Diel variation in blue whale calls recorded in the eastern tropical Pacific

Article Abstract:

A null hypothesis is tested that blue whale calling behavior does not show significant diel variation in order to determine whether variability in calling could provide an indication as to the behavioral function of B calls. These diel patterns in call production correlate well with established diel patterns in prey distribution, with the highest calling rates occurring when prey is reported to be closet to the surface.

Hunting, trapping, game propagation, Whales, Hunting and Trapping, Psychological aspects, Physiological aspects, Cetacea

---

Vocal labelling of family members in spectacled parrotlets, Forpus conspicillatus

Article Abstract:

The use of different acoustic signals by spectacled parrotlets for different family members is tested. The birds responded more often to calls uttered in their presence than to calls uttered in the presence of another family member and use contact calls to refer to a social companion, thereby labelling or naming their conspecifics.

Parrots

---

Diel flight periodicity and the evolution of auditory defences in the Macrolepidoptera

Article Abstract:

Research is presented concerning the investigation of 7 ultrasound-eared and 12 ultrasound-earless families of Nearctic Lepidoptera to determine their auditory defences and evolution of the diel flight periodicities.

Insects, Insect flight, Lepidoptera

Similar abstracts:

• Abstracts: Decline of surface temperature and salinity in the western tropical Pacific Ocean in the Holocene epoch. Palaeo-oceanography Deepwater variability in the Holocene epoch:
• Abstracts: In situ examination of boldness-shyness traits in the tropical poeciliid, Brachyraphis episcopi. Predator - induced plasticity in web - building behavior
• Abstracts: Stabilizing and directional female choice for male calls in the European green toad. Active choice, passive attraction and the cognitive machinery of acoustic preferences
• Abstracts: Energetic constraints on the diet of terrestrial carnivores. An index of intactness
• Abstracts: Direct observation of electron dynamics in the attosecond domain. Conversion of large-amplitude vibration to electron excitation at a metal surface

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.