Diet of two Antarctic dragonfish (Pisces: Bathydraconidae) from the Indian sector of the Southern Ocean

Pakhomov, E.A. (1998) Diet of two Antarctic dragonfish (Pisces: Bathydraconidae) from the Indian sector of the Southern Ocean. Antarctic Science, 10 (1). pp. 55-61. ISSN 0954-1020

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Official URL: http://dx.doi.org/10.1017/S095410209800008X

Abstract

The diet of Cygnodraco mawsoni Waite 1916 and Gymnodraco acuticeps Boulenger 1902 (Pisces: Bathydraconidae) was studied in the Cooperation and Cosmonaut seas in the depth range 200–400 m during the summer 1988. Stomach content analysis showed that both species are piscivorous predators but with different feeding habits. Cygnodraco mawsoni fed mostly on young notothenioid fish, regularly complementing these with pelagic, Euphausia superba, and benthic crustaceans, such as amphipod gammarids and mysids. In contrast, G. acuticeps relied mostly on mesopelagic fish of the family Myctophidae. Although C. mawsoni and G. acuticeps occupy similar depths in the Cosmonaut Sea, different feeding habits appear to limit the probability of interspecific competition for food.

Item Type:Article
Uncontrolled Keywords:Antarctica; Bathydraconidae; diet; feeding ecology; feeding preference; niche separation; pelagic fish; piscivory; Cygnodraco mawsoni; Euphausia superba; Gymnodraco acuticeps; Southern ocean; Indian Ocean sector
Subjects:Y Unknown > Subjects to be assigned
Divisions:Research Institutes and Units > Southern Ocean Group
Faculty > Faculty of Science > Zoology & Entomology
ID Code:718
Deposited By:INVALID USER
Deposited On:29 Jun 2007
Last Modified:06 Jan 2012 16:18
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