Mallophagan vectors and the avian filarioids: new subspecies of Pelecitus fulicaeatrae (Nematoda: Filarioidea) in sympatric North American hosts, with development, epizootiology, and pathogenesis of the parasite in Fulica americana (Aves)

1989 ◽  
Vol 67 (11) ◽  
pp. 2821-2833 ◽  
Author(s):  
Cheryl M. Bartlett ◽  
R. C. Anderson

Subspecies of Pelecitus fulicaeatrae (Diesing, 1861) Lopez-Néyra, 1956 are proposed for the first time. The parasite in the original type host, i.e., the Common Coot (Fulica atra L.) in Great Britain, becomes the nominotypical subspecies, namely Pelecitus fulicaeatrae fulicaeatrae (Diesing, 1861) n.subsp.; it requires further taxonomic study. Subspecies in two sympatric North American hosts are described, and transmission by lice (Mallophaga: Amblycera) is suggested to have played a role in their evolution. Pelecitus fulicaeatrae americanae n.subsp. in the American Coot (Fulica americana Gmelin) has narrower lateral alae at midbody in the male, tighter helical twisting and more rotations in the body of the adult female, and a vulva that tends to be closer to the end of the oesophagus than that of Pelecitus fulicaeatrae grisegenae n.subsp. in the Red-necked Grebe (Podiceps grisegena (Boddaert)). Development of P. f. americanae was followed in experimentally infected American Coots. At 20 days postinfection, worms had migrated to the definitive site in the ankles and developed to the adult stage; these worms were sexually immature and also differed in other morphologic ways from mature specimens. Worms at 210 and 265 d resembled those from wild-caught coots, and females contained microfilariae. Pelecitus f. americanae is reported for the first time in Wisconsin, North Dakota, and California and probably is widespread in coots in North America. Both nesting and wintering coots contained three age-classes of adult female worms (too young to produce microfilariae, producing microfilariae, senescent), suggesting that transmission is not restricted to any particular period during the year. In general, no evidence of infection was apparent upon external examination of intact wild-caught infected coots, whereas ankles of intact wild-caught infected grebes were frequently swollen. Upon internal examination of coots, a visible response to worms was also generally not observed. In a few coots, however, worms were within soft, thin-walled capsules and histologic examination revealed chronic proliferative tenosynovitis.

1989 ◽  
Vol 67 (5) ◽  
pp. 1328-1331 ◽  
Author(s):  
Cheryl M. Bartlett ◽  
R. C. Anderson

Breeding populations of Pseudomenopon pilosum (Scopoli, 1763) became established on 10 laboratory-reared juvenile American Coots (Fulica americana Gmelin) initially infested with 5 adult male and 5 adult female lice. Eggs of P. pilosum hatched less than 10 days after deposition and the combined duration of the three nymphal instars was 10–20 days. Nymphs and adults occupied all regions of the body. Pseudomenopon pilosum might thus acquire microfilariae of Pelecitus fulicaeatrae (Diesing, 1861) by simply randomly moving to and feeding on the legs where, in infected coots, the skin-inhabiting microfilariae of P. fulicaeatrae are known mainly to occur. Pseudomenopon pilosum occurred on all of 13 adult coots and three 1-week-old coot chicks collected in June in western Canada where P. fulicaeatrae is enzootic. Third-stage larvae of P. fulicaeatrae were found in adult P. pilosum on two of four adult coots harbouring microfilariae, but prevalence in lice was low (5.5% of 18 lice on one coot and 1.1% of 90 on the second) and only one third-stage larva was present in each infected louse. Four other species of lice were present on adult coots but only one other on 1-week-old chicks. Experiments showed that P. pilosum could occur as a straggler on chickens (Gallus gallus (L.)) and Red-necked Grebes (Podiceps grisegena (Boddaert)) although it did not establish on either species.


1990 ◽  
Vol 68 (11) ◽  
pp. 2306-2309 ◽  
Author(s):  
Richard S. Stemberger

The rotifer Keratella armadura n.sp. is described from a shallow alkaline bog lake from Michigan's lower peninsula. The facet pattern of the dorsal plate is similar to that of the common North American phenotype of Keratella cochlearis and K. taurocephala. The rigid, thickened lorica, long recurving posterior spine, and constriction of the body near the base of the anterior spines is distinctive from known congenors. The species was abundant (> 300 individuals/L) within a well-defined habitat, and appears to have a narrow geographic range. Keratella armadura occurred in spring and summer months and was absent from fall and winter collections. This restricted distribution, if common among rotifers, suggests that many undescribed species still exist in Michigan and in North America.


