scholarly journals The Duetting Behavior of Pacific Coast Plain Wrens

The Condor ◽  
2007 ◽  
Vol 109 (3) ◽  
pp. 686-692 ◽  
Author(s):  
Jessica L. Cuthbert ◽  
Daniel J. Mennill

Abstract Abstract. We provide the first detailed analysis of the vocal behavior of Pacific coast Plain Wrens (Thryothorus modestus modestus). Male Plain Wrens sing two categories of song phrase; one phrase is given as a solo song or duet introduction (I-phrases), while the other is sung primarily during duets (M-phrases). Females sing only one category of song phrase, usually during duets (F-phrases). Both sexes have repertoires of their respective song categories. Plain Wren duets show extreme temporal coordination: duets typically begin with male I-phrases, which are followed by the rapid alternation of female F-phrases and male M-phrases. These patterns are congruent with the solo and duet singing behavior of a sister taxon to the Plain Wren, the Canebrake Wren (Thryothorus modestus zeledoni). Our analyses of Plain Wren songs and duets reveal pronounced differences between males and females and contribute to our understanding of the complex duetting behavior of Thryothorus wrens.

1997 ◽  
Vol 18 (4) ◽  
pp. 471-484 ◽  
Author(s):  
Patricia Rockwell ◽  
David B. Buller ◽  
Judee K. Burgoon

ABSTRACTThis study compared vocal features of deception that can be measured by acoustic equipment with vocal features of deception that can be measured perceptually by human coders. As deception researchers have traditionally measured vocal behavior with either acoustic or perceptual methods (but not both), it is uncertain what correspondence, if any, exists between these methods. This study attempted to determine the degree of this correspondence. Deceptive interactions from an earlier study (Burgoon, Buller, Ebesu, & Rockwell, 1994) were used to conduct a detailed analysis of the vocal features of deceptive speech. The vocal samples were analyzed perceptually and acoustically. Results indicated moderate correlations between some acoustic and perceptual variables; neither measurement type, however, proved conclusively superior to the other in discriminating between truth and deception.


2019 ◽  
Vol 70 (4) ◽  
pp. 211-216
Author(s):  
Jim Pateman ◽  
Peter Russell

Two Euphydryas aurinea beckeri females from Sierra Blanca, Malaga, Spain were captured and returned to the U.K.; each laid a single egg batch on Succisa pratensis. Both batches hatched and the resulting larvae were reared through to adulthood. One group of larvae produced butterflies with three different mutations: pupae with spines, legs lacking distal tarsals and claws, and with appendages attached to the genitalia which protruded though the rear of the abdomens in both males and females. The other group of larvae produced normal males and females.


1989 ◽  
Vol 67 (6) ◽  
pp. 1434-1438 ◽  
Author(s):  
Lynn M. Brodsky ◽  
C. Davison Ankney ◽  
Darrell G. Dennis

The influence of social experience on the preferences for a potential mate in a captive population of black ducks, Anas rubripes, and mallards, Anas platyrhynchos, was examined. Birds were reared from hatching with conspecifics (i.e., female black ducks with male black ducks, female mallards with male mallards), or were cross-fostered with the other species (i.e., female black ducks with male mallards, female mallards with male black ducks). Preferences of individuals were tested in a chamber containing caged black ducks and mallards of the opposite sex. In over 90% (100/109) of the trials, males and females preferred the species that they were raised with since hatching, whether they were of the same species or not. These results demonstrate that social experience influences the social preferences of male and female black ducks and mallards.


1953 ◽  
Vol 27 (1-2) ◽  
pp. 81-94 ◽  
Author(s):  
T. Goodey

1. A detailed morphological study has been made of certain nematodes occurring in the basidiomycetous fungi, Entoloma rhodipolium, Pleurotus corticalus, P. ostreatus, Hygrophorus virgineus and Tricholoma cunifolium.2. From the first three of these, males and females of two species of eelworms have been obtained which are placed in the genus Iotonchium Cobb, 1920. One of these is Iotonchium fungorum (Butschli, 1878) n. comb., originally described by Butschli under the name of Tylenchus fungorum', the other is a new species which is named I. bifurcatum n. sp.3. The males of both species have peculiar lobed, dorso-ventrally flattened heads and a poorly developed mouth spear. The bursa is very large, the spicules have posterior prolongations which arc extruded through the cloaca and ventral post-anal papillae are present. A gubernaculum is absent.


Author(s):  
Kendra Klages

My research project focuses on folk inspired music of Poland, England, China, and Ireland. In my applied lessons on clarinet, I studied two neoclassical Polish folk pieces, so the question answered in the research is how the two neoclassical Polish pieces compare to folk inspired pieces from other countries. The pieces chosen for this study are mainly pieces that I have heard before. Therefore, I chose the pieces based upon my familiarity with them. Folk music expresses the sounds and rhythms that represent countries all over the world. Over time these sounds and rhythms evolve to reflect the country at that moment. This study will reflect how folk music was implemented into different pieces with a focus on Polish neoclassical folk pieces versus English, Chinese, and Irish folk pieces. There is a detailed analysis focused on two Polish compositions. While the focus of the other global pieces is to allow one to understand how folk music was being used in compositions specific to the country being studied. The purpose of this study is to understand how folk tunes and characteristics can be expressed through larger compositions, and how the different countries and genres approached that. Furthermore, the study compares Polish folk music to the folk music of other countries and where Polish folk composers stand in originality and experimentalism with the composers of England, China, and Ireland.


