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 10 of 10 for “"Reproductive seasonality"”.
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Distribution, Relative Abundance, and Reproductive Seasonality of Larval Fish in the Red River
<p>Spawning habitat availability and reproductive timing are crucial factors that affect survival of larval fish. To understand temporal and spatial variation in larval fishes in the Red River, samples were collected from the Red River and North Dakota tributaries using ichthyoplankton nets. …
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The reproductive seasonality and flight capability of Sitona discoideus Gyllenhal (Coleoptera: Curculionidae) and its pattern of larval establishment in Canterbury lucerne
… to improve the level of understanding of the reproductive seasonality and flight potential of Silona discoideus Gyllenhal, samples were taken at regular intervals from lucerne (Medicago saliva L.) stands throughout the 1982-83 and 1983-84 seasons. Changes in the weevil's reproductive condition …
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Life history, diet and distribution of three grenadier species in South Africa
… calculate their index of relative importance, reproductive seasonality was assessed, and the ovarian organisation of Coelorinchus simorhynchus and Malacocephalus laevis were described. Macroscopic and histological images of female and male gonads are presented here for the first time. These …
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Reassessing the Ranging Behavior of Black-And-White Ruffed Lemurs (Varecia variegata) in Ranomafana National Park, Madagascar
… across <em>i</em>) age-sex class, <em>ii</em>) reproductive seasonality, <em>iii</em>) site topography and <em>iv</em>) resource availability and distribution.</p> <p>Results reveal that both annual and seasonal home range size and spatial use varied between males and females, as well as within …
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Updated life history and population structure assessment of spiny dogfish, Squalus acanthias, in the Gulf of Maine
… pressure. Also, there was no change in the reproductive seasonality or magnitude of morphological, histological, or physiological parameters in mature individuals over this time. However, using a suite of characteristics to define maturity, there was a decrease in size and age at maturity as …
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Reproductive Biology of the Bonnethead (Sphyrna tiburo) from the Southeastern U.S. Atlantic Coast
… populations, particularly by identifying reproductive seasonality, periodicity and fecundity. This was accomplished by examining sexually mature male and female bonnetheads, collected monthly (2012-2014) from South Carolina, Georgia, and Florida waters, and monitoring changes in …
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PHYSIOLOGICAL APPROACH TO THE STUDY OF AUTOCHTHONOUS SMALL RUMINANTS BREEDS OF ITALY
… on the study of physiological productive, reproductive, immunological, and metabolic aspects of four local goat breeds of Northern Italy (Frisa Valtellinese, Orobica, Lariana, and Verzaschese goats), on which the information is still very limited. Moreover, we have compared the results …
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Characterization of seasonal reproduction in Virginia Tech Selection Line, St. Croix, and Suffolk ewes
… ewe model to compare degree of reproductive seasonality in different breeds.
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The impact of habitat quality on female red colobus monkey (Procolobus rufomitratus) reproduction
… Uganda. Because energetic constraints impact reproductive function in female primates, this dissertation includes data on feeding ecology, activity budgets, mating behaviors, ketone levels, and reproductive hormone concentrations. This multi-faceted approach tests a model in which habitat …