Sensory and glandular equipment of the trunk limbs of the Chydoridae and Macrothricidae (Crustacea: Anomopoda)

Author(s):  
Henri J. Dumont ◽  
Marcelo Silva-Briano
Keyword(s):  
Author(s):  
И.А. Куклин ◽  
Н.П. Малишевская ◽  
М.М. Кохан ◽  
Г.Д. Сафонова ◽  
О.Г. Римар ◽  
...  

В статье представлен краткий обзор литературы о клинических проявлениях, современных методах диагностики и лечения чрезвычайно редкого заболевания – множественной эруптивной кератоакантомы типа Гржебовски. Заболевание характеризуется возникновением сотен или тысяч генерализованных зудящих узелков на коже лица, туловища, конечностей, половых органов, слизистой полости рта и гортани в течение короткого времени. Заболевание развивается в возрасте старше 40 лет, имеет рецидивирующее течение, возможна спонтанная инволюция отдельных элементов с формированием участков депигментации или атрофических рубцов. Авторы приводят случай собственного клинического наблюдения множественной эруптивной кератоакантомы типа Гржебовски у пациента 50 лет, который обратился на консультацию к дерматовенерологу в клинику Уральского НИИ дерматовенерологии и иммунопатологии. Длительность болезни на момент обращения составляла 2,5 года, ее возникновению предшествовало неоднократное посещение больным стран с избыточной инсоляцией, что может рассматриваться в качестве этиологического фактора развития заболевания. Диагноз впервые был заподозрен на консилиуме дерматовенерологов на основании клинической картины заболевания и в дальнейшем верифицирован данными патоморфологического исследования биоптата пораженной кожи. Показана эффективность применения ароматических ретиноидов в лечении множественной эруптивной кератоакантомы типа Гржебовски и приведены побочные эффекты, которые развились у больного при самостоятельном увеличении дозы ацитретина до 70 мг/сутки. В статье констатируется чрезвычайно редкая встречаемость данного заболевания, о чем свидетельствует приведенный клинический случай, диагностируемый впервые более чем за 90-летнюю историю существования института. Подчеркивается важность консолидации клинического опыта нескольких ведущих дерматовенерологов для диагностики множественной эруптивной кератоакантомы типа Гржебовски. The article presents a brief review of the literature about clinical manifestations, modern methods of diagnosticsand treatment of an extremely rare disease – generalized eruptive keratoacanthomas of Grzybowski. The disease is characterized by the appearance of hundreds or thousands of generalized itchy nodules on the skin of the face, trunk, limbs, genitals, oral mucosa and larynx within a short time. The disease develops at the age of over 40, has a recurrent course, spontaneous involution of individual elements with the formation of areas of depigmentation or atrophic scars is possible. The authors describe a case of their own clinical care of generalized eruptive keratoacanthomas of Grzybowski in a 50-year-old patient who consulted a dermatovenerologist at the clinic of the Ural Research Institute of Dermatovenerology and Immunopathology.The duration of the disease at the time of visit to a doctor was 2,5 years, its occurrence was preceded by repeated visits to countries with excessive insolation, which can be considered as an etiological factor in the development of the disease. The diagnosis was first suspected at a boarddermatovenerologists based on the clinical picture of the disease and subsequently verified by the data of a pathomorphological examination of the biopsy of the affected skin.The effectiveness of the use of aromatic retinoids in the treatment of generalized eruptive keratoacanthomas of Grzybowski is shown and the side effects that developed in the patient with an independent increase in the dose of acitretin to 70 mg/day are given. The article states the extremely rare occurrence of this disease, as evidenced by the above clinical case, diagnosed for the first time in more than 90 years of the institute's existence. The importance of consolidating the clinical experience of several leading dermatovenerologists for the diagnostics of generalized eruptive keratoacanthomas of Grzybowski is emphasized.


Zootaxa ◽  
2004 ◽  
Vol 760 (1) ◽  
pp. 1 ◽  
Author(s):  
LOURDES M.A. ELMOOR-LOUREIRO

The phylogenetic relationships among families of the Order Anomopoda (Crustacea, Branchiopoda, Cladocera) were investigated through a cladistic analysis including 93 characters and 37 terminal taxa (2 as outgroups). The strict consensus tree supported the monophyly of the Anomopoda and its families, and indicated the existence of two main clades: (Moinidae+Daphniidae) and (Dumontidae (Ilyocryptidae+Bosminidae+Radopoda)). The later clade was supported by trunk limb characters, probably related to life associated with the bottom or with macrophytes (lifestyle lost in Bosminidae, but still visible in some of its trunk limbs). Within the Radopoda, the Eurycercoidea was monophyletic, but the monophyly of the Macrothricoidea was not supported.


Zootaxa ◽  
2004 ◽  
Vol 618 (1) ◽  
pp. 1 ◽  
Author(s):  
STEFAN KOENEMANN ◽  
THOMAS M. ILIFFE ◽  
JILL YAGER

We describe a new genus and species of remipede crustacean from an anchialine cave on the Turks and Caicos Islands in the Caribbean region. Kaloketos pilosus is a medium-sized species of robust build that occurs in sympatry with other remipedes, and is recognized as a new genus of the family Speleonectidae. Kaloketos is distinguished from other genera of Remipedia by several unique characters that include dense fields of short, feathered setae on most maxillary and maxillipedal segments, and distinctly expanded rami of the larger trunk limbs.


