Skip to main content

The biology of Barbus mattozi Guimaraes (Teleostei: Cyprinidae) in a Zimbabwean reservoir 4: Reproduction

Buy Article:

$55.00 plus tax (Refund Policy)

Spawning of Barbus mattozi in the Mtsheleli Dam, Zimbabwe, is highly seasonal and timed to take place with the first floods. In December 1974, the Mtsheleli River flooded after heavy rain and the entire adult population of B. mattozi migrated upstream to spawn during a 24h period. Spawning took place in the late morning and early afternoon with 73% of females having spent gonads by the evening. No further spawning occurred, even though the river flooded periodically over the next few months. The sex ratio of fish captured during the December spawning run was 62 males:38 females, although almost all large fish (>15cm FL) were females. Both sexes reached sexual maturity at about 13cm FL and females carried about 7 000–120 000 eggs in their ovaries (logn = −3.13 + 3.49logFL, r = 0.94, P < 0.01), depending on length. The December spawning apparently failed, as no juveniles were collected in 1975, possibly because larvae were swept into the impoundment, where they could not survive. It followed an earlier failure during the 1972–1973 drought, when the river failed to flow, and highlights the risks faced by potamodromous fish in semiarid environments.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: BARBUS MATTOZI; CYPRINIDAE; FECUNDITY; REPRODUCTION; SPAWNING; ZIMBABWE

Document Type: Research Article

Publication date: 2005-08-01

More about this publication?
  • Co-Published by NISC and Taylor & Francis - Subscriber access available here
  • 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
X
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