INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 8, ISSUE 10, OCTOBER 2019 ISSN 2277-8616 Morphometric Variations Of Terebralia Palustris Linnaeus 1967 In Mangrove Ecosystems Andi Nur Samsi, Sharifuddin Bin Andy Omar, Andi Niartiningsih, Eddy Soekendarsi Abstract: Terebralia palustris is a type of snail that lives in mangrove ecosystems. The mangrove ecosystem which is where it lives is located on Pannikiang Island, Barru Regency, South Sulawesi, Indonesia. This study aims to find information about morphometric variations of these snails. This research uses 2 research stations. Each research station has a 10m x 10m plot and inside it there are 4 small plots with 0.5m x 0.5m size. snail morphometric measurements using a digital caliper with an accuracy of 0.1mm and weighing the snail's weight using a digital scale with an accuracy of 0.01gr. The size parameters for morphometrics include SL (The length of the shell), SW (Shell width), SpH (Spire height), AW (A wide aperture), AL (Aperture length), and W (weight). Data were analyzed by the Paired Sample Test using SPSS version 21. Morphometric measurements (SL, SW, SpH, AL, and AW) on T. palustris showed almost all showed the highest value was in August. The value of W (weight) T. palustris in each month shows the value of W is heavier at station B than at station A, except in September. The parameters SL, SW, SpH, AW, AL, and W at stations A and B all show significance values <0.05, which means the morphometrics of T. palustris at stations A and B are significantly different. In addition, the parameters SL, SW, SpH, AW, and AL at station B are greater than those at station A, except for parameter W. The value of W (weight) is greater at station A than at station B. Keywords: Terebralia palustris, Ecosystem, Pannikiang. —————————— —————————— 1 INTRODUCTION Each research station is placed a large plot of 10m x 10m Mangrove forests are the forests with the greatest productivity and in it there are four plots of 0.25 m2 (0.5 m x 0.5 m) is in the world [1]. Mangroves are inhabited by a variety of biota placed at random. All T. palustris specimens in the plot were [2], [3]. One group of animals that live in mangrove taken (if> 50% of the body of the snail is included in the plot, ecosystems is Gastropoda. Mangrove gastropods play an then classified in the observation plot) [9], [10]. Sampling is important role in ecosystems as benthic deposit feeders [4]. done at low tide.Morphometric Measurements of T. palustris Terebralia palustris as a type of gastropod that lives in the Snails Morphometric measurements namely the length of the mangrove ecosystem. T. palustris eats leaf litter [5]. T. shell measured from the anterior end to the posterior end palustris has a length of about 12 cm and the longest can using a digital caliper with the accuracy of 0.1 mm and reach 19 cm in abundance in muddy mangroves [6]. The legs weighed using a digital scale with an accuracy of 0.01 gr. are dark brown, the snout and cephalic tentacles are black, the head is muscular and the legs are large [7]. These snails are found abundantly on Pannikiang Island, Barru Regency, South Sulawesi [8]. This snail is also consumed by residents on this island. This encourages morphometric observation of these snails which can later be used in the management of these snails. In addition, research on morphometrics of T. palustris does not yet exist. 2 MATERIAL AND METHOD The Study Area This research was conducted on the mangrove ecosystem on Pannikiang Island, Barru Regency, South Sulawesi for four months (August to November 2018). The coordinate points at station A are 4˚20'23 "S and 119'36'11" E while at station B are 4˚21'37 "S and 119'35'42" E. This research uses 2 stations (A and B), Station A is in the north of the island and Station B is in the south of the island. Fig. 1 Dimensions of T. palustris snail size ___________________ Shell dimension dimensions [11], [12]: Andi Nur Samsi is a students doctorals, Agricultural Science Study Program, Graduate School, Hasanuddin University, a. The length of the shell (SL), Makassar, Indonesia. b. Spire height (SpH), Sharifuddin Bin Andy Omar and Andi Niartiningsih as a lecturer c. Shell width (SW), at Faculty of Fisheries and Marine Science, Hasanuddin d. Aperture length (AL), and University, Makassar, Indonesia e. A wide aperture (AW). Eddy Soekendarsi as a lecturer af Faculty of Mathematic and Natural Sciences, Hasanuddin University, Makassar, Indonesia Data Analysis Corresponding Author: Faculty of Fisheries and Marine Data were analyzed by Paired Sample Test using SPSS