1972 ◽  
Vol 50 (11) ◽  
pp. 1373-1403 ◽  
Author(s):  
J. Brandlova ◽  
Z. Brandl ◽  
C. H. Fernando

The Cladocera of Ontario were studied from material collected over a wide geographical area. In all 244 lakes and 33 ponds were sampled, some of them more than once.A method for making stained permanent preparations of Cladocera used in our study is described.The genus Daphnia is richly represented. Based on a study of this material we have raised Daphnia pulicaria Forbes from synonymy in the North American fauna. The common limnetic species have been demarcated more satisfactorily. A hitherto undescribed Daphnia species was recorded. Some systematic notes are also included on species of the genera Diaphanosoma, Ceriodaphnia, Eubosmina, and Bosmina.Seventy species of Cladocera were recorded in the present study. This brings the species recorded from Ontario to 78 species; 26 species are recorded from Ontario for the first time. While the limnetic species presently known probably represent a complete list many littoral forms have certainly not been recorded so far.The distribution of the various species in the different parts of Ontario is given. The relative frequency and dominance of species is discussed.


2020 ◽  
pp. 55-59
Author(s):  
H.O. Verbivska

This article tackles the issue of aesthetic experience from the pathologized everyday discourse viewpoint in the system of relations between I and symbolic order, where transgressed and close to symbolic death I is predominant. The stage, in which I, crossing the symbolic borders, stay readable, appears to be the process of continuous constituting the aesthetic experience and its transforming into the primordial a priori structure of everyday discourse. The problem lies deeply in the preserving of evanescent borders which are said to exist in the cultural palpability and simultaneously to be exiled from the system. The article exemplifies pathological discourses by referring to the Beksinski' works, namely his numerous ways of articulating the ineffable. However, articulated ineffable, similarly to such culturally conditioned reactions as abjection and melancholia, declares double death of the discursive subject: the first time when the separation from primordial presymbolic world takes place and the second time during problematizing the symbolic borders and paradoxical immortalization concerning postulated frontiers. The aim of this article is to dig out kaleidoscope of images and sub-images from Beksinski' works through the motive of crucifixion resulting in the specific value of Christ's body and chimerical things inside the dehumanized catastrophic space. It is demonstrated how pathological discourse of melancholia could be intertwined with the discourse of abjection in the common point of transgressing the limits, making the symbolic space full of details indicating the risk of Ego being disintegrated, staying inside the transgressed limits as constituting aesthetical experience. Inexplicability of terrible post-apocalyptic world is readable via symbolic coordinates insofar as the main primal object (the body of Christ) occurs to be banished. Appearing of aesthetic experience is paralleled to the stages of psychosexual development in the existence of symbolic being where in opposition to classical freudism maternal authority is accentuated. That's how Kristevan style of psychoanalytic ruminations looks like.


This volume represents state-of-the-art research on the semantics of nouns. It offers detailed and systematic analyses of scores of individual nouns across many different conceptual domains—‘people’, ‘beings’, ‘creatures’, ‘places’, ‘things’, ‘living things’, and ‘parts of the body and parts of the person’. A range of languages, both familiar and unfamiliar, is examined. These include Australian Aboriginal languages (Pitjantjatjara/Yankunytjatjara), (Mandarin) Chinese, Danish, English, French, German, Koromu (a Papuan language), Russian, Polish, and Solega (a Dravidian language). Each rigorous and descriptively rich analysis is fully grounded in a unified methodological framework consistently employed throughout the volume, and each chapter not only relates to central theoretical issues specific to the semantic analysis of the domain in question, but also empirically investigates the different types of meaning relations holding between nouns, such as meronymy, hyponymy, taxonomy, and antonymy. This is the first time that the semantics of typical nouns has been studied in such breadth and depth, and in such a systematic and coherent manner. The collection of studies shows how in-depth meaning analysis anchored in a cross-linguistic and cross-domain perspective can lead to extraordinary and unexpected insights into the common and particular ways in which speakers of different languages conceptualize, categorize, and order the world around them. This unique volume brings together a new generation of semanticists from across the globe, and will be of interest to researchers in linguistics, psychology, anthropology, biology, and philosophy.


2010 ◽  
Vol 47 (3) ◽  
pp. 170-178 ◽  
Author(s):  
M. Bruňanská ◽  
H. Fagerholm ◽  
F. Moravec ◽  
Z. Vasilková

Abstract The fine structure of the buccal capsule of the adult female nematode Anguillicoloides crassus (Spirurina) was studied for the first time. Results are based on serial section (longitudinal and transverse) light and transmission electron microscopy. The buccal capsule of A. crassus is a cuticular-lined structure. It can be divided into three main parts: cheilostom, gymnostom and stegostom. The cheilostom is the anterior region of the buccal capsule with the cuticular lining continuous with the body wall cuticle and underlain by epidermal syncytia. The gymnostom is a cuticular region with portions of it very electron dense and underlain by arcade syncytia. A dense circumoral cylinder together with the circumpharyngeal ring represent the prominent characters of the gymnostom. The stegostom is formed by anterior pharyngeal cuticle underlain by muscular radial cells and epithelial marginal cells. The cephalic cuticle of A. crassus makes a direct contact with the pharyngeal cuticle at the base of the circumoral cylinder, within a circumpharyngeal ring containing projections of pharyngeal muscular and marginal cells. The circumoral cylinder, circumpharyngeal ring and pharynx are connected to the body epidermis by junctional complexes. The buccal capsule includes occasionally 3 projections of the pharynx evidently observed in serial cross sections. These ultrastructural characters may provide useful data for comparative, functional as well as evolutionary studies within the Chromadorea.


