Hydroptila eramosa a new caddis fly from Southern Ontario (Trichoptera, Hydroptilidae)

1973 ◽  
Vol 51 (3) ◽  
pp. 393-394
Author(s):  
P. P. Harper
Keyword(s):  
Adult Male ◽  
Similar Species ◽  
Southern Ontario ◽  
Caddis Fly

The adult male of Hydroptila eramosa n. sp. is described from Southern Ontario and is briefly compared with other similar species of the "waubesiana group."

A new species of the genus Odonteus (Coleoptera: Geotrupidae) from northern Pakistan

Zootaxa ◽  
2005 ◽  
Vol 968 (1) ◽  
pp. 1
Author(s):  
GIUSEPPE M. CARPANETO ◽  
ROBERTO MIGNANI
Keyword(s):  
New Species ◽  
North America ◽  
Adult Female ◽  
Adult Male ◽  
Similar Species ◽  
Northern Pakistan ◽  
Relict Species ◽  
Old World ◽  
Definition Of ◽  
A New Species

A remarkable new species, Odonteus gandhara Carpaneto & Mignani, n. sp., is described from northern Pakistan. The holotype (adult male) and the paratype (adult female) are illustrated and compared with O. armiger (Scopoli, 1772) and O. orientalis Mittal, 1998, the only two species of this genus recognized in the Old World. Both O. armiger and O. orientalis have the eye not completely divided by the canthus and have a sensory area on the external side of the last antennomere (this character has never been discussed in the literature until now). These two character states in O. armiger and O. orientalis compel emendations to the definition of the genus. The new species has a great zoogeographical relevance because similar species occur in North America (O. obesus LeConte, 1859 and O. falli Wallis, 1928), and probably represents a relict species endemic to the Himalayan range.

On remarkable Pachylaelaps species with unusual sperm induction system in females (Acari, Mesostigmata, Pachylaelapidae)

2018 ◽  
Vol 23 (9) ◽  
pp. 1726 ◽  
Author(s):  
Peter Masan ◽  
Samaneh Mojahed ◽  
Jalil Hajizadeh ◽  
Reza Hosseini ◽  
Ali Ahadiyat
Keyword(s):  
New Species ◽  
Adult Male ◽  
Deciduous Forest ◽  
Species Group ◽  
Similar Species ◽  
Tubular Structures ◽  
Induction System ◽  
First Time ◽  
A New Species ◽  
Forest Habitats

In our study of the pachylaelapid mites from Iran, a new remarkable species, Pachylaelaps (Pachylaelaps) prodigiosus sp. nov., is described and illustrated based on adult stages found in soil detritus of broadleaved deciduous forest habitats. The sperm induction system detected in females of the new species is unusual in having its tubular structures exclusively associated with coxae III instead of coxae IV, as found in all other members of the genus. An adult male of P. (P.) grandis Koroleva, 1977, a similar species with analogous sperm induction system in female, is described for the first time. A new species group in the subgenus Pachylaelaps, represented by P. (P.) grandis, P. (P.) kirghizorum Koroleva, 1977 and P. (P.) prodigiosus sp. nov., is newly constituted, and its specific characters of insemination apparatus discussed. 

Phenacoccus solenopsis Tinsley (Sternorrhyncha: Coccoidea: Pseudococcidae), an invasive mealybug damaging cotton in Pakistan and India, with a discussion on seasonal morphological variation

Zootaxa ◽  
2008 ◽  
Vol 1913 (1) ◽  
pp. 1-35 ◽  
Author(s):  
CHRIS HODGSON ◽  
GHULAM ABBAS ◽  
MUHAMMAD JALAL ARIF ◽  
SHAFQAT SAEED ◽  
HAIDER KARAR
Keyword(s):  
Adult Female ◽  
Adult Male ◽  
Morphological Variation ◽  
Indian Subcontinent ◽  
Single Species ◽  
Western India ◽  
Similar Species ◽  
Type Specimens ◽  
Phenacoccus Solenopsis ◽  
Morphological Differences

