Ecology, Environment and Conservation Paper

Vol 26, April Suppl. Issue, 2020; Page No.(54-59)

ECOLOGICAL STUDY OF PRIMITIVE BRACHIOPODS LINGULA SP. IN PROBOLINGGO, EAST JAVA, INDONESIA

Rakmawati and Sucipto Hariyanto

Abstract

The purpose of this study was to describe the morphology and ecology of the primitive Brachiopods Lingulasp. in Probolinggo, Indonesia. The Lingula sp. collected from the intertidal zone of Mayangan Beach,Probolinggo Regency, East Java Province, Indonesia by digging substrate using a shovel in certain holes as deep as 5-20 cm in March 2019 when the beach was at its farthest recede (06.30 - 09.30 am). Sampling was carried out using the perpendicular transect method, by placing three transect lines towards the sea. The specimens obtained were then preserved using 70% alcohol. Identification, analysis, and description of Lingula sp. conducted at the Ecology Laboratory of the Faculty of Science and Technology, UniversitasAirlangga. Analysis of substrate types (substrate components) and substrate content (Nitrogen, Phosphor,and Potassium) was carried out at Institut Teknologi Sepuluh Nopember Surabaya. The result showed that Lingula sp. having a slightly oval eggshell that is shiny green, the pedicle is found in the posterior region. In the interior of the body, Lingula sp. has a distinctive structure called lophophore. The total length of the Lingula sp. range between 40 - 120 mm. The substrate which is the habitat of Lingula sp. is silt smooth silky sand with a composition of 0.13% gravel, 88.44% sand, 11.43% fine grains (silt + clay). Meanwhile, the habitat of Lingula sp. containing 0.644% nitrogen (N), 0.087% phosphor (P), 0.362% potassium (K), with ap H of 8.30 and salinity 5.94%o.

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