Open Access. Powered by Scholars. Published by Universities.®
- Institution
Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Nocturnal Copulation In Glaucous-Winged Gulls Larus Glaucescens, Floyd E. Hayes, James L. Hayward
Nocturnal Copulation In Glaucous-Winged Gulls Larus Glaucescens, Floyd E. Hayes, James L. Hayward
Faculty Publications
Gulls (Laridae) are primarily diurnal, although many species forage opportunistically at night, and several species copulate at night. We used trail cameras to study time-of-day variation in the rate of copulation by Glaucous-winged Gulls Larus glaucescens in a breeding colony (1500+ pairs) at Protection Island, Washington, USA, from 31 May to 07 June 2018. Copulations (n = 353) occurred at a significantly higher rate during the day (0.82/camera-h) than at night (0.51/camera-h), with 76.3 % of copulations during the day and 23.7 % at night (daylight comprised 66.1 % and darkness comprised 33.9 % of the study period). The …
Novel Species-Specific Glycoprotein On The Surface Of Mytilus Edulis And M. Trossulus Eggs, Fiona M. Harper, Kasandra J. Riley, R. D. Rawson
Novel Species-Specific Glycoprotein On The Surface Of Mytilus Edulis And M. Trossulus Eggs, Fiona M. Harper, Kasandra J. Riley, R. D. Rawson
Faculty Publications
Protein–protein interactions play a central role in the gamete attraction, binding, and fusion stages of gamete interactions and fertilization for broadcast spawning species, such as marine mussels in the Mytilus edulis species complex. Although assortative gamete interaction has been implicated in the level of reproductive isolation among the three species in this complex, the molecular basis of these interactions has not been elucidated. Using mass spectrometry peptide sequencing, cDNA sequencing, and bioinformatics approaches, we have investigated species-level variation in the proteins expressed on the surface of mussel eggs. We herein describe an extracellular protein, MESP-1, from the surface of the …
Viability Costs Of Reproduction And Behavioral Compensation In Western Mosquitofish (Gambusia Affinis), Clinton T. Laidlaw, Jacob M. Condon, Mark C. Belk
Viability Costs Of Reproduction And Behavioral Compensation In Western Mosquitofish (Gambusia Affinis), Clinton T. Laidlaw, Jacob M. Condon, Mark C. Belk
Faculty Publications
The cost of reproduction hypothesis suggests that current reproduction has inherent tradeoffs with future reproduction. These tradeoffs can be both in the form of energy allocated to current offspring as opposed to somatic maintenance and future reproduction (allocation costs), or as an increase in mortality as a result of morphological or physiological changes related to reproduction (viability costs). Individuals may be able to decrease viability costs by altering behavior. Female western mosquitofish, Gambusia affinis experience a reduction in swimming ability as a consequence of pregnancy. We test for a viability cost of reproduction, and for behavioral compensation in pregnant female …
Assessing Multiple Endpoints Of Atrazine Ingestion On Gravid Northern Watersnakes (Nerodia Sipedon) And Their Offspring [Abstract], L. A. Neuman-Lee, K. F. Gaines, K. A. Baumgartner, J. R. Voorhees, J. M. Novak, Stephen J. Mullin
Assessing Multiple Endpoints Of Atrazine Ingestion On Gravid Northern Watersnakes (Nerodia Sipedon) And Their Offspring [Abstract], L. A. Neuman-Lee, K. F. Gaines, K. A. Baumgartner, J. R. Voorhees, J. M. Novak, Stephen J. Mullin
Faculty Publications
No abstract provided.