Environmental factors affecting tissue regeneration of the reef--building coral Montastraea annularis (Faviidae) at Los Roques National Park, Venezuela
Rev. biol. trop
;
50(3/4): 1055-1065, sept.-dic. 2002. ilus, tab, graf
Article
Dans Anglais
| LILACS
| ID: lil-350088
ABSTRACT
In this study, the rates of tissue regeneration and recovery from injuries that emulated the bites of either butterfly or parrotfish on colonies of Montastraea annularis exposed to different sedimentation regimesp were determined. Two small reef patches were chosen close to key Dos Mosquises, north of the Venezuclan mainland. Sixteen colonies (8 treatments + a single replicate) were artificially damaged at each patch and their recovery was monitored for three months by photographic means. The lesions were inflicted using two different techniques scratching the polyps with a hard-nylon brush to resemble parrotfish (Scaridae) damages (Lesions Type 1) or jetting out the tissue with a syringe to simulate butterflyfish (Chaetondontidae) bites (Lesions Type 2). The diameter of the wounds ranged from 5 (small lesion) to 8 cm (large lesions) and both kinds were inflicted on the top and bottom of the colonies, with a single replicate for each treatment. The main factors affecting the recovery of the colonies' surface were lesion features (type, position and size), turbidity and chiefly, the sedimentation rate...
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Régénération
/
Plaies et blessures
/
Environnement
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Vénézuela
langue:
Anglais
Texte intégral:
Rev. biol. trop
Thème du journal:
Biologie
/
Médecine tropicale
Année:
2002
Type:
Article
Pays d'affiliation:
Venezuela
Institution/Pays d'affiliation:
Universidad Simón Bolivar Sartenejas/VE
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