We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
FOODS OF AGE-0 RIO GRANDE SILVERY MINNOWS (HYBOGNATHUS AMARUS) REARED IN HATCHERY PONDS.
- Authors
Watson, Jacqueline M.; Sykes, Catherine; Bonner, Timothy H.
- Abstract
We examined contents of alimentary canal from pond-reared Rio Grande silvery minnows (Hybognathus amarus; n = 183) to determine frequency of occurrence for foods consumed among small (9-20 mm), medium (21-35 mm), and large fish (36-75 mm). Among 183 fish, 19% (n = 34) of alimentary canals were empty. Of those with food items (n = 149), insects were the most common and were present in 66% of fish, followed by formulated feed (60%), diatoms (40%), cladocerans (36%), rotifers (35%), filamentous algae (32%), bryozoan statoblasts (19%), copepods (11%), protozoa (9%), plant material (9%), ostracods (6%), detritus (5%), and sand (4%). Among size groups, small and medium fish consumed a greater variety of foods than large fish. Information on contents of alimentary canal of pond-reared Rio Grande silvery minnows will aid in refining culture techniques for this federally listed endangered species.
- Subjects
RIO Grande silvery minnow; PONDS; WILDLIFE conservation; ENDANGERED species; ANIMAL species; FISHES
- Publication
Southwestern Naturalist, 2009, Vol 54, Issue 4, p475
- ISSN
0038-4909
- Publication type
Article
- DOI
10.1894/GG-33.1