| morphological study of the antennal sensilla in gerromorpha (insecta: hemiptera: heteroptera). | the external morphology and distribution of the antennal sensilla of 21 species from five families of semiaquatic bugs (gerromorpha) were examined using scanning electron microscopy. nine main types were distinguished based on their morphological structure: sensilla trichoidea, sensilla chaetica, sensilla leaflike, sensilla campaniformia, sensilla coeloconica, sensilla ampullacea, sensilla basiconica, sensilla placoidea and sensilla bell-mouthed. the specific morphological structure of one type ... | 2017 | 28883684 |
| comparing salinity tolerance in embryonic and larval development of two species of water strider, aquarius paludum and gerris latiabdominis (hemiptera: gerridae). | water strider aquarius paludum (fabricius) is a cosmopolitan species colonizes mainly freshwater but occasionally brackish habitats throughout the palearctic and oriental regions. water strider gerris latiabdominis (miyamoto) is a common species in japan lives in temporary habitats as freshwater paddy fields. these two species often occur syntopically. we investigated differences in the developmental response to brackish water during embryonic and larval stages between the two species. eggs were ... | 2013 | 23955948 |
| cost of oviposition site selection in a water strider aquarius paludum insularis: egg mortality increases with oviposition depth. | females generally avoid selecting sites for oviposition which have a high predation risk to increase offspring survival. previous studies have focused on costs to ovipositing females. however, although offspring may also incur costs by being oviposited at low predation risk sites, no studies have focused on costs to offspring. such costs to offspring were examined by using aquarius paludum insularis, females of which avoid eggs parasitism by ovipositing at deep sites. deep sites are safe from eg ... | 2010 | 20138050 |
| morphology and neurophysiology of tarsal vibration receptors in the water strider aquarius paludum (heteroptera: gerridae). | substrate vibratory information receptors are extensively studied in insects and spiders, however for water surface dwelling species little data is available. we studied the vibration receptive organs in tarsi of the water strider aquarius paludum, using light, transmission and scanning electron microscopes, and recorded the neural activity of the organs in response to vibrational stimuli, which were afterwards analysed with a custom made spike sorting program. we found that the tarsal chordoton ... | 2009 | 19523956 |
| skating and diving: changes in functional morphology of the setal and microtrichial cover during ontogenesis in aquarius paludum fabricius (heteroptera, gerridae). | we examined the morphology of setae and microtrichia in aquarius paludum during larval development using a scanning electron microscope. we then conducted immersion experiments with larvae and adults in oxygenated and deoxygenated water. the adult water strider body is covered by a pilose double layer consisting of upper long setae (30-80 microm) and lower filiform microtrichia (5-9 microm). only setae are present on the legs. microtrichia on the larval body are very short: 0.5-0.6 microm in fir ... | 2008 | 18302188 |
| how do water striders, aquarius paludum, react to brackish water simulated by nacl solutions? | several stages, from eggs to adults, of the water strider, aquarius paludum (fabricius), inhabiting fresh water are sometimes conveyed by heavy flow in the rainy or typhoon seasons in japan to lotic brackish water in the mouth of rivers. the water striders might then respond to salinity either by remaining to wait for extensive rainfall to reduce osmotic pressure locally before reproducing ("breed here and later tactic") or by flying away to reproduce in fresh waters elsewhere ("breed elsewhere ... | 2006 | 16328541 |
| adult flight in a water strider exposed to habitat drydown in the larval stages. | aquarius paludum inhabits a wide variety of water surfaces, ranging from temporary to permanent ponds and lakes throughout the palearctic. thus, some larvae of a. paludum will be exposed to habitats that dry out. we assess here the influence of drying on water strider growth and development. when exposed to drying-out in the larval stage, the growth period was prolonged. drying-out during one of the first three instars was associated with longer maintenance of flight muscles without histolysis a ... | 2002 | 12536276 |
| lengthening photophase reduces dispersal ability in a water strider, aquarius paludum (f.). | | 1997 | 27518276 |