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Postprandial thