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All Journal TREUBIA BERITA BIOLOGI JURNAL BIOLOGI INDONESIA
Soetikno Wirjoatmodjo, Soetikno
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Journal : TREUBIA

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NOTES ON FOOD, GROWTH AND REPRODUCTION OF HOMALOPTERA AMPHISQUAMA TA (WEBER and DE BEAUFORT), (BALlTORIDAE) FROM ALAS RIVER, ACEH, SUMATRA ISLAND Mosse, Jacobus W.; Wirjoatmodjo, Soetikno
TREUBIA Vol 31, No 3 (1999): Vol. 31 No. 3, December 1999
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7105.639 KB) | DOI: 10.14203/treubia.v31i3.610

Abstract

Approximately 253 specimens of freshwater fish Homalopteraamphisguamata (Weber and de Beaufort) were collected during dry and rainy seasons from the upper reached of Alas river, Sumatra island in 1981-1983. Their food, growth and reproduction were studied. Phytoplanktonic algae, especially Bacillariophyceae and small aquatic insects are their food preference. The growth pattern was different between sex, that is allometric for the male and isometric for the female.Relatively, there is no difference of condition factor between sex (0.850 for the male and 0.848 for the female). However, tnevaiues were different between seasons. The mixed value in average was around 0.934 in rainy season and around 0.775 in dry season. Total fecundity highly varied from 63 up to 470 or 93 in average. The bigger size of the fish tended to show higher fecundity value. The percentage number of matured gonads during the rainy season was 8.89-22.55 % and in dry season was 8.21-18.33%. The diameter of matured eggs was around 2.01 mm in average.
ADDITIONAL DESCRIPTIVE DATA FOR THE NEW COELACANTH, Latimeria menadoensis Pouyaud et al. FROM SULAWESI, INDONESIA Wirjoatmodjo, Soetikno; Tjakrawidjaja, Agus H.
TREUBIA Vol 32, No 1 (2002): Vol. 32 No. 1, August 2002
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3622.528 KB) | DOI: 10.14203/treubia.v32i1.593

Abstract

Morphometries and meristies data of Latimeria menadoensis, a new species of Coelacanth from Sulawesi, Indonesia (Pouyaud et al. 1999) are reported. Comparison with data of L. chalumnae as reported by McAllister and Smith (1978) and Forey (1998) are presented. Among the 22 descriptive characters only 41% are different. Some more specimens of L. menadoensis are still needed for more detail study of its morphological differences with L. chalumnae.Keywords: L. menadoensis, description, L. chalumnae, morphometries andmeristies comparison.
FISH FAUNA OF WAY SEKAMPUNG WATERSHED WITH SOME NOTES ON NEW RECORDS FOR SUMATRA Wirjoatmodjo, Soetikno
TREUBIA Vol 31, No 3 (1999): Vol. 31 No. 3, December 1999
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v31i3.613

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THE FRESHWATER FLATFISHES FROM LAMPUNG. SUMATRA. WITH NOTES ON ACHIROIDES LEUCORHYNCHUS BLKR (HETEROSOMATA : SOLEIDAE) Wirjoatmodjo, Soetikno
TREUBIA Vol 29, No 4 (1988): Vol. 29 No. 4, 1988
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/treubia.v29i4.1548

Abstract

An account is given on two species of freshwater flat-fish, Achiroides melanorhynchus (Blkr) and A. leucorhyncus Blkr. The eristing description of the latter species is considered inadequate and is hereby corrected based on twelve specimens collected from Lampung, South Sumatra. It is a new locality record for the species as well.
Co-Authors Agus H. Tjakrawidjaja, Agus H. IKE RACHMATIKA, IKE Ismudi Muchsin Jacobus W. Mosse, Jacobus W. Nasution, Syahroma Husni Nasution, Syahroma Husni Soedharman, Dedi Soedharman, Dedi Syamsiar, Syamsiar