Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 48 for “"Reproductive status"”.
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Evaluation of salivary progesterone profiles as an indicator of reproductive status in equines
Diagnostic assays of reproductive hormones are usually performed by veterinarians on mares after inconclusive findings from trans-rectal palpation or ultrasound genital examination, or on intractable mares. Of the reproductive hormones, progesterone (P4) is one of the most commonly measured …
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Use of electrical impedance spectroscopy (EIS) for diagnosis and prediction of reproductive status in female swine
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Differentiation in reproductive potential and chemical communication of reproductive status in workers and queens of the ant Myrmecia gulosa
Division of reproductive labour in societies represents a topic of interest in evolutionary biology at least since Darwin. The puzzle of how helpers can be selected for, in spite of their reduced fertility has found an explanation in the kin selection theory: workers can overcome the cost of …
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Selected elements in Lake Michigan round goby (Neogobius melanostomus) reproductive physiology: spawning effort and determination of reproductive status of females and sperm competition in two reproductively distinct male morphs
… impacts and behavior of round goby, their basic reproductive biology and physiology in invaded systems is understudied. This study evaluated spawning effort and determination of reproductive status of female round goby and sperm competition in two alternative reproductive tactics of male round …
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Monitoring and improving reproductive performance of crossbred dairy cattle in Tigray Region, Ethiopia
… an extensive livestock population; however, reproductive performance of cattle and their breeding management are unsatisfactory. Currently, the sole diagnostic tool in the country is rectal palpation, which is inaccurate for early pregnancy in cattle. The study assessed reproductive …
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A Physiological Age-Grading System for Female Hydrellia pakistanae Deonier (Diptera: Ephydridae)
… using ovarian morphology to detect changes in reproductive activity is useful for evaluating reproductive status of the fly in field populations. Changes in the appearance of follicular relics in ovaries with oviposition provide a reliable method to estimate fecundity. Characteristics of …
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Approaches for assessing the presence and impact of thyroid hormone disrupting chemicals in delphinid cetaceans
… to factors such as ontogeny, water temperature, reproductive status, and nutritional state because blubber is also the primary bioaccumulation site for persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs). During periods of lipid mobilization such as lactation, PCBs from …
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Factors influencing female food-for-work participation in the Southern Shoa region of Ethiopia
… indicate that family size, occupation, marital status, reproductive status, total non-food expenditures, amount of output sold from agricultural production, women's wages from FFW and wages from other agricultural work were the most significant factors influencing female FFW participation. The …
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Approaches for assessing the presence and impact of thyroid hormone disrupting chemicals in Delphinid cetaceans
… to factors such as ontogeny, water temperature, reproductive status, and nutritional state because blubber is also the primary bioaccumulation site for persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs). During periods of lipid mobilization such as lactation, PCBs from …
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Molecular characterization of rodent- and-shrew-borne viruses and the prevalence and intensity of infestation of small mammal fleas, in Namibia
… host sex, body mass, head-body length and reproductive status. A total of 358, fleas belonging to 9 species (Chiastopsylla rossi, Xenopsylla cheopis, X. brasiliensis, X. hirsuta, X. nubica, X. philoxera, X. piriei, X. versuta, Listropsylla aricinae) were recovered. These fleas were …
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A Method for Detecting Nesting Activity, Thermal Implications of Different Nesting Strategies, and Activity Patterns of Ornate Box Turtles (Terrapene Ornata)
… that relative humidity, precipitation and turtle reproductive status affect turtle activity, and that thermal extremes restrict activity on both daily and seasonal scales in this northerly population. Activity levels were lower during an unusually warm summer.
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The Ontogeny of Spatial Ecology and Habitat Use in a Population of Cottonmouths (Agkistrodon Piscivorus) in Southwest Missouri
… is evidence that ontogeny, along with sex and reproductive condition, may play a large role in spatial distribution within snake populations. I tracked eight juvenile cottonmouths (Agkistrodon piscivorus) during the summer and fall of 2008 to determine how their home ranges, rates and …
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Variation in Behavior of Different Populations and Sex Classes of Paedomorphic Oklahoma Salamanders
… differences in body size, age, sex, and reproductive status can contribute to behavioral variation among conspecifics. Environmental influences include predation pressure, resource availability, and abiotic variables such as temperature. I examined paedomorphic Oklahoma salamanders …
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Photoperiodic Control of Reproduction in Male Hispid Cotton Rats, Sigmodon Hispidus
… hispidus, has been shown to have a seasonal reproductive cycle and may use photoperiod to regulate this cycle. Male Sigmodon were placed in differing photoperiods, and serum prolactin, testicular size, testicular mass and spermatogenic activity were measured as parameters of reproductive …
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A bioenergetic simulation model of orchard populations of the pine vole (Microtus pinetorum)
… on a weekly basis as functions of bioenerqetic status. Forage gross energy availability, digestibility, palatability, and preference were functions of Julian day. Daily energy budget (DEB) was a function of age, reproductive status, body weight, ambient temperature, and daily activity level. …
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Sociality in African mole-rats : exploring how rainfall affects dispersal and genetic exchange in the Natal mole-rat (Cryptomys hottentotus natalensis)
… have been a few studies on their physiology and reproductive suppression, but their ecology and life history has not been reported in detail. This study used capture-mark recapture methods to investigate life history, population demographics, behaviour, and gene flow in wild Natal mole-rats …
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Progesterone and Prolactin Profiles of the Female Asian Elephant (Elephas Maximus)
… and prolactin may be utilized to assess reproductive status (estrous cycle length, estrus predictin, pregnancy) in female Asian elephants.
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