Abstract
This study aims to reveal the phenomenon of presence / absence of anomalies in the early development of Mimi-giant mintuno (Tachypleus gigas) during artificial incubation in the vial bottles. Samples 5 eggs are fertilized incorporated into transparent 50 bottles and vials each filled with clear sea water medium. Embryonic stages (instars) hatch, bottles marked, then dumped seawater medium was replaced with 4% formalin solution and glycerin amount of 5% by volume, up to ¾ of the total volume of the vial bottles. Standard stages of giant Mimi-mintuno embryonic normal development Mimi-mintuno according to Itow (1988). The description type of anomalies contained in the post-hatching embryo development. The observations are documented in the form of stereo-microphotograph. The results showed that there are forms anomalies: (a). Delayed development, the structure of the body is not perfect; (b). In observation of the embryo hatches, open shell and egg perivitelline membrane has been opened but delayed development, the structure of the body is not perfect; (c). Embryos after hatched perfectly, abnormalities of morphologic structure such as abnormal protrusion on the dorsal carapace part found. Keywords: Tachypleus gigas, artificially, incubation
Highlights
This study aims to reveal the phenomenon of presence / absence of anomalies in the early development of Mimi-giant mintuno (Tachypleus gigas) during artificial incubation in the vial bottles
The results showed that there are forms anomalies: (a)
Effect of salinity on larval growth of horseshoe crab, Tachypleus gigas (Müller), Current Science, Vol 87, No 2, 25 July 2004
Summary
EMBRYONIC DEVELOPMENTAL ANOMALY IDENTIFICATION OF GIANT MIMIMINTUNO (Tachupleus gigas) DURING ARTIFICIAL INCUBATION PERIOD IN THE VIAL BOTTLES. Penelitian ini bertujuan untuk mengungkap fenomena ada/tidaknya anomali pada perkembangan awal Mimi-mintuno raksasa (Tachypleus gigas) selama inkubasi artifisial (artificial incubation) dalam botol vial. Sampel telur-telur Tachypleus gigas fertil 5 butir dimasukkan ke dalam botol-botol vial transparan 50 botol dan masing-masing diisi dengan media air laut yang jernih. Tahap embrio (instar) menetas, botol-botol diberi tanda, kemudian media air laut dibuang digantikan dengan larutan formalin 4 % dan gliserin sejumlah 5 % volume, hingga mencapai volume total 3⁄4 bagian botol vial. Penelitian mendeskripsikan jenis anomali yang terdapat dalam perkembangan pasca menetas embrio. Cangkang terbuka dan selaput perivitelline telur sudah membuka namun mengalami keterlambatan perkembangan, struktur tubuh belum sempurna; (c). Struktur tubuh ada kelainan morfologik berupa tonjolan tidak normal pada bagian karapaks bagian dorsal
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