Reproductive biology of Echinometra lucunter (Echinodermata: Echinoidea) in a northeast Brazilian sandstone reef
نویسندگان
چکیده
منابع مشابه
Reproductive biology of Paracentrotus lividus (Echinodermata: Echinoidea) in two contrasting habitats of northernTunisia (south-east Mediterranean)
The reproductive strategies of the sea urchin, Paracentrotus lividus, was studied in the Bay of Tunis. Samples were collected monthly, from September 1993 to August 1995, in two sites which differ in their marine vegetation and their exposure to wave action. Histological examination demonstrated a cycle of gametogenesis with six reproductive stages and a main breeding period occurring between A...
متن کاملCHRONIC TOXICITY TEST WITH SEA URCHIN Echinometra lucunter AND Lytechinus variegatus (ECHINODERMATA: ECHINOIDEA), EXPOSED TO LIGHT-STICK - FLAG PATERNOSTER USED FOR LONGLINE SURFACE FISHING
In this work, the chronic toxicity of a mixture of light-stick chemicals and water was tested. The light-stick is used in fishery activities to catch swordfish. The tubes were collected on the beaches of the Costa dos Coqueiros BA, Brazil, in the period from 14th to 31st July 2007. The method used was a short chronic toxicity test where embryos of the sea urchins Echinometra lucunter and Lytech...
متن کاملRichness and Distribution of Epibenthic Molluscs on a Sandstone Reef in the Northeast of Brazil
1 Universidade Federal do Rio Grande do Norte (UFRN), Departamento de Botânica, Ecologia e Zoologia (DBEZ), Laboratório do Oceano. Campus Universitário-Lagoa Nova, s/n, BR 101-Natal/RN –59072 970. 2 Universidade Federal do Rio Grande do Norte (UFRN), Centro de Biociências, Departamento de Oceanografia e Limnologia (DOL), Laboratório de Biologia Pesqueira. Via Costeira, s/n, Mãe Luiza-Natal/RN 5...
متن کاملSpatial distribution of epibenthic molluscs on a sandstone reef in the Northeast of Brazil.
The present study investigated the distribution and abundance of epibenthic molluscs and their feeding habits associated to substrate features (coverage and rugosity) in a sandstone reef system in the Northeast of Brazil. Rugosity, low coral cover and high coverage of zoanthids and fleshy alga were the variables that influenced a low richness and high abundance of a few molluscan species in the...
متن کاملEchinometrin: A novel mast cell degranulating peptide from the coelomic liquid of Echinometra lucunter sea urchin
Echinometra lucunter is an abundant sea urchin found in Brazilian waters. Accidents caused by this animal are common and are characterized by the penetration of the spines in the skin, which raises an inflammatory reaction through mechanical trauma as well as by the presumable action of toxins. Additionally, there have been reports of inflammatory reaction after the consumption of raw sea urchi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Anais da Academia Brasileira de Ciências
سال: 2009
ISSN: 0001-3765
DOI: 10.1590/s0001-37652009000100007