Since at least 2005, a possibly introduced mealybug of the genus Phenacoccus has been causing serious damage to cotton (Gossypium hirsutum) over much of the Sindh and Punjab districts of Pakistan and in north-western India. Some short papers have been published locally giving details on the structure and biology of this species and suggesting the name Phenacoccus gossypiphilous Abbas, Arif & Saeed (2005) but without designating type specimens or depositories. This name is here considered a nomen nudum. A detailed morphological study has been unable to separate this species from many specimens of Phenacoccus from the Neotropics that are believed to be Phenacoccus solenopsis Tinsley. The material from the Indian subcontinent shows considerable morphological variation in the frequency of multilocular disc pores and oral collar tubular ducts on the ventral submargin of the abdomen; this appeared to be related to conditions under which this species was reared, with those cultured in a screen-house during the non-cotton-growing season being indistinguishable from P. solenopsis from the Neotropics . This paper re-describes the adult female of P. solenopsis Tinsley based on the type specimens from New Mexico, and designates a lectotype. The type material was compared with specimens considered to be P. solenopsis from elsewhere in the New World, and from West Africa and several areas in Asia, particularly Pakistan and India. Based of our present understanding of the morphology of adult female P. solenopsis, it is concluded that the species is rather variable, that this variability may be environmentally induced, and that the species currently causing widespread damage to cotton on the Indian subcontinent is referable to P. solenopsis. Adult male P. solenopsis from North America, Pakistan and India were also studied and again no significant differences were found. Descriptions are provided of the adult male and all the immature stages of P. solenopsis, based on material from India and Pakistan. Keys are provided to (a) separate P. solenopsis from similar species of Phenacoccus currently known from Asia and (b) to identify all instars. The morphological differences between P. solenopsis, P. solani Ferris and P. defectus Ferris are reviewed and, based on the morphological variation found in the Asian material, it is considered that there is some support for the suggestion that these three species might be environmentally induced variants of a single species. A few details are given of the biology of P. solenopsis on cotton in Pakistan.

The effect of winter drainage on reservoir benthic fauna

1969 ◽  
Vol 47 (4) ◽  
pp. 589-595 ◽  
Author(s):  
C. G. Paterson ◽  
C. H. Fernando
Keyword(s):  
Indirect Evidence ◽  
Benthic Fauna ◽  
Atmospheric Conditions ◽  
Southern Ontario ◽  
Probability Of Survival ◽  
Short Period ◽  
Benthic Environment ◽  
Laurel Creek ◽  
Caddis Fly ◽  
Chironomid Fauna

Winter drainage of Laurel Creek Reservoir in southern Ontario exposed the benthic environment to atmospheric conditions for between 168 and 176 days. During the first 50 days, which had above-freezing temperatures, much of the fauna was destroyed. In the next 100 days the substrate became frozen to depths greater than 20 cm. Freezing of the substrate resulted in the loss of the oligochaetes, nematodes, and oribatoid mites as well as a large percentage of the chironomid fauna. Small numbers of the caddis fly, Agraylea multipunctata; the chironomid Cricotopus trifasciatus; and the molluscs Planorbula jenksii and Lymnaea palustris were found to survive the period of freezing and the subsequent short period of thawing before the refilling of the reservoir. Indirect evidence suggests the survival of small numbers of certain species of chironomids not found in the samples. Glyplotendipes barbipes showed the highest survival under the conditions of exposure, as the population immediately after refilling was between 12.5 and 46.4% of that found before drainage of the reservoir. The fauna did not actively move deeper into the substrate as freezing progressed although the probability of survival was greater at the deeper levels. A. multipunctata, C. trifasciatus, and G. barbipes have been found able to pupate and emerge after survival in the exposed substrate.

Alteration of Mitochondria in Oxythiamine-Induced, Acute Thiamine Deficiency in the Mouse

1976 ◽  
Vol 34 ◽  
pp. 284-285
Author(s):  
Itaru Watanabe ◽  
Dante G. Scarpelli
Keyword(s):  
Electron Microscopy ◽  
Adult Male ◽  
Thiamine Deficiency ◽  
Light And Electron Microscopy ◽  
Fatty Change ◽  
Deficient Diet ◽  
Subcutaneous Injections ◽  
Swiss Mice ◽  
Time Period ◽  
Ad Libitum

