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 20 for “"breeding behavior"”.
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Breeding behavior of captive emperor penguins (Aptenodytes forsteri)
<p>Breeding behavior of captive Emperor Penguins (Aptenodytes forsteri) was observed at Sea World, San Diego, California during July, August, and September 1980, and April 1981. Emphasis was on displays, courtship, egg-laying, incubation, and care of chicks.</p> <p>I observed the trumpet display …
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Effects of Anthropogenic Light and Noise on Anuran Breeding Behavior
… from anthropogenic light and noise alters animal behavior. Despite being highly nocturnal and vocal animals, little attention has been given to anurans and the effects artificial light at night and anthropogenic noise have on their behavior. This study investigated the effects of artificial light …
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Breeding Behavior and Reproductive Success of Chipping Sparrows in Northwestern Minnesota
… (Spizella passerina) was studied during 2 breeding seasons at the University of Minnesota Forestry and Biology Station, Itasca State Park, Minnesota. Reproductive success was determined primarily by the incidence of nest predation. Parasitism by Brown-headed Cowbirds (Molothrus ater) caused …
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Breeding Behavior of Bulked Hybrid Generations of Three Winter Wheat Crosses
Made available in DSpace on 2014-12-04T20:16:39Z (GMT). No. of bitstreams: 1 0001450.pdf: 3481215 bytes, checksum: e08faf736e3b5c702e0faad01d21ddf1 (MD5) Previous issue date: 1949
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Reproductive ecology of the island scrub-jay (Aphelocoma insularis)
… annual fecundity per pair, and documented breeding behavior. Nest predation was the major factor influencing nest success, accounting for 92 percent of documented nest failures. Nests that were initiated earlier in the breeding season, nests that were higher and more concealed, and nests of …
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Genetic diversity of midwestern oat germplasm
… four distance measures and the three types of breeding behavior were examined via correlation and regression. Correlations, where significant, were low to moderate. Regressions, where significant, were primarily linear with low R('2) values. The regression of heterosis on Euclidean distance in …
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Reproductive Endocrinology and Musth-Behavior of a Captive Male Asian Elephant (Elephas Maximus)
Captive breeding programs for Asian elephants (Elephas maximus) in North America are dependent on successful management of male elephants. This is a difficult undertaking, which is made even more difficult by a temporary state of aggressive behavior unique to male elephants called "musth." Musth is …
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Role of 11-ketotestosterone, testosterone, and prolactin in the expression of reproductive behaviors by male bluegill
… maturity involving ""parental"" breeding behavior and precocious maturity involving ""cuckoldry"". Unlike cuckolders, members of the parental life history build nests and provide parental care to the offspring. The research presented in this thesis was performed to elucidate the …
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Demography and Behavior of Western Sandpipers (Calidris mauri) Breeding on the Yukon-Kuskokwim River Delta, Alaska
I conducted demographic and behavioral studies of Western Sandpipers (Calidris mauri) breeding on the Yukon-Kuskokwim River Delta, Alaska (1998-2005). In chapter one, I estimated apparent annual survival (product of true survival and site fidelity) while correcting for the probability of encounter …
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Effects of supplemental food on the behavior, aggression, and paternity status of male Indigo Buntings (Passerina cyanea)
<p>Breeding is an energetically costly activity for birds. If energy-limited, birds may alter their time budgets, reducing time spent in some activities and spending more time in others. To date, no experimental study has investigated the possible effect of food availability on male mate guarding …
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Factors Influencing a Declining Pronghorn Population in Wind Cave National Park, South Dakota
… studies have described spatial relationships and breeding behavior of adults and survival strategies of neonates. However, direct information was not available on the recent decline of pronghorn in WCNP. The primary objectives of this study were to identify factors contributing to the decline of …
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Incubation behavior and dispersal patterns in the Mountain Plover (Charadrius montanus)
… to examine sex differences in natal and breeding dispersal. I used nest locations from a breeding population of plovers in north-central Montana over a 13-year period (1995-2007) to examine patterns of sex bias in their dispersal. Additionally, I looked at the influence of prior …
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Behavior and conservation: hellbender reproductive behavioral responses to poor water quality and the value of private lands research for conservation outreach
The behavior of humans and animals is an important component of conservation. The way people behave can cause environmental harm, but it also can be a solution to conservation challenges. Similarly, wildlife can respond to changing environments in ways that are detrimental to their survival, but …
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Habitat Relationships and Life History of the Rota Bridled White-eye (Zosterops rotensis)
… the decline and gathered more information on the behavior and breeding biology of this species. New life history data were collected and Rota and Saipan bridled white-eyes were found to differ in nest site characteristics and some behaviors. The importance of habitat alteration was assessed by …
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Morphological, Genetic, and Ecological Insights into the Puerto Rican Tody: Investigating Variation Between and Within Dry Forest and Rainforest Populations
… population genetics, disease ecology, and breeding ecology, this research provides an integrated view of how tody populations vary between and within dry forest and rainforest habitats, and how they may respond to future environmental changes. The first study focuses on long-term …
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Is timing everything? Examining the importance of the timing of parasitism to cowbird reproductive success
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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Patterns of Electrical Communication Among Gymnotoid Fish
… the results of a twelve-month field study of the behavior and ecology of gymnotid fish from the Rupununi District of Guyana, South America, and from Trinidad, W.I. There are 13 species of gymnotids in the Rupununi District, of which six to eight species occur frequently in the main study area in …
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Lek ecology of male greater sage-grouse in Carbon County, Wyoming
… managers need to understand how sage-grouse breeding behavior influences long-term reproductive success, and should be able to accurately relate sage-grouse lek count data to population sizes. Behavior during the breeding season, such as how frequently males visit their leks or move among …
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ΒΙΟΛΟΓΙΑ ΚΑΙ ΟΙΚΟΛΟΓΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΤΟΥ ΛΕΥΚΟΤΣΙΚΝΙΑ (EGRETTA GARZETTA) ΣΤΗΝ ΤΕΧΝΗΤΗ ΛΙΜΝΗ ΚΕΡΚΙΝΗΣ ΣΕΡΡΩΝ
… SERRES, FROM MARCH 1988 UNTIL MARCH 1990. THE BREEDING AND FORAGING BIOLOGY OF THE LITTLE EGRET (EGRETTA GARZETTA) WAS STUDIED AS WELL AS THE BEHAVIORAL ECOLOGY OF THE ABOVE SPECIES ACCORDING TO THE SEASONAL FLUCTUATION OF THE WATER LEVEL DURING THE CRUCIALTIME OF BREEDING. THE SEASONAL …