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 19 of 19 for “"reef fishes"”.
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Behavioral ecology of coral reef fishes at spawning aggregation sites
Coral reef fishes aggregate to spawn on certain locations of reefs. This thesis is an extensive investigation of the behavioral and ecological relations between spawning reef fishes, predators and their environment at a spawning aggregation site. Many hypotheses have been proposed regarding the …
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Behavioral ecology of coral reef fishes at spawning aggregation sites
Thesis (Ph. D.)--Joint Program in Biological Oceanography (Massachusetts Institute of Technology, Dept. of Biology; and the Woods Hole Oceanographic Institution), 1998.
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Movement of Selected Nearshore Temperate Reef Fishes Along California's Central Coast
… fish species, especially the Sebastes genus (rockfishes). Movement behavior of temperate reef-fishes plays an important role in the level of protection that a reserve will afford a species. Consistent small-scale movements (<10 km) and limited home range sizes decrease the likelihood that …
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The demography of Red Sea reef fishes since the Last Glacial Maximum
Coral reefs are at increasing risk of climate-induced mass bleaching events and mass mortality, yet we do not know how coral reef fish species respond to habitat loss on temporal and spatial scales relevant to climate change. The Red Sea represents an ideal model system to address this given that …
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Geography, coloration and speciation in a genus of neotropical reef fishes (Gobiidae: Elacatinus)
… The most species-rich genus of Neotropical reef fishes is Elacatinus (Gobiidae), with 27 species. I examine potential mechanisms underlying this richness through analyses of three genetic markers to investigate genetic and ecological differentiation between closely related taxa and among …
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Cryptobenthic Coral Reef Fishes: Resolving Critical Gaps in Species Delimitation, Sampling Techniques, and Phylogenetic relationships
Cryptobenthic reef fishes (CRF) are the smallest vertebrates on coral reefs but represent about 40% of the fish species and about 50% of fish abundance in coral reef ecosystems. Their diversity can be explained by their extremely limited dispersal abilities and short generation times (promoting …
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The Genomics of Divergence and Adaptation in Sister Reef Fishes Separated by the Isthmus of Panamá
… and resilience across two distinct lineages of reef fish: the Pomacentridae and Serranidae. Firstly, I explored in-depth the molecular basis of adaptation in the visual system to the contrasting visual environments of the Tropical Eastern Pacific (TEP) and Caribbean. I compiled de novo …
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Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
… including mangroves, seagrass beds and coral reefs, is coming under increasing pressure from human activities. Many coral reef fish species are thought to use mangroves and seagrass beds as juvenile nurseries before migrating to coral reefs as adults. Identifying essential habitats and …
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Population genetics and systematics of a species-rich clade of Neotropical reef fishes, the tubeblenny genus Acanthemblemaria
Neotropical coral reef fish communities are species-poor compared to those of the Indo-West Pacific. An exception to that pattern is the blenny clade Chaenopsidae, one of only three coral reef fish families endemic to the Neotropics. Within the chaenopsids, the genus Acanthemblemaria is the most …
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Functional connectivity of coral reef fishes in a tropical seascape assessed by compound-specific stable isotope analyses
… including mangroves, seagrass beds and coral reefs, is coming under increasing pressure from human activities. Many coral reef fish species are thought to use mangroves and seagrass beds as juvenile nurseries before migrating to coral reefs as adults. Identifying essential habitats and …
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Peixes recifais brasileiros: diversidade e endemismo
… the ichthyofauna that inhabits Brazilian shallow reefs are established. Related ecological and historical factors are presented and discussed. Diversity is estimated based on a criticai review of recent contributions to the taxonomy of Brazilian reef fishes. These contributions are typified by a …
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Phylogenetics and Phylogeography of Moray Eels (Muraenidae)
… Moray eels are apex predators on coral reefs around the world, but they are not well studied because of their cryptic habitats and occasionally aggressive behaviors. I provide the first molecular phylogeny of moray eels with widespread taxonomic and geographic coverage, including 44 …
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Causes and possible consequences of hybridisation in angelfishes at Christmas Island
The angelfishes (family Pomacanthidae) have the greatest proportion (~30%) of hybridising species, compared to other families of reef fishes, with 26 species implicated in hybridisation. However, very little is known about hybridisation in angelfish, especially in terms of fitness of the hybrids …
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Effects of fishing on a coral reef fish assemblage in Northeastern Brazil
Reef fisheries are important activities that support the livelihoods of millions of people. Reef fisheries exploit different habitats and typically target a diversity of species caught with a matching diversity of fishing gears. However, previous studies of reef fisheries have generally lacked …
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Effects of habitat characteristics on cryptic fish assemblages
… structure is known to influence the abundance of fishes on temperate reefs. Biotic interactions play a major role in determining the distribution and abundance of species. The significance of these forces in affecting the abundance of fishes may hinge on the presence of organisms that either …
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The biological effects of artificial reefs in Smith Mountain Lake, Virginia
Artificial reefs were installed in Smith Mountain Lake, Virginia, during the summer and fall of 1973 to evaluate the biological effects on the aquatic ecosystem. Virtually all sport fishes were attracted to the reef areas. The frequency of sport fish on the reefs generally coincided with their …
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Ecological evaluation of coral reef resources at Kahaluʻu Bay, Hawaiʻi
… of this research were to: assess coral reef resources (coral and fish communities) present at Kahalu´u Bay, Hawai´i; and integrate scientific ecological observations with Traditional Environmental Knowledge (TEK) and cultural practices. This localized assessment is the first to date at …