Sexual dimorphism in morphometric characters of Mystus singaringan from Klawing River in Central Java, Indonesia: Strategic instruction for conservation development

Abstract

Abstract. Pramono TB, Arfiati D, Widodo MS, Yanuhar U. 2019. Sexual dimorphism in morphometric characters of Mystus singaringan from Klawing River in Central Java, Indonesia: Strategic instruction for conservation development. Biodiversitas 20: 1133-1139. This study aims to determine the sexual dimorphism of Mystus singaringan (Senggaringan fish) based on morphometric characters. The measurement of 24 morphometric characters in 30 M. singaringan from Klawing River was carried out using a digital caliper (0.01 mm). Morphometric data of M. singaringan analyzed using t-test have showed significant difference in 12 morphometric characters between sexes, such as standard length, head height, distance of the tip of the muzzle to eyes, distance of the tip of the muzzle to adipose fin, height of dorsal fin, height of pectoral fin, basic length of adipose fin, height of adipose fin, maximum height, length of first nasal barbel, length of first mandibular barbel, and length of second mandibular barbel. Analysis of growth of morphometric characters shows that there is a linear relationship between all morphometric characters and total length. The type of growth of all morphometric characters in both male and female M. singaringan is negative allometric.

Sexual dimorphism, length-weight relationship, and condition factor of Hampala ampalong (Bleeker, 1852) from Kalong Floodplain, Ogan Komering Ilir Regency

“…These results illustrate that, morphologically, males are smaller than females. The associated research that stated the sexual dimorphism of males was smaller than females has been reported by Bahuguna et al (2010) in the cyprinidae fish Puntius ticto (Hamilton-Buchanan) from Kumaun Himalaya and Pramono et al (2019) in Mystus singaringan from Klawing River in Central Java, Indonesia.…”

Biodiversity of Ichthyofauna In Mainland Waters of Muara Bulian District Jambi Province and Its New Record

“…One of the survival abilities of Bagridae comes from the morphological adaptation to the difference in size between males and females. This difference in size between males and females can explain the adaptive process of intrasexual selection, selecting partners, and reproductive methods [19] This is also because Bagridae is a Carnivorous europhagus feeder, which has broad and varied eating preferences, Bagridae can eat crabs, shrimp, small fish, polychaete, worms, algae, detritus zooplankton, and mud [20] another ability is that Bagridae has 4 pairs of barbels (Maxillarry barbel, Nassal barbel, Outer mandibular barbel, and Inner mandibular barbell) which functions as a location sensor and mechanoreceptor, thereby helping to adapt in muddy environments in deep waters [21], while the Oshphronemidae, can adapt to environmental stress, such as Trichopodus trichopterus which can survive in poor environmental conditions [22].…”