Feeding and energetics of
Pacific macrourid fishes
Jeff Drazen, Ph.D.
Monterey Bay Aquarium Research Institute
September 20, 2002
12:00 Noon - Pacific Forum
Macrourids (also known as rattails or grenadiers) are very common and
abundant deep-sea fishes. Over 300 species are entirely deep living,
inhabiting depths from 200 to 6000 meters throughout the world’s oceans.
The majority of species are benthopelagic, swimming in the water column
just over the sea floor. Many species are large (~0.5 to 1 meter) and
considering their abundance, macrourids are important apex predators in
the deep-sea environment. Despite their potentially important role, almost
nothing is known of their feeding ecology beyond the basic diet
composition of several species. Their diversity and widespread occurrence
also make them good subjects for examining energetic strategies in the
food-poor deep sea.
The talk will discuss the diet of several species of macrourids and
their role as scavengers in the deep sea. Temporal patterns in feeding and
energetics and an energetic model used to calculate feeding rates and
investigate energetic adaptations will also be presented.
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discharge and its effect on the methane cycle