VARIASI CANGKANG GASTROPODA EKOSISTEM MAI\GROVE CILACAP SEBAGAI ALTERNATIF SUMBER PEMBELAJARAN MOLUSKA; GASTROPODA

KARYANTO, PUGUH and MARIDI, and INDROWATI, METI (2004) VARIASI CANGKANG GASTROPODA EKOSISTEM MAI\GROVE CILACAP SEBAGAI ALTERNATIF SUMBER PEMBELAJARAN MOLUSKA; GASTROPODA. BIOEDUKASI, 1 (1). pp. 1-6. ISSN 1693-265X

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    Abstract

    The aim of this research was to identify some characters of mangrove gastropod's shell, which varied atnong species and modified from its basic structure. Some characters are often lost or added make some dfficulties for the student to identify the characters. Those characters are also confusing and lead to miss- identification respectively. From that case, studying the vaiation of the shell characters among species and its modificationfrom the original structure of gastropod's shell is needed. A model antl clescriptioi iTtne shell and its characters is useful guide for identification and also as an alternative teaching matiriat for studying the gastropod. Mangrove gastropod's specimens from previous research (Xqry@19_9LSl, 2003) are the mateials studied on; represent the numerous variation and modification of gastropod's shell. The basic structures are itlenlified according to Robert et al (1952), Pechenik (tggt) and Beeslqv et al (tggS). Variation and modification whether reduction or ac{ditionfrom its original were then mentioned antl schemed. The shells of the 9 families of gastropod show some specific features, which respective to the shell structure offanily, thas the identification to thefamily can be carried out by using the shelt;haracters offamity. Some characters that legd to the genera and species are more various and sophishcate. Axial ridges, triisversal ridges, eroded apex, elongated siphonal canal, spine, thickened aperture, ih" pr"r"n"" of the-apterture teeth, thickening operculwm witk calcareous material and coloratio, ore io*" variant that obtaiied. Those characters reJlect modification and play some important notes while stuclying the shell. Key words: Mangrove gastropotls, shell variation, alternative learning resources

    Item Type: Article
    Subjects: L Education > L Education (General)
    Divisions: Fakultas Keguruan dan Ilmu Pendidikan > Pendidikan Biologi
    Depositing User: Anis Fagustina
    Date Deposited: 14 Apr 2014 23:05
    Last Modified: 14 Apr 2014 23:05
    URI: https://eprints.uns.ac.id/id/eprint/10923

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