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Aggression supersedes individual oxygen demand to drive group air-breathing in a social catfish ArchiMer
Killen, Shaun S.; Esbaugh, Andrew J.; Martins, Nicolas F.; Rantin, F. Tadeu; Mckenzie, David J..
1. Group-living is widespread among animals and comes with numerous costs and benefits. To date, research examining group-living has focused on trade-offs surrounding foraging, while other forms of resource acquisition have been largely overlooked. 2. Air-breathing has evolved in many fish lineages, allowing animals to obtain oxygen in hypoxic aquatic environments. Breathing air increases the threat of predation, so some species perform group air-breathing, to reduce individual risk. Within species, individual air-breathing can be influenced by metabolic rate as well as personality, but the mechanisms of group air-breathing remain unexplored. It is conceivable that keystone individuals with high metabolic demand or intrinsic tendency to breathe air may...
Tipo: Text Palavras-chave: Air-breathing fish; Ecophysiology; Group-living; Keystone individuals; Metabolic rate; Social behaviour.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00417/52831/78979.pdf
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Behaviors associated with cows more prone to produce milk with reduced stability to ethanol test due to feeding restriction Ciência Rural
Stumpf,Marcelo Tempel; Fischer,Vivian; Kolling,Giovani Jacob; Silva,Alessandra Ventura da; Ribeiro,Maria Edi Rocha; Santos,Carolina da Silva dos.
ABSTRACT: The experiment was carried out to identify changes in the behaviorr of lactating cows induced by severe feeding restriction and further refeeding that could serve as facilitators for the visual identification of cows more prone to produce milk with reduced stability. Twelve cows were separated into two groups: Control: full diet supply; Restriction: 50% of the full diet. Feed restriction lasted seven days (Period 1), with posterior supply of full diet for seven days (Period 2) for all treatments. Behavior was observed on the first and fifth days in each period from 08h40 to 19h00. Ingestive and social behavior were monitored. Cortisol assessed stress levels. Analysis of variance and multifactorial statistical analyzes were performed. Adequate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bos taurus taurus; Feeding restriction; Ingestive behaviour; Milk stability; Social behaviour.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901662
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Behaviour of captive Ostrich chicks from 10 days to 5 months of age R. Bras. Zootec.
Amado,Marina Freire; Xavier,Diego Batista; Boere,Vanner; Torres-Pereira,Carla; McManus,Concepta; Bernal,Francisco Ernesto Moreno.
The behaviour of ostrich chicks bred in captivity was studied by using groups with 30 birds in five age groups: from 10 to 40 days of age; from 41 to 60 days of age; from 61 to 90 days of age; from 91 to 120 days of age and from 121 to 150 days of age. Six birds at each age were ringed around one of their feet and observed for four consecutive days for eight hours daily in three periods (in the morning, at noon and in the afternoon), following the "one-zero" method for sampling. The order for observation of behaviour of the six selected birds was performed randomly at every thirty minutes, totalling 16 periods or 80 minutes/bird/day. Fourteen types of behaviour were observed. There were differences among ages for behaviour like standing, walking, running,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agonistic behaviour; Breeding; Ethogram; Social behaviour; Struthio camelus; Use of time.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700029
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Behavioural studies on eriophyoid mites: an overview. Repositório Alice
MICHALSKA, K.; SKORACKA, A.; FERREIRA, D. N. M.; AMRINE, J. W..
Tipo: Separatas Palavras-chave: Eriophyoidea; Aerial dispersal; Antipredator behaviour; Host-acceptance behaviour; Reproductive behaviour; Social behaviour.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/578176
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Faciliter l’adoption d’interventions de securite alimentaire dans le secteur des aliments de rue et dans les champs AgEcon
Karg, Hanna; Drechsel, Pay; Amoah, Philip; Jeitler, Regina.
This chapter discusses the implementation challenges of the WHO Guidelines on safe wastewater use pertaining to the adoption of the so-called ‘post-treatment’ or ‘non-treatment’ options, like safer irrigation practices or appropriate vegetablewashing in kitchens. Due to limited risk awareness and immediate benefits of wastewater irrigation, it is unlikely that a broad adoption of recommended practices will automatically follow revised policies or any educational campaign and training. Most of the recommended practices do not only require behaviourchange but might also increase operational costs. In such a situation, significant efforts are required to explore how conventional and/or social marketing can support the desired behaviour-change towards the...
Tipo: Book Palavras-chave: Food safety; Restaurants; Public health; Social behaviour; Wastewater irrigation; Vegetables; Guidelines; West Africa; Ghana; Agricultural and Food Policy; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/124376
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INTERACTIONS BETWEEN CALVES OF AMAZONIAN MANATEES IN PERU: A STUDY CASE Acta biol.Colomb.
ARÉVALO-SANDI,Alexander Roldán; CASTELBLANCO-MARTÍNEZ,Delma Nataly.
Trichechus inunguis is an endemic species of the Amazon, which inhabits mainly in lakes and calm rivers. The objective of this study case was to describe the social behaviour of two female-orphaned calves, of T. inunguis in captivity. They were kept in the same pool at the facilities of the Amazon Rescue Center (ARC, Iquitos, Peruvian Amazon). Between February and October 2011, the individuals were observed during day and night times, completing 352 hours of observation. Through ad libitum observation of the individuals, we developed a catalogue of social behaviors that includes descriptions of 93 behaviours, classified in eight behavioural categories. The frequency of behaviours was assessed by instantaneous sampling (for states) and continuous recording...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endangered species; Ethology; Social behaviour; Trichechus inunguis.
Ano: 2016 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2016000200004
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Social dynamics obscure the effect of temperature on air breathing in Corydoras catfish ArchiMer
Pineda, Mar; Aragao, Isabel; Mckenzie, David; Killen, Shaun S..
In some fishes, the ability to breathe air has evolved to overcome constraints in hypoxic environments but comes at a cost of increased predation. To reduce this risk, some species perform group air breathing. Temperature may also affect the frequency of air breathing in fishes, but this topic has received relatively little research attention. This study examined how acclimation temperature and acute exposure to hypoxia affected the air-breathing behaviour of a social catfish, the bronze corydoras Corydoras aeneus, and aimed to determine whether individual oxygen demand influenced the behaviour of entire groups. Groups of seven fish were observed in an arena to measure air-breathing frequency of individuals and consequent group air-breathing behaviour,...
Tipo: Text Palavras-chave: Air-breathing fish; Environmental stress; Metabolic rate; Oxygen; Social behaviour.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00661/77271/78705.pdf
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Teat order affects postweaning behaviour in piglets Ciência Rural
Sommavilla,Roberta; Costa,Osmar Antonio Dalla; Honorato,Luciana Aparecida; Cardoso,Clarissa Silva; Hötzel,Maria José.
The objective of this study was to investigate if piglets that suck anterior teats differ from the others in the litter in birth weight, if they have higher growth rate during lactation, and if this affects behaviour and post-weaning weight gain, when piglets change to a solid diet. For this, the teat order of 24 litters was determined during suckling. Piglets were weaned on the 28thday of age, and 24 groups were formed, composed of one piglet that sucked on the first two pairs of teats (AT) and three piglets that sucked on the other teats (OT). Even though weight at birth did not vary according to teat order, weight gain at weaning differed between the groups (AT: 6.64, S.E. 0.20kg, OT: 5.73, S.E. 0.13kg; P<0.001). After weaning, AT piglets spent more...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Weaning; Social behaviour; Vocalization; Feeding; Stress.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901660
Registros recuperados: 8
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