scholarly journals A systematic review of tapeworms (Plathelminthes, Cestoda) of domestic ducks (Anas platyrhynchos dom.)

2021 ◽  
Vol 12 (2) ◽  
pp. 353-361
Author(s):  
F. H. Rzayev ◽  
A. M. Nasirov ◽  
E. K. Gasimov

Tapeworms of domestic ducks (Anas platyrhynchos dom.) causing helminthiasis and serious damage to the hosts, cause economic damage in the poultry industry. Helminthological research devoted to the study of the parasite fauna, including tapeworms of domestic ducks, has been carried out in many countries. But there is no review information on the study of the helminth fauna of domestic ducks. We take our own materials and literature data and summarise the information on cestode parasites of Anas platyrhynchos dom., which have been recorded in the world until 2020. Each species is provided with the following data: scientific name, authority and year, intermediate and auxiliary hosts, habitat in the host body, collecting localities and geographic distribution, prevalence and intensity of infection and literature sources. Based on our own research and analysis of literature data, it was revealed that hitherto there are 419 species of helminths (Trematoda – 213, Cestoda – 89, Nematoda – 79, Acanthocephala – 11) recorded parasitising domestic ducks. The tapeworms found in Azerbaijan belong to four families (Dilepididae – 3, Hymenolepididae – 68, Davaineidae – 13, Diphyllobothriidae – 5). In Azerbaijan, 11 out of 89 species of helminths have been found in domestic ducks. Six of them were also noted in the course of our helminthological studies. The cestoda Diorchis inflata was recorded the first time in domestic ducks in Azerbaijan. Most species of cestodes were found in the north-eastern regions of Azerbaijan (Shabran – 11 species, Khachmaz – 6 species) and the southern region (Astara – 4 species). All of these areas are located on the shores of the Caspian Sea and are located on the annual migration route of wild birds involved in the spread of cestodes, which are considered biohelminths. Six species (Drepanidotaenia lanceolata, Hymenolepis apodemi, Hymenolepis diminuta, Ligula interrupta, Ligula intestinalis, Schistocephalus solidus) of cestodes parasitize both birds and mammals (D. lanceolata, H. diminuta in humans).


2021 ◽  
Author(s):  
Fuad Hüseynəli oğlu Rzayev ◽  
◽  
Eldar Köçəri oğlu Qasımov ◽  

The article presents the information about a systematic review of parasitic worms – acanthocephalans of the domestic waterfowl. Based on our own and literature data, 12 acanthocephala species belonging to the 1 order, 1 family and 5 genera were identified in domestic ducks (Anas platyrhynchos dom.) and geese (Anser anser dom.). Three species of worms are found in domestic waterfowl in Azerbaijan. The acanthocephala Polymorphus magnus have been reported for the first time in Azerbaijan – Khachmaz region in both birds. Six species of acanthocephals parasitize only in anseriformes, and the remaining six species parasitize including other orders of birds (Ciconiiformes, Gruiformes, Galliformes, Podicipediformes, Gaviiformes, Falconiformes, Charadriiformes et al.) and even mammals (Rodentia, Carnivora). Of the registered acanthocephals, 3 species have a small area of distribution, and the remaining 9 species have a wide area. Each species is provided with the following data: scientific name, authority and year, synonyms, final, intermediate and auxiliary hosts, habitat in the bird body, collecting localities and geographic distribution, prevalence (PI) and intensity (II) of infection, literature sources. Keywords: geese, duck, acanthocephala, systematic review, area, hosts



2021 ◽  
Vol 08 (03) ◽  
pp. 35-38
Author(s):  
Mina Faiq qızı Hüseynova ◽  

The rivers flowing from the north-eastern slope of the Greater Caucasus are among the rivers that flow directly into the Caspian Sea. Sludge, sand, various suspended solids, organic compounds, mineral salts, etc. in river water. both naturally and through irrigation. As a result of multi-year irrigation, agro-irrigation horizons of different thicknesses are formed by the accumulation in the soil of water-derived organic and mineral compounds. Significant changes in the mechanical composition of the soil occur due to the accumulation of materials here. First of all, the amount of small fractional physical activity increases, geophysical and geochemical processes change. The density of the soil increases, the reclamation condition deteriorates, the drainage capacity weakens, and the air and water regime are negatively affected. During the research, the hydrological features of the area rivers, feeding regime, areas irrigated by the rivers, ecological analysis of the river and canal waters and the complex of physical-geographical factors causing it were studied. Key words:water supply, water consumption, irrigated areas, canal water, ecological analysis of river water, physical-geographical factors



