scholarly journals BIOECOLOGY AND DEVELOPMENT OF THE CALIFORNIA SHIELD SHIELD (QUADRASPIDIOTUS PERNICIOSUS COMST.) IN UZBEKISTAN

2020 ◽  
Vol 10 (5(74)) ◽  
pp. 39-40
Author(s):  
B.E. Murodov ◽  
Zh.N. Yahyoev ◽  
U.D. Ortikov
Keyword(s):  
Adult Female ◽  
Next Generation ◽  
Quarantine Pest ◽  
Adult Females ◽  
Quadraspidiotus Perniciosus

Dangerous coccids are widespread in Uzbekistan. Of these, the californian shield insect is a quarantine pest. It damages many plants. It damages apple, pear, plum, quince, peach, almonds, hawthorn, elm, poplar and others. Diapausing larvae of the first age overwinter, covered with a dark gray or black shield. In spring, it feeds intensely, molts and forms a shield similar to that of an adult female. After the second molt, adult females are formed. After mating, the female spawns larvae of strollers, which spreads along branches and leaves, and can also settle on fruits. It gives rise to the next generation

scholarly journals Bioecology And Species Of Diaspididae In Fruit Gardens

2020 ◽  
Vol 02 (11) ◽  
pp. 104-112
Author(s):  
Jurabek Nodirjonovich Yakhyoyev ◽  
◽  
Khojimurod Khamrokulovich Kimsanbayev ◽  
Keyword(s):  
Adult Female ◽  
Apple Tree ◽  
Next Generation ◽  
Adult Females

A dangerous pest is widespread in Uzbekistan. Of these is a dangerous coccid. They damage many plants. It damages the apple tree, pear, plum, quince, peach, almonds, hawthorn, elm, poplar and others. Winter diapausing larvae of the first age, covered with a dark gray or black shield. In the spring they are intensively fed, molt and form a shield similar to that of an adult female. After the second moult, adult females are formed. After mating, females spawn larvae-tramps, which creep along branches and leaves, and can also settle on fruits. They give rise to the next generation

scholarly journals Culturable bacteria associated with Anopheles darlingi and their paratransgenesis potential

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Elerson Matos Rocha ◽  
Osvaldo Marinotti ◽  
Deidre Machado Serrão ◽  
Laura Viana Correa ◽  
Ricardo de Melo Katak ◽  
...  
Keyword(s):  
Public Health Problem ◽  
Major Public Health Problem ◽  
Culturable Bacteria ◽  
Anopheles Darlingi ◽  
Next Generation ◽  
Bacterial Strains ◽  
Promising Alternative ◽  
Breeding Sites ◽  
Adult Females ◽  
Microbiological Techniques

Abstract Background Malaria remains a major public health problem in South America, mostly in the Amazon region. Among newly proposed ways of controlling malaria transmission to humans, paratransgenesis is a promising alternative. Paratransgenesis aims to inhibit the development of parasites within the vector through the action of genetically modified bacteria. The first step towards successful paratransgenesis in the Amazon is the identification of Anopheles darlingi symbiotic bacteria, which are transmitted vertically among mosquitoes, and are not pathogenic to humans. Methods Culturable bacteria associated with An. darlingi and their breeding sites were isolated by conventional microbiological techniques. Isolated strains were transformed with a GFP expressing plasmid, pSPT-1-GFP, and reintroduced in mosquitoes by feeding. Their survival and persistence in the next generation was assessed by the isolation of fluorescent bacteria from eggs, larvae, pupae and adult homogenates. Results A total of 179 bacterial strains were isolated from samples from two locations, Coari and Manaus. The predominant genera identified in this study were Acinetobacter, Enterobacter, Klebsiella, Serratia, Bacillus, Elizabethkingia, Stenotrophomonas and Pantoea. Two isolated strains, Serratia-Adu40 and Pantoea-Ovo3, were successfully transformed with the pSPT-1-GFP plasmid and expressed GFP. The fluorescent bacteria fed to adult females were transferred to their eggs, which persisted in larvae and throughout metamorphosis, and were detected in adult mosquitoes of the next generation. Conclusion Serratia-Adu40 and Pantoea-Ovo3 are promising candidates for paratransgenesis in An. darlingi. Further research is needed to determine if these bacteria are vertically transferred in nature.

scholarly journals Chronic fetal hypoxia disrupts the peri‐conceptual environment in next‐generation adult female rats

2019 ◽  
Vol 597 (9) ◽  
pp. 2391-2401 ◽  
Author(s):  
Catherine E. Aiken ◽  
Jane L. Tarry‐Adkins ◽  
Ana‐Mishel Spiroski ◽  
Anna M. Nuzzo ◽  
Thomas J. Ashmore ◽  
...  
Keyword(s):  
Adult Female ◽  
Female Rats ◽  
Next Generation ◽  
Fetal Hypoxia ◽  
Generation Adult

Spatial variability in the social organisation of the yellow-bellied glider (Petaurus australis) near Ravenshoe, north Queensland

