Results 51 to 60 of about 37,665 (237)

Arg-Vasotocin Directly Activates Isotocin Receptors and Induces COX2 Expression in Ovoviviparous Guppies

open access: yesFrontiers in Endocrinology, 2021
Oxytocin (OT) is a crucial regulator of reproductive behaviors, including parturition in mammals. Arg-vasopressin (AVP) is a nonapeptide homologous to Arg-vasotocin (AVT) in teleosts that has comparable affinity for the OT receptor. In the present study,
Li Kang Lyu   +7 more
doaj   +1 more source

Predation risk reduces a female preference for heterospecific males in the green swordtail [PDF]

open access: yes, 2016
The presence of a predator can result in the alteration, loss or reversal of a mating preference. Under predation risk, females often change their initial preference for conspicuous males, favouring less flashy males to reduce the risk of being detected ...
Alonzo, Suzanne H.   +2 more
core   +1 more source

Liquid Biopsy Differentiation of Pancreatic Cancer From Non‐Cancerous Pancreatic Disease Using Dielectrophoresis‐Recovered Nanoparticles Carrying Cell‐Free DNA and Protein Biomarkers

open access: yesSmall, EarlyView.
A new nanoparticle‐based biomarker panel is described that can differentiate pancreatic cancer from benign pancreatic disease with a high level of performance. This was enabled by microelectrode array recovery technology that used dielectrophoresis (DEP) to quickly and efficiently recover the nanoparticles from patient plasma samples, followed by on ...
Anna Malakian   +23 more
wiley   +1 more source

Morphologic analysis of developmental phases and gill ontogenesis in neotropical species Poecilia vivipara (Cyprinodontiformes: Poeciliidae) exposed to different salinities

open access: yesZoologia (Curitiba), 2010
The present study evaluated and characterized the different phases of development and the cell types present in the gill epithelium of embryos, larvae, and fingerlings of guppy (Poecilia vivipara Bloch & Schneider, 1801) specimens exposed to water with ...
Thiago L. Rocha   +3 more
doaj   +1 more source

Individuality in Fish Behavior: Ecology and Comparative Psychology [PDF]

open access: yes, 2002
This work is a brief review of a series of studies of the phenotypic organization and ecological significance of individual differences in fish behavior.
Budaev, Dr. Sergey, Zworykin, Dr. Dmitry
core  

EE2 and the Fish Brain: Age‐Dependent Impact of 17α‐Ethinylestradiol on Brain Cell Proliferation and Behavior in Sea Bass Larvae

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Endocrine‐disrupting chemicals (EDCs), such as 17α‐ethinylestradiol (EE2), have raised concerns about their potential effects on aquatic organisms, particularly during early developmental stages. In this context, the study of behavioral disruption has gained considerable attention, as it may have consequences on individual fitness and ...
Soloperto Sofia   +6 more
wiley   +1 more source

Fish Space Use and Behavior in an Aquarium: The Use of Microhabitats as Enrichment

open access: yesZoo Biology, EarlyView.
The inclusion of microhabitats in a stream tank serves as environmental enrichment for fish in human care. ABSTRACT Environmental enrichment is an important tool to maintain the health and well‐being of animals in human care, but studies of environmental enrichment for fish in human care have lagged behind those of land animals.
Avery Millard   +14 more
wiley   +1 more source

The Role of Transcription Factors in Gonad Development and Sex Differentiation of a Teleost Model Fish—Guppy (Poecilia reticulata)

open access: yesAnimals, 2020
The guppy (Poecilia reticulata) is one of the world’s most popular ornamental fish. Due to lecithotrophic viviparous, it is commonly used in toxicological studies and environmental monitoring.
Maciej Kamaszewski   +8 more
doaj   +1 more source

Insect Pests Associated With Birdsfoot Trefoil, \u3ci\u3eLotus Corniculatus\u3c/i\u3e, in Wisconsin [PDF]

open access: yes, 2017
Insect surveys taken during 1984-1986 in Ashland and Bayfield Counties of northern Wisconsin revealed that several potential insect pest species were common in birdsfoot trefoil, Lotus corniculatus. Three plant bug species, including: the tarnished plant
Hogg, David B   +3 more
core   +2 more sources

How vulnerable are amphibians to climate change? A mechanistic perspective

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Amphibians are frequently identified as highly vulnerable to climate change, yet the mechanisms driving this sensitivity remain uncertain. Approaches that explicitly link physiological mechanisms to environmental variation provide powerful tools for forecasting climate ...
Eric A. Riddell   +2 more
wiley   +1 more source

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