1987 ◽  
Vol 14 (1) ◽  
pp. 85-88
Author(s):  
CHARLOTTE M PORTER

A curious error affects the names of three North American clupeids—the Alewife, American Shad, and Menhaden. The Alewife was first described by the British-born American architect, Benjamin Henry Latrobe in 1799, just two years after what is generally acknowledged as the earliest description of any ichthyological species published in the United States. Latrobe also described the ‘fish louse’, the common isopod parasite of the Alewife, with the new name, Oniscus praegustator. Expressing an enthusiasm for American independence typical of his generation, Latrobe humorously proposed the name Clupea tyrannus for the Alewife because the fish, like all tyrants, had parasites or hangers-on.


2010 ◽  
Vol 4 (supplement) ◽  
pp. 46-63
Author(s):  
Vidar Thorsteinsson

The paper explores the relation of Michael Hardt and Antonio Negri's work to that of Deleuze and Guattari. The main focus is on Hardt and Negri's concept of ‘the common’ as developed in their most recent book Commonwealth. It is argued that the common can complement what Nicholas Thoburn terms the ‘minor’ characteristics of Deleuze's political thinking while also surpassing certain limitations posed by Hardt and Negri's own previous emphasis on ‘autonomy-in-production’. With reference to Marx's notion of real subsumption and early workerism's social-factory thesis, the discussion circles around showing how a distinction between capital and the common can provide a basis for what Alberto Toscano calls ‘antagonistic separation’ from capital in a more effective way than can the classical capital–labour distinction. To this end, it is demonstrated how the common might benefit from being understood in light of Deleuze and Guattari's conceptual apparatus, with reference primarily to the ‘body without organs’ of Anti-Oedipus. It is argued that the common as body without organs, now understood as constituting its own ‘social production’ separate from the BwO of capital, can provide a new basis for antagonistic separation from capital. Of fundamental importance is how the common potentially invents a novel regime of qualitative valorisation, distinct from capital's limitation to quantity and scarcity.


2012 ◽  
Vol 41 (3) ◽  
pp. 16-21
Author(s):  
Tony Burke

Scholars interested in the Christian Apocrypha (CA) typically appeal to CA collections when in need of primary sources. But many of these collections limit themselves to material believed to have been written within the first to fourth centuries CE. As a result a large amount of non-canonical Christian texts important for the study of ancient and medieval Christianity have been neglected. The More Christian Apocrypha Project will address this neglect by providing a collection of new editions (some for the first time) of these texts for English readers. The project is inspired by the More Old Testament Pseudepigrapha Project headed by Richard Bauckham and Jim Davila from the University of Edinburgh. Like the MOTP, the MCAP is envisioned as a supplement to an earlier collection of texts—in this case J. K. Elliott’s The Apocryphal New Testament (Oxford 1991), the most recent English-language CA collection (but now almost two decades old). The texts to be included are either absent in Elliott or require significant revision. Many of the texts have scarcely been examined in over a century and are in dire need of new examination. One of the goals of the project is to spotlight the abilities and achievements of English (i.e., British and North American) scholars of the CA, so that English readers have access to material that has achieved some exposure in French, German, and Italian collections.


Author(s):  
Anne Phillips

No one wants to be treated like an object, regarded as an item of property, or put up for sale. Yet many people frame personal autonomy in terms of self-ownership, representing themselves as property owners with the right to do as they wish with their bodies. Others do not use the language of property, but are similarly insistent on the rights of free individuals to decide for themselves whether to engage in commercial transactions for sex, reproduction, or organ sales. Drawing on analyses of rape, surrogacy, and markets in human organs, this book challenges notions of freedom based on ownership of our bodies and argues against the normalization of markets in bodily services and parts. The book explores the risks associated with metaphors of property and the reasons why the commodification of the body remains problematic. The book asks what is wrong with thinking of oneself as the owner of one's body? What is wrong with making our bodies available for rent or sale? What, if anything, is the difference between markets in sex, reproduction, or human body parts, and the other markets we commonly applaud? The book contends that body markets occupy the outer edges of a continuum that is, in some way, a feature of all labor markets. But it also emphasizes that we all have bodies, and considers the implications of this otherwise banal fact for equality. Bodies remind us of shared vulnerability, alerting us to the common experience of living as embodied beings in the same world. Examining the complex issue of body exceptionalism, the book demonstrates that treating the body as property makes human equality harder to comprehend.


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