Genetic Determination of the Uniqueness of Holyrood Pond Cod and Hake Populations
Observations by local residents in concert with recent preliminary work on resident fishes suggest the possibility of distinct populations within Holyrood Pond, Newfoundland. Holyrood Pond is a largely landlocked fjord measuring 22 by 1.5 km with depths up to 100 metres. Although the pond is landlocked for most of the year, it is opened to the ocean for short periods annually either by storm events or by human intervention. The pond is therefore saltwater and supports saltwater fishes, but physical isolation through most of the year, combined with substantial freshwater inflow while isolated, creates the potential for unique sub populations. We will examine the effect of isolation on the population structure of Atlantic cod and white hake in Holyrood Pond. From a practical perspective, local residents want to develop a recreational fishery within the pond, but DFO considers Holyrood Pond to be part of a broader management area where cod numbers are very low. Evidence that the population is distinct could change the management assumptions. A second issue is the desire to develop local tourism. The recent discovery of a genetically distinct population of Atlantic cod in Gilbert Bay, Labrador, has lead to increased interest in the region as well as a designation of marine protected area.
01 Jan 2006
31 Dec 2007
Fishing, hunting and trapping
Strategic Research Theme
Oceans, Fisheries and Aquaculture