Captive propagation, reproductive biology, and early life history of the Diamond Darter (Crystallaria cincotta)

American Midland Naturalist
By: , and 

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Abstract

Reproductive biology and early life history data are critical for the conservation and management of rare fishes. During 2008–2012 a captive propagation study was conducted on the Diamond Darter, Crystallaria cincotta, a rare species with a single extant population in the lower Elk River, West Virginia. Water temperatures during spawning ranged from 11.1–23.3 C. Females and males spawned with quick vibrations, burying eggs in fine sand in relatively swift clean depositional areas. Egg size was 1.8–1.9 mm, and embryos developed within 7 to 11 d. Diamond Darters were 6.7–7.2 mm total length (TL) at hatch. Larvae ranged from 9.0–11.0 mm TL following a 5–10 d period of yolk sac absorption. Larvae had relatively large mouth gapes and teeth and were provided brine shrimp Artemia sp., Ceriodaphnia dubia neonates, marine Brachionus rotifers, and powdered foods (50–400 µm) but did not appear to feed in captivity, except for one observation of larval cannibalization. Larvae survived for a maximum of 10 d. To increase larval survival and reduce the possibility of cannibalism, other alternative food sources are needed during captive propagation.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Captive propagation, reproductive biology, and early life history of the Diamond Darter (Crystallaria cincotta)
Series title American Midland Naturalist
DOI 10.1674/0003-0031-172.1.107
Volume 172
Issue 1
Year Published 2014
Language English
Publisher University of Notre Dame
Contributing office(s) Coop Res Unit Leetown
Description 12 p.
First page 107
Last page 118
Country United States
State Tennessee
Other Geospatial Elk River
Online Only (Y/N) N
Additional Online Files (Y/N) N