scholarly journals Monobromoisophakellin, a New Bromopyrrole Alkaloid from the Caribbean Sponge Agelas sp.

2002 ◽  
Vol 57 (1-2) ◽  
pp. 153-156 ◽  
Author(s):  
Michael Assmann ◽  
Matthias Köck
Keyword(s):  
Detailed Analysis ◽  
Reef Fish ◽  
Chemical Constituents ◽  
Spectroscopic Methods ◽  
Antifeedant Activity ◽  
Thalassoma Bifasciatum ◽  
Caribbean Reef ◽  
The Caribbean ◽  
Brominated Compounds

A detailed analysis of the chemical constituents of a Caribbean specimen of Agelas sp. was carried out. Four brominated compounds (1-4) were isolated and one of them was identified as a new bromopyrrole metabolite, monobromoisophakellin (1). The structure of 1 was determined using spectroscopic methods. All compounds were tested for their antifeedant activity against the Caribbean reef fish Thalassoma bifasciatum in an aquarium assay.

scholarly journals A New Bromotyrosine Alkaloid from the Caribbean Sponge Aiolochroia crassa

1998 ◽  
Vol 53 (5-6) ◽  
pp. 398-401 ◽  
Author(s):  
Michael Assmann ◽  
Victor Wray ◽  
Rob W. M. van Soest ◽  
Peter Proksch
Keyword(s):  
Detailed Analysis ◽  
Chemical Constituents ◽  
Spectral Studies ◽  
Chemotaxonomic Markers ◽  
The Caribbean

Abstract A detailed analysis of the chemical constituents of a Caribbean specimen of Aiolochroia crassa was performed. Five brominated products (1 -5) were isolated and one of these was a new bromotyrosine metabolite. The structure of the new compound 1 has been established from spectral studies. Compounds 1 and 2, which are the major brominated metabolites and have not been previously identified in any Aiolochroia species, could be usefully employed as chemotaxonomic markers.

Association between juvenile reef fish and the Caribbean reef squid Sepioteuthis sepioidea on north-eastern Brazilian coastal reefs

2007 ◽  
Vol 87 (3) ◽  
pp. 761-762 ◽  
Author(s):  
José de Anchieta C.C. Nunes ◽  
Laís de C.T. Chaves ◽  
Rodrigo Maia-Nogueira ◽  
Cláudio L.S. Sampaio
Keyword(s):  
Reef Fish ◽  
Fish Species ◽  
Juvenile Fish ◽  
First Record ◽  
Squid Species ◽  
Caribbean Reef ◽  
North Eastern ◽  
Reef Fish Species ◽  
Juvenile Reef Fish ◽  
The Caribbean

This article reports on four different juvenile reef fish species, Polydactylus virginicus, Haemulon aurolineatum, H. steindachneri and Carangoides bartholomaei swimming along with schools of the caribbean reef squid Sepioteuthis sepioidea. Three different behaviours were observed. This is the first record of this squid species on Brazilian reef habitats. We suggest that this behaviour is mainly related to protection for juvenile fish against potential pelagic predators.

scholarly journals CONTRIBUTE TO STUDY ON CHEMICAL CONSTITUENTS OF URENA LOBATA (L.) OF VIETNAM

2019 ◽  
Vol 57 (2) ◽  
pp. 162
Author(s):  
Quan Minh Pham ◽  
Hoai Van Thi Tran ◽  
Lam Tien Do ◽  
Phuong Lan Doan ◽  
Inh Thi Cam ◽  
...  
Keyword(s):  
Mental Disorders ◽  
Ethyl Acetate ◽  
Ethyl Acetate Extract ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Spectroscopic Methods ◽  
Tree Roots ◽  
Chemical Structures ◽  
Phytochemical Investigation ◽  
First Time

Urena lobata L. is used in Vietnamese traditional medicine for the treatment of several diseases. Tree roots are used to treat rheumatism, dysentery, poor digestion, flu, tonsils, malaria, asthma, goiter. Flowers are used to treat chickenpox, fever, and mental disorders. Branches, leaves or whole trees used to treat injuries bruises, rheumatism, mastitis, bites. Phytochemical investigation of the n-hexan and ethyl acetate extract of Urena lobata L. led to the isolation of β-sitosterol (1), β-sitosterol-3-O-β-D-glucopyranoside (2), a-acetylamino-phenylpropyl a-benzoylamino-phenylpropanoate (3), quercetin (4), and trans-tiliroside (5). Their chemical structures were determined by spectroscopic methods including MS, 1D, 2D NMR and comparing with those reported in previous papers. Two compounds 3, 5 were isolated for the first time from Urena lobata plant.

scholarly journals Fatal Septicemia Caused by the Zoonotic BacteriumStreptococcus iniaeDuring an Outbreak in Caribbean Reef Fish

2013 ◽  
Vol 51 (5) ◽  
pp. 1035-1041 ◽  
Author(s):  
N. D. Keirstead ◽  
J. W. Brake ◽  
M. J. Griffin ◽  
I. Halliday-Simmonds ◽  
M. A. Thrall ◽  
...  
Keyword(s):  
Reef Fish ◽  
Caribbean Reef ◽  
Fatal Septicemia

scholarly journals Late Cenozoic turnover in the Caribbean reef coral fauna

1992 ◽  
Vol 6 ◽  
pp. 43-43
Author(s):  
Ann F. Budd ◽  
Thomas A. Stemann ◽  
Kenneth G. Johnson
Keyword(s):  
Shallow Water ◽  
Reef Coral ◽  
Early Pleistocene ◽  
Time Interval ◽  
Late Pliocene ◽  
Early Pliocene ◽  
Coral Fauna ◽  
Caribbean Reef ◽  
The Caribbean ◽  
Faunal Distribution

Study of the stratigraphic ranges of reef coral species in scattered sequences (Dominican Republic, Bahamas, Costa Rica, Jamaica, and Florida) suggests that a major episode of faunal turnover occurred in the Caribbean region between early Pliocene and mid Pleistocene time. In a data set composed of all reef corals except the families Mussidae and Oculinidae and the genera Cladocora and Madracis, approximately 90% of the Mio-Pliocene fauna, composed of as many as 65–70 species, became extinct during this time interval. Ten of 27 genera became extinct. Despite the high numbers of extinctions, the total number of species in the Caribbean reef coral fauna dropped only slightly over the time interval, due to similar numbers of originations and extinctions in the fauna. With one possible exception, new species arose in surviving genera, and no new genera formed.Although similar numbers of species became extinct within early Pliocene, late Pliocene, and early Pleistocene time units, shallow water communities experienced higher numbers of extinctions during the late Miocene and early Pliocene. Deeper water communities experienced higher numbers of extinctions during the late Pliocene and early Pleistocene. Species surviving the turnover episode occur in deeper water communities and belong predominantly to the family Agariciidae. Nearshore grass flat communities contain the highest number of early extinctions. No difference in extinction patterns could be detected between taxa which reproduce primarily by fragmentation and those that reproduce primarily by larval recruitment. Although originations appear evenly distributed among community types, a large number occur in Florida along the northern margin of faunal distribution.The increased extinctions in shallow water communities and increased originations in the north suggest that turnover occurred primarily in response to change in abiotic factors such as temperature and siltation, and not in response to species-area effects associated with sea level change.

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