Annals of the South African Museum, Volume 52The Museum, 1969 - Natural history |
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Page 18
... Temperature Tolerance of Tuna Much work in the field of temperature tolerance of tuna , especially T. alalunga , has been done off the Californian coast . As long ago as 1917 Thompson ( 1917 , 1919 ) suggested that small changes in ...
... Temperature Tolerance of Tuna Much work in the field of temperature tolerance of tuna , especially T. alalunga , has been done off the Californian coast . As long ago as 1917 Thompson ( 1917 , 1919 ) suggested that small changes in ...
Page 20
... temperature is shown in the histogram in figure 5 . T. alalunga As shown above , T. alalunga off the Californian coast has a normal tempera- ture range of 14.4 ° -20 ° C . In other areas , however , slightly different tempera- tures may ...
... temperature is shown in the histogram in figure 5 . T. alalunga As shown above , T. alalunga off the Californian coast has a normal tempera- ture range of 14.4 ° -20 ° C . In other areas , however , slightly different tempera- tures may ...
Page 21
... temperature range of 12-25 ° C . In False Bay , Cape Town , this species is only found in water above 20 ° C . T. albacares More observations on the temperature requirements of this species have been made than for most other species ...
... temperature range of 12-25 ° C . In False Bay , Cape Town , this species is only found in water above 20 ° C . T. albacares More observations on the temperature requirements of this species have been made than for most other species ...
Contents
THE TUNAS OF THE GENUS THUNNUS IN SOUTH AFRICAN | 3 |
Calappa | 8 |
Distribution and migrations | 14 |
Copyright | |
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Achaeus adult Agulhas Agulhas Current alalunga albacares animals antennal Antidorcas Arari dolphins assemblage Atlantic Atlantide dolphin axial Barnard bones Cape Town capensis carapace carapace length carpus cartilage caudal chela clasper coast comparative dactyl Decapoda distal dolphin dorsal Durban Durban dolphin ecdysis Elandsfontein Family females Fish fossil Fraser frontalis G PED genus groove haughtoni Hendey Holotype horn cores Indian Ocean intermoult periods lalandii lateral lirae lobes M₁ maccoyii males mandible margin material Melkbos miraletus moulted n.sp obesus ocellifera outer lip ovig pereiopods Pleistocene pleopod posterior present species range recorded Redunca region ribs ridge rock lobsters rogersi rostrum sculpture segment shell skull Slangkop slightly snout South African Museum specimens spermatophoric spines spinules Station BRU Stenella SUID-AFRIKAANSE MUSEUM surface Swartklip Syncerus TABLE teeth temperature Thunnus tooth Transgression complex transverse tubercles tuna valve ventral vertebrae whorl width Zool ZOOLOGICAL NOMENCLATURE