ◽  
pp. 1092-1102 ◽  
Author(s):  
François-Marie Pépin ◽  
Georg Baron
Keyword(s):  
Temporal Distribution ◽  
Microtus Pennsylvanicus ◽  
The Body ◽  
Transitional Stage ◽  
Developmental Sequences ◽  
Three Stages ◽  
Tunnel System ◽  
First Time

Three litters of Microtus pennsylvanicus were observed in an artificial tunnel system from birth to 21 days of age. Isolated movements, positions and rotations of the body, and linear locomotion were recorded. Movements could be classified into three stages or five periods based on their first appearance. 'Nest' stage (0–7 days) with period I (0–2 days) in which most isolated movements and rotations occurred and period II (3–7 days) which was characterized by 'crawling'; the 'transitional' stage (8–10 days) or period III in which the pups left the nest for the first time; the 'outside of nest' stage (11–21 days) which included period IV (11–12 days), characterized by coordinated walking and frequent visits to the tunnels, and period V (from 13 days on) in which the animals visited the surface and mastered the basic locomotory repertoire found in adults. Development of rotation movements could also be divided into four distinct periods based on the relative frequencies of their occurrence. Although they are based on different criteria, the two types of developmental sequences give basically the same temporal distribution.

Phénologie de la floraison de populations diploïdes et tétraploïdes d'Anthoxanthum alpinum et d'Anthoxanthum odoratum

1988 ◽  
Vol 66 (11) ◽  
pp. 2258-2264 ◽  
Author(s):  
François Felber
Keyword(s):  
Time Lag ◽  
Population Level ◽  
Southern Europe ◽  
Polyploid Complex ◽  
Individual Level ◽  
In Situ Study ◽  
The Individual ◽  
First Time ◽  
Experimental Garden

The phenology of flowering was studied in an experimental garden, on diploid and tetraploid populations of Anthoxanthum alpinum A. & D. Löve and of A. odoratum L. of central and southern Europe and also in situ in a contact zone between diploid A. alpinum and tetraploid A. odoratum. In the experimental garden, the phenological parameters were studied at the individual level (onset of flowering) and at the population level (dates on which each population showed opened anthers for the first time on 40, 50, 60, 70, or 80% of the plants). Anthoxanthum alpinum flowered earlier than A. odoratum, regardless of the respective ploidy level of the two taxa. The average time lag between the appearance of the stigma and that of the stamens was about 2 days for the two A. alpinum taxa and 6 days for those of A. odoratum. Flowering was spread over the longest period for the tetraploid A. odoratum, which shows the great phenological variability of this taxon. The in situ study confirms the precocity of A. alpinum. The phenological differentiation within this polyploid complex probably coincides with the individualization of the two diploid taxa but precedes their respective polyploidization phases.

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