Amphibious communication with sound in hippos, Hippopotamus amphibius

  title={Amphibious communication with sound in hippos, Hippopotamus amphibius
  author={William E. Barklow},
  journal={Animal Behaviour},

Acoustic and behavioral repertoires of the hippopotamus (Hippopotamus amphibius).

Video analysis demonstrated that chuffs, groans, and whines were associated with submissive contexts, while snorts, grunts, and growls were associatedWith dominance contexts, and further information is provided about the acoustic signals and concurrent behavior of hippos.

Underwater click train production by the hippopotamus (Hippopotamus amphibius) suggests an echo-ranging function

Common hippos ( Hippopotamus amphibius ) live in murky waters and produce a variety of acoustic signals including underwater click trains considered to be social in function. We tested the hypothesis

So Small, So Loud: Extremely High Sound Pressure Level from a Pygmy Aquatic Insect (Corixidae, Micronectinae)

The calling song produced by the male of a small insect, the water boatman Micronecta scholtzi, appears as an extreme value, outperforming marine and terrestrial mammal vocalisations and may be interpreted as an exaggerated secondary sexual trait resulting from a runaway sexual selection without predation pressure.

A field study of auditory sensitivity of the Atlantic puffin, Fratercula arctica

The threatened seabird the Atlantic puffin has a comparatively sensitive audiogram, indicating it has fully functioning aerial hearing despite the constraints of its deep-diving, amphibious lifestyle.

A Comparison of Common Hippopotamus (Artiodactyla) and Mysticete (Cetacea) Nostrils: An Open and Shut Case

Comparisons and differences of the nostrils/blowholes of fully aquatic, semi‐aquatic, and terrestrial species are discussed to assess adaptations related to environmental conditions that may be convergent or derived from a common ancestor.

Acoustic Analysis of Airborne, Underwater, and Amphibious Mother Attraction Calls by Wild Harbor Seal Pups (Phoca vitulina)

Results indicated that harbor seal pup calls encode an individual signature that might allow recognition of young by mothers, in which case females must continuously learn their pup's changing voice throughout of the rearing period.

Infrasonic and Seismic Communication in the Vertebrates with Special Emphasis on the Afrotheria: An Update and Future Directions

This chapter furnishes a blueprint for a set of experiments that would provide novel and interesting data to fill the lacunae in the understanding of seismic signal detection and localization by these enigmatic animals.

A field study of auditory sensitivity of the Atlantic puffin, <italic>Fratercula arctica</italic>

The audiogram was comparable to that of other birds of similar size, thereby indicating that puffins have fully functioning aerial hearing despite the constraints of their deep-diving, amphibious lifestyles.

Voice of the turtle: the underwater acoustic repertoire of the long-necked freshwater turtle, Chelodina oblonga.

This study reports the first records of an underwater acoustic repertoire in an aquatic chelonian, a long-necked, freshwater turtle found predominantly in the wetlands on the Swan Coastal Plain of Western Australia.



Some underwater sounds of the hippopotamus (hippopotamus amphibius)

Hippos have at least three categories of sounds they give underwater that include tonal whines that are associated with submissive behavior; a pulsed croak that is often heard when calves and sub‐adults are interacting underwater; and click‐like sounds that seem to be used for communication rather than echolocation.

Low-frequency amphibious hearing in pinnipeds: methods, measurements, noise, and ecology.

Comparisons of each subject's aerial and underwater thresholds revealed the sea lion is adapted to hear best in air; the harbor seal hears almost equally well in air and under water; and the elephant seal's auditory system is adapted for underwater functioning at the expense of aerial hearing sensitivity.

The Marine Mammal Ear: Specializations for Aquatic Audition and Echolocation

“Marine mammal” is a broad categorization for over 150 species that have one feature in common: the ability to function effectively in an aquatic environment. They have no single common aquatic

Underwater Hearing in the Frog, Rana Catesbeiana

This report is the first to compare aerial and underwater hearing abilities in any organism using electrode implants and an attempt is made to relate the results to morphology of the middle and inner ears.

Origin of underwater hearing in whales

The incus and mandible of Pakicetus indicate that the path of soundwaves to its ear resembled that of land mammals, and corroborate the hypothesis that artiodactyls are the closest extant relatives of cetaceans.

Why pinnipeds don't echolocate.

It is argued that an advanced echolocation system is unlikely to have evolved in pinnipeds primarily because of constraints imposed by the obligate amphibious functioning of the pinniped auditory system and, as a result, pinnIPeds have not developed highly acute, aquatic, high frequency sound production or reception systems required for underwater e cholocation.

Shallow-water propagation of the toadfish mating call.

  • M. FineM. Lenhardt
  • Physics, Environmental Science
    Comparative biochemistry and physiology. A, Comparative physiology
  • 1983

Structure, Function, and Adaptation of the Manatee Ear

All major hard and soft tissues of the peripheral auditory system of T. manatus are described, new information on specialized cranial features that may be important for sound conduction are presented, and morphometrybased estimates of the frequency range and sensitivity of West Indian manatee ears are provided.

Marine Mammal Sensory Systems

Sensory Anatomy, Morphology, and Neurology: Morphological and Histochemical Features of Odontocete Visual Neocortex I. Glezer, et al. The Cetacean Ear D.R. Ketten. Hearing Abilities: Auditory

Underwater Barking by Male Sea Lions (Zalophus californianus)

Sonograms of barks from Zalophus were presented and it was thought that it was unlikely that these barks originated entirely in air and suggested that they were transmitted into the water by vibration of the submerged throat area while the sea lion's nose and mouth were in air.