für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Tapinoma melanocephalum have a special place in the myrmecological studies because of their typical behavior. They have been found significant in many of the social, economic and scientific studies. The present work describes in details about the behaviour, habitat, fooding habits, nest architecture of Tapinoma melanocephalum.To conduct the study, site has been selected in the regions of gardens, agricultural fields and roadside areas which are located in the city Varanasi, Uttar Pradesh, India. Following standard procedures and techniques of myrmecological studies, nests were excavated to collect the necessary data and ant samples for microscopic studies in the laboratory. Statistical parameters have been used to analyze their population, nest architecture and dimensions. ····· 10361119464
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work was undertaken to describe the various features of gut morphology of some mammalian species feeding on different diets. The investigated animals including the long eared hedgehoge, frugivores bat, mice, rabbit and dog. The study was also extended to investigate the gastrointestinal mucosa uses the light, scanning and transmission electron microscopy in an attempt to explain the histological and ultrastructural adaptations responsible for the digestive and absorptive capacities of the intestines of the studied species. ····· 10361119300
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray All crocodilians have a particular category of signals used as advertisement calls during the mating season. Each call is a combination of a few components with different physical properties, such as body postures, vocal calls, headslaps, and infrasound vibrations. These components differ in their capacity to carry information about the animal`s status and location, and their use is adapted to habitat structure. Vocal sounds are used more in fragmented aquatic habitats where they are more effective, while slaps are used more in continuous aquatic habitats. A comparison of signaling and preferred habitats by extant crocodilian species, as well as of signaling by allopatric conspecific populations inhabiting different habitats, confirms this theory. But in populations inhabiting mixed habitats, individual animals do not adjust their signal composition to habitat structure, which means that the observed differences between populations and species are evolved adaptations. In the course of the study, novel information on signaling was obtained for many crocodilians, providing insights into their ecology and evolutionary history. ····· 10361119097
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Nullah Aik and Nullah Palkhu are important water resources in Sialkot and receive industrial effluents, municipal sewage that degrade the water quality and disrupt the ecological integrity. During present study, water and fish samples were collected at 18 sampling sites on seasonal basis from 2004 to 2006. Water samples were analyzed for 38 parameters. Cluster Analysis identified three different classes relatively unimpaired, impaired and less impaired regions on the basis of variations in water quality. COD, TDS, Fe, Pb, Cd, Cr and Ni were found to be higher than the permissible limits Significant variations in heavy metals accumulation were observed in organs of studied fish species. The concentration of Pb and Cr was recorded higher than permissible limits. A total of 24 fish species of 12 families were recorded. Biological Integrity index was developed for the assessment of stream health. Sites located in upstream of Nullah Aik showed higher IBI scores, which dropped to its lowest in downstream sites near Sialkot city, which gradually improve far downstream. These results can be helpful for future management of other polluted streams and small rivers in the same eco-region. ····· 10361118949
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In agricultural habitat 10 bumblebee species were recorded of which 68.62% bumblebees were dominated by five species. However, in non-agricultural habitat 13 bumblebee species were recorded and more than 50% bumblebees were dominated by four species. Significant variations were observed in the species richness of non-agricultural habitat but none in case of abundance at habitat level. However, same was true in case of non-cropped area as compared to cropped area in agricultural habitat which reflected the importance of non-cropped area as a refuge area for the development of bumblebee colonies which ultimately play a vital role in the pollination of crops, increasing their quality and quantity. Trifolium alexandrinum. Medicago sativa and Solanum tuberosum were visited by all bumblebee species in the cropped area. Forage species separated in to two conspicuous groups depending upon their utilization by bumblebees as a short and long tongued bumblebees. Long tongued bumblebees were only attracted to Ranunculus sp., Raphanus raphanistrum, Centaurea cyanus, Prunella vulgaris, Cana indica, Stachys spp., Cirsium sp., Trifolium pretense, Delphinium brunonianum and Lonicera periclymenum. ····· 10361118893
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The present work revealed the destructive effects of ultraviolet radiation-A on the morphological, histological and biochemical characteristics of the early developmentalstages of Aafrican catfish, Clarias gariepinu (Burchell, 1822). These destructive effects were also studied on the developmental stages in terms of incubation time, hatching rate, mortality rate, morphological malformations and histopathological changes in some organs. The genotoxicity caused by UV-A was studied. ····· 10361118745
