- Title
- The distribution and abundance of the endangered Knysna seahorse Hippocampus capensis (Pisces: Syngnathidae) in South African estuaries
- Creator
- Lockyear, Jacqueline F
- Creator
- Hecht, Thomas
- Creator
- Kaiser, Horst
- Creator
- Teske, Peter R
- Subject
- To be catalogued
- Date Issued
- 2006
- Date
- 2006
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/445714
- Identifier
- vital:74416
- Identifier
- https://doi.org/10.2989/16085910609503897
- Description
- The occurrence, distribution and abundance of the endangered Knysna seahorse Hippocampus capensis in 10 estuaries on South Africa's warm temperate south coast, were investigated. Seahorses were found only in the Knysna, Swartvlei and Keurbooms estuaries. Sex ratios were even and, in most cases, more adults were found than juveniles. During the first year of study, seahorse densities were higher in the Swartvlei and Keurbooms estuaries than in the comparatively larger Knysna Estuary but, during the second year, seahorses were absent from the Keurbooms estuary, and the population size in the Swartvlei Estuary had decreased by more than 80%. These results suggest that, although the two smaller estuaries are able to support comparatively high densities of seahorses, population sizes may fluctuate considerably. Population size estimates for the Knysna Estuary were similar to those obtained in a previous study, suggesting that this estuary may represent a more stable environment and may thus be particularly important for the survival and conservation of this species.
- Format
- 9 pages
- Format
- Language
- English
- Relation
- African Journal of Aquatic Science
- Relation
- Lockyear, J.F., Hecht, T., Kaiser, H. and Teske, P.R., 2006. The distribution and abundance of the endangered Knysna seahorse Hippocampus capensis (Pisces: Syngnathidae) in South African estuaries. African Journal of Aquatic Science, 31(2), pp.275-283
- Relation
- African Journal of Aquatic Science volume 31 number 2 275 283 2006 1727-9364
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Taylor and Francis Online Terms and Conditions Statement (https://www.tandfonline.com/terms-and-conditions)
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Teske, Peter R (Prof)
Hecht, Thomas (Prof Emeritus)
Kaiser, Horst (Prof)
RU Department of Ichthyology and Fisheries Science
RU Department of Zoology and Entomology
SDG 14. Life Below Water
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|---|---|---|---|---|---|---|---|
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