Plant Disease ◽  
2017 ◽  
Vol 101 (8) ◽  
pp. 1354-1361 ◽  
Author(s):  
David Ezra ◽  
Michal Hershcovich ◽  
Dani Shtienberg

Fungal gummosis syndrome of deciduous fruit trees was reported from several countries, including Israel. Symptomatic 5–7 to 10–14-year-old trees exude large amounts of gum on the trunk, limbs, branches, and twigs, accompanied by sunken lesions on the bark. The necrotic area extends to the xylem to form black to brown staining of the tissue. The general conception is that “this is a nuisance that can be pruned out of trees during the dormant season with no economic significance.” In this study we attempted to: (i) identify the fungi associated in the gummosis syndrome of deciduous trees in Israel and (ii) quantify the significance of gummosis syndrome on tree and fruit development and on crop value. Branches from symptomatic and asymptomatic deciduous trees were collected during 2012 to 2015 from 29 orchards including peach (14 orchards), nectarine (six orchards), apricot (six orchards), plum, cherry, and almond (one orchard each). In all cases, fungi associated with the Botryosphaeriaceae family were isolated from tissues exhibiting the typical gummosis symptoms. The decay fungus Phellinus sp. was isolated from 53.3% of the samples. The dynamics of fruit growth in symptomatic and asymptomatic trees was recorded in 2014 and 2015 in an 11-year-old peach orchard. In trees exhibiting the gummosis syndrome, yield was lower by 11.5 to 22.5% and its value was reduced by 14.7 to 19.4%, compared with those of asymptomatic trees in 2014 and 2015, respectively. Although these are substantial losses, the grower of the orchard was not aware of the losses occurring in his orchard. The reason for this situation is explained and discussed. The outcome conclusion of the current study is that the gummosis syndrome of deciduous trees imposes significant, hence undistinguishable, losses in mature deciduous fruit trees.


Zootaxa ◽  
2009 ◽  
Vol 1988 (1) ◽  
pp. 61-68 ◽  
Author(s):  
XIANG JI ◽  
YUE-ZHAO WANG ◽  
ZHENG WANG

A new viviparous species of Phrynocephalus from Guinan, Qinghai, China, is described. Phrynocephalus guinanensis sp. nov., differs from all congeners in the following combination of characters: body large and relatively robust; dorsal ground color of head, neck, trunk, limbs and tail brown with weak light brown mottling; lateral ground color of head, neck, trunk and tail light black with weak white-gray mottling in adult males, and green with weak white-gray mottling in adult females; ventral ground color of tail white-gray to black in the distal part of the tail in adult males, and totally white-gray in adult females; ventral surfaces of hind-limbs white-gray; ventral surfaces of fore-limbs brick-red in adult males, and white-gray in adult females; ventral ground color of trunk and head black in the center but, in the periphery, brick-red in adult males and white-gray in adult females. Phrynocephalus guinanensis sp. nov. typically uses desert habitats, whereas P. vlangalii, a species closely related to the new form, uses a variety of arid and semi-arid habitats. It is the nineteenth species of Phrynocephalus recorded from China.


2012 ◽  
Vol 279 (1748) ◽  
pp. 4699-4704 ◽  
Author(s):  
David A. Legg ◽  
Mark D. Sutton ◽  
Gregory D. Edgecombe ◽  
Jean-Bernard Caron

Extant arthropods are diverse and ubiquitous, forming a major constituent of most modern ecosystems. Evidence from early Palaeozoic Konservat Lagerstätten indicates that this has been the case since the Cambrian. Despite this, the details of arthropod origins remain obscure, although most hypotheses regard the first arthropods as benthic predators or scavengers such as the fuxianhuiids or megacheirans (‘great-appendage’ arthropods). Here, we describe a new arthropod from the Tulip Beds locality of the Burgess Shale Formation (Cambrian, series 3, stage 5) that possesses a weakly sclerotized thorax with filamentous appendages, encased in a bivalved carapace, and a strongly sclerotized, elongate abdomen and telson. A cladistic analysis resolved this taxon as the basal-most member of a paraphyletic grade of nekto-benthic forms with bivalved carapaces. This grade occurs at the base of Arthropoda (panarthropods with arthropodized trunk limbs) and suggests that arthrodization (sclerotization and jointing of the exoskeleton) evolved to facilitate swimming . Predatory and fully benthic habits evolved later in the euarthropod stem-lineage and are plesiomorphically retained in pycnogonids (sea spiders) and euchelicerates (horseshoe crabs and arachnids).


1927 ◽  
Vol 55 (2) ◽  
pp. 355-369 ◽  
Author(s):  
H. Graham Cannon

The object of this research was to compare the feeding mechanism of Nebalia with that of Hemimysis described by Miss Manton and myself (1927). The observations of the living animals were made partly at Naples while I was occupying the Cambridge University table, and partly at Plymouth where I had the use of the London University table.The methods used in determining the feeding currents were the same as those used for Hemimysis (Cannon and Manton, 1927). To obtain a ventral view of the trunk limbs, I simply held the living animal upside down, gripping the abdomen with a pair of forceps, and in this position it would feed for a long time. I found it possible even to remove the entire carapace without killing the animal or upsetting the normal movements of the limbs.


Author(s):  
Artem Y. Sinev ◽  
Henri J. Dumont

By taking Flavalona gen. nov. out of Alona s.l. (Cladocera: Anomopoda: Chydoridae), the last major clade has now been removed from this polyphyletic assemblage. Flavalona gen. nov. is a monophylum defined by having three, rarely two connected head pores and slit-shaped, rarely rounded lateral head pores. Postabdomen rather long, distally narrowed, with robust marginal denticles and weakly developed lateral fascicles of setules. End-claw weakly curved and with short basal spine. Male postabdomen with gonopores opening at the end of a penis-like outgrowth. Trunk limbs: exopodite of P2 with seta; inner portion of P4 with flaming-torch shaped setae; P5 with filter plate of three setae; P6 a large simple lobe. The relationship of the new genus with other Aloninae remains to be determined. A key to the 11 species of the genus is provided and a discussion of their geographic distribution and habitat type is given.


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