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 250 for “"reproductive biology"”.
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Ebonyshell Host Identification and Reproductive Biology
… host, the skipjack herring. I investigated the reproductive biology of ebonyshell to understand factors limiting its reproduction and to investigate the possibility of captive propagation for population restoration. Ebonyshell have been observed brooding embryos from May to September. The long …
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The Reproductive biology of Erica pudens
… is minimal research examining the pollination biology of specific species. This research inspects the pollination biology of Erica pudens. To do this we carried out pollinator exclusions, hand pollination experiments, rodent trapping, camera observations and pollen/ovule counts. This research …
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The reproductive biology of Clematis addisonii
… Province in Virginia. A two year study of the reproductive biology of this species reveals that it is self-compatible, showing no significant reduction in fecundity following self-pollinations. Morphological observations indicate that this species is protogynous. <i>In vivo</i> pollen tube …
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Selected aspects of common tern reproductive biology
Several factors influencing reproductive success were investigated at a Common Tern colony at Port Colborne, Ontario in 1976. In general three egg clutches hatched better than two egg clutches and early started clutches hatched eggs and fledged chicks better than late clutches; the fledging success …
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The Reproductive Biology of Star Cactus (Astrophytum asterias)
No abstract prepared.
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The reproductive biology of four geoflorous Protea species (Proteaceae)
… This study adds to the growing knowledge of the reproductive biology of Protea and will improve our ability to reconstruct the history of pollinator shifts in the genus.
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Systematics and reproductive biology of the genus Morus L. (Moraceae)
Morus L. (Moraceae) is a temperate and subtropical genus of ten to 15 species distributed in Asia, Africa, Europe, North, Central and South America. Despite its broad distribution and economic importance, it has received little attention from systematic botanists. Two species of this genus, the …
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The reproductive biology of a monoecious grass, Zizania palustris L
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:28Z Item is restricted indefinitely.
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Reproductive biology and ex situ conservation of the genus Restrepia (Orchidaeae)
The genus Restrepia is well known to orchid enthusiasts but its micromorphology has not been described, and its pollination and breeding systems have not been investigated. The aim of this investigation was, therefore, to add to existing knowledge so that the resultant data could be used to …
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Bluegill Reproductive Biology and Population Dynamics in Four South Dakota Impoundments
The bluegill Lepomis macrochirus is an important prey species and important sport fish. Therefore, knowledge of reproduction and subsequent recruitment is essential for fishery biologists. Bluegill are typically considered multiple spawners. Protracted reproduction is likely a response to various …
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Comparative reproductive biology of co-occurring endangered and common shrubland birds
… vireos in where and when they nest confers a reproductive advantage.
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The reproductive biology and ecology of Colchicum (Colchicaceae) in southern Africa
The observation that many plants have developed sets of structural and functional adaptations that encourage visitation by pollinators has led biologists to define pollination syndromes. These syndromes reflect patterns of convergent evolution and serve to generate hypotheses about potential …
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The reproductive biology and ecology of Colchicum (Colchicaceae) in southern Africa
The purpose of this study was to detennine if the rodent pollination system extends to Colchicum, as predicted by Johnson et al. (2001), to test the importance of floral scent for attraction of rodent pollinators, and to investigate the factors that influence seed set in populations.
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Distribution, ecology, and reproductive biology of the orangefin madtom (Noturus gilberti)
Distribution of the orangefin madtom (Noturus gilberti) was determined from 347 sites sampled in Virginia and North Carolina. This species inhabited 264 stream kilometers, over twice the reported range, in the following systems: Craig Creek, Roanoke River, Dan River, Big Chestnut Creek, South Mayo …
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Reproductive biology and denning ecology of Virginia's exploited black bear population
During 1994-1996, reproductive biology and denning ecology of black bears (<i>Ursus americanus</i>) were investigated in the George Washington and Jefferson National Forests, Virginia. The average age of captured bears was 4.88 years (SE=0.43, n=64) and 2.72 years (SE=0.19, n=127) for females and …
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The Reproductive Biology of the Rio Grande Cooter (Pseudemys gorzugi) in Texas
No abstract prepared.
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On the reproductive biology of the western Atlantic bluefin tuna, Thunnus thynnus
… only two spawning grounds are known, fish of reproductively mature size routinely do not return to either of these two locations during the presumed spawning season indicating additional spawning grounds may exist.</p><p>Atlantic bluefin tuna were sampled on and off the known spawning grounds, …
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Reproductive Biology of Alligator Snapping Turtles: Behavior, Reproductive Investment, and Nest Predation
… I studied: (1) nesting behavior and (2) maternal reproductive investment patterns in a captive alligator snapping turtle population housed outdoors under semi-natural conditions, and (3) nest predation patterns in a reintroduced population. Both sites were located in the species' geographic range …
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Reproductive Biology and Conservation Genetics of the Alligator Snapping Turtle (Macrochelys Temminckii)
… only found in Gulf of Mexico drainages. The biology of this species remains relatively unknown, despite years of harvest and use as a zoological attraction. The purposes of this study were to (1) determine gender size classes and assess sexual size dimorphism, (2) delineate the reproductive …
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