Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa
During the period 1898-1906 red romans Chrysoblephus laticeps dominated redfish landings at Strand and Hermanus, Republic of South Africa, ports subject to cool upwelling conditions. Red stumpnoses C. gibbiceps were the main species along the eastern Cape Peninsula and seventy-fours Polysteganus und...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AOSIS
1982-12-01
|
| Series: | Koedoe: African Protected Area Conservation and Science |
| Online Access: | https://koedoe.co.za/index.php/koedoe/article/view/600 |
| _version_ | 1817970894458322944 |
|---|---|
| author | R. J. M Crawford H. B Crous |
| author_facet | R. J. M Crawford H. B Crous |
| author_sort | R. J. M Crawford |
| collection | DOAJ |
| description | During the period 1898-1906 red romans Chrysoblephus laticeps dominated redfish landings at Strand and Hermanus, Republic of South Africa, ports subject to cool upwelling conditions. Red stumpnoses C. gibbiceps were the main species along the eastern Cape Peninsula and seventy-fours Polysteganus undulosus at most harbours east of Cape Agulhas. By the late 1970's romans were dominant between Kalk Bay and Arniston and also important contributors else-where, but seventy-fours were only recorded in any significant quantities from Port Alfred. Interpretation of these trends is complicated by a lumping of catches, but the possibility of an environmental change favouring romans (cooler water) at the expense of seventy-fours (warmer water) cannot be discounted. Other marine forms having a biology associated with cooler waters have also increased along the southern Cape coast in recent years. Redfish resources at Gans Bay and Struts Bay are not currently overexploited, but provide a valuable source of remuneration for local fishermen when preferred target species are absent. Limited data collected in the Tsitsikamma Coastal National Park indicate that dageraad C. cristiceps populations could deteriorate rapidly if subjected to high fishing pressure. The contribution of dageraads to combined redfish landings is currently highest in areas of low exploitation. |
| first_indexed | 2024-04-13T20:39:42Z |
| format | Article |
| id | doaj.art-4c6c063470f1452e8dfab30c6e2c96fc |
| institution | Directory Open Access Journal |
| issn | 0075-6458 2071-0771 |
| language | English |
| last_indexed | 2024-04-13T20:39:42Z |
| publishDate | 1982-12-01 |
| publisher | AOSIS |
| record_format | Article |
| series | Koedoe: African Protected Area Conservation and Science |
| spelling | doaj.art-4c6c063470f1452e8dfab30c6e2c96fc2022-12-22T02:30:55ZengAOSISKoedoe: African Protected Area Conservation and Science0075-64582071-07711982-12-01251133110.4102/koedoe.v25i1.600549Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South AfricaR. J. M Crawford0H. B Crous1Tsitsikamma Coastal National ParkSea Fisheries InstituteDuring the period 1898-1906 red romans Chrysoblephus laticeps dominated redfish landings at Strand and Hermanus, Republic of South Africa, ports subject to cool upwelling conditions. Red stumpnoses C. gibbiceps were the main species along the eastern Cape Peninsula and seventy-fours Polysteganus undulosus at most harbours east of Cape Agulhas. By the late 1970's romans were dominant between Kalk Bay and Arniston and also important contributors else-where, but seventy-fours were only recorded in any significant quantities from Port Alfred. Interpretation of these trends is complicated by a lumping of catches, but the possibility of an environmental change favouring romans (cooler water) at the expense of seventy-fours (warmer water) cannot be discounted. Other marine forms having a biology associated with cooler waters have also increased along the southern Cape coast in recent years. Redfish resources at Gans Bay and Struts Bay are not currently overexploited, but provide a valuable source of remuneration for local fishermen when preferred target species are absent. Limited data collected in the Tsitsikamma Coastal National Park indicate that dageraad C. cristiceps populations could deteriorate rapidly if subjected to high fishing pressure. The contribution of dageraads to combined redfish landings is currently highest in areas of low exploitation.https://koedoe.co.za/index.php/koedoe/article/view/600 |
| spellingShingle | R. J. M Crawford H. B Crous Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa Koedoe: African Protected Area Conservation and Science |
| title | Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa |
| title_full | Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa |
| title_fullStr | Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa |
| title_full_unstemmed | Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa |
| title_short | Trends in commercial handline catches of Redfishes along the Southern Cape Coast, Republic of South Africa |
| title_sort | trends in commercial handline catches of redfishes along the southern cape coast republic of south africa |
| url | https://koedoe.co.za/index.php/koedoe/article/view/600 |
| work_keys_str_mv | AT rjmcrawford trendsincommercialhandlinecatchesofredfishesalongthesoutherncapecoastrepublicofsouthafrica AT hbcrous trendsincommercialhandlinecatchesofredfishesalongthesoutherncapecoastrepublicofsouthafrica |