Results 61 to 70 of about 43,330 (296)

RESULTS OF PIKE PERCH SANDER LUCIOPERCA INTRODUCTION IN LAKE KHANKA

Известия ТИНРО, 2018
Pike perch was introduced into Lake Khanka in 1970–1978. The introduction was founded on concept of low commercial productivity of the lake prevailed in those times. For the past 50 years, the species acclimatized successfully in the lake.
M. E. Shapovalov
doaj   +1 more source

Effects of 17α‐Ethinylestradiol on Development and Gonadal Differentiation in the Estuarine Mummichog, Fundulus heteroclitus

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT In fish, sex determination and gonadal development are controlled by various genetic and environmental factors. In this study, experiments were conducted on the estuarine mummichog (Fundulus heteroclitus) to investigate gonadal differentiation following exposure to the synthetic estrogen, 17α‐ethinylestradiol (EE2).
Ibrahim Chehade, Carly Sing‐Judge, Emily Corrigan, Andrea Lister, Glen Van Der Kraak, Deborah MacLatchy   +5 more
wiley   +1 more source

The peculiarities offish sex cycles and their ovary ripeness stages

Юг России: экология, развитие, 2015
All the ovogenesis and sex cycles peculiarities of the studied fishes are species-specific with biology particularity of different fishes including their reproductions.
N. I. Rabazanov, M. M. Shihshabekov, D. R. Aduyeva, G. Sh. Gadjimuradov, M. M. Nabiyev, D. M. Ramazanova   +5 more
doaj   +1 more source

The Individual and Combined Effects of Warming and Atrazine on Lithobates pipiens Phenotypes: Implications for Frog Declines

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Amphibians are the most threatened vertebrate class globally. Climate change, agrochemicals, and/or pathogens and parasites are implicated in contributing to amphibian declines, either singly or in combination. We investigated individual and combined effects of elevated temperatures and atrazine (2.0 μg/L) on Lithobates [formerly Rana] pipiens
Melody J. Gavel, Mark R. Forbes, Derek D. N. Smith, Julia Darabaner, Yol Monica Reyes, Zintis Stasko, David J. Carpenter, Stacey A. Robinson   +7 more
wiley   +1 more source

Population Dynamics of the Widespread Alien Decapod Species, Brown Shrimp (Penaeus aztecus), in the Mediterranean Sea

Animals
This study investigated the population dynamics, growth, reproduction, and parasitism of Penaeus aztecus over a 27-month period in Antalya Bay (Eastern Mediterranean). P.
Mehmet Cengiz Deval, Tomris Deniz
doaj   +1 more source

Sound from spawning cod at their spawning grounds [PDF]

ICES Journal of Marine Science, 1999
Sound was recorded at five stations at and near the main spawning grounds of the northeast Arctic cod (Gadus morhua L.) off the Lofoten Islands, Norway. Recordings were carried out during April 1997 when large numbers of cod aggregated to spawn, and were repeated in September when the cod were no longer spawning and, in fact, most had emigrated.
openaire   +1 more source

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

Mass Spectrometry Reviews, EarlyView.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo, Huiling Wang, Xiaolan Hu, Sasho Gligorovski, Xue Li, Pablo Sinues   +5 more
wiley   +1 more source

Teach Aquaculture Curriculum: Spawning and Rearing Bivalve Molluscs—Spawning

EDIS, 2011
This document contains an activity for students about methods for spawning bivalve molluscs like clams or oysters using temperature manipulation. Students will use an ocular micrometer to measure the diameter of bivalve eggs and the length of bivalve larvae.
R. Leroy Creswell, Cortney L. Ohs, Elisa J. Livengood, Amber L. Garr, Bryan Myers, Carlos V. Martinez, Frank A. Chapman   +6 more
openaire   +5 more sources

Urophysial and pituitary extracts for spawning induction in teleosts Extratos urofisário e hipofisário para indução da desova em teleósteos

Ciência Rural, 2000
Several studies have suggested that the caudal neurosecretory system could act on fish reproduction. The aim of this study was to compare the effect of urophysial extract (UE) and carp pituitary homogenate (CPH) on the induction of spawning in Hoplias ...
Everton Rodolfo Behr, Bernardo Baldisserotto, Walter Garcia Parra, Deodoro Atlante Brandão, Zolst Herke   +4 more
doaj   +1 more source

Indigenous resurgence in the Blue Economy: Relational values to guide kelp mariculture

People and Nature, EarlyView.
Abstract Decisions about how to use ocean spaces are increasingly attuned to issues of social equity, environmental sustainability and climate resilience, yet often bypass local governance, knowledge, values and thus objectives. To inform future decisions about kelp harvest and mariculture activities on the west coast of Canada, we co‐designed research
Sarah B. Gutzmann, Charles Humchitt, Kevin Kowalchuk, Dorothy Hunt, Alyssa Allchurch, Andrés Cisneros‐Montemayor, Anne K. Salomon   +6 more
wiley   +1 more source