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray `It is said that earliest life originated in water but now we are facing danger of being extinct due to contaminated water`.So this book is focused on Microcystis aeruginosa and their toxic effect on fish life.Microcystis is a unicellular, colonial cyanobacterium commonly found in freshwater habitats. This algae characteristically form dense unialgal growth often referred to as a bloom or `tides`. Serious illness such as hepatoenteritis, a symptomatic pneumonia and dermatitis may result from consumption or contact with water contaminated with toxin producing cyanobacteria. Microcystis produces toxin known as `microcystin` and this toxin is responsible for human illness, bird mortality and extensive fish kills. Generally microcystin is hepatotoxic in nature. The entry of microcystin into hepatocytes of liver and other targeted tissues is accomplished by the broad specificity anion transport bile acid carriers. Extensive research has shown the impact of Microcystis extract resulted apoptosis, necrosis, pycnotic nuclei, blood depletion, hemorrhage, swelling in fish liver, gills, kidney, gonads and showed variations in biochemical, haematological and blood protein studies. ····· 10361118525
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Impact of insecticide treated nets were studied in the mid 90 ies showing significant reduction of all cause children mortality less than 5 year and on clinically confirmed malaria. Since then, bednet studies focused on vector impact, while technology changed from dipping to long lasting pre-treatment. Preliminary WHO recommendation of LLIN is based on short term studies of vector impact and wash resistance. However, most loss of insecticide is not due to washing Preliminary WHO recommendations of LLIN are based on short term studies on vector impact and wash resistance. However, in Sub-Saharan African settings, loss of insecticide is not primarily due to washing, but to handling and evaporation. Netprotect a second generation LLIN with a preliminary WHO recommendation was evaluated in aspects of malaria vector control, epidemiology and durability.This book is useful to reseachers, policy makers and medical workers in malaria control. ····· 10361118422
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The day by day progress of Pakistan has resulted in the development of industries and towns. Contamination is a problem which is related with this progress. Gujranwala District is one of the most developed and industrialized parts of Pakistan selected for this research. In current study seven heavy metals Hg, Pb, Ni, As, Cu, Cd and Ag were detected in the meat samples of cattle (Buffaloes). Out of these, mercury, lead, cadmium and arsenic are the principal lethal metals. The reason for selecting cattle is that they feed on vegetation and are infected by metal pollution as much as the humans. The main reasons for pollution by metals are industries, automobiles, polluted water, pesticides in fields and contaminated soil. ····· 10361118246
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The aim of study was to determine the contamination in the meat and organs liver, lungs, kidney and muscles reared in pesticide spraying areas of Gujrat, Pakistan. Because no such published information is available in this region.The meat and organs such as liver, lung, kidney and muscles were collected from different locations of intermittent areas of Gujrat city.The pesticide analyzed in the collected organs (n=80) with high performance liquid chromatography techniques. The residue analysis revealed that about 0.5444 % kidney, 0.617933% liver, 0.431867% lungs and 0.819733% muscles samples were contaminated with dimethoate. The trend of pesticide contamination was observed as Muscles Liver Kidney lungs. Pesticides residues in organs were found higher than the Maximum Residual Limit (MRL) established by the international health. ····· 10361118142
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Community and diversity of waterfowls in Santragachhi Wetland have been studied in four months during the winter period of 2008-2009, which is the season for migratory water birds. The diversity has been studied with respect to cumulative species richness and relative abundance, Shanon-Weiner diversity, bootstrap richness, Chao 1 richness, Coleman rarefaction richness. Attempts were also made to find a correlation with these parameters to the photoperiod of the day. Some of the potential threats of the wetland as well as the inhabitants have also been noted. In this current project the status and distribution of waterfowls in Santragacchi wetland were recorded and their description were described. ····· 10361117928
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La familia Elateridae es considerada, tanto la novena familia más diversa de Coleoptera, como también la más diversa de la superfamilia Elateroidea, con aproximadamente 10.000 especies descritas, de las cuales, 2.500 se encuentran en el neotrópico. Colombia es considerado como un país megadiverso, sin embargo la biodiversidad de insectos en Colombia no se conoce completamente, ni se conserva de manera adecuada y la acelerada transformación de los ambientes naturales, con la consecuente extinción de especies vegetales y animales, confirman la urgencia de estudiar la biodiversidad del país. Esta escasez de conocimientos en torno a los diferentes grupos, especialmente Coleoptera, dificulta considerablemente dichos planes de conservación. Considerando el estado actual del conocimiento de los elateridos en nuestro país y, en particular, en el área comprendida por el Valle del Cauca, es más que pertinente llevar a cabo un estudio taxonómico de los elateridos del valle del cauca que permita conocer la biodiversidad local y asi mismo nacional. ····· 10361117538
