Results 71 to 80 of about 1,479,149 (388)

The use of tricaine methanesulfonate, clove oil, metomidate, and 2-phenoxyethanol for anesthesia induction in alewives (Alosa pseudoharengus) [PDF]

open access: yes, 2015
Anesthetics are widely used in routine aquaculture operations to immobilize animals for tagging, spawning, handling, and vaccination. A number of anesthetics are currently available for finfish, but their efficacy and optimal dosage is highly species ...
Watson, Mark Thomas
core   +2 more sources

Effects of Flight on Gene Expression and Aging in the Honey Bee Brain and Flight Muscle [PDF]

open access: yes, 2012
Honey bees move through a series of in-hive tasks (e.g., “nursing”) to outside tasks (e.g., “foraging”) that are coincident with physiological changes and higher levels of metabolic activity.
Ammons, Andrew   +5 more
core   +5 more sources

Early synapsids neurosensory diversity revealed by CT and synchrotron scanning

open access: yesThe Anatomical Record, EarlyView.
Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit   +6 more
wiley   +1 more source

The effect of ovary implants on juvenile hormone production by corpora allata of male Diploptera punctata

open access: yesJournal of Insect Science, 2003
In the cockroach Diploptera punctata, vitellogenic basal oocytes stimulate juvenile hormone production by the corpora allata. Experiments with males were designed to determine whether oocytes must grow vitellogenically in order to stimulate juvenile ...
J.K. Hass   +3 more
doaj  

POU-M2 promotes juvenile hormone biosynthesis by directly activating the transcription of juvenile hormone synthetic enzyme genes in Bombyx mori

open access: yesOpen Biology, 2022
Juvenile hormone (JH) plays a key role in preventing larval precocious metamorphosis, maintaining larval state, controlling adult sexual development and promoting insect egg maturation.
Rui Cai   +5 more
doaj   +1 more source

E93 expression and links to the juvenile hormone in hemipteran mealybugs with insights on female neoteny

open access: yesbioRxiv, 2018
Insect metamorphosis generates reproductive adults and is commonly accompanied by the direct or indirect development of wings. In some winged insects, the imago is altered by life history changes.
I. Vea   +5 more
semanticscholar   +1 more source

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica)

open access: yesThe Anatomical Record, EarlyView.
Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc   +26 more
wiley   +1 more source

Structure Determination of a Natural Juvenile Hormone Isolated from a Heteropteran Insect

open access: yesPsyche: A Journal of Entomology, 2012
Juvenile hormone (JH), which occurs in several forms in different insects, is one of the most important insect hormones. The structure of JH in Heteroptera has not been elucidated until recently, although insects in this suborder have long been used as ...
Toyomi Kotaki   +2 more
doaj   +1 more source

How ants send signals in saliva

open access: yeseLife, 2016
Adult ants use saliva to transfer juvenile hormone and other chemical signals to their larvae.
Markus Knaden
doaj   +1 more source

Relations of environmental contaminants, algal toxins, and diet with the reproductive success of American alligators on Florida Lakes [PDF]

open access: yes, 2001
(113 page ...
Arnold, Beverly S.   +3 more
core  

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