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Articles 31 - 35 of 35
Full-Text Articles in Aquaculture and Fisheries
Corallivorous Reef Fishes As Potential Vectors Of Coral Disease Based On A Study Of Dietary Preferences, Tanya Rogers
Corallivorous Reef Fishes As Potential Vectors Of Coral Disease Based On A Study Of Dietary Preferences, Tanya Rogers
Independent Study Project (ISP) Collection
The prevalence of coral disease appears to be increasing worldwide, although little is known about how these diseases are transmitted between coral colonies. To examine whether corallivorous fishes could potentially act as disease vectors, this study examined whether and which fish species feed on diseased coral, and whether these fishes actively target diseased coral sections. Branches of Acropora muricata with brown band disease were filmed in the field, and bites taken by fishes on different sections of the coral (live tissue, tissue margin, disease band, dead skeleton, and algae) were recorded. For each fish species, electivity indices were calculated for …
Prey Selectivity Of Planktivorous Fish: Analysis Of Stomach Contents In Four Pomacentrids At Lizard Island, Great Barrier Reef, James O'Hare
Prey Selectivity Of Planktivorous Fish: Analysis Of Stomach Contents In Four Pomacentrids At Lizard Island, Great Barrier Reef, James O'Hare
Independent Study Project (ISP) Collection
Coral reef planktivores are important to coral reefs by concentrating and delivering nutrients and allochthonous carbon from the plankton to reef building corals. In an otherwise very oligotrophic system this function may be of major importance. Planktivorous Damselfish (Pomicentridae) were analysed for prey selectivity through enumeration of stomach contents. Simultaneous plankton tows were conducted to establish the plankton community composition of the waters they were taken from. There was a statistically significant variation between the stomach composition and that of the water column. While there was not a significant difference among Simpson’s diversity indices of the stomach contents, there was …
A Survey Of The Cockle A. Antiquata, Chumbe Island, Kelsey Jacobsen, Lisl Esherick
A Survey Of The Cockle A. Antiquata, Chumbe Island, Kelsey Jacobsen, Lisl Esherick
Independent Study Project (ISP) Collection
A survey of the cockle Anadara antiquata’s population was performed on the intertidal zone of Chumbe, a small island located off of Zanzibar, Tanzania. Cockle abundance and size were measured along transects laid parallel to shore at four sites, two sites on the west side and two on the east. The marine and intertidal environments on the western side of the island are protected under Chumbe Island Coral Park (CHICOP), a privately managed Marine Protected Area (MPA). However, small-scale artisanal fisheries including cockle collection by women still occur on the unprotected east side. This study will attempt to evaluate the …
Sea Urchin Predation In Misali Island Marine Park, Nicole Esclamado
Sea Urchin Predation In Misali Island Marine Park, Nicole Esclamado
Independent Study Project (ISP) Collection
The populations of sea urchins and their main predators, triggerfish (Balistidae), wrasses (Labridae) and emperors (Lethrinidae), were studied in the extractive and non-extractive zones of the Misali Island Marine Conservation Area in order to (1) evaluate the applicability of a sea urchin-sea urchin predator model developed in Kenya’s fringing reefs, (2) gain baseline data on Misali’s coral reef, and (3) evaluate the recovery status of the protected zone. This study revealed the predictive power of the sea urchin-sea urchin predator model for the reef ecosystem of Misali Island. As expected, a decline in sea urchin predators as a gross trophic …
Assessment Of The Artisanal Shark Fishery And Local Shark Fin Trade On Unguja Island, Zanzibar, Deborah Schaeffer
Assessment Of The Artisanal Shark Fishery And Local Shark Fin Trade On Unguja Island, Zanzibar, Deborah Schaeffer
Independent Study Project (ISP) Collection
This study investigates the current state of the directed artisanal shark fishery off Unguja Island, Zanzibar, with a focus on the East Asian shark fin trade and its impact on the utilization of this valuable marine resource. The study concentrates on the two fish markets in Stone Town: Malindi and Darajani. Large fish are brought to these markets both from nearby waters and from other coastal towns on the island. Data was gathered through observation of the type and number of sharks landed, fishing practices employed, and sale of shark products, particularly fins. Local fin traders and exporters were interviewed …