2001 ◽  
Vol 49 (4) ◽  
pp. 397 ◽  
Author(s):  
Ross L. Goldingay ◽  
Darren G. Quin ◽  
Sue Churchill
Keyword(s):  
Adult Female ◽  
Social System ◽  
Dominant Male ◽  
Female Group ◽  
Sexually Dimorphic ◽  
Adult Males ◽  
Adult Females ◽  
The Social ◽  
Natal Home ◽  
Petaurus Australis

A detailed study was conducted over a 12-month period of 10 yellow-bellied glider groups at Nitchaga Creek in north Queensland. Adult gliders were sexually dimorphic in body size and were characterised by yellow ventral fur, which is consistent with southern populations. Gliders lived in groups of 3–6 individuals that occupied exclusive areas of about 50 ha. The structure of glider groups varied enormously: five contained one adult pair, three contained one adult male and 2–3 adult females, and two initially contained 2–3 adult males and one adult female but then persisted as bachelor groups after the death or disappearance of the adult female. Group size changed during the year as offspring matured and as individuals died. One male glider dispersed about 1 km from its natal home-range and became the dominant male in a nearby group. Young were born throughout the year, with a peak in the number of pouch-young in June. This study has confirmed the highly variable social system of the yellow-bellied glider, which appears to be mediated by local resource abundance.

New Margarodid species (Homoptera: Coccoidea : Margarodidae : Monophlebinae) from New Guinea

1989 ◽  
Vol 3 (7) ◽  
pp. 877 ◽  
Author(s):  
S Bhatti ◽  
PJ Gullan
Keyword(s):  
New Species ◽  
Adult Female ◽  
New Guinea ◽  
New Genera ◽  
Genital Opening ◽  
Adult Females ◽  
First Instar ◽  
Two New Species ◽  
First Time ◽  
One New Species

Three new genera and 11 new species from New Guinea are described in the tribe Monophlebulini. Erropera, gen, nov., contains four new species: E. ablusa, E. papuensis, E, pilosa and E. sedlaceki; Modicicoccus, gen. nov., contains four new species: M. gagnei, M. kaindiensis, M. monticolus and M. rtewsteadi; and Peengea, gen. nov., contains one new species: P. affinis. Two new species of Mottophlehirlus Cockerell, M. enarotalicus and M. gressitti, are described. The adult females of all 11 new species and the first instar nymphs of E. sedlaceki and P. affinis are described. A marsupium associated with the genital opening of the adult female is reported for the first time in the tribe Monophlebulini.

Growth of the Eastern Quoll, Dasyurus viverrinus (Shaw), (Marsupialia) in Captivity

1984 ◽  
Vol 11 (1) ◽  
pp. 21 ◽  
Author(s):  
JC Merchant ◽  
K Newgrain ◽  
B Green
Keyword(s):  
Litter Size ◽  
Adult Female ◽  
Growth And Development ◽  
Mammary Glands ◽  
Adult Females ◽  
In Captivity ◽  
Molar Teeth ◽  
Males And Females ◽  
At Will

The growth and development, from 10 to 270 days old, of eastern quolls in a captive colony was recorded. Young were able to detach from the teat by 65 days of age and their eyes were open by 80 days. Statistically significant differences in some measurements from males and females were found as early as 85 days of age. The weaning period commenced at 102 days ofage, and coincided with eruption ofthe first molar teeth. Total independence, determined by the cessation of lactation in the mother, was as early as 142 days in litters of one or as late as 200 days in larger litters. There was a high correlation between litter size and age at independence. Lactation was maintained in all previously suckled mammary glands of adult females after the death of young aged 65 days or over if some siblings remained. This was due to the ability of young of this age to detach and reattach to the teats at will. The implication of this observation is that the commonly held view that the numbers of surviving young in marsupial litters corresponds to the number of lactating teats in the adult female may not always be correct.

Parasitism of the commercial sand crab Portunus pelagicus (L.) by the rhizocephalan Sacculina granifera Boschma, 1973 in Moreton Bay, Queensland, Australia

1994 ◽  
Vol 45 (2) ◽  
pp. 169 ◽  
Author(s):  
WD Sumpton ◽  
MA Potter ◽  
GS Smith
Keyword(s):  
Adult Female ◽  
Egg Mass ◽  
Size Distributions ◽  
Adult Males ◽  
Infection Rates ◽  
Portunus Pelagicus ◽  
Female Population ◽  
Moreton Bay ◽  
Adult Females

In Moreton Bay, Queensland, externae of Sacculina granifera Boschma were found in 7.0% of adult males and 123% of adult females of Portunus pelagicus. Infection rates were seasonal for both sexes and higher in the adult female population, with more than 20% of adult females carrying externae during some summer months. Infection rates were less than 3% in areas outside the bay and generally highest in the southern and central bay. Nineteen males and 15 females had abdominal scars where externae had become dislodged. The gonads of most parasitized crabs were underdeveloped, but 5.6% of externa-bearing females and 10% of externa-bearing males also had well developed gonads. Two female sand crabs were found with both a small egg mass and a mature externa (a condition not previously reported). Size distributions of infected and uninfected adult crabs were similar, suggesting that large crabs as well as juvenile crabs were likely to be infected.

