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Reproduction animal selective

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https://www.readbyqxmd.com/read/28543867/an-age-dependent-fitness-cost-of-migration-old-trans-saharan-migrating-spoonbills-breed-later-than-those-staying-in-europe-and-late-breeders-have-lower-recruitment
#1
Tamar Lok, Linde Veldhoen, Otto Overdijk, Joost M Tinbergen, Theunis Piersma
Migration is a widespread phenomenon in the animal kingdom. On the basis of the considerable variation that exists between and within species, and even within populations, we may be able to infer the (age- and sex-specific) ecological trade-offs and constraints moulding migration systems from assessments of fitness associated with migration and wintering in different areas. During three consecutive breeding seasons, we compared the reproductive performance (timing of breeding, breeding success, chick body condition and post-fledging survival) of Eurasian spoonbills Platalea leucorodia that breed at a single breeding site in The Netherlands, but migrate different distances (ca...
May 25, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28541153/evaluation-of-the-effects-of-a-4-7-mg-deslorelin-acetate-implant-on-egg-laying-in-cockatiels-nymphicus-hollandicus
#2
Noémie M Summa, David Sanchez-Migallon Guzman, Emma L Wils-Plotz, Nerisa E Riedl, Philip H Kass, Michelle G Hawkins
OBJECTIVE To evaluate effects of administration of a 4.7-mg deslorelin acetate implant on egg laying in healthy cockatiels (Nymphicus hollandicus). ANIMALS 52 cockatiels. PROCEDURES 26 breeding pairs (a female and its respective male in each pair) were selected on the basis of their history of egg laying. Female birds were sedated and received a 4.7-mg deslorelin acetate implant (n = 13) or placebo implant (13) in the subcutaneous tissues between the scapulae. Male and female birds of each breeding pair were placed in separate but adjacent cages...
June 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28521850/differential-gene-expression-in-porcine-oviduct-during-the-oestrous-cycle
#3
O S Acuña, M Avilés, R López-Úbeda, A Guillén-Martínez, C Soriano-Úbeda, A Torrecillas, P Coy, M J Izquierdo-Rico
The oviduct undergoes changes under the influence of steroid hormones during the oestrous cycle. However, the molecular mechanisms underlying oviductal regulation are not fully understood. The aim of the present study was to identify the gene expression profile of the porcine oviduct in different stages of the cycle using microarray technology. A systematic study was performed on animals at four different stage: prepubertal gilts, and sows in the preovulatory, postovulatory and luteal phase of the oestrous cycle...
May 19, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28503265/the-effects-of-caffeine-on-the-long-bones-and-testes-in-immature-and-young-adult-rats
#4
Yoojin Kwak, Hyeonhae Choi, Jaesook Roh
This study was to evaluate the age-dependent effects of caffeine exposure on the long bones and reproductive organs using male rats. A total of 15 immature male rats and 15 young adult male rats were allocated randomly to three groups: a control group and two groups fed caffeine with 120 and 180 mg/kg/day for 4 weeks. Exposure to caffeine at either dose significantly reduced body weight gain; a proportional reduction in muscle and fat mass in immature animals, whereas a selective reduction in fat mass with relatively preserved muscle mass in young adult animals...
April 2017: Toxicological Research
https://www.readbyqxmd.com/read/28500056/a-pathway-centered-analysis-of-pig-domestication-and-breeding-in-eurasia
#5
Jordi Leno-Colorado, Nick Hudson, Antonio Reverter, Miguel Pérez-Enciso
Ascertaining the molecular and physiological basis of domestication and breeding is an active area of research. Due to the current wide distribution of its wild ancestor, the wild boar, the pig (Sus scrofa) is an excellent model to study these processes, which occurred independently in East Asia and Europe ca. 9,000 years ago. Analyzing genome variability patterns in terms of metabolic pathways is attractive since it considers the impact of interrelated functions of genes, in contrast to genome-wide scans that treat genes or genome-windows in isolation...
