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Showing 1 to 20 of 1068 for “"Larval"”.
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Larval dispersal between hydrothermal vent habitats
… significant question in vent ecology. Planktonic larval forms provide a dispersive life stage for many species, but the exact mechanism and controls of dispersal are unknown. A description of larval distribution patterns, for which reliable identification of vent larvae is necessary, is critical …
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Larval dispersal between hydrothermal vent habitats
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1996.
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Utilising microalgal mixotrophy to maximise larval nutrition
… One solution to this issue is to develop a larval hatchery; however, the requirement by larvae for large quantities of live microalgae results in high costs, relative to the value of spat.<br/>In this study, three microalgal species: Tetraselmis suecica, Phaeodactylum tricornutum and …
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Post-larval development in deep-sea echinoderms
The post-larval phase is an essential period in the life history of marine invertebrates; vulnerable to high mortality, it ultimately influences the distribution and abundance of adult populations. The post metamorphic ontogenesis of thirty species of deep-sea echinoderms, belonging to three …
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The Effects of Neuroendocrine Stress on Larval Development
… effect and can permanently alter phenotype. Larval amphibians use a critical window in late larval development wherein activation of the hypothalamic-pituitary-adrenal/interrenal (HPA/I) axis speeds their development, allowing them to metamorphose and escape suboptimal aquatic habitat. …
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Food Habits of Larval Ringed Salamanders, Ambystoma Annulatum
Larval Ambystoma annulatum were collected from two ponds in Stone County, Missouri during 1989-1990 for a food habits study. Larvae fed on a variety of organisms. The major food items consisted of microcrustaceans, nematodes, and dipteran larvae. The diet changed both with development and season. …
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Tertiary marine prosobranchs: larval dispersal and geographic range
… 1978) and others have proposed that extensive larval dispersal allows marine invertebrate species to establish great geographic ranges; several studies along a single margin of an ocean basin have supported this proposal (Shuto, 1975; Hansen, 1978). This study makes use of the fossil record to …
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Distribution of larval fishes in the Winfield Pool, Kanawha River, and direct impacts of commercial navigation traffic on larval fish survival
Distributions of larval fishes in the Winfield Pool, Kanawha River, West Virginia, were determined by sampling two sites with bongo and push nets. Cyprinids, clupeids, and <i>Aplodinotus grunniens</i> dominated collections. Main channel densities were a fraction of the densities along the …
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Biophysical coupling between turbulence, veliger behavior, and larval supply
… and to investigate how that behavior affects larval supply in a turbulent coastal inlet. Gastropod larvae retract their velums and sink rapidly in strong turbulence. Turbulence-induced sinking would be an adaptive behavior if it resulted in increased larval supply and enhanced settlement in …
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The larval development of northern California Porcellanidae (Decapoda, Anomura)
… Of the five species only one has had its larval development described (Pachycheleas rudis). The purpose of the present study is to describe the remaining four species and to provide a key to the species level for the larvae of northern California Porcellanidae.
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Taxonomic studies on adult and larval ascidians from California
… research is to further morphological studies on larval ascidians and to encourage greater reliance on larval structures in ascidian taxonomy. This may necessitate some revisions in current classifications, but it is hoped that such revisions will lead to a better understanding of the group. Some …
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Larval Fish Assemblages of Three Eastern South Dakota Rivers
… Our first objective was to characterize the larval fish assemblage in the lower James River, South Dakota in four disparate hydrological years: pre-flood drought (2003 and 2004), flood (2010), and post-flood drought conditions (2012). We compared diversity across years using a variety of …
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DISPERSAL MECHANISMS OF EMBRYONIC AND LARVAL BURBOT (LOTA LOTA)
… However, allometric growth patterns and larval behavior also plays a significant role in dispersal. The developmental timeline of dispersal mechanisms in burbot (<em>Lota lota</em>) larvae is crucial to understanding where they may settle in the Laurentian Great Lakes. Wild <em>L. …
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Studies on the Immunogenicity of Ascaris Suum Larval Antigens
Made available in DSpace on 2014-12-12T01:27:34Z (GMT). No. of bitstreams: 1 7212185.pdf: 3991155 bytes, checksum: 782ce1f25c9b4d0fd450537c66d031f3 (MD5) Previous issue date: 1971
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Serologic Diagnosis of Trichinosis With a Purified Larval Antigen
Made available in DSpace on 2014-12-11T21:33:46Z (GMT). No. of bitstreams: 1 7317498.pdf: 3957770 bytes, checksum: 073a02eda55961c4374de9fd459dd5fa (MD5) Previous issue date: 1973
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Transcriptional profiling of Drosophila larval ventral nervous system hemilineages
… the gene expression between immature and mature larval neurons revealed that mature neurons express many genes not expressed in immature neurons, such as neuropeptide signaling genes and many neurotransmitter and ion channel genes associated with mature neuron function. Birth order also appears …
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