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2. A redescription of the adult male of Caecognathia cryptopais (Barnard, 1925) (Crustacea: Isopoda: Gnathiidae) from southern Africa

Creator:
Smit, Nico J., Basson, Linda, and Van As, Jo G.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Caecognathia cryptopais, redescription, taxonomy, and morphology
Language:
English
Description:
A redescription of the adult male of Caecognathia cryptopais (Barnard, 1925) is provided from syntypes and other material deposited in the South African Museum. The generic status of Caecognathia cryptopais is also revised. This redescriplion is based on light and scanning electron microscopy.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. First record of the genus Syncuaria (Nematoda: Acuariidae) in Argentina, with description of a new species

Creator:
Digiaiii, Maria Celina
Format:
print
Type:
model:internalpart and TEXT
Subject:
Syncuariaplegadisi, Syncuaria diacantha, Nematoda, Acuariidae, Threskiomithidae, Argentina, and host specificity
Language:
English
Description:
The nematode genus Syncuaria Gilbert, 1927 (Acuariidae) is reported for the first time from Argentina with two species parasitic in Threskiomithidae. Syncuaria plegadisi sp. n. from the white-faced ibis, Ptegadis chihi (Vieillot), is described and figured. The new species differs from known species of Syncuaria by the following characters: absence of lateral alae; cephalic cordons narrow, consisting of cuticular plates dorsally and ventrally invaginated forming a groove; presence of cephalic spines; spicules with simple, rounded distal ends; left spicule two to three times longer than right one; female tail dorsally bent and distance between vulva and anus comparable to tail length. Syncuaria diacantha Petter, 1961, a common parasite of the roseate spoonbill, Plalalea ajaja L., is reported for the first time from Argentina and briefly described. SEM micrographs for both species are provided. Both S. plegadisi sp. n. and S. diacantha were found to co-oeeur in the same locality, but not on the same host, suggesting a high degree of host specificity.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. New mathematical model of certain class of continuum mechanics problems

Creator:
Pochylý, František, Fialová, Simona, and Krutil, Jaroslav
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
fluid structure interaction, momentum equation, continuous mechanics, and Maxwell equations
Language:
English
Description:
This paper presents a variant of a mathematical model of continuum mechanics. Adaption of the model is focused on the unsteady term. The solution is based on the assumption of the zero value of the divergence vector, which can have a different physical meaning. and Obsahuje seznam literatury a názvosloví
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Steinernema kraussei (Steiner, 1923) (Nematoda: Rhabditida: Steinernematidae): redescription of its topotype from Westphalia

Creator:
Mráček, L.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Steinernema kraussei, redescription, insect, and parasite
Language:
English
Description:
The nematode Steinernema kraussei (Steiner) was rediscovered in the type locality near Neuenherrsee in Westphalia, Germany. This isolate is morphologically identical with that described in 1923 by Steiner. Steiner's original description is completed by these main characters: the head with two circles of papillae, the labial bearing six and the cephalic four papillae; the excretory pore opening of adults is situated far in front of a nerve ring; the male tail has a fine mucron, spicules are on average 49 pm long in first generation, their manubrium having the ratio length to width 1:1 ; spicule retinaculum is usually well developed, gubcmaculum varies in its shape, but mostly is boat-shaped with hooked proximal part. Infective juveniles are 797 to 1102 pm long and their lateral fields have 8 ridges, but the central pair is less distinct and sometimes tends to merge into one unpaired ridge. Since S. kraussei is the oldest, and now the most completely described nematode species in the genus Steinernema, it has to be considered as the type species of this genus. The living culture is presently maintained in several laboratories and all formerly and future described similar species should be compared with this nematode.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6. The role of mite pocket-like structures on Agama caudospinosa (Agamidae) infested by Pterygosoma livingstonei sp. n. (Acari: Prostigmata: Pterygosomatidae)

Creator:
Bertrand, Michel and Modrý, David
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Pterygosomatidae, Agamidae, mite pockets, ectoparasites, and host-paraite srelationships
Language:
English
Description:
Pterygosoma livingstonei sp. n. collected from the Kenyan lizard Agama caudospinosa Meek shows morphological affinities with other South African congener species parasitizing lizards of the genus Agama, especially with P. triangulare Lawrence, 1936, but it differs in having glabrous genua II and III. P. livingstonei shows affinities with the Lawrence's hispida species group in the characters of genital and peripheral setae. This new species was found concentrated in a nuchal ''mite pocket-like structure'', a behaviour previously unreported among species belonging to the genus Pterygosoma. Mite pockets (or acarodomatia, acarinaria) of lizards typically house damaging chigger mites, and are usually interpreted as the evolutionary host's response to limit damage caused by parasites. Because scale mites are permanent ectoparasites and less damaging than seasonally occurring larval trombiculids, the heavy infestation by P. livingstonei in the nuchal skin folds of its host is interpreted as a consequence of the best utilisation of an available protected site by these mites that spend their entire life cycle on their host and whose primitive body shape prevents them from seeking shelter beneath the scales of their lizard host.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public