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El Paujil de pico azul (Crax alberti) es un ave endémica de Colombia, la cual se encuentra críticamente amenazada de extinción (CR) y se conoce muy poco acerca de su biología y ecología. En el presente trabajo se identificaron aspectos del comportamiento, dieta y el uso del hábitat del Paujil en los bosques tropicales del piedemonte de la serranía de las Quinchas, vertiente occidental de la cordillera oriental, Reserva Natural el Paujil, en los departamentos de Boyacá y Santander, entre Septiembre de 2005 y Mayo de 2006. Esperamos que los resultados expuestos en el presente documento aporten evidencias concretas sobre las relaciones entre la estructura del hábitat y la presencia y abundancia de la especie en la zona, ademas de otros aspectos de su historia natural, que permitan complementar y mejorar los actuales planes de conservación. ····· 10361117046
für 26.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Uno de los mayores problemas con los que se encuentran actualmente los alcornocales es la denominada `Seca`.Dentro de las plagas que actúan como factores para esta enfermedad, merecen una atención especial por la importancia de los daños que generan,son las especies del género Cerambyx y otros géneros de vida similar. Se les puede considerar como otro de los factores derivados de esta desconocida multienfermedad, en la que los hongos provocan un decaimiento generalizado en los Quercus y vuelven al árbol propenso a la entrada de escarabajos perforadores y comedores de madera como estos insectos. Debido a los daños que esta plaga provoca en el arbolado, en nuestro caso en Quercus suber, los objetivos perseguidos en el presente trabajo son los siguientes: -Ofrecer un porcentaje aproximado de la pérdida de corcho ocasionada por los cerambícidos. -Evaluar, con los datos actuales del mercado, las pérdidas económicas que se han producido en el corcho por acción de los cerambícidos. ····· 10361116489
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Los resultados de esta tesis doctoral complementan el conocimiento previo de la bioecología de Streblote panda (Lepidoptera, Lasiocampidae), aportando y comparando datos inéditos, a la vez que confirma algunos ya publicados. Suministra información bioecológica básica que puede resultar importante para el desarrollo y ajuste de planes de manejo integrado, respetuosos con el Medio Ambiente, y concretos para el control de esta especie, que puede presentarse como plaga local, con especial incidencia sobre las plantas jóvenes durante el periodo de implantación y aclimatación de varios cultivos perennes, ornamentales y frutícolas. Se aporta la descripción morfológica de todos sus estadios vitales, así como su caracterización estadística, lo cual permite su adecuada determinación. Se aportan estudios biométricos de la distribución de frecuencias de la anchura de la cápsula cefálica de las orugas para determinar el número de edades y su tamaño así como un modelo de desarrollo basado en la acumulación de días grado. Se analizan las relaciones entre las plantas nutricias y el comportamiento alimenticio del insecto a través de parametros propios de los estudios de ecología nutricional. ····· 10361116321
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The thesis entiled Studies on monogenoideans of siluriformes of U.P. and Bihar deals with the taxonomical studies of some known and unknown species of freshwater Siluriformes fishes. In all new and known species have been studied. These parasite when present in large amount they can hamper the growth of the fishes and even can produce large amount of martalities of these animals and therefore can produce ill affects on aquaculture. ····· 10361115891
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Over the last few years, the use of histological, histochemical and ultrastructural studies with scanning and transmission electron microscope become a good tools in Comparative Anatomy studies of some parts of the digestive system of different vertebrates.Three separate parts buccal cavity, intestine and liver of fish and the tongue of birds were investigated. The investigation should help shed some light on these parts relating the structure to the function.These studies should be especially useful to comparative anatomists, histologists, pathologists, ornithologists and marine biologists. ····· 10361115880
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Different factors thought to have effect on the mortality of lambs w.r.t. 3 breeds of sheep have been presented. Kacchi breed had the highest lamb mortality (14.2%) followed by Thalli breed (11.9%) while that of Pak-Karakul was the lowest (7.3%). Female lamb had the highest overall mortality rate (10.2%) while that of male was the lowest (8.8%). The lamb had the highest overall mortality rate (36.7%) between age group of 91-120 days (3 months) while between 1-30 days (1 month) of age, mortality was the lowest (4.7%).The lamb had the highest overall mortality rate (12.2%) during spring while it was the lowest (5.5%) in summer. The lamb had the highest overall mortality rate (43.7%) due to pneumonia followed by gastro-enteritis (19.2%) and heat stroke (10.7%). The lamb had the highest overall mortality rate (44.1%) of the dam having 3 years of age followed by 4 years of age of dam (25.7%). Proper feeding of the pregnant ewes, controlled breeding and better management before lambing can play an important role in reducing the mortality. ····· 10361115601