May 12, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28472631/perinatal-selective-serotonin-reuptake-inhibitor-medication-ssri-effects-on-social-behaviors-neurodevelopment-and-the-epigenome
#6
REVIEW
Mary Gemmel, Eszter Bögi, Christina Ragan, Mariah Hazlett, Michal Dubovicky, Daniel L van den Hove, Tim F Oberlander, Thierry D Charlier, Jodi L Pawluski
Recent research has linked early life exposure to selective serotonin reuptake inhibitor medications (SSRIs) to modifications of social behaviors in children. Serotonin is a key regulator of neurodevelopment, social behaviors and mental health, and with the growing use of SSRIs to treat maternal affective disorders during the perinatal period, questions have been raised about the benefits and risks of SSRI exposure on the developing child. This review will highlight how perinatal SSRIs affect maternal care and neurodevelopmental outcomes related to social affiliative behaviors in offspring; such as play behaviors, social interactions, reproductive behaviors, and maternal care of the next generation...
May 1, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28472189/habitat-specific-differences-alter-traditional-biogeographic-patterns-of-life-history-in-a-climate-change-induced-range-expansion
#7
Megan E Riley, Blaine D Griffen
Range shifts and expansions resulting from global climate change have the potential to create novel communities with unique plant-animal interactions. Organisms expanding their range into novel biotic and abiotic environments may encounter selection pressures that alter traditional biogeographic patterns of life history traits. Here, we used field surveys to examine latitudinal patterns of life history traits in a broadly distributed ectotherm (mangrove tree crab Aratus pisonii) that has recently experienced a climate change-induced range expansion into a novel habitat type...
2017: PloS One
https://www.readbyqxmd.com/read/28460751/a-retrospective-cohort-study-estimating-the-individual-aleutian-disease-progress-in-female-mink-using-a-vp2-elisa-and-its-association-to-reproductive-performance
#8
Anna-Maria Andersson, Ann-Kristin Nyman, Per Wallgren
Aleutian Disease (AD) is an important disease in mink characterized by a persistent chronic infection typically causing a progressive disease with symptoms such as weight loss, polydipsia, polyuria, reduced reproductive performance and increased herd mortality. Due to lack of success in eradicating AD by stamping out, disease control programs based on estimating the disease progression have been implemented and used in the selection of future breeding animals. The aim of this project was to evaluate the association between the reproductive performance of female mink (expressed as being barren or not and litter size of non-barren females) and the individual AD status (defined as diseased or non-diseased based on the OD450 value in a dried blood spot samples (DBS) VP2 ELISA) while controlling for age and color type...
May 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28460667/postpartum-hormone-and-energy-profiles-and-their-influence-on-the-resumption-of-ovarian-cyclicity-in-curraleiro-p%C3%A3-duro-cows
#9
Heitor Castro Alves Teixeira, Eleonora Araújo Barbosa, Paula Lorenna Grangeira Souto, Arthur da Silva Mariante, Alexandre Floriani Ramos
The objective of this study was to evaluate hormone and energy profiles in the postpartum period and to correlate these profiles with the resumption of ovarian cyclicity, as well as characterizing the postpartum short estrous cycle of Curraleiro Pé-Duro cows. Twelve Curraleiro Pé-Duro cows were examined via rectal palpation and ultrasound at 10 days postpartum, and subsequently examined daily to evaluate the resumption of ovarian cyclicity as well as every five days in order to evaluate uterine involution...
June 2017: Theriogenology
https://www.readbyqxmd.com/read/28453563/reproductive-success-is-energetically-linked-to-foraging-efficiency-in-antarctic-fur-seals
#10
Tiphaine Jeanniard-du-Dot, Andrew W Trites, John P Y Arnould, Christophe Guinet
The efficiency with which individuals extract energy from their environment defines their survival and reproductive success, and thus their selective contribution to the population. Individuals that forage more efficiently (i.e., when energy gained exceeds energy expended) are likely to be more successful at raising viable offspring than individuals that forage less efficiently. Our goal was to test this prediction in large long-lived mammals under free-ranging conditions. To do so, we equipped 20 lactating Antarctic fur seals (Arctocephalus gazella) breeding on Kerguelen Island in the Southern Ocean with tags that recorded GPS locations, depth and tri-axial acceleration to determine at-sea behaviours and detailed time-activity budgets during their foraging trips...
