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Full-Text Articles in Life Sciences

Evaluation Of A Methyl Anthranilate-Based Bird Repellent: Toxicity To Channel Catfish Ictalurus Punctatus And Effect On Great Blue Heron Ardea Herodias Feeding Behavior, Brian S. Dorr, Larry Clark, Igor Mezine Dec 1998

Evaluation Of A Methyl Anthranilate-Based Bird Repellent: Toxicity To Channel Catfish Ictalurus Punctatus And Effect On Great Blue Heron Ardea Herodias Feeding Behavior, Brian S. Dorr, Larry Clark, Igor Mezine

Brian S Dorr

No abstract provided.


Improving Recovery Planning For Threatened And Endangered Species, Theodore C. Foin, Seth P. Riley, Anitra L. Pawley, Debra R. Ayres, Tina M. Carlsen, Peter J. Hodum, Paul V. Switzer Jan 1998

Improving Recovery Planning For Threatened And Endangered Species, Theodore C. Foin, Seth P. Riley, Anitra L. Pawley, Debra R. Ayres, Tina M. Carlsen, Peter J. Hodum, Paul V. Switzer

Paul V. Switzer

No abstract provided.


Leaf Fluctuating Assymetry Increases With Hybridization And Elevation In Tree-Line Birches, Brian J. Wilsey, Erkki Haukioja, Julia Koricheva, Matti Sulkinoja Jan 1998

Leaf Fluctuating Assymetry Increases With Hybridization And Elevation In Tree-Line Birches, Brian J. Wilsey, Erkki Haukioja, Julia Koricheva, Matti Sulkinoja

Brian J. Wilsey

Fluctuating asymmetry (FA), or random non-directional deviations from perfect symmetry in bilaterally or radially symmetrical traits, has recently been proposed to be a useful indicator of genetic and environmental stress. However, the factors underlying fluctuating asymmetry, especially in plants, remain poorly understood. We sampled leaf fluctuating asymmetry among and within three species of even-aged birch (Betula pubescens, B. nana, and B. pendula) and their interspecific hybrids growing in common gardens of northern Finland to determine whether hybridization and environmental stress are associated with increased developmental instability. Our predictions were that: (1) interspecific hybrids among B. pubescens, B. nana, and B. …


Darwinism And Developmentalism: Prospects For Convergence, David Depew Dec 1997

Darwinism And Developmentalism: Prospects For Convergence, David Depew

David J Depew

No abstract provided.


The Subspecies Of Cuora Galbinifrons Bourret, 1939 (Reptilia: Testudines: Bataguridae), Edgar Lehr, Uwe Fritz, Fritz Obst Dec 1997

The Subspecies Of Cuora Galbinifrons Bourret, 1939 (Reptilia: Testudines: Bataguridae), Edgar Lehr, Uwe Fritz, Fritz Obst

Edgar Lehr

(1) C. g. galbinifrons BOURRET, 1939, distributed in North Vietnam (Tonkin) and adjacent southern China, is characterized by its flat and elongated shell and a mainly or entirely black plastron. The carapace bears a wide, anteriorly forked dark brown median band and lacks a solid dark lateral band. The soft parts are sometimes intensely reddish coloured. (2) C. g. bourreti OBST & REIMANN, 1994, occurs in Central Vietnam (Annam, except the southernmost part), and the neighbouring regions of Laos and Cambodia. It is distinguished from the nominotypical subspecies by its more domed, rounder shell, a plastral pattern consisting of black …


Intelligent Design And Irreducible Complexity, David Depew Dec 1997

Intelligent Design And Irreducible Complexity, David Depew

David J Depew

No abstract provided.


The Effect Of Mismatch Repair And Heteroduplex Formation On Sexual Isolation In Bacillus, Jacek Majewski, Frederick M. Cohan Dec 1997

The Effect Of Mismatch Repair And Heteroduplex Formation On Sexual Isolation In Bacillus, Jacek Majewski, Frederick M. Cohan

Frederick M. Cohan

No abstract provided.


Precocene Ii Modifies Maternal Responsiveness In The Burrower Bug, Sehirus Cinctus (Heteroptera)., Scott Kight Dec 1997

Precocene Ii Modifies Maternal Responsiveness In The Burrower Bug, Sehirus Cinctus (Heteroptera)., Scott Kight

Scott Kight

The anti‐Juvenile Hormone agent precocene II was used to investigate the relationship of corpora allata activity to subsocial behaviour in a burrower bug Sehirus cinctus Palisot (Heteroptera: Cydnidae). Egg‐brooding females treated with a range of dosages of precocene II exhibited reliably depressed maternal defensive behaviour when treated with at least 70 μg of precocene II, but attraction to eggs was only depressed at higher dosages. This effect was not due to precocene II toxicity, as demonstrated by the prevention of depression effects through simultaneous treatments of precocene II and the Juvenile Hormone analogue methoprene. Methoprene, however, failed to reinstate maternal …