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Life Sciences Commons

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Selected Works

1987

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Institution
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Articles 31 - 37 of 37

Full-Text Articles in Life Sciences

The 20-Hz Signals Of Finback Whales (Balaenoptera Physalus), William Watkins, Peter Tyack, Karen Moore, James Bird Dec 1986

The 20-Hz Signals Of Finback Whales (Balaenoptera Physalus), William Watkins, Peter Tyack, Karen Moore, James Bird

James E Bird

The 20-Hz signals of finback whales (Balaenoptera physalus) were analyzed from more than 25 years of recordings at a variety of geographic locations on near-surface hydrophones close to whales and on deep hydrophone systems. These signals were composed of 1-s pulses of sinusoidal waveform with downward sweeping frequency from approximately 23 to 18 Hz at variable source levels up to 186 dB (re: 1 microPa at 1 m), usually with slightly lower levels for the pulses at the beginning and end of sequences. These "20-Hz" pulses were produced in signal bouts (separated by more than 2 h) lasting as long …


Speedreading, Marcel Just, Patricia Carpenter Dec 1986

Speedreading, Marcel Just, Patricia Carpenter

Marcel Adam Just

No abstract provided.


Strain Development In Insect Mass Production Programs., David B. Taylor Dec 1986

Strain Development In Insect Mass Production Programs., David B. Taylor

David B. Taylor

No abstract provided.


Dyslexia, Marcel Adam Just, Patricia A. Carpenter Dec 1986

Dyslexia, Marcel Adam Just, Patricia A. Carpenter

Marcel Adam Just

No abstract provided.


Genetic Compatibility Of Aedes (Protomacleaya) Triseriatus With A. (P.) Brelandi And A. (P.) Hendersoni (Diptera: Culicidae)., David B. Taylor Dec 1986

Genetic Compatibility Of Aedes (Protomacleaya) Triseriatus With A. (P.) Brelandi And A. (P.) Hendersoni (Diptera: Culicidae)., David B. Taylor

David B. Taylor

Interspecific hybridization was used to examine reproductive compatibility of Aedes (Protomacleaya) triseriatus (Say) with Aedes (P .) brelandi Zavortink and Aedes (P.) hendersoni Cockerell. Most male progeny were sterile intersexes when A. brelandi or A. hendersoni males were crossed with A. triseriatus females. Female hybrids, and males from the reciprocal crosses, were morphologically normal and fertile. Varying percentages of intersex males were observed among progeny when normal F1 hybrids were crossed to either parental species or with other hybrids. Egg and female sterility resulting from a partial incompatibility between A. triseriatus cytoplasm and …


Degree Of Behavioral Neoteny Differentiates Canid Polymorphs, R Coppinger, J. Glendinning, E. Torop, C. Matthay, M. Sutherland, C. Smith Dec 1986

Degree Of Behavioral Neoteny Differentiates Canid Polymorphs, R Coppinger, J. Glendinning, E. Torop, C. Matthay, M. Sutherland, C. Smith

Charles Kay Smith

As with juvenile wolves or coyotes, adult livestock conducting dogs displayed the first-half segment of a functional predatory system of motor patterns and did not express play or social bonding toward sheep; whereas, like wolf or coyote pups, adult livestock protecting dogs displayed sequences of mixed social, submissive, play and investigatory motor patterns and rarely expressed during ontogeny (even when fully adult) predatory behaviors. The most parsimonious explanation of our findings is that behavioral differences in the two types of livestock dogs are a case of selected differential retardation (neoteny) of ancestral motor pattern development.


Who Is The Manufacturer Of Nulante?, Mason James Dec 1986

Who Is The Manufacturer Of Nulante?, Mason James

Mason James

It is detailed utilizing the mix of nutrients, minerals, and all other basic supplements to reestablish your young look. Numerous items offer collagen particles which are too huge to ever be ingested into the skin and probably won't give any perceptible outcomes. This is the place Nulante skincare cream may demonstrate to be successful by giving supplements that are proficiently ingested into the skin. Whenever utilized all the time, you may likewise see a firmer structure and reestablish the energetic appearance of your skin. It could offer you the improvement of uneven and hanging skin too for a smooth, without …