2017: PloS One
https://www.readbyqxmd.com/read/28450759/sex-in-murky-waters-algal-induced-turbidity-increases-sexual-selection-in-pipefish
#11
Josefin Sundin, Tonje Aronsen, Gunilla Rosenqvist, Anders Berglund
ABSTRACT: Algal-induced turbidity has been shown to alter several important aspects of reproduction and sexual selection. However, while turbidity has been shown to negatively affect reproduction and sexually selected traits in some species, it may instead enhance reproductive success in others, implying that the impact of eutrophication is far more complex than originally believed. In this study, we aimed to provide more insight into these inconsistent findings. We used molecular tools to investigate the impact of algal turbidity on reproductive success and sexual selection on males in controlled laboratory experiments, allowing mate choice, mating competition, and mate encounter rates to affect reproduction...
2017: Behavioral Ecology and Sociobiology
https://www.readbyqxmd.com/read/28443181/development-of-a-test-method-for-the-evaluation-of-dna-damage-in-mouse-spermatogonial-stem-cells
#12
Hye Lyun Jeon, Jung-Sun Yi, Tae Sung Kim, Youkyung Oh, Hye Jeong Lee, Minseong Lee, Jin Seok Bang, Kinarm Ko, Il Young Ahn, Kyungyuk Ko, Joohwan Kim, Hye-Kyung Park, Jong Kwon Lee, Soo Jung Sohn
Although alternative test methods based on the 3Rs (Replacement, Reduction, Refinement) are being developed to replace animal testing in reproductive and developmental toxicology, they are still in an early stage. Consequently, we aimed to develop alternative test methods in male animals using mouse spermatogonial stem cells (mSSCs). Here, we modified the OECD TG 489 and optimized the in vitro comet assay in our previous study. This study aimed to verify the validity of in vitro tests involving mSSCs by comparing their results with those of in vivo tests using C57BL/6 mice by gavage...
April 2017: Toxicological Research
https://www.readbyqxmd.com/read/28441946/the-protein-subunit-of-telomerase-displays-patterns-of-dynamic-evolution-and-conservation-across-different-metazoan-taxa
#13
Alvina G Lai, Natalia Pouchkina-Stantcheva, Alessia Di Donfrancesco, Gerda Kildisiute, Sounak Sahu, A Aziz Aboobaker
BACKGROUND: Most animals employ telomerase, which consists of a catalytic subunit known as the telomerase reverse transcriptase (TERT) and an RNA template, to maintain telomere ends. Given the importance of TERT and telomere biology in core metazoan life history traits, like ageing and the control of somatic cell proliferation, we hypothesised that TERT would have patterns of sequence and regulatory evolution reflecting the diverse life histories across the Animal Kingdom. RESULTS: We performed a complete investigation of the evolutionary history of TERT across animals...
April 26, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28435192/effect-of-peripartum-nutritional-management-on-plasma-profile-of-steroid-hormones-metabolites-and-postpartum-fertility-in-buffaloes
#14
R M Kalasariya, A J Dhami, K K Hadiya, D N Borkhatariya, J A Patel
AIM: The aim of this study was to evaluate the influence of peripartum protein and minerals supplementation on plasma profile of steroid hormones, metabolites, and fertility in rural buffaloes. MATERIAL AND METHODS: A total of 85 advanced pregnant (~8 months) pluriparous buffaloes selected at farmers' doorstep in three tribal villages of Middle Gujarat were randomly divided into two groups, viz., control (n=45) and nutrients treatment (40). The buffaloes of treatment group (n=40), in addition to farmers feeding schedule/control, received daily 1...
