Results 91 to 100 of about 13,442 (233)

A record of bilateral gynandromorphism in Epeolus (Hymenoptera: Apidae: Nomadinae) [PDF]

, 2018
The discovery of a gynandromorph of a North American Epeolus Latreille is reported. A specimen of E. flavofasciatus Smith from Flagstaff, Arizona, USA discovered in the collection of the American Museum of Natural History (AMNH) exhibits male-specific ...
Onuferko, Thomas M
core   +2 more sources

Killing behaviour of adult brood parasites

Behaviour, 2020
Abstract Decades of studies have revealed the striking adaptations of avian brood parasites for their unique reproductive lifestyle. Several have reported that adult brood parasites sometimes kill host nestlings, although the reasons for this behaviour remain unclear.
Michal Šulc, Gabriela Štětková, Václav Jelínek, Beata Czyż, Andrzej Dyrcz, Oliwia Karpińska, Katarzyna Kamionka Kanclerska, Patryk Rowiński, Marta Maziarz, Adam Gruszczyński, Anna Hughes, Marcel Honza   +11 more
openaire   +2 more sources

Contrasting life‐history strategies of three sympatric icefish species in the northern Scotia Sea

Journal of Fish Biology, EarlyView.
Abstract Comprehending a species' life‐history strategies is crucial to inform effective conservation efforts. Commercial fishing impacts icefish (family: Channichthyidae) in the Scotia Sea, but detailed information on species‐specific life histories remains largely unknown.
Huw W. James, Timothy Jones, Fabrice Stephenson, Philip R. Hollyman, William D. K. Reid, Martin A. Collins   +5 more
wiley   +1 more source

Integrative taxonomy supports DNA barcoding in revealing an abundant cryptic species in the United States Coastal Plain

Journal of Systematics and Evolution, EarlyView.
We present the most densely sampled phylogeny of Carex section Lupulinae to date (107 specimens) and describe herein a new cryptic species for science from the southern United States, which is locally abundant and found in well‐explored and densely populated areas. Combining DNA sequences with morphometric data obtained from 299 samples, we Demonstrate
Étienne Lacroix‐Carignan, Julian R. Starr, Robert F. C. Naczi, Eran S. Kilpatrick, Étienne Léveillé‐Bourret   +4 more
wiley   +1 more source

Silene, a versatile model system: from sex and genome evolution to ecology and speciation

New Phytologist, EarlyView.
Summary Fundamental and applied research in evolutionary biology benefits from the use of model systems in which approaches from disparate disciplines can be integrated. Here, we review recent progress in evolutionary research on the long‐standing model system Silene, a large genus with a well‐resolved phylogeny and newly available, expanded genomic ...
Sophie Karrenberg, Václav Bačovský, Andrea E. Berardi, Isabelle De Cauwer, Tatiana Giraud, Fanny E. Hartmann, Roman Hobza, Vojtěch Hudzieczek, Gabriel A.B. Marais, Jenna R. Miladin, Bengt Oxelman, Alexander S.T. Papadopulos, Daniel B. Sloan, Janet C. Steven, Helena Štorchová, Pascal Touzet, Fabienne Van Rossum   +16 more
wiley   +1 more source

Experimental shifts in intraclutch egg color variation do not affect egg rejection in a host of a non-egg-mimetic avian brood parasite.

PLoS ONE, 2015
Avian brood parasites lay their eggs in the nests of other birds, and impose the costs associated with rearing parasitic young onto these hosts. Many hosts of brood parasites defend against parasitism by removing foreign eggs from the nest.
Rebecca Croston, Mark E Hauber
doaj   +1 more source

Reticence or vigilance at the nest: a cruel bind for the endangered Black-capped Vireo

Avian Conservation and Ecology, 2017
Breeding birds vocalize to find mates and establish and defend territories, but these same critical communications may also attract predators or brood parasites, placing birds in a cruel bind.
Lauren E. Walker, John M. Marzluff
doaj   +1 more source

Naïve hosts of avian brood parasites accept foreign eggs, whereas older hosts fine-tune foreign egg discrimination during laying [PDF]

, 2014
BACKGROUND: Many potential hosts of social parasites recognize and reject foreign intruders, and reduce or altogether escape the negative impacts of parasitism.
Csaba Moskát, Miklós Bán, Márk E Hauber   +2 more
core   +2 more sources

Macronutrient composition in pollen affects development and survival in wild bees

Physiological Entomology, EarlyView.
Small carpenter bees (Ceratina calcarata) were reared on diets formulated with black poplar and dandelion pollen, while closely monitoring developmental metrics, lipid content and survival. Macronutrient analyses on both pollen types revealed dandelion pollen contained lower levels of protein, essential amino acids and several fatty acids, which ...
Khara W. Stephen, Sandra M. Rehan
wiley   +1 more source

Cognitive Symbionts. Expanding the Scope of Cognitive Science With Fungi

Topics in Cognitive Science, EarlyView.
Abstract It has been argued that fungi have cognitive capacities, and even conscious experiences. While these arguments risk ushering in unproductive disputes about how words like “mind,” “cognitive,” “sentient,” and “conscious” should be used, paying close attention to key properties of fungal life can also be uncontroversially productive for ...
Matteo Colombo
wiley   +1 more source