Results 41 to 50 of about 27,048 (222)
Biology, 2021 Studies of suites of correlated behavioral traits (i.e., behavioral syndromes) aid in understanding the adaptive importance of behavioral evolution. Behavioral syndromes may be evolutionarily constrained, preventing behaviors from evolving independently,
James J. Muraco +3 more
doaj +1 more source
بررسی میزان آلودگی قارچی ماهیان زینتی آب شیرین سطح شهر گرگان [PDF]
مجله بهرهبرداری و پرورش آبزیان, 2020 تکثیر، پرورش و تجارت ماهیان زینتی امروزه یکی از حوزه های جذب برای سرمایه گذاری و تحقیق به شمار می رود. این بررسی بمدت یکسال بصورت فصلی در سال 1395 انجام گرفت.
بهروز قره وی +3 more
doaj +1 more source
Evidence for inbreeding depression in a species with limited opportunity for maternal effects [PDF]
, 2015 It is often assumed that mating with close relatives reduces offspring fitness. In such cases, reduced offspring fitness may arise from inbreeding depression (i.e., genetic effects of elevated homozygosity) or from post-mating maternal investment.
Head, Megan L. +2 more
core +1 more source
Parasites alter host community structure in a natural experiment
Journal of Animal Ecology, EarlyView.Parasites can alter host communities in complex ways, but empirical data from natural systems are rare. This study decomposes the effects of an invasive parasite on natural communities of fish in Trinidad, revealing the direct, indirect, and context dependence of the invasion on host demographic rates and community structure.
Tomos Potter +5 more
wiley +1 more source
HYPOPHYSECTOMIE DE POECILIA RETICULATA (POISSON TÉLÉOSTÉEN) [PDF]
Annales de Biologie Animale Biochimie Biophysique, 1968 Une technique d'hypophysectomie par voie operculaire particulièrement simple et rapide, est décrite chez le Guppy Poecalia reticulata. La pénicilline administrée pendant la cicatrisation diminue la mortalité postoperatoire.A quick easy surgical technique of hypophysectomy using opercular approach is described in the Guppy Poecilia reticulata.
Jalabert, Bernard +2 more
openaire +2 more sources
Frontiers in Physiology, 2021 The capacity to compensate for environmental change determines population persistence and biogeography. In ectothermic organisms, performance at different temperatures can be strongly affected by temperatures experienced during early development.
Kate L. Laskowski +7 more
doaj +1 more source
A further cost for the sicker sex? Evidence for male-biased parasite-induced vulnerability to predation [PDF]
, 2016 Males are typically the sicker sex. Data from multiple taxa indicate that they are more likely to be infected with parasites, and are less ‘tolerant’, or less able to mitigate the fitness costs of a given infection, than females.
Adelman +58 more
core +3 more sources
Vectors and Vector‐Borne Diseases: Biology, Epidemiology and Integrated Control Strategies
Journal of Applied Entomology, EarlyView.ABSTRACT Vector‐Borne Diseases (VBDs), transmitted by arthropods such as mosquitoes, ticks, fleas and sandflies, represent a significant threat to global health. These diseases can be caused by a variety of pathogens, including bacteria, viruses, protozoa, and helminths.
Roberta Rinaldi +4 more
wiley +1 more source
Revista do Instituto de Medicina Tropical de São Paulo, 2010 Pleurolophocercous cercariae emerged from naturally infected Melanoides tuberculata from Minas Gerais State, Brazil, were used to perform experimental infection of laboratory-reared Poecilia reticulata.
Hudson Alves Pinto, Alan Lane de Melo
doaj +1 more source
A Tetraploid Amazon Molly, Poecilia formosa [PDF]
Journal of Heredity, 2008 Polyploidization is thought to be an important driving force in evolution as it increases the genetic material on which mutation and selection can act. In the Amazon molly, Poecilia formosa, triploid genotypes can be found in the field and frequently arise from diploid breeding stocks, a tetraploid individual, however, was so far never documented. Here,
Kathrin P, Lampert +3 more
openaire +2 more sources