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Full-Text Articles in Aquaculture and Fisheries
Collaborative Research: Determinants Of Male Reproductive Success In Natural Spawns, Philip O. Yund, Paul Rawson
Collaborative Research: Determinants Of Male Reproductive Success In Natural Spawns, Philip O. Yund, Paul Rawson
University of Maine Office of Research Administration: Grant Reports
This proposal is an extension of previous work aimed at understanding the effects of reproductive biology on patterns of life history evolution in a colonial marine tunicate, Botryllus schlosseri. The project will test five hypotheses about factors that may determine male reproductive success in natural spawns of this colonial invertebrate. The five hypotheses specifically aim to explore the effects of timing of sperm release, relatedness of mates, population density, and allocation to male function on fertilization success in field and experimental populations of Botryllus.
Previous work has shown that there is a narrow temporal window in which fertilization can result …
Molecular Systematics Of A Rapidly Evolving Species Flock: The Mbuna (Cichlidae) Of Lake Malawi, Irving L. Kornfield
Molecular Systematics Of A Rapidly Evolving Species Flock: The Mbuna (Cichlidae) Of Lake Malawi, Irving L. Kornfield
University of Maine Office of Research Administration: Grant Reports
Kornfield Irv Kornfield of the University of Maine will employ hypervariable microsatellite markers to study the systematics and phylogeny of the mbuna , a large group of cichlid fishes of Lake Malawi, East Africa, that have obligate ties to shallow, rocky habitats. Mbuna represent a highly speciose assemblage known for rapid and extensive diversification over a short periods of time. Mbuna thus represent an ideal model system in which to examine processes (e.g., habitat fragmentation, trophic and spatial niche shifts, interspecific agonistic interaction, and sexual selection) that are associated with speciation and adaptive radiation. Kornfield will use microsatellite markers to …