March 2017: Veterinary World
https://www.readbyqxmd.com/read/28434584/how-does-sex-matter-behavior-stress-and-animal-models-of-neurobehavioral-disorders
#15
REVIEW
Paola Palanza, Stefano Parmigiani
Many aspects of brain functioning exhibit important sex differences that affect behavior, mental health and mental disorders. However, most translational neuroscience research related to animal models of neurobehavioral disorders are carried out in male animals only. Based on published data from our laboratory on the House mouse, we discuss the following issues: (1) sex differences in social behavior of wild-derived mice; (2) artificial selection of laboratory strains and its consequences on social and reproductive competition; (3) sex-dependent effects of common experimental procedures; (4) differential effects of developmental events: the case of endocrine disruption; (5) implications for female models of stress and neurobehavioral disorders...
May 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28432701/ovarian-follicle-development-and-genital-tract-characteristics-in-different-birthweight-gilts-at-150%C3%A2-days-of-age
#16
Frcl Almeida, Aln Alvarenga Dias, L P Moreira, Atl Fiúza, H Chiarini-Garcia
In the last decades, selection for improved prolificacy has resulted in higher litter sizes and has thereby increased the proportion of low birthweight (LW) piglets. It is well documented that LW piglets have lower growth performance, muscle accretion and poor carcass quality. However, little is known about the relations of birthweight with subsequent reproductive performance in gilts. This study investigated the effects of birthweight on reproductive tract and ovarian follicle development in 150-day-old gilts...
April 22, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28431764/seasonal-monitoring-of-blue-mussel-mytilus-spp-populations-in-a-harbor-area-a-focus-on-responses-to-environmental-factors-and-chronic-contamination
#17
C Lacroix, E Duvieilbourg, N Guillou, J Guyomarch, C Bassoulet, D Moraga, G Chapalain, M Auffret
Coastal waters corresponding to macrotidal systems are among the most variable marine biotopes. Sessile animals as bivalve mollusks may however be found forming intertidal beds at high densities, as allowed by full adaptation to local conditions. A better knowledge of adaptive responses to environmental factors is required to foresee possible adverse effects of global change. At the sub-cellular level, transcriptional responses are among the earliest signals of environmental disturbances and they can reveal subtle and meaningful changes in organism exposed to stress...
April 12, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28428805/edible-dormice-glis-glis-avoid-areas-with-a-high-density-of-their-preferred-food-plant-the-european-beech
#18
Jessica S Cornils, Franz Hoelzl, Birgit Rotter, Claudia Bieber, Thomas Ruf
BACKGROUND: Numerous species, especially among rodents, are strongly affected by the availability of pulsed resources. The intermittent production of large seed crops in northern hemisphere tree species (e.g., beech Fagus spec.,oak Quercus spec., pine trees Pinus spec.) are prime examples of these resource pulses. Adult edible dormice are highly dependent on high energy seeds to maximize their reproductive output. For juvenile dormice the energy rich food is important to grow and fatten in a very short time period prior to hibernation...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28422140/the-evolutionary-history-of-bears-is-characterized-by-gene-flow-across-species
#19
Vikas Kumar, Fritjof Lammers, Tobias Bidon, Markus Pfenninger, Lydia Kolter, Maria A Nilsson, Axel Janke
Bears are iconic mammals with a complex evolutionary history. Natural bear hybrids and studies of few nuclear genes indicate that gene flow among bears may be more common than expected and not limited to polar and brown bears. Here we present a genome analysis of the bear family with representatives of all living species. Phylogenomic analyses of 869 mega base pairs divided into 18,621 genome fragments yielded a well-resolved coalescent species tree despite signals for extensive gene flow across species. However, genome analyses using different statistical methods show that gene flow is not limited to closely related species pairs...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28414086/deadbeats-or-losers-discretionary-male-parental-investment-can-make-females-less-choosy
#20
Frazer Meacham, Thomas Getty
Two of the most important reproductive decisions that animals face are how to choose mates and how to invest in offspring. In species where both males and females provide offspring care, these selection pressures will often be reciprocally intertwined: mate preferences may depend on parental investment patterns while parental investment patterns may depend on mate preferences. We describe and analyze a mathematical model of this interaction, in which females can choose amongst males who have high attractiveness or low attractiveness, while males can decide whether to provide offspring care...
April 13, 2017: Journal of Theoretical Biology
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