Length-Weight Relationship, Growth Patterns and Sex Ratio of Dog Conch <i>Strombus Canarium</i> Linnaeus, 1758 in the Waters of Kota Batam

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) where long growth is faster than weight gain, except male Dog conch in Kangkung Bay, has a coefficient (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.

Hubungan Panjang Berat dan Faktor Kondisi Siput Lola (Rochia nilotica) di Perairan Maluku, Sumbawa, dan Bengkulu

“…Nilai-nilai ini menyarankan bahwa berat badan dapat digunakan untuk memperkirakan ukuran dari panjang cangkang. Nilai b kurang dari 3 yang ditunjukkan pola pertumbuhan Rochia nilotica alometrik negatif, yang berarti pertambahan berat badan lebih lambat dari panjang (Pulau Enggano, Sumbawa, dan Morella) (Effendi, 2002;Ramses et al, 2019). Rochia nilotica dari Kepulauan Kei menunjukkan pola pertumbuhan alometrik positif (b > 3), yang berarti pertambahan berat badan lebih cepat dari panjangnya (Effendi, 2002).…”

Effects of Various Lipid Sources and L-Carnitine Supplementation on the Growth Performance, Body Composition, and Antioxidants Enzyme Ability of Dog Conch Larvae, Laevistrombus canarium

“…Laevistrombus canarium (Linnaeus, 1758), known as dog conch, is widely distributed in India, including Andhra Pradesh, Tamil Nadu, and the Andamans [1], and Asian countries including Tailand, Indonesia, Philippines, Vietnam, and Taiwan [2,3]. Dog conch is an economically important species of marine gastropod mollusc in many coastal areas of Southeast Asia [4]. Currently, the supply of L. canarium for human consumption is obtained by fshing in the wild, without aquaculture.…”

Polyculture of Juvenile Dog Conch Laevistrombus canarium Reveals High Potentiality in Integrated Multitrophic Aquaculture (IMTA)

“…L. canarium has a high economic value and is one of the most vital fishery species and staple foods of residents in many coastal areas of Southeast Asia [ 6 ]. Currently, the fishing of L. canarium is still completely dependent on natural replenishment without aquaculture.…”

“…However, in recent years, the number of L. canarium has been declining because of overfishing and environmental damage. Therefore, in many countries, resource surveys and management are underway for L. canarium [ 5 , 6 , 7 , 8 , 9 ]. Because they are increasingly scarce, L. canarium is increasingly valuable.…”

“…The aquaculture of L. canarium is the best approach to preventing its continual overfishing and preserving the natural environment. However, the main food sources of L. canarium are yet to be determined, and suitable techniques for its aquaculture have yet to be developed [ 1 , 2 , 6 ]. In our preliminary studies, we did not observe any active feeding behaviors from L. canarium fed by the artificial feed.…”