Abstract
This study aims to analyze the aspect length of weight relationship, growth pattern, and sex ratio of Dog conch. This research was conducted in May-August 2018. The samples were collected from three locations (stations) which became the main of catching the Dog conch in Kota Batam, namely, Jaloh Island, Kangkung Bay, and Terong Island. A total of 377 individuals (162 males and 215 females) S. canarium were collected from three research stations. The value of the length-weight relationship for females, males, dan blended, at the respective station, are Jaloh Island, W=0,000142L 2,924 , R²= 0.555 (female), W=0,00049L 2,610 , R²= 0.566 (male), and W=0,000165L 2,881 , with a value of R²= 0.572 (blanded); Kangkung Bay, W=0,0850L 1,275 , R²= 0.325 (female), 0,00000511L 3,185 , R²= 0.776 (male), and W=0,0384L 1,480 , with R² = 0.374 (blended); As well as Terong Island, W=1,227L 0,746 , R²= 0.180 (female), W=0,00139L 2,385 , R²= 0.714 (male) and W=0,118L 1,305 with R²= 0.355 (blended). The pattern of growth of Dog conch is negative allometric (b 3) has a positive allometric growth pattern, where weight gain is faster than long increments. The sex ratio of Dog conch on Jaloh Island and Terong Island is balanced, while in Kangkung Bay it is not balanced. Overall the sex ratio in the study location is not balanced with a ratio of 1: 1.33 with the expectation frequency (Ei) of 188.8.
Highlights
The importance of mollusk biota for human life including Gastropoda has been started since the past
This study aims to analyze aspects of biology such as the length-weight relationship, the pattern of growth, and sex ratio Dog conch Canarium Strombus in the association of the City of Batam, Riau-Indonesian Islands
Dog conch (Strombus canarium) sampling was conducted in three locations which became the center of catching the Dog conch that is in Jaloh Island, Kangkung Bay and Terong Island, Belakang Padang Districts, Kota Batam
Summary
The importance of mollusk biota for human life including Gastropoda has been started since the past. There are not many known species of bioecological important species, including species of Strombus canarium. (2012) explain the ecology of Strombus canarium is still poorly understood and is largely unexplained. The life of the Dog conch is closely related to the existence of seagrass ecosystems, certain distributions, and preferences in habitats that are not widely known. This is due to the lack of research on this species. The status of the sustainability of the Gonggong snail population in the ecological dimension can be seen from the four measured variables, namely the condition of the waters, substrate, capture technology and size of capture (Khodijah & Anggraini, 2015)
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