Behavioural responses of caddisfly larvae (Hydropsyche angustipennis) to hypoxia

Respiratory and circulatory responses of rainbow trout larvae to carbon monoxide and to hypoxia.

The purpose of this investigation was to explore the ontogeny of certain respiratory responses of rainbow trout. Adult trout respond to hypoxia with an increase in the flow of water over the respiratory surfaces, and with a reflex bradycardia (Holeton & Randall, 1967). When adult rainbow trout are exposed to 5% carbon monoxide (CO) and thus rendered anoxaemic while at the same time their arteri...

Development of cardiovascular responses to hypoxia in larvae of the frog Xenopus laevis.

Cardiovascular responses (blood pressure, heart rate, stroke volume, cardiac output, and peripheral vascular resistance) to acute hypoxia (Po2 = 70 mmHg) in developing larvae of Xenopus laevis from Nieuwkoop-Faber (NF) stage 45 and up to newly metamorphosed froglets were investigated. The results revealed two distinct response patterns to acute hypoxia in "early" (NF stages 45-48 and 49-51) and...

Responses to Acute Aquatic Hypoxia in Larvae of the Frog Rana Beriandieri

The oxygen consumption of larvae of the irogRana berlandieri Baird was reduced during exposure to aquatic hypoxia at 25 °C, and under severe hypoxia the larvae lost oxygen to the water. The larvae responded to aquatic hypoxia by increasing aerial oxygen consumption and lung ventilatory frequency, and also by altering their heart rate and gill ventilation frequency. Under severe or prolonged aqu...

Behavioural responses of naked mole rats to acute hypoxia and anoxia.

Naked mole rats (NMRs) are among the most hypoxia-tolerant mammals. Other species respond to hypoxia by either escaping the hypoxic environment or drastically decreasing behavioural activity and body temperature (Tb) to conserve energy. However, NMRs rarely leave their underground burrows, which are putatively hypoxic and thermally stable near the NMRs' preferred Tb Therefore, we asked whether ...

Atypical soluble guanylyl cyclases mediate behavioral responses to hypoxia in Drosophila larvae