Breeding season, spawning time, and description of spawning behaviour in the Japanese ornate dragonet, Callionymus ornatipinnis: a preliminary field study at the northern limit of its range

Awata, Satoshi; Kimura, Masafumi; Sato, Noriyosi; Sakai, Keita; Abe, Takuzo; Munehara, Hiroyuki

doi:10.1007/s10228-009-0116-z

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…Dragonets are also known to be highly social; however, their interactions and displays have only occasionally been investigated and mostly only in intraspecific terms (see Awata et al., 2010; Harrington, 1997; Zaiser & Fricke, 1985). In a detailed behaviour study, Harrington (1997) found that a spotted dragonet, Diplogrammus pauciradiarus (sometimes Chalinops pauciradiatus (Gill 1865)) used dorsal fin display in male–male contests, and in male–female signalling including courtship, but did not signal to two common sympatric goby species, despite the gobies displaying fins to the dragonets.…”

Section: Discussionmentioning

confidence: 99%

“…Adult dragonets, and the males especially, are vulnerable to predators as a function of morphology and heightened activity during the breeding season and both sexes are vulnerable during vertical spawning ascents (e.g. Awata et al., 2010; Fricke & Zaiser, 1982). Several dragonet species have spectacular colouring and ornate fin extensions perhaps most notably in the form of hyperdeveloped dorsal sails (Fricke, 1982; Fricke et al., 2014; Harrington, 1997; Swainston, 2010; Thresher, 1984).…”

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Responses of Gross's stinkfish, Callionymus grossi (Ogilby 1910) to perceived threats

Ebner

2024

Austral Ecology

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Predator avoidance is critical to fish survival and yet multiple types of predator response are rarely recorded at the level of individuals let alone studied in detail. Behaviour of an individual adult male dragonet, Gross's stinkfish Callionymus grossi (Ogilby 1910) (Family Callionymidae) was observed over the course of four consecutive daily snorkelling sessions on high tides in the Maroochy River estuary, Queensland, Australia. On two occasions, the dragonet buried in the sand in the presence of a great barracuda, Sphyraena barracuda, whereas, smaller benthic predators or competitors and the observer sometimes provoked dorsal fin raising and fleeing responses of the dragonet. The dragonet, therefore, demonstrates multiple responses to potential predators and competitors seemingly depending on the likely severity of interaction. Further research of dragonet fishes is recommended to disentangle the functionality of fin display in this group, with the anti‐predator function of fin displays and honest signalling of chemical defence a promising aspect for investigation.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Responses of Gross's stinkfish, Callionymus grossi (Ogilby 1910) to perceived threats

Ebner

2024

Austral Ecology

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“…Dragonets are gonochoristic batch spawners (Breder & Rosen 1966), and fertilization is external in 3 studied species, Callionymus maculatus Rafines que, 1810, C. ornatipinnis Regan, 1905, andBathycallionymus kaianus (Günther, 1880) (Johnson 1973, Ikejima & Shimizu 1999, Awata et al 2010. It is most likely similar in C. filamentosus.…”

Section: Discussionmentioning

confidence: 99%

Biology of a new xenoma-forming gonadotropic microsporidium in the invasive blotchfin dragonet Callionymus filamentosus

Diamant

Rothman²,

Goren³

et al. 2014

Dis. Aquat. Org.

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A gonadotropic microsporidian parasite, Obruspora papernae gen. et sp. nov. (Microsporidia: Enterocytozoonidae), is described from Callionymus filamentosus (Teleostei: Callionymidae) in the Mediterranean Sea. The host, a Red Sea invasive species which entered the Mediterranean through the Suez Canal, was first collected in the Levant Basin in 1953, whereas its parasite went unobserved until 2008. Analysis of partial small subunit ribosomal gene sequences (SSU rDNA) placed the new species within the Nucleospora, Desmozoon, and Paranucleospora clade, and as it differs from each of them, it is assigned to a new genus. The development of the parasite is described, and the biological mechanisms underlying this parasite−host system are analyzed. Prevalence of infection approached 80% in female samples throughout most of the year. Males showed no signs of infection, but parasite rDNA was detected in male internal organs. The parasite-induced xenomas progressively occupied and eventually replaced much of the ovary, in some cases producing effective castration. Despite high levels of parasite infection, current trawl fishery statistics indicate that the abundance of Mediterranean populations of the host remains high. The parasite impact on the host population dynamics is unclear. Possible effects of the new microsporidian parasite on the reproductive effort of C. filamentosus and the potential role of another parasite, the ectoparasitic copepod Lernanthropus callionymicola, as an additional host in the life cycle of O. papernae, require further investigation.

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Mating system in a small pelagic spawner: field case study of the mandarinfish, Synchiropus splendidus

Mitcheson

Rasotto

2022

Environ Biol Fish

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Mating systems in fishes are extremely diverse, ranging from monogamy to multiple polygamous forms, some of which include alternative male mating tactics within species. The major reproductive mode across approximately 33,000 bony fishes is pelagic-spawning with external fertilization. Despite the dominance of this mode, it is relatively little studied in the field because the greater mobility of larger species typically makes individuals difficult to follow for extensive periods, or to catch and mark. However, smaller, more sedentary pelagic spawners provide excellent opportunities to examine mating system variability in response to environmental conditions. The mandarinfish, Synchiropus splendidus, is a small sedentary pelagic spawner which is accessible to divers. Its complex body markings are distinctive and variable allowing individuals to be identified and followed repeatedly without the need for capturing and marking fish. In over 400 h of underwater surveys, we recorded movements, inter- and intra-sexual behaviors, sex ratios, and the timing and duration of spawning activity of focal fish in predetermined study areas. We concluded that the mandarinfish has a polygamous mating system with pair-spawning. Females are sequentially polyandrous, spawning once nightly or not at all, while males are polygynous, spawning up to 8 times a night. Males and females use loosely defined spawning sites on a daily basis and show flexibility in their tactics through differential movements according to dispersion of individuals, distances between spawning sites and temporally limited daily female receptivity. These results reveal the mandarinfish to be an excellent model species for studying small pelagic spawners in the field.

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Breeding season, spawning time, and description of spawning behaviour in the Japanese ornate dragonet, Callionymus ornatipinnis: a preliminary field study at the northern limit of its range

Cited by 4 publications

References 29 publications

Responses of Gross's stinkfish, Callionymus grossi (Ogilby 1910) to perceived threats

Responses of Gross's stinkfish, Callionymus grossi (Ogilby 1910) to perceived threats

Biology of a new xenoma-forming gonadotropic microsporidium in the invasive blotchfin dragonet Callionymus filamentosus

Mating system in a small pelagic spawner: field case study of the mandarinfish, Synchiropus splendidus

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