Science, Hasanuddin University, Makassar, Indonesia version 21 software. Email:[email protected] The Sampling 3787 IJSTR©2019 www.ijstr.org INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 8, ISSUE 10, OCTOBER 2019 ISSN 2277-8616 3 RESULT AND DISCUSSION Morphometric Variations per MonthMorphometric measurements of T. palustris on Pannikiang Island were carried out from August to November 2018. Fig. 2 Comparison of morphometric measurements (SL, SW, SpH, AL, and AW) on T. palustris In general, the results of morphometric measurements (SL, The value of W (weight) T. palustris in each month shows the SW, SpH, AL, and AW) on T. palustris showed that almost value of W is heavier at station B than at station A, except in all of them showed the highest value in August (Fig. 2). September (Fig. 3). In September, the W value at station A was greater than that at station B, where the average value of T. T.ustustris at station A was 39.61 ± 1.93gr and station B was 36.22 ± 1.47gr. This is caused by factors that are not examined such as the availability of feed, the period of egg- laying preparation, and so forth. Abiotic factors that influence such as water quality, water depth, currents, water turbulence, and wave exposure [13]. If you pay attention to Fig. 3, the value in August is a bit striking. This can be seen in the large value of W. The lowest value of W is found in station A d in August and the highest value of W is in station B in August as well. This difference shows a significant difference between populations due to genetic, biotic and abiotic factors [14]. Comparison of Morphometric Variations of Each StationMorphometric variations which include SL (The length of the shell), SW (Shell width), SpH (Spire height), AW (A wide aperture), AL (Aperture length), and W (weight) of each research station are then analyzed Paired Sample Test with Fig. 3 Comparison of the value of W (weight) T. palustris at the following results: stations A and B. Table 1. Comparison of Paired Sample Test values at the two research stations Mean Std. Deviation Std. Error Mean Sig. (2-tailed) Pair 1 SLa - SLb -2,64718 21,88006 1,10794 ,017 Pair 2 SWa - SWb -1,55385 9,12453 ,46204 ,001 Pair 3 SpHa - SpHb -2,27282 13,00913 ,65874 ,001 Pair 4 AWa - AWb -1,91154 9,80547 ,49652 ,000 Pair 5 ALa - ALb -1,54615 9,14950 ,46330 ,001 Pair 6 Wa - Wb -9,54246 28,12990 1,42441 ,000 Paired Sample Test results show a significance value shows significantly different where the mean value of SL below 0.05 so that it shows that the morphometric station B (90.84 ± 0.62 mm) is longer than that of station parameters include SL (The length of the shell), SW A (88.20 ± 0.95 mm). Pair 2 (SWa and SWb) showed (Shell width), SpH (Spire height), AW (A wide aperture), significantly different where the average value of SW AL (Aperture length), and W (weight) at stations A and B station B (35.90 ± 0.30 mm) was longer than that of are significantly different (Table 1). Pair 1 (SLa and SLb) station A (34.35 ± 0.42 mm). Pair 3 (SpHa and SpHb) 3788 IJSTR©2019 www.ijstr.org INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 8, ISSUE 10, OCTOBER 2019 ISSN 2277-8616 showed significantly different values where the mean resources of the Western Central Pacific. Volume 1. value of SpH at station B (52.20 ± 0.40 mm) was longer Seaweeds, corals, bivalves and gastropods. Rome: FAO, when compared to station A (49.93 ± 0.55 mm). Pair 4 1998. (AWa and AWb) shows significantly different values [7] R. S. Houbrick, ―Systematic review and functional where the average AW value at station B (18.06 ± 0.47 morphology of the mangrove snails Terebralia and mm) is longer than that of station A (16.15 ± 0.26 mm). Telescopium (Potamididae: Prosobranchia),‖ Pair 5 (ALa and ALb) showed significantly different Malacologia, vol. 33, no. 1–2, pp. 289–338, 1991. values where the average value of AL at station B [8] A. N. Samsi, ―Derajat kemiripan ekosistem mangrove (34.70 ± 0.27 mm) was longer than at station A (33.16 ± alami dan hasil rehabilitasi,‖ Celeb. Biodiversitas, vol. I, 0.43 mm. Pair 6 (Wa and Wb) show significantly no. 1, pp. 11–16, 2017. different values where the average value of W at station [9] G. Penha-lopes, S. Bouillon, P. Mangion, and A. Macia, A (34.43 ± 1.12 gr) is heavier than at station B (43.97 ± ―Estuarine , Coastal and Shelf Science Population 0.70 gr). At Telescopium telescopium in West structure , density and food sources of Terebralia Halmahera, North Maluku, differences in length and palustris ( Potamididae : Gastropoda ) in a low intertidal weight were also found at the two research stations [15].