Variation in Mating Behaviors Between a Tropical and a Temperate Species of Medaka Fishes

Sumarto, Bayu K. A.; Nofrianto, Andy B.; Mokodongan, Daniel F.; Lawelle, Sjamsu Alam; Masengi, Kawilarang W. A.; Fujimoto, Shingo; Yamahira, Kazunori

doi:10.2108/zs200114

Cited by 9 publications

(8 citation statements)

References 32 publications

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“…The phylogenetic tree that we used for the genus Oryzias (Fig. 1B) is based on mtDNA analysis (see Materials and Methods for details) and largely agrees with previously reported analysis (Takehana et al, 2005;Sumarto et al, 2020). Species are grouped in three main clades, which correspond to the 'latipes species group', the 'javanicus species group' and the 'celebensis species group' (Takehana et al, 2005).…”

Section: Resultssupporting

confidence: 74%

Diversity of lateral line patterns and neuromast numbers in the genus Oryzias

Seleit

Ansai

Yamahira

et al. 2021

Journal of Experimental Biology

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A remarkable diversity of lateral line patterns exists in adult teleost fishes, the basis of which is largely unknown. By analysing the lateral line patterns and organ numbers in 29 Oryzias species and strains we report a rapid diversification of the lateral line system within this genus. We show a strong dependence of lateral line elaboration (number of neuromasts per cluster, number of parallel lateral lines) on adult species body size irrespective of phylogenetic relationships. In addition, we report that the degree of elaboration of the anterior lateral line, posterior lateral line and caudal neuromast clusters is tightly linked within species, arguing for a globally coordinated mechanism controlling lateral line organ numbers and patterns. We provide evidence for a polygenic control over neuromast numbers and positioning in the genus Oryzias. Our data also indicate that the diversity in lateral lines can arise as a result of differences in patterning both during embryonic development and post-embryonically, where simpler embryonic patterns generate less complex adult patterns and organ numbers, arguing for a linkage between the two processes.

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Section: Resultssupporting

confidence: 74%

Diversity of lateral line patterns and neuromast numbers in the genus Oryzias

Seleit

Ansai

Yamahira

et al. 2021

Journal of Experimental Biology

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“…Although this could be theoretically explained by negative feedback (i.e. rejected males lost interest), that would not be the case in Oryzias , because males of Oryzias will continue courtship behaviours even after being rejected by a female (Fujimoto et al., 2015; Sumarto et al., 2021). We consider that the body coloration of the females also functions as a mating signal to the males.…”

Section: Discussionmentioning

confidence: 99%

“…Mating of Oryzias , including the three Poso species, is conducted by a female and a male (Fujimoto et al., 2015; Iwamatsu, 2006; Sumarto et al., 2021). The male and female are positioned side by side, and the male wraps his dorsal and anal fins around the female, placing the vents of the two individuals in close proximity.…”

Section: Methodsmentioning

confidence: 99%

Resource partitioning is not coupled with assortative mating in sympatrically divergent ricefish in a Wallacean ancient lake

Kakioka

Sutra

Kobayashi

et al. 2021

J of Evolutionary Biology

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Sympatric speciation is considered to be difficult without the coupling between ecological traits that allow resource partitioning and reproductive traits that allow assortative mating. Such “magic traits” are known to be involved in most of the compelling examples of sympatric speciation. In this study, we report a possible case of sympatric speciation without magic traits. Three species of ricefish (genus Oryzias) are suggested to have diverged sympatrically within Lake Poso, an ancient lake in Sulawesi. An analysis of genome‐wide single‐nucleotide polymorphisms showed that these three species are reproductively isolated from each other throughout the lake. Stable isotope analyses revealed that the three species use different food resources, which reflect differences in their feeding morphologies (gill rakers and digestive tracts) and feeding sites. Field and laboratory observations showed that O. nebulosus and O. orthognathus share a mating habitat of cobbles, where they scatter fertilized eggs, whereas this site is never used by O. nigrimas, indicating that assortative mating is partly achieved by spatial isolation. The small, less‐adhesive eggs of O. nebulosus and O. orthognathus probably reflect their adaptation to spawning on cobble beaches. Laboratory mating experiments showed strong prezygotic isolation between O. nebulosus and O. orthognathus, which is achieved by strong species recognition presumably by both sexes based on species‐specific mating dances and nuptial coloration. In summary, the assortative mating of O. nebulosus and O. orthognathus is probably not coupled to resource partitioning. We discussed how sympatric speciation among these species might have been achieved even without magic traits.

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“…Perbedaan warna jantan dan betina juga terlihat pada ikan padi O. asinua, O. wolasi, dan O. woworae (Parenti et al, 2013) sebagai ciri adanya dikromatisme kelamin. Perubahan warna jantan saat kawin juga terlihat pada spesies ikan padi O. soerotoi (Mokodongan et al, 2014), O. dopingdopingensis (Mandagi et al, 2018), dan O. woworae (Firmansyah et al, 2021Sumarto et al, 2021). Spesies Oryzias memiliki dua tipe reproduksi yaitu pelvic brooder dan egg depositer (Gani et al, 2022).…”

Section: Hasil Dan Pembahasanunclassified

Karakteristik Biometrik, Morfologi Telur, dan Habitat Ikan Padi Oryzias javanicus (Beloniformes, Adrianichthyidae) Asal Desa Linduk, Pesisir Teluk Banten

Herjayanto¹,

Syamsunarno²,

Syarif³

et al. 2022

Bioscientist j. ilm. bosbiol.

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Information on the biometric characteristics, egg morphology, and habitat of O. javanicus are very important for its use as model fish in the laboratory, ornamental fish, and environmental bioindicators. Therefore, research is needed to analyze the biometric character, egg morphology, and habitat of ricefish O. javanicus in the brackish water pond of Banten Bay. This research was conducted non-eperimentally by observing biometric characters to examine meristic, morphometric, and sex dimorphism characteristics. Observations of egg morphology were macroscopic and microscopic characteristics. Habitat characteristics were observed by measuring water quality in situ. The results showed that O. javanicus from Linduk had meristic characteristics D.6–7; A.21–22; P.9-10; V.5–6 and sex dimorphism in the shape and size of the dorsal and anal fins. Blue metallic color pattern on the head and yellow color on the fins are potentially ornamental fish. O. javanicus eggs have a diameter of 1.08 ± 0.02 mm, are equipped with attaching filaments and non-attaching. The non-attaching filaments are 0.14 ± 0.03 mm in length. The percentage of yolk area was 73.7 ± 4.85%, and the oil droplet area was 8.3 ± 0.54% of O. javanicus at the gastrula stage with egg yolk volume 0.349 ± 0.048 mm3. Water quality in this study is a reference for rearing O. javanicus in the laboratory.

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Variation in Mating Behaviors Between a Tropical and a Temperate Species of Medaka Fishes

Cited by 9 publications

References 32 publications

Diversity of lateral line patterns and neuromast numbers in the genus Oryzias

Diversity of lateral line patterns and neuromast numbers in the genus Oryzias

Resource partitioning is not coupled with assortative mating in sympatrically divergent ricefish in a Wallacean ancient lake

Karakteristik Biometrik, Morfologi Telur, dan Habitat Ikan Padi Oryzias javanicus (Beloniformes, Adrianichthyidae) Asal Desa Linduk, Pesisir Teluk Banten

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