Preparing the Perfect Cuttlefish Meal: Complex Prey Handling by Dolphins

Preparing the Perfect Cuttlefish Meal: Complex Prey Handling by Dolphins

Dolphins are well known for their complex social and foraging behaviours. Direct underwater observations of wild dolphin feeding behaviour however are rare. At mass spawning aggregations of giant cuttlefish (Sepia apama) in the Upper Spencer Gulf in South Australia, a wild female Indo-Pacific bottlenose dolphin (Tursiops aduncus) was observed and recorded repeatedly catching, killing and prepar...

Prey size , prey nutrition , and food handling by shrews of different body sizes

National performance data registries: preparing for the perfect storm.

I N October 1991, a series of mundane weather fronts combined in the Maritimes southeast of Nova Scotia to form a monstrous anomaly that the National Weather Service termed the “perfect storm.” In 2000, The Perfect Storm, a movie adaptation of Sebastian Junger’s book of the same name, chronicled the perilous course of the swordfishing boat Andrea Gail as it unrealistically chose to challenge th...

Acoustic basis for fish prey discrimination by echolocating dolphins and porpoises.

The biosonar system of dolphins and porpoises has been studied for about 5 decades and much has been learned [Au, W. W. L. (1993). The Sonar of Dolphins (Springer, New York)]. Most experiments have involved human-made targets; little is known about odontocetes' echolocation of prey. To address this issue, acoustic backscatter from Atlantic cod (Gadus morhua), gray mullet (Chelon labrosus), poll...

Computational Complex Predator-prey Dynamics

Two species predator-prey with stage structure of mature and immature mathematical models are studied over the last few decades. Xin-an Zhang et al studied a mathematical model with stage structure of two species in 2010. In this article, an attempt has been made to comprehend the coupled predator-prey dynamics with mature-immature stage structure and compare the dynamics with the existing mode...