Skip to main content

Free Content Feeding Ecology of Lanternfish (Pisces: Myctophidae) Larvae: Prey Preferences as a Reflection of Morphology

Download Article:
(PDF 1520.271484375 kb)
Larvae of 14 species of lanternfishes (Myctophidae) were examined to determine diet preference by taxa, size, and time. Feeding incidence was calculated from measures of gut fullness. Diet comparisons were based on the volume of prey consumed. All prey were measured along two dimensions and volume of prey was estimated from known morphology of items. The Bray-Curtis index of diet similarity resulted in six clusters, three of which were composed of a single species. The largest cluster of six species included members from the narrow-eyed subfamily Myctophinae. All species in this cluster exhibited a strong preference for ostracod prey with 84.4–96.6% (by volume) of their diet consisting of these prey. A second cluster included members of the genus Diaphus and three other species. These larvae preferred a diet of the various developmental stages of copepods. Two species, Lobianchia gemellarii (Cocco, 1838) and Hygophum taaningi Becker, 1965, formed a third cluster based upon their preference for gelatinous zooplankton. The three single species clusters included larvae with a variety of prey preferences. Hygophum benoiti (Cocco, 1838), in addition to calanoid copepods, ingested a relatively high percentage of protists. The diet of Lampanyctus alatus Goode and Bean, 1896 included prey from three broad categories: calanoid copepods, ostracods, and larvaceans. Larvae of Ceratoscopelus townsendi (Eigenmann and Eigenmann, 1889) also ingested a wide range of crustacean prey, but almost 20% of the diet consisted of thaliacean prey. Most larvae were diurnal predators, exhibiting relatively high feeding incidence from dawn to dusk with peak feeding between 1000 and 1500 hrs. One species, Myctophum selenops TÃ¥ning, 1928, continued to feed regardless of light availability. Prey size preferences were related to mouth size. The largest size range of prey was ingested by larvae with the largest jaw, and the smallest prey by larvae with the smallest jaw. Jaw length only affected the upper range of prey size; larger larvae also ingested a variety of smaller items.

61 References.

No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2004-11-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more