Crecimiento del caracol Strombus gigas (Gastropoda: Strombidae) en cuatro ambientes de Quintana Roo, México / Growth of Strombus gigas (Gastropoda: Strombidae) snail in 4 environments of Quintana Roo, Mexico
Rev. biol. trop
; Rev. biol. trop;49(1): 85-91, Mar. 2001.
Article
em Es
| LILACS
| ID: lil-321784
Biblioteca responsável:
BR1.1
ABSTRACT
The growth rate of queen conch cultured in pens was studied from October 1993 to March 1994. Sixteen pens (50 m2 each, four pens per environment), were set in four environments Thalassia, Thalassia-sand, Sand and Coral within a reef lagoon on Punta Gavilan and Banco Chinchorro. Twenty conchs were introduced in each pen (sizes 100-120, 120-140, 140-160 and 160-180 mm shell length) and measured monthly to the nearest mm. Growth rate was assessed by two methods:
a) shell marginal mean increase and b) the Gulland-Holt method considering all conch within pens. In the first method, the environment Sand had the highest growth (3.21 +/- 0.26 mm/month) at Punta Gavilan, whereas at Banco Chinchorro, highest growth was recorded in Coral (2.31 +/- 0.44 mm/month). Considering the second method, highest asymptotic length conch in Punta Gavilan occurred in Thalassia-sand (287.5 mm), whereas in Banco Chinchorro the highest asymptotic length was measured in Sand (318.1 mm). There were significant differences in growth between sites; juvenile growth is related with habitat quality mainly food availability.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Caramujos
Limite:
Animals
País/Região como assunto:
Mexico
Idioma:
Es
Revista:
Rev. biol. trop
Assunto da revista:
BIOLOGIA
/
MEDICINA TROPICAL
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Costa Rica