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Aphids are most important group of phytophagous insects having several biological peculiarities such as prolific breeding, polyphagism, advanced degree of polymorphism, telescopic reproduction, host alternation and high potential for rapid evolutionary changes because of parthenogenesis and polyvoltinism. Some aphids are anholocyclic (parthenogenetic), while others living in colder climate are holocyclic (sexual generation alternates with parthenogenetic ones). About 20% of the described species from India are parthenogenetic virginoparous for most of the year but capable of sexual reproduction with production of eggs. The present contribution is a first consolidated account of aphid sexuales so far known from India. It incorporates detail illustrative account, morphological descriptions and morphometry of aphid sexuales with necessary keys for identification. Light has also been thrown on the holocycly of aphids occurring in Indian scenario. The book, thus, fulfils the maximum lacunae found in the earlier works on the sexual morphs of India. It is believed that the contribution, being first of its kind in India will prove a useful addition to the libraries and to the large section ····· 10361115541
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Arsenic, a potent toxic mutagenic and xenobiotic metalloid, has been detected during the last 5 years as a major pollutant of drinking water in Bangladesh, Northern Chile, Thailand, Taiwan, China, Inner Mongolia, Mexico, Argentina, Finland, Hungary and India. Both the Agency for Toxic Substances and Disease Registry and the US Environmental Protection Agency have given the highest priority to arsenic-related toxic studies and ranked it number one on the most hazardous substances list, based on a combination of its incidence, toxicity and potential for human exposure. Survey reports revealed that the intake of arsenic-contaminated drinking water caused several reproductive disturbances in women. There is a lack of literature data related to the effect of arsenic on male reproduction, particularly at the dose levels occurring in drinking water in wide areas of India and in other countries. Therefore we have evaluated systematically and presented data in this book whether arsenic has any significant effect on reproduction and metabolism in adult male Swiss albino mice. This book also provides valuable information on protective effect of thiol compounds on arsenic-induced toxicity. ····· 10361115404
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book describes advantages and disadvantages of House sparrow and how it damages the crops as pest. What control measures people have been and are taking to control this pest. Different mthods have also been described to prevent the damages they cause to agriculture. Breeding behaviour of House sparrow has been described in detail. Type of feed young and adult feed on has been described in detail. Parental care of this bird has also been described. In the second part effects of a homeopathic medicine, Natarum muraticum have been investigated. When this medicine was fed to male and female House sparrow it drastically damaged the reproductive potential of both male and female house sparrow. The birds fed on Natrum muraticum totally failed to produce sperms and eggs and were no more fertile. ····· 10361115033
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Bumble bees are one of the important wild pollinator all over the world. These are advantageous over honeybees due to long working hours, long tongue length, and their capacity to forage at low temperature and low light intensities. Declining honey bee population due to various pest and diseases it necessitates the conservation and augmentation of wild pollinators like bumble bees and solitary bees.Keeping in view the domicilation work of bumble bees (Bombus sp.) was taken up for the first time in India during 2006-07. We successfully raised the thirty seven per cent progeny for 7-9 months under artificial confinement. Diurnal activity was also recorded at their natural nests from dawn to dusk period. Foraging activity on different fruits and vegetables was recorded. Developed colony was used for cucumber pollination grown under polyhouse the first time in India. ····· 10361114888
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The book offer a comprehensive and biodiversity study of Mites deal with species diversity and the interrelationships with nature. The book thoroughly covers the fundamental as well as applied aspects of the subject. Specimens were collected from various villages and forest area including agriculture area of the Junagadh district, Gujarat State, India. The book is meant for graduate, postgraduate students and researcher of zoology, Agriculture and entomology of most of the colleges and universities. ····· 10361114775
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Literature survey clearly indicates that fresh water prawns, despite being important member of food chain, good bio-indicator and having high economical value, have not been properly studied in relation to metal toxicity. Considering economical and good bio-indicator value of fresh water prawns, present work has been taken into account to evaluate behavioural, haematological and histopathological effects of mercuric chloride and nickel chloride on Macrobrachium lamarrei and Macrobrachium dayanum, prawn species, abundantly available in Lucknow. The research work incorporated in present thesis is represented in three sections. Section-I deals with bioassay experiments Section-II deals with behavioural, haematological and histopathological effects of mercuric chloride while Section-III deals with behavioural haematological and histopathological effects of nickel chloride on fresh water prawns, Macrobrachium lamarrei and Macrobrachium dayanum, good bio-indicators and potential animals for fresh water aquaculture. ····· 10361114748· 1 · ::::: · 8 ·· 9 ·· 10 ·· 11 ·· 12 ·· 13 ·· 14 · ::::: · 20 ·
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