Zootaxa ◽  
2004 ◽  
Vol 684 (1) ◽  
pp. 1 ◽  
Author(s):  
RODNEY A. BRAY

Steringovermes notacanthi, a new genus and species of fellodistomine digenean, is described from the deep-sea spiny eel Notacanthus bonaparte from below 1,000m depth in the north eastern Atlantic. It differs from other related genera in the unique combination of a V-shaped excretory vesicle, multilobate, mainly post-testicular ovary and extensive vitelline fields extending into both the foreand hindbody. In addition, the fellodistomine Olssonium turneri Bray & Gibson, 1980 is reported for the first time from a fish not of the genus Alepocephalus, namely the alepocephalid Narcetes stomias.



Author(s):  
İbrahim Demirkale ◽  
Argun Akif Özak ◽  
Yetkin Sakarya

In this study, Bomolochus unicirrus Brian, 1902, a species of parasitic copepod belonging to the family Bomolochidae (Claus, 1875), was reported for the first time from the north-eastern Mediterranean waters off the Turkish coast. Parasites were collected from the gill filaments of the European barracuda, Sphyraena sphyraena(L.)captured by trawling in Iskenderun Bay, Turkey. The morphological features of B. unicirrus were Redescribed and illustrated based on the newly collected material. Key diagnostic characters and newly observed details in some structures are highlighted and supported by using scanning electron microscopy (SEM). Differences and simply overlooked details in previous descriptions of B. unicirrus, are discussed in detail. In addition, morphological comparisons between presently reported species and the other species of the genus Bomolochus Nordmann, 1832 were also presented.



Botanica ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 49-60
Author(s):  
Yuliia R. Khimich ◽  
Anton G. Shiryaev ◽  
Sergey V. Volobuev

AbstractTwenty-eight noteworthy species of aphyllophoroid fungi were recorded in the Murmansk Region (north-eastern Fennoscandia, Russia). Twenty-one species were reported for the first time in the region: Ceratellopsis corneri, Clavaria amoenoides, C. flavipes, Clavulinopsis umbrinella, Fibulomyces mutabilis, Hydnomerulius pinastri, Hyphoderma sibiricum, Hypochnicium albostramineum, Lentaria afflata, L. micheneri, Peniophorella pallida, Piloderma lanatum, Postia rennyi, Pseudotomentella umbrina, Ramariopsis crocea, R. tenuicula, Sarcodon scabrosus, Sistotrema diademiferum, Typhula curvispora, T. pachypus and T. struthiopteridis. Seven species are second and third records in the forest tundra and northern boreal zone: Ceratellopsis sagittiformis, Odontia fibrosa, Phaeoclavulina flaccida, Pterula sclerotiicola, Ramariopsis tenuiramosa, Tomentellopsis echinospora and Tulasnella allantospora.



2020 ◽  
pp. 16-70
Author(s):  
Marijn S. Visscher

The chapter considers the geographical literature of early Seleucid writers. It is argued that the first generation of Seleucid geographers appropriated the eastern regions of the Seleucid Empire with their works, often prioritizing useful political narratives over geographical accuracy. As literature, these works seem inexorably linked to the ambition of the early Seleucid court, especially its desire to assert its dominance over vast and previously unchartered territories. Patrocles, for instance, wrote a description of the coastal regions of the Caspian Sea and the Asian river system, parts of which appear to be pure invention. However, his puzzling claims evoked the image of a world empire stretching as far as the edge of the Ocean, bolstering the prestige of the Seleucids. Another work on the north-eastern regions of the empire, by Demodamas, establishes an image of transcendental rule, an image which he anchors in a specifically Hellenistic view of the succession of empires. Thirdly, Megasthenes used his Indica to convey the idea of imperial domination through knowledge, expressed in a colonial key and backed up by targeted cultural reimaginations and precise measurements. The chapter concludes with a discussion of the challenge to Seleucid geography from Alexandria in the form of Eratosthenes, who overturned the Seleucid knowledge of Asia and India while reflecting a distinctly Ptolemaic view of the world.



