Boleophthalmus

About: Boleophthalmus is a research topic. Over the lifetime, 41 publications have been published within this topic receiving 808 citations.

Changes in lactate content in the gills of the mudskippers Periophthalmus chrysospilos and Boleophthalmus boddaerti in response to environmental hypoxia

Abstract: The gills of Periophthalmus chrysospilos exhibited significantly greater pyruvate kinase and lactate dehydrogenase activities than those of Boleophthalmus boddaerti (P <001) Under the control normoxic condition, the branchial lactate content of the former mudskipper was also significantly greater (P < 001) than that of the latter After hypoxic exposure, lactate and alanine accumulated in the gills of P chrysospilos but not B boddaerti Succinate and propionate were not detected in the gills of these two mudskippers under the control and hypoxic conditions

A new species of mudskipper, boleophthalmus poti (teleostei: gobiidae: oxudercinae) from the gulf of papua, papua new guinea, and a key to the genus

Abstract: Boleophthalmus poti, new species, is described from the Gulf of Papua, Papua New Guinea. It is distinguished from its congeners by a combination of characters, including: un-notched, fl attened and horizontally disposed dentary teeth; pelvic-disc length ~10% of SL; D1 base length ~15% of SL; D2 base length ~40% of SL; ~5 interdorsal scale rows; ~110 lateral-scale rows; and the shape and colour pattern of the fi rst and second dorsal fi ns.

Toxicity of Mercuri to Mudskipper, Boleophthalmus dentatus (Cuv. and Val.). Part 1: Changes in the Activity of ATPases in Gills

Abstract: The present paper deals with the toxicity of mercuric chloride on gill ATPases in the mudskipper, Boleophthalmus dentatus. Fishes were exposed to four sublethal concentrations of mercuric chloride for three durations. The activity of total, Na+, K+; Ca2+; Mg2+; Ca2+; HCO3−; Mg2+, HCO3−-ATPases was estimated. Results showed inhibition of almost all the enzymes in all concentrations for all durations of exposure. The inhibition increased with increasing HgCl2 concentrations as well as exposure durations. This inhibition probably blocked the transport of substances across the membrane by active transport and brought a total failure of the osmoregulatory mechanism in gills.

Morphological comparison of the feeding apparatus in herbivorous, omnivorous and carnivorous mudskippers (Gobiidae: Oxudercinae)

Abstract: Oxudercine gobies show not only a full spectrum of habitat transition from water to land, but also varying feeding habits from herbivory to carnivory. In this study, we compared the anatomy of the feeding apparatus of five oxudercine gobies, Boleophthalmus boddarti (moderately terrestrial, herbivorous), Oxuderces nexipinnis (nearly aquatic, herbivorous), Scartelaos histophorus (moderately terrestrial, omnivorous), Periophthalmus chrysospilos (highly terrestrial, carnivorous), and Periophthalmodon schlosseri (highly terrestrial, carnivorous), collected from a mudflat in Vietnam. B. boddarti and O. nexipinnis are characterized by a horizontal disposition of the dentary teeth, more densely spaced gill rakers on the posterior row of the third arch and both rows of the fourth arch, and large, ventrally curved pharyngeal plates bearing numerous fine teeth. Ps. chrysospilos and Pn. schlosseri have oral jaw bones with jaw-levers producing a greater biting force, rudimentary gill rakers, and pharyngeal plates studded with robust canine teeth. On the underside of the ventral plates, prominent ridges occur, onto which strong muscles attach. The jaw adductors are larger in these carnivorous mudskippers. S. histophorus shows an anatomical architecture which may be considered intermediate between these herbivorous and carnivorous species. On the basis of currently accepted relationships of oxudercine genera, their feeding habits, and the morphology of the feeding apparatus, we hypothesize that the oxudercine gobies had been adapted to feeding microalgae in shallow water before expanding their niche onto land, and subsequently diverged to more specialized herbivorous (Boleophthalmus) and carnivorous groups (Periophthalmus and Periophthalmodon) feeding in higher intertidal habitats.