Acute thiamine deficiency was produced in mice by the administration of oxythiamine, a thiamine analogue, superimposed upon a thiamine deficient diet. Adult male Swiss mice (30 gm. B.W.) were fed with a thiamine deficient diet ad libitumand were injected with oxythiamine (170 mg/Kg B.W.) subcutaneously on days 4 and 10. On day 11, severe lassitude and anorexia developed, followed by death within 48 hours. The animals treated daily with subcutaneous injections of thiamine (300 μg/Kg B.W.) from day 11 through 15 were kept alive. Similarly, feeding with a diet containing thiamine (600 μg/Kg B.W./day) from day 9 through 17 reversed the condition. During this time period, no fatal illness occurred in the controls which were pair-fed with a thiamine deficient diet.The oxythiamine-treated mice showed a significant enlargement of the liver, which weighed approximately 1.5 times as much as that of the pair-fed controls. By light and electron microscopy, the hepatocytes were markedly swollen due to severe fatty change and swelling of the mitochondria.

Scanning electron microscopy of the integument of schistosoma rodhaini

1986 ◽  
Vol 44 ◽  
pp. 132-133
Author(s):  
P. Evers ◽  
C. Schutte ◽  
C. D. Dettman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Oral Sucker ◽  
Adult Male ◽  
Dorsal Surface ◽  
Ventral Surface ◽  
Sensory Receptors ◽  
East African ◽  
Dorsal Midline ◽  
Scanning Electron

S.rodhaini (Brumpt 1931) is a parasite of East African rodents which may possibly hybridize with the human schistosome S. mansoni. The adult male at maturity measures approximately 3mm long and possesses both oral and ventral suckers and a marked gynaecophoric canal. The oral sucker is surrounded by a ring of sensory receptors with a large number of inwardly-pointing spines set into deep sockets occupying the bulk of the ventral surface of the sucker. Numbers of scattered sensory receptors are found on both dorsal and ventral surfaces of the head (Fig. 1) together with two conspicuous rows of receptors situated symmetrically on each side of the midline. One row extends along the dorsal surface of the head midway between the dorsal midline and the lateral margin.

An Ultrastructural Comparison of Hepatocytes from ADH+ and ADH−Peromyscus Maniculatus

1996 ◽  
Vol 54 ◽  
pp. 30-31
Author(s):  
J. T. Ellzey ◽  
D. Borunda ◽  
B. P. Stewart
Keyword(s):  
South Carolina ◽  
Adult Male ◽  
Uranyl Acetate ◽  
Model System ◽  
Deer Mice ◽  
En Bloc ◽  
Genetic Stock ◽  
Hepes Buffer ◽  
Transmission Electron ◽  
Color Scanner

Genetically alcohol deficient deer mice (ADHN/ADHN) (obtained from the Peromyscus Genetic Stock Center, Univ. of South Carolina) lack hepatic cytosolic alcohol dehydrogenase. In order to determine if these deer mice would provide a model system for an ultrastructural study of the effects of ethanol on hepatocyte organelles, 75 micrographs of ADH+ adult male deer mice (n=5) were compared with 75 micrographs of ADH− adult male deer mice (n=5). A morphometric analysis of mitochondrial and peroxisomal parameters was undertaken.The livers were perfused with 0.1M HEPES buffer followed by 0.25% glutaraldehyde and 2% sucrose in 0.1M HEPES buffer (4C), removed, weighed and fixed by immersion in 2.5% glutaraldehyde in 0.1M HEPES buffer, pH 7.4, followed by a 3,3’ diaminobenzidine (DAB) incubation, postfixation with 2% OsO4, en bloc staining with 1% uranyl acetate in 0.025M maleate-NaOH buffer, dehydrated, embedded in Poly/Bed 812-BDMA epon resin, sectioned and poststained with uranyl acetate and lead citrate. Photographs were taken on a Zeiss EM-10 transmission electron microscope, scanned with a Howtek personal color scanner, analyzed with OPTIMAS 4.02 software on a Gateway2000 4DX2-66V personal computer and stored in Excel 4.0.

Preliminary research of the aldosterone synthesized by bone morrow stem cells of adult male ratsin vitro

2010 ◽  
Vol 34 (8) ◽  
pp. S43-S43
Author(s):  
Wei‑ying Zou ◽  
Bei Yang ◽  
Xiuli Ni ◽  
Da‑lei Zhang ◽  
Lei Wu ◽  
...  
Keyword(s):  
Stem Cells ◽  
Adult Male ◽  
Preliminary Research ◽  
Bone Morrow
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