Author(s):  
Askarbay Kadralievich Kamelov

Semi-anadromous fish (roach, bream, pike-perch, asp) are the main objects of fishing in the coastal zone of the North-Eastern part of the Caspian Sea. The state of the populations of these fish changes significantly under the influence of natural and, especially, anthropogenic factors, which have increased in recent years. The aim of this work was to study the current state of populations of semi-anadromous fish in the NorthEastern Caspian Sea. Based on the materials of three years of research (2016, 2018, 2020), with the involvement of literary sources, long-term changes in the size-weight and, age indicators, nutritional status of fish and the sex ratio in populations are considered. It has been established that the state of the semi-anadromous fish populations in the North-Eastern Caspian remains tense at the present time. All populations are characterized by general negative patterns of state change. There are tendencies of decrease in size, weight and age indicators, the number of populations and fish catches are decreasing. These changes were least of all manifested in bream (whose state is relatively stable) and were most pronounced in pike perch. The depressive state of the populations is explained by a decrease in the scale of natural reproduction in recent years, due to a decrease in the water content of the Ural River and the number of spawners allowed to spawn on the river. Marine fisheries in the North-Eastern Caspian are concentrated in shallow waters, which increases the fishing load on semi-anadromous fish and prevents their passage to spawning. It is necessary to reduce the pressure of fishing by reducing the number of nets used in the shallow water area of the North-Eastern Caspian and strict observance of the rule of the forbidden pre-estuary space of the river Ural. English version of the article on pp. 87-94 is available at URL: https://panor.ru/articles/state-of-populations-and-fishing-of-semi-anadromous-fish-in-the-north-eastern-caspian-sea/64076.html



Phytotaxa ◽  
2015 ◽  
Vol 238 (1) ◽  
pp. 82
Author(s):  
Guilherme Medeiros Antar ◽  
BENOÎT LOEUILLE

Vernonia monocephala subsp. irwinii is a member of the genus Lessingianthus and is hereby transferred to that genus with a new status and a new name, L. semirii. It differs from L. monocephalus by its subsessile to petiolate (vs. sessile) leaves, largely attenuate (vs. rounded to attenuate) leaf bases, adaxial leaf surfaces drying black (vs. greenish), tomentose to velutinous (vs. villous) abaxial leaf surface and stem indument, and number of florets per head (up to 120 vs. up to 210). Both species are native to provinces of the Cerrado Domain, but they do not occur sympatrically: L. semirii is restricted to the North-eastern floristic province (Bahia, Maranhão, Tocantins and Pará states) and northern portion of the Central-western floristic province (Mato Grosso state), whereas L. monocephalus occurs in Distrito Federal and Goiás states in the Central-western, Central and South-eastern floristic provinces. Lessingianthus semirii is hereby described and illustrated for the first time; a distribution map is provided and affinities of this species are discussed.



2012 ◽  
Vol 46 (6) ◽  
pp. 1-8 ◽  
Author(s):  
V. Krasnovyd ◽  
Yu. Kvach ◽  
O. Drobiniak

Abstract The parasite fauna of gobiid fish of the Sukhyi Lyman, Black Sea, is described. Seventeen species of parasites are registered in the gobiids in the water body. The marine tubenose goby Proterorhinus marmoratus has the richest parasite fauna (12 species), the grass goby Zosterisessor ophiocephalus has the fewest number of parasite species (5 species). The microsporidian Loma sp. and ciliate Trichodina domerguei are recorded for the first time for gobiids in the north-western Black Sea. The core of the parasite fauna is formed by metacercariae Cryptocotyle spp. The core, secondary, satellite, and rare species in the parasite community of each host are described. Not only marine and brackish water parasites, but also limnetic species, namely metacercariae D. spathaceum, were registered in the Sukhyi Lyman that differentiates it from the many of localities in the north-western Black Sea.



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