scholarly journals Spatial variation in giraffe demography: a test of 2 paradigms

2016 ◽  
Vol 97 (4) ◽  
pp. 1015-1025 ◽  
Author(s):  
Derek E. Lee ◽  
Monica L. Bond ◽  
Bernard M. Kissui ◽  
Yustina A. Kiwango ◽  
Douglas T. Bolger
Keyword(s):  
Population Growth ◽  
Spatial Variation ◽  
Adult Female ◽  
Vital Rate ◽  
Adult Survival ◽  
Continental Scale ◽  
Demographic Rates ◽  
Adult Females ◽  
Calf Survival ◽  
Female Survival

Abstract Examination of spatial variation in demography among or within populations of the same species is a topic of growing interest in ecology. We examined whether spatial variation in demography of a tropical megaherbivore followed the “temporal paradigm” or the “adult survival paradigm” of ungulate population dynamics formulated from temperate-zone studies. We quantified spatial variation in demographic rates for giraffes (Giraffa camelopardalis) at regional and continental scales. Regionally, we used photographic capture-mark-recapture data from 860 adult females and 449 calves to estimate adult female survival, calf survival, and reproduction at 5 sites in the Tarangire ecosystem of Tanzania. We examined potential mechanisms for spatial variation in regional demographic rates. At the continental scale, we synthesized demographic estimates from published studies across the range of the species. We created matrix population models for all sites at both scales and used prospective and retrospective analyses to determine which vital rate was most important to variation in population growth rate. Spatial variability of demographic parameters at the continental scale was in agreement with the temporal paradigm of low variability in adult survival and more highly variable reproduction and calf survival. In contrast, at the regional scale, adult female survival had higher spatial variation, in agreement with the adult survival paradigm. At both scales, variation in adult female survival made the greatest contribution to variation in local population growth rates. Our work documented contrasting patterns of spatial variation in demographic rates of giraffes at 2 spatial scales, but at both scales, we found the same vital rate was most important. We also found anthropogenic impacts on adult females are the most likely mechanism of regional population trajectories.

Observations on the Luminescence of the Larval Glowworm, Lampyris noctiluca L. (Col. Lampyridae)

1974 ◽  
Vol 5 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Hans Dreisig
Keyword(s):  
Adult Female ◽  
Full Moon ◽  
Late Summer ◽  
Active Period ◽  
Ambient Illumination ◽  
Experimental Conditions ◽  
Adult Females ◽  
The Difference

AbstractThe larval luminescence in L. noctiluca consists in a glow lasting for several seconds (average 7.3 sec.) emitted at irregular intervals while the animal is crawling about during the active period at night. In the adult female the glow is continuous often for several hours. Also some larvae in the last instar were able to glow continuously for hours. Onset of activity in the larvae occurred at a lower critical ambient illumination (6.85 log lux +10) than in adult females (10.10 log lux+10). The dispersion of onsets was greater in larvae than in females. The duration of luminescent activity in the field was ca. 5 hours and at experimental conditions ca. 8 hours. In thc field larvae were mostly seen during late summer, probably because of the low critical illumination, which was also the reason why activity was suspended on moonlit nights. The intensity of moonlight around full moon was ca. 8.00—9.00 log lux+10. In the discussion the following subjects are treated: The function of larval luminescence; the reaction of larvae to ambient illumination; and the difference between glowing and flashing.

SEARCHING BEHAVIOUR OF ADULT FEMALE COCCINELLIDAE (COLEOPTERA) ON STEM AND LEAF MODELS

1994 ◽  
Vol 126 (2) ◽  
pp. 389-399 ◽  
Author(s):  
B.D. Frazer ◽  
R.R. McGregor
Keyword(s):  
Ambient Temperature ◽  
Adult Female ◽  
Side Branch ◽  
Searching Behaviour ◽  
Adult Females ◽  
Branching Patterns ◽  
Wooden Dowel ◽  
The Individual ◽  
Species Specific

AbstractBehaviour of locally occurring adult females of seven species of coccinellids was assessed on wooden dowel and paper models that mimicked branching patterns and arrangements of leaf attachments to stems. Ambient temperature and hunger of the beetles were controlled. The movements up or down the main branch of the branch models when contacted from a side branch, duration of searching, and method of leaving leaf models were recorded for 20 beetles of each species.Each species responded to the seven models with different frequencies of behaviours that reflected species-specific modifications of the taxes that lead coccinellids to the tops and terminal parts of plants. Some beetles consistently modified the pattern of responses on die models that was displayed by die species as a whole. The individual modifications could be selected for. The differences in frequencies of behaviours were judged to be sufficient to result in differences in the efficiency with which plants with different architectures were searched.

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