Striped mouse

Striped mouse

Striped mouse (Rhabdomys pumilio) on the cover of the August edition of Behaviour

Striped mouse (Rhabdomys pumilio) on the cover of the August edition of Behaviour
My photo and the accompanying paper (see List of publications) were published in this issue.

Wednesday, June 26, 2013

Summary: Krane et al. (2003)

The Indonesian prosimian, the slow loris Nycticebus coucang are known to inflict painful (occasionally fatal) bites that elicit anaphylaxis. The "venom" originates in the brachial organ. This organ is located in a naked area of skin on the inner arm surface. Krane et al. (2003) isolated a 18kDA protein (two 70-90 amino-acid chains with linking disulphide bonds) from the brachial organ. The N-termini of the protein chains were similar to an allergen from common house cats Felis catus, Fel d 1, suggesting the they exhibit inorganic cross- reactivity. This, together with the display of anaphylaxis and increased sensitivity to slow loris bites indicates that this slow loris protein is an allergen.

Monday, June 17, 2013

Summary: Maia & Volpato (2013)

The colour of environmental light can influence the stress-induced cortisol response observed in fish. Maia & Volpato (2013) investigated the effects of three (blue, yellow, white) environmental light colours on the stress response (changes in ventilatory frequency) of Nile tilapia Oreochromis niloticus to confinement. They found that, after 7 days, fish ventilatory frequency was similar under each environmental colour. Similarly, after a 15 minute period of confinement, ventilatory frequency increased, regardless of environmental colour, in the first period (0-4 minutes). Interestingly, Maia & Volpato (2013) found that, irrespective of time, fish kept under white light showed a higher post-confinement ventilatory frequency compared to fish kept under blue light. They suggest that Nile tilapia should be maintained under blue light to minimize stress.