Life Sciences Commons^™

The Phylogeny Of Paralabrax (Perciformes: Serranidae) And Allied Taxa Inferred From Partial 16s And 12s Mitochondrial Ribosomal Dna Sequences, Daniel Pondella, Matthew Craig, Jens Frank

Daniel Pondella

Partial sequences of 16S and 12S mitochondrial ribosomal DNA were used to examine the phylogenetic relationships of the primarily eastern Pacific genus Paralabrax (Perciformes: Serranidae) and allied taxa. Paralabrax is considered a basal serranine, which is itself considered the basal subfamily in the Serranidae. Multiple serranines reported closely related to Paralabrax from the genera Serranus, Hypoplectrus, Cratinus, and Centropristis were used as outgroups. Species from the remaining two subfamilies, Epinephilinae and Anthiinae, of the Serranidae were also used in the analyses. The tree of the Serranidae was rooted with the families Polyprionidae and Priacanthidae. Paralabrax, the Serranidae, and the Serraninae …

[James Mark] Baldwin And His Many Effects, David Depew

David J Depew

No abstract provided.

Evolution And Learning: The Baldwin Effect Reconsidered, David Depew, Bruce Weber

David J Depew

The role of genetic inheritance dominates current evolutionary theory. At the end of the nineteenth century, however, several evolutionary theorists independently speculated that learned behaviors could also affect the direction and rate of evolutionary change. This notion was called the Baldwin effect, after the psychologist James Mark Baldwin. In recent years, philosophers and theorists of a variety of ontological and epistemological backgrounds have begun to employ the Baldwin effect in their accounts of the evolutionary emergence of mind and of how mind, through behavior, might affect evolution.

The essays in this book discuss the originally proposed Baldwin effect, how it …

A New Species Of Phrynopus (Amphibia, Anura, Leptodactylidae) From The Puna Of Maraypata (Departamento De Huánuco, Peru), Edgar Lehr, Cesar Aguilar

Edgar Lehr

A new medium-sized species of leptodactylid frog, genus Phrynopus is described from the puna of the eastern Andean slopes of central Peru (Departamento de Huanuco, 3 770m above sea level). The new species differs from all described species of the genus by having a pale brownish orange dorsal coloration, and a pale cream to orange ventral coloration. The new species lacks ear and vomerine teeth, and is most similar to P barthlenae with which it occurs sympatrically. Males of the new species are unknown.

The Impacts Of Aquacultured Oysters, Crassostrea Virginica (Gmelin, 1791) On Water Quality And Sedimentation: Results Of A Mesocosm Study, Michael A. Rice

Michael A Rice

To determine effects of aquacultured oysters Crassostrea virginica (Gmelin, 1791) on the overlying water column, a mesocosm study was performed at the Marine Ecosystem Research Laboratory (MERL) from June to October, 2000. The MERL facility is located adjacent to Narragansett Bay and consists of fourteen 13,000-l mesocosm tanks designed to simulate the Bay environmental conditions. Two hundred oysters (c35 mm valve height; nominally filtering about 55 l/day/individual) were placed into three mesocosms, and three mesocosms were maintained without oysters as controls. Experiments were run with varying rates of water exchange in the tanks ranging from 0% to 100% per day …

Evolutionary Relationships Of Deep-Sea Vent And Cold Seep Clams, Shana Goffredi, L A. Hurtado, S Hallam, R C. Vrijenhoek

Shana Goffredi

Phylogenetic relationships among vesicomyid clams (Bivalvia: Vesicomyidae) and their placement within the order Heterodonta were examined using mitochondrial encoded cytochrome oxidase subunit I (COI) DNA sequences. The presently analyzed vesicomyids represent a recent monophyletic radiation that probably occurred within the Cenozoic. Nucleotide phylogenetic analyses resolved discrete clades that were consistent with currently recognized species: Calyptogena magnifica, C. ponderosa, Ectenagena extenta, C. phaseoliformis, Vesicomya cordata, Calyptogena n. sp. (Gulf of Mexico), C. kaikoi, C. nautilei, C. solidissima and C. soyoae (Type-A). However, specimens variously identified as: V. gigas, C. kilmeri, C. pacifica, and V. lepta comprised two “species complexes”, each composed …

Gradual Evolution In Bacteria: Evidence From Bacillus Systematics, M. Feldgarden, N. Byrd, Frederick M. Cohan

Frederick M. Cohan

No abstract provided.

From Behavior To Culture: An Assessment Of Cultural Evolution And A New Synthesis, Dwight W. Read

Dwight W Read

Three approaches to cultural evolution—sociobiology, dual inheritance, and memes—are reviewed and it is shown that each makes use of an incomplete notion of what constitutes culture.

Incorporating Local Knowledge Into Population And Habitat Viability Assessments: Landowners And Tree Kangaroos In Papua New Guinea, Philip J. Nyhus, J Williams, J Borovansky, O Byers, P Miller

Philip J. Nyhus

No abstract provided.

Poetry, Music, And The Sustainability Of Language, Jan Wellington

Jan Wellington

No abstract provided.

Protecting Evolutionary Theory From Bad Company: J. Strick, Sparks Of Life: Darwinism And The Victorian Debates Over Spontaneous Generation (Review), David J. Depew

David J Depew

No abstract provided.