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oa African Zoology - Larval development of Spondyliosoma emarginatum (euvier & Valenciennes) (Pisces: Sparidae) from southern Africa

Volume 24, Issue 3
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X

 

Abstract

The larval development of the southern African endemic sparid Spondyliosoma emarginatum is descriptionbed and illustrated from specimens collected in Algoa Bay and the Swartkops, Sundays and Swartvlei estuaries of the Cape Province. S. emarginatum has demersal eggs. Preflexion larvae are moderately elongate (BD = 18-23% BL) with body depth increasing to 31 % BL in postflexion stages. The head is rounded and the snout blunt but becomes more elongate in postflexion stages. There are short spines on the preoperculum. Flexion occurs at about 6 mm BL and postflexion larvae are characterized by distinct medio-Iateral pigmentation. Osteological development is descriptionbed from a series of cleared and stained specimens. All fins have the adult complement of spines and rays by 12 mm BL. The larvae of S. emarginatum are compared with those of the European S. canthurus and other southern African sparids.

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/content/afzoo/24/3/AJA00445096_467
1989-07-01
2019-09-21

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