Sexual Dimorphism in Morphometric Characteristics of Korean Chub Zacco koreanus (Pisces, Cyprinidae)

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

“…Research on sexual dimorphism of fish from other families, as reported by Kim et al (2008), has found out that in Korean Chub (Zacco koreanus) from Cyprinidae family, out of 37 morphometric characters, there are 12 morphometric characters that are significantly different between male and female fish. The most distinctive morphometric characters (P <0.001) in Korean Chub or Zacco koreanus is the pectoral fin length (PECL) and the distance between the dorsal fin insertion and insertion of the anal fin (IDF-IAF) (Kim et al 2008).…”

“…Research on sexual dimorphism of fish from other families, as reported by Kim et al (2008), has found out that in Korean Chub (Zacco koreanus) from Cyprinidae family, out of 37 morphometric characters, there are 12 morphometric characters that are significantly different between male and female fish. The most distinctive morphometric characters (P <0.001) in Korean Chub or Zacco koreanus is the pectoral fin length (PECL) and the distance between the dorsal fin insertion and insertion of the anal fin (IDF-IAF) (Kim et al 2008). Ulicevic et al (2018) on European perch fish (Perca fluviatilis) from Cyprinidae family has obtained 7 out of 19 morphometric characters as discriminators for male and female fish, namely, head length, periorbital distance, predorsal distance of first dorsal fin, predorsal distance of second dorsal distance, first dorsal fin height, second dorsal fin height, and pectoral fin length.…”

“…Sexual dimorphism can be determined using morphometric methods. Detailed examination of morphometric methods is carried out based on morphometric characters or parts of aquatic organism morphological characters, in both the size and shape, by measuring distances of particular external body parts quantitatively (Kim et al 2008;Maurya et al 2018). Determination of sexual dimorphism, especially sex differentiation based on morphometric characters, has been done with fairly accurate results, for example, determination of sexual dimorphism on red chick barb or Puntius orphoides (Suryaningsih et al 2014), European perch or Perca fluviatilis (Ulicevic et al 2018), and pink skunk clownfish or Amphiprion perideraion (Abol-Munafi et al 2011).…”

“…Understanding on sexual dimorphism is very important and some findings conveyed by sexual dimorphism can give many valuable information, such as the process of receiving signals (Taborsky 1998), social structure and B I O D I V E R S I T A S 20 (4): 1133-1139, April 2019 1134 adaptation (Kim et al 2008), change strategies (Shaurabh et al 2013), rationalization of fishery catch in public waters (Suryaningsih et al 2014), and choice in parent fish for breeding (Esmaeili et al 2017), mate and intrasexual competition (Taborsky 1998). This study aims to determine the sexual dimorphism of M. singaringan based on morphometric characters.…”

Enteromius thespesios (Teleostei: Cyprinidae): a new minnow species with a remarkable sexual dimorphism from the south‐eastern part of the Upper Congo River

“…Patterns of sexual shape dimorphism (SSD) have historically received considerably less attention than sexual size differences (Berns, ). Nevertheless, SSD in fin‐size seems to be a quite widespread and diverse phenomenon in cyprinids with paired fins longer, more rounded and expansive in males of many species of Pseudobarbus (Skelton, ); all fins enlarged, but particularly the dorsal and the anal fin, in males of Cyprinella leedsi (Fowler 1942) (Rabito & Heins, ); longer dorsal, pelvic, anal and caudal fins in males of Puntius titteya Deraniyagala 1929 (Mieno & Karino, ); longer pectoral fins in males of Nipponocypris koreanus (Kim, Oh & Hosoya 2005) (Kim et al ., ); longer pelvic fins in males of Chondrostoma olisiponensis (Gante, Santos & Alves 2007) (Gante et al ., ), Opsarius barna (Hamilton 1822) (Tilak et al ., ) and Gila atraria (Girard 1856) (Belk et al ., ); with a longer anal fin in females of Cyprinion semiplotus (McClelland 1839) (Bagra et al ., ). However, though the function of SSD as observed in most of those species, as well as in E. thespesios , remains unclear, in a few cases these sex‐related differences in fin size have been linked to reproductive behavioural differences between the sexes such as male courtship display, male–male competition or male burrow digging (Mieno & Karino, ; Raagam & Devi, ; Tilak et al ., ).…”