Zootaxa ◽  
2018 ◽  
Vol 4429 (1) ◽  
pp. 157
Author(s):  
LUCIANA MARTINS ◽  
MARCOS TAVARES

Paulayellus gustavi, a new sclerodactylid genus and species, is described from the Pacific coast of Panama. The new genus and species is assigned to the subfamily Sclerothyoninae based on a suite of characters, which include the radial and interradial plates of the calcareous ring united at the base only. Paulayellus gen. nov. differs from the other Sclerothyoninae genera in having posterior processesof radial plates undivided. Additionally, differs from Sclerothyone, Thandarum and Neopentamera in having knobbed buttons, plates and cups in the body wall (whereas the body wall is furnished only with tables and plates in Sclerothyone, Temparena and Thandarum, and only with knobbed buttons and plates in Neopentamera). The new genus is, so far, monotypic. The also monotypic genus Neopentamera proved to have the radial and the interradial plates of the calcareous ring united at the base only, as typically found in the Sclerothyoninae, and is therefore transferred to that subfamily. The discovery of a new genus in the Sclerothyoninae and the transfer of Neopentamera required the amendation of the diagnosis for the subfamily. A key to the Sclerothyoninae is given. 


Britannia ◽  
2012 ◽  
Vol 43 ◽  
pp. 45-113 ◽  
Author(s):  
Paul Bidwell

AbstractOccupation at Bainbridge began in the governorship of Agricola. Little is known of the first fort; the visible remains represent a successor fort, established in c.a.d. 85 at the earliest, abandoned under Hadrian and Antoninus Pius, and reoccupied in c. a.d. 160. In the early Severan period, the size of the unit at the fort seems to have been greatly reduced in numbers, and a suite of rooms for an officer was inserted in the principia. Extensive work by cohors VI Nerviorum which took place in c. a.d. 205–7 included the building of new principia, the relocation of the east gate, and probably the addition of an annexe, its wall described in an inscription from the site as a bracchium. The fort was held until the end of the Roman period, by which time the principia had been partly demolished to provide space for a timber building probably accommodating the commanding officer. The aedes and part of the rear range seem to have stood until the ninth or tenth century, when the former was possibly converted into a church. Knowledge of this sequence of occupation depends largely on the results of Brian Hartley's excavations which are published here. The main focus of the report is on the remarkable series of principia, but a review of what is known of the overall archaeology of the fort is also included in the main text. The Supplementary Material (http://journals.cambridge.org/bri) contains a more detailed analysis of some of the other excavations together with various specialist reports.


2019 ◽  
Vol 28 (4) ◽  
pp. 101
Author(s):  
Aneta Michalska-Warias

<p>The article is devoted to the analysis of court punishment practice in the case of offences which have the same statutory punishment. Three groups of such offences are selected: offences punished with imprisonment from 2 to 12 years (group I), offences punished with imprisonment from 3 months to 5 years (group II) and offences punished with imprisonment from 1 month to 3 years (group III). Most of the analysed offences belonged to the group of offences against freedom (including sexual freedom) and the other chosen offences were against other socially cherished values were those quite popular in practice (therefore, the statistical data in their cases are quite representative). The analysed year was 2016. The starting hypothesis was that offences which have identical punishments in the Criminal Code (which means that the lawmaker perceives them as socially harmful in a similar way) will not be treated in such a similar way in practice and in all groups there would be offences which would be punished with visibly more severe and lighter punishments. Detailed analysis of statistical data referring to punishments imposed for the discussed offences confirmed the initial hypothesis, showing also the already known fact that courts tend to impose punishments which are closer to the minimum than to the maximum provided by the lawmaker.</p>


Author(s):  
Alexandra P. Buzhilova ◽  
◽  
Anna S. Kolyasnikova ◽  

We have examined 942 skulls from the collections of the Anuchin Research Institute and Museum of Anthropology (13 craniological collections of the Arctic groups). We have analyzed the total frequency of HFI, used a comparative intergroup analysis, and evaluated the degree of HFI expression and the distribution of the trait according to sex and age. Univariate nonparametric statistics was applied. Results. It was found that the rate of HFI in the Arctic groups is much lower than in other groups of modern Eurasian and American populations. In the combined series, HFI was equally represented in both males and females. However, according to the age distribution, the male and female groups are different. HFI was more frequent in males in the Adultus and Maturus groups and in the Senilis group in females. Discussion. The significantly lower frequency of HFI in the Arctic series relative to the other modern groups show us a low level of metabolic disorders in the Arctic population and a good adaptation to the type of nutrition and living in extreme conditions. The obtained data show the predominance of the trait in the groups of mature and elderly women, and the appearance of HFI of different severity in men regardless of the age category. Probably, in the Arctic samples in women, HFI identifies metabolic disorders due to normal hormonal changes in women aging. HFI should be considered as an indicator of the presence of metabolic disorders in young and mature age in Arctic men group.


2007 ◽  
Vol 23 (1-2) ◽  
pp. 13-20
Author(s):  
Andrey Kurtenkov

It is related leg problems to the realization of the necessity of doing a detailed analysis of the phenotype correlations between body weight and exterior measurements. As a result of the study, lower coefficients have been obtained of the correlation between the girth of the tarso metatarsus on one hand, and the body weight and the girth behind the wings, on the other hand (respectively 0.563 and 0.608), compared with the one between the body weight and the girth behind the wings (0.898). It is advisable in the selection of ostriches to take into consideration the necessity of a higher phenotypic correlation between the girth of the tarso metatarsus on the one hand, and the body weight and the girth behind the wings on the other hand, with a view to preventing leg problems.


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