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Universidad y ciencia
versão impressa ISSN 0186-2979
Resumo
ARZOLA-GONZALEZ, Juan Francisco; VOLTOLINA, Domenico; GUTIERREZ-RUBIO, Yecenia e FLORES-CAMPANA, Luis Miguel. Abundance and size structure of Nerita funiculata (Mollusca: Gastropoda: Neritidae) in the intertidal zone of the Navachiste Bay islands, Sinaloa, Mexico. Universidad y ciencia [online]. 2013, vol.29, n.2, pp.209-213. ISSN 0186-2979.
The annual mean density and the weight and size distribution of the gastropod Nerita funiculata were recorded for six islands of Navachiste Bay (Sinaloa, Mexico). The densities were greater in San Lucas and La Huitussera (28.3 ± 1.8 and 26.8 ± 2.2 ind m−2) than in La Mapachera (11.0 ± 2.4 ind m−2). The mean total length (TL) was greater in Guasayeye (16.61 ± 2.36 mm) and lower values were recorded in San Lucas and Tesobiate (14.67 ± 2.06 and 14.66 ± 2.36 mm). The monthly mean TL varied between 13.95 ± 1.87 and 13.96 ± 2.44 (Tesobiate and San Lucas) and 18.85 ± 1.98 mm (Guasayeye). The relationship between TL and TW (total weight in grams): TW = 0.0014 TL2.518, indicated a negative allometric growth.
Palavras-chave : Abundance; size distribution; growth; Nerita funiculate.