Phyllopod Shrimp Populations of the Big Alkali Lake Drainage, Nebraska and Their Relationship to Young Pike (\u3ci\u3eEsox lucius\u3c/i\u3e)

Random sampling with a fine-mesh dip net in the drainage pools south of Big Alkali Lake, Cherry County, Nebraska, indicated a spring abundance of anostracan and notostracan phyllopods, commonly called fairy shrimps and tadpole shrimps. Collections were made during the months of April and May of 1957 and 1958, and specimens were submitted to Dr. Ralph W. Dexter, Professor of Biology, Kent State University, Ohio, for identification. The 1957 collections were fairy shrimps of the species Chirocephalopsis bundyi while those of 1958 were tadpole shrimps\u27, Lepidurus couesi. The presence of L. couesi establishes a new state record for this phyllopod

Phyllopod Shrimp Populations of the Big Alkali Lake Drainage, Nebraska and Their Relationship to Young Pike (\u3ci\u3eEsox lucius\u3c/i\u3e)

Random sampling with a fine-mesh dip net in the drainage pools south of Big Alkali Lake, Cherry County, Nebraska, indicated a spring abundance of anostracan and notostracan phyllopods, commonly called fairy shrimps and tadpole shrimps. Collections were made during the months of April and May of 1957 and 1958, and specimens were submitted to Dr. Ralph W. Dexter, Professor of Biology, Kent State University, Ohio, for identification. The 1957 collections were fairy shrimps of the species Chirocephalopsis bundyi while those of 1958 were tadpole shrimps\u27, Lepidurus couesi. The presence of L. couesi establishes a new state record for this phyllopod

OCCASIONAL PAPERS ON THE LIMNOLOGY OF NEBRASKA

Nebraska limnological studies got under way throughout the state during 1966. Since this was the first full year of activities, field collections were made at as many sites as possible to accumulate extensive limnological data from which to determine lakes for future studies. A total of 44 reservoirs, natural Sand Hill lakes, rainbasin lakes, and Interstate 80 lakes was sampled. Methodology was perfected throughout the year in order to establish sampling techniques applicable to both natural and impounded waters. Preliminary data revealed some conspicuous differences in physiochemical and biological characteristics from the geographically different regions of Nebraska. Distributions of properties and qualities, measured quantitatively in time and space, will express biological variations occurring within and between individual lakes. Within the scope of these Occasional Papers, limnology projects throughout Nebraska will be summarized

Pike Hybrids (\u3ci\u3eEsox lucius\u3c/i\u3e x\u3ci\u3e E. vermiculatus\u3c/i\u3e) in a Sandhill Lake, Nebraska

In the sandhill region of Nebraska both northern pike, Esox lucius, and grass pickerel, Esox vermiculatus, are abundant in several shallow natural lakes. Both species are known to utilize the same vegetative habitat for spawning during March and April. The pike is an important game species but the smaller pickerel is of little value to fishermen although in winter is at times taken by angling through the ice

Pike Hybrids (\u3ci\u3eEsox lucius\u3c/i\u3e x\u3ci\u3e E. vermiculatus\u3c/i\u3e) in a Sandhill Lake, Nebraska

In the sandhill region of Nebraska both northern pike, Esox lucius, and grass pickerel, Esox vermiculatus, are abundant in several shallow natural lakes. Both species are known to utilize the same vegetative habitat for spawning during March and April. The pike is an important game species but the smaller pickerel is of little value to fishermen although in winter is at times taken by angling through the ice

Some Ecological Relations of Fairy Shrimps in Alkaline Habitats of Nebraska

Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are chemically different from the sodium chloride waters common throughout the western United States. The Nebraska Sandhill Region, an area of about 20,000 sq miles, is a plains environment that has been extensively modified by wind. It is a region of vegetated sandhills, sandy basins and valleys, with numerous exposed ground-water lakes and marshes of a permanent or seasonal nature (Fig. 1). An extensive limnological inventory of the aquatic habitats of the sandhills was undertaken between 1954 and 1961. This inventory was used to formulate a management program for sport fisheries (McCarraher, 1961). About 1640 lakes were investigated and an additional 850 permanent, smaller lakes less than 10 surface acres were recorded. In addition to permanent water, numerous seasonal pools were found. Periodic sampling of these permanent lakes and numerous seasonal ponds was carried out during all months of the year over a 12-year period from 1954 to 1968. This paper reports on the distribution of phyllopods in alkaline lakes of Nebraska and describes the quality of water and associated biota. The inland mineral waters of arid regions of the western United States have been designated as saline since sodium chloride is the principal solute with a pH value normally less than 8.8. In Nebraska\u27s alkaline waters chloride salts occur in insignificant quantities. For this reason the term salinity, used in describing marine or inland chloride and sulfate waters, is employed here as a collective term for all dissolved ionic constituents, with concentrations expressed as parts per million (ppm)

Northern Pike, \u3ci\u3eEsox lucius\u3c/i\u3e, in Alkaline Lakes of Nebraska

Pike (Esox lucius) were studied in alkaline sandhill lakes from 1956 through 1961. Fry and fingerlings were released in alkaline environments as part of a continuing ecological study of survival and growth of northern pike in Nebraska waters. Survival and growth were determined by intensive nettings at release sites. Chemical, biological, and physical characteristics of each lake were investigated (Table 1). The majority of the nearly 2,000 Nebraska sandhill lakes may be classified as alkaline eutrophic of the bicarbonate-sulfate group (McCarraher). Salts other than chlorides predominate in these natural lakes supporting a biota somewhat different from inland chloride or saline waters. The sandhill lakes differ chemically from inland mineral areas in other regions (Rawson and Moore, 1944; Huntsman, 1922; Moyle, 1956; Young, 1924.)

iPrevent

Curso de Especial InterésLa siguiente propuesta, contiene la información necesaria para poder asesorar y brindar una mejor atención a los procesos que son inherentes a la sexualidad del ser humano. El diseño de la creación de una aplicación llamada iPrevent, usada en aparatos tecnológicos como los móviles con sistema Android y Apple. Esta aplicación está encaminada a presentar y a exponer los distintos métodos anticonceptivos que se encuentran en el mercado, así mismo brindar un marco de conocimiento de cada uno, para facilitar la toma de decisiones de los adolescentes; de esta manera teniendo una correlación con la salud pública y mitigar los embarazos no deseados y posibles interrupciones voluntarias del embarazo (IVE) y uso de Métodos Anticonceptivos de emergencia en esta población.101 p.1. Resumen 2. Justificación 3. Marco teórico 4. Objetivos 5. Metodología 6. Estudio de mercadeo 7. Resultados 8. Discusión 9. Conclusiones y recomendaciones 10. Referencias 11. ApéndicesPregradoPsicólog

'Pregnancy comes accidentally - like it did with me': reproductive decisions among women on ART and their partners in rural Uganda

<p>Abstract</p> <p>Background</p> <p>As highly active antiretroviral therapy (ART) restores health, fertility and sexual activity among HIV-infected adults, understanding how ART influences reproductive desires and decisions could inform interventions to reduce sexual and vertical HIV transmission risk.</p> <p>Methods</p> <p>We performed a qualitative sub-study among a Ugandan cohort of 1,000 adults on ART with four purposively selected categories of participants: pregnant, not pregnant, delivered, and aborted. In-depth interviews examined relationships between HIV, ART and pregnancy, desire for children, perceived risks and benefits of pregnancy, decision-making regarding reproduction and family planning (FP) among 29 women and 16 male partners. Analysis focused on dominant explanations for emerging themes across and within participant groups.</p> <p>Results</p> <p>Among those who had conceived, most couples stated that their pregnancy was unintentional, and often occurred because they believed that they were infertile due to HIV. Perceived reasons for women not getting pregnant included: ill health (included HIV infection and ART), having enough children, financial constraints, fear of mother-to-child HIV transmission or transmission to partner, death of a child, and health education. Most women reported FP experiences with condoms and hormonal injections only. Men had limited FP information apart from condoms.</p> <p>Conclusions</p> <p>Counselling at ART initiation may not be sufficient to enable women who do not desire children to adopt relevant family planning practices. On-going reproductive health education and FP services, with emphasis on the restoration of fertility after ART initiation, should be integrated into ART programs for men and women.</p