MudskipperPeriophthalmodon schlosseri can repay oxygen debts in air but not in water

Takeda, Tomoki; Ishimatsu, Atsushi; Oikawa, Shin; Kanda, Takeshi; Hishida, Yasuhiro; Khoo, K. H.

doi:10.1002/(sici)1097-010x(19990801)284:3<265::aid-jez3>3.0.co;2-x

Cited by 29 publications

(20 citation statements)

References 7 publications

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“…Moreover, the aerial environment is presumed to be more suitable for respiration in Pn. schlosseri (Kok et al, 1998;Takeda et al, 1999). The present observations of terrestrial behavior and epidermal morphology suggest that Periophthalmus and Periophthalmodon species have similar abilities to live out of water.…”

Section: Discussionsupporting

confidence: 49%

A study on the epidermal structure of Periophthalmodon and Periophthalmus mudskippers with reference to their terrestrial adaptation

Zhang

Taniguchi

Takita

et al. 2003

Ichthyological Research

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Epidermal structures of three species of Periophthalmus (Ps.) and two species of Periophthalmodon (Pn.) were investigated in relation to their lifestyle. All species of both genera lack a dermal bulge, which species of other two oxudercine genera, Boleophthalmus and Scartelaos, have in their epidermis. In Periophthalmus and Periophthalmodon species, which are highly terrestrial, the middle cells are well developed in the epidermis and the capillaries are distributed in the surface of the epidermis on the head and dorsal body. In Periophthalmus species and Pn. septemradiatus, the capillaries and blood vessels are also distributed in the epidermis of the abdomen, superficially in Ps. modestus and deeply in other species. In Ps. modestus, the capillaries are also densely distributed on the surface of the epidermis in the caudal area, whereas in other species, the epidermal capillaries and blood vessels of this area are located deep with a very low density. In Pn. schlosseri, the epidermal capillaries are not found in either the abdominal area or caudal area. A comparison of the distribution of epidermal capillaries among Boleophthalmus, Periophthalmodon, Periophthalmus, and Scartelaos species revealed that the skin makes a larger contribution to respiration in the species having a more terrestrial lifestyle. Goblet mucous cells are completely lacking in Periophthalmus species, whereas slimelike materials were often found on the skin surface of Periophthalmus species. This finding suggests that Periophthalmus species have some unknown mechanism for producing mucus. In Pn. schlosseri, exposure of the dense capillary net on the surface of the head is likely to increase cutaneous respiration, but it also makes the fish an attractive target of bloodsucking insects.

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Section: Discussionsupporting

confidence: 49%

A study on the epidermal structure of Periophthalmodon and Periophthalmus mudskippers with reference to their terrestrial adaptation

Zhang

Taniguchi

Takita

et al. 2003

Ichthyological Research

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“…In fact, this ability to maintain oxygen uptake in a terrestrial setting is a common feature of amphibious, non-aestivating, fish (e.g. Gordon et al, 1969;Takeda et al, 1999;Ong et al, 2007), and suggests that brown mudfish are well adapted to deal with periods of emersion.…”

Section: Oxygen Consumption Carbon Dioxide Excretion and Other Metamentioning

confidence: 99%

Physiological and biochemical strategies for withstanding emersion in two galaxiid fishes

Urbina

Walsh

Hill

et al. 2014

Comparative Biochemistry and Physiology Part A: Molecular &

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“…For example, the Malaysian mudskipper Periophthalmodon schlosseri (Pallas) has a buccal-branchial cavity volume that is 16% of its body volume (Aguilar et al, 2000), which is much larger than the cavity volume of 2-6% reported in gobies not specialized for amphibious air breathing (Gee and Gee, 1991;Gonzales et al, 2006). The anatomical and physiological specializations of mudskippers enable them to maintain metabolic rates in air that are generally equal to or higher than in water (Graham, 1997;Kok et al, 1998;Takeda et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Mudskippers brood their eggs in air but submerge them for hatching

Ishimatsu

Yoshida

Itoki

et al. 2007

Journal of Experimental Biology

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SUMMARY Intertidal mudflats are highly productive ecosystems that impose severe environmental challenges on their occupants due to tidal oscillations and extreme shifts in habitat conditions. Reproduction on mudflats requires protection of developing eggs from thermal and salinity extremes,O2 shortage, dislodgement by currents, siltation and predation. Mudskippers are air-breathing, amphibious fishes, and one of few vertebrates that reside on mudflats. They lay their eggs in mud burrows containing extremely hypoxic water, raising the question of how the eggs survive. We found that the Japanese mudskipper Periophthalmus modestus deposits its eggs on the walls of an air-filled chamber within its burrow. To ensure adequate O2 for egg development, the burrow-guarding male mudskipper deposits mouthfuls of fresh air into the egg chamber during each low tide, a behaviour that can be upregulated by egg-chamber hypoxia. When egg development is complete the male, on a nocturnal rising tide, removes the egg-chamber air and releases it outside the burrow. This floods the egg chamber and induces egg hatching. Thus, P. modestus has developed a reproductive strategy that allows it to nurture eggs in this severe habitat rather than migrating away from the mudflat. This requires that mudskipper eggs be specialized to develop in air and that the air-breathing capacity of the egg-guarding male be integrated in a complex behavioural repertoire that includes egg guarding, ferrying air to and from the egg chamber, and sensing O2 levels therein, all in concert with the tidal cycle.

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MudskipperPeriophthalmodon schlosseri can repay oxygen debts in air but not in water

Cited by 29 publications

References 7 publications

A study on the epidermal structure of Periophthalmodon and Periophthalmus mudskippers with reference to their terrestrial adaptation

A study on the epidermal structure of Periophthalmodon and Periophthalmus mudskippers with reference to their terrestrial adaptation

Physiological and biochemical strategies for withstanding emersion in two galaxiid fishes

Mudskippers brood their eggs in air but submerge them for hatching

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