Morphology of the feeding apparatus in the herbivorous mudskipper, Boleophthalmus pectinirostris (Linnaeus, 1758)

Tran, Loi X.; Maekawa, Yu; Soyano, Kiyoshi; Ishimatsu, Atsushi

doi:10.1007/s00435-020-00476-3

Cited by 9 publications

(3 citation statements)

References 41 publications

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“…Tissues overlying the heart has been removed. The comb‐like structure in the top left is the gill rakers of the 4th branchial arch (see Tran et al, 2020). A, atrium; BA, bulbus arteriosus; DC, ductus Cuvieri; HV, hepatic vein; IJV, inferior jugular vein; V, ventricle; VA, ventral aorta.…”

Section: Resultsmentioning

confidence: 99%

“…Tissues overlying the heart has been removed. The comb-like structure in the top left is the gill rakers of the 4th branchial arch (see Tran et al, 2020 Periophthalmodon. Both the number of filaments and lamellar density are within the ranges known for other teleosts (Hughes & Morgan, 1973).…”

Section: Vascular Specialization Of Boleophthalmus Pectinirostrismentioning

confidence: 99%

“…Boleophthalmus pectinirostris inhabits coastal areas of the East China Sea (southern Japan, Korea, and mainland China; Parenti & Jaafar, 2017), and Malay Peninsula (Chen et al, 2014). In the Ariake Sea, Japan, B. pectinirostris emerge onto an exposed mudflat surface during low tide in the warm months from March to November (Koga, 1993) for feeding (Tran et al, 2020; Yang et al, 2003), territorial defense, courtship and breeding (Washio et al, 1993). The fish appears to remain inside its burrow during high tide in these months.…”

Section: Introductionmentioning

confidence: 99%

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Morphology of the respiratory vasculature of the mudskipper Boleophthalmus pectinirostris (Gobiidae: Oxudercinae)

Kurita

Noma

Ishimatsu

2021

Journal of Morphology

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The gross morphology of the circulatory system in the amphibious mudskipper, Boleophthalmus pectinirostris, conforms with the typical teleost configuration, in which gills and systemic vascular beds are connected in series. However, at the microscopic level, the vasculatures of the respiratory organs, the inner epithelium of the bucco‐opercular cavity, gills and skin, all show specializations for aerial gas exchange. The epithelium of the bucco‐opercular cavity is heavily vascularized by respiratory capillaries that are derived from systemic arteries of the head, mainly branches of the hyomandibular artery and the dorsal opercular artery. The respiratory circuit of the secondary lamellae of the gills consists of 15–17 channels running in parallel, unlike the lacuna‐like blood space of aquatic fishes. The most notable specialization is found in the microcirculation of the respiratory papillae in the skin. Each respiratory papilla is supplied by an arteriole that is derived from a systemic artery, mainly the cranial artery in the head and the segmental artery in the trunk. The arteriole divides several times along its course to the apical region of a papilla, where the branches split into approximately 65 capillaries that radiate to the periphery of the papilla. The capillaries twist 5–10 times before they unite to form the venules that encircle maximally half the circumference of a papilla. A variable number of venules merge into a vein, which progressively coalesces with veins from other papillae. There is no morphological specialization that separates oxygen‐rich effluent blood of the epithelia of the bucco‐opercular cavity and the respiratory papillae of the skin from the oxygen‐poor systemic venous blood. The ecophysiological implications of these findings are discussed in relation to the environmental conditions that B. pectinirostris experience during tidal cycles in the warm months and during overwintering.

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Section: Resultsmentioning

confidence: 99%

Section: Vascular Specialization Of Boleophthalmus Pectinirostrismentioning

confidence: 99%