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CHROMOSOMAL CHARACTERS OF THE INDONESIAN SAND GOBY, OXYELEOTRISMARMORATA BLKR. 1874 (ELEOTRIDAE)*) MASAGCA, JIMMY T.
BIOTROPIA No. 7 (1994)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (104.876 KB) | DOI: 10.11598/btb.1994.0.7.112

Abstract

Karyomorphological investigation of sand goby or marble sleeper (Oxyeleotris marmorata Blkr.) from Cirata Reservoir, West Java, Indonesia was undertaken to determine the modal chromosome number and fundamental number, and to construct the karyotype from somatic metaphase cells of head kidney. A total of 30 fish samples from Cirata Reservoir was sacrificed for direct chromosome preparation by colchicine-citrate-aceto-methanol-Giemsa staining-air drying technique. Chromosome set analysis showed that the modal chromosome number of the test fish is 2n = 46, confirming previous studies. Fundamental number is 50. Two karyotypic formulas were found, i.e. 1) 2n = 46 (4SM + 42A); and 2) 2n = 46 (2M + 2SM + 42A). Key Words: Freshwater fishes, Chromosome analysis, Oxyeleotris marmorata, Indonesia
CHROMOSOMES OF THE PHILLIPINE SNAKE-HEAD GUDGEON, OPHIELEOTRIS APOROS (ELEOTRIDAE) FROM LAKE TAAL, LUZ ON ISLAND. Masagca, Jimmy T.; Ordonez, Jose A.
BIOTROPIA Vol. 14 No. 1 (2007): BIOTROPIA Vol. 14 No. 1 June 2007
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (657.001 KB) | DOI: 10.11598/btb.2007.14.1.20

Abstract

Metaphase chromosomes analyzed from the anterior kidneys of Ophieleotris aporos obtained from Lake Taal in Luzon Island, Philippines revealed that the diploid chromosome number was 2n=46. The fundamental number (FN) is 48 (2 submetacentric and 44 acrocentric chromosmes) was known. There was no distinguishable hetemorphic pair of chromosomes in the Giemsa-banded metaphase spreads. This is an initial report on the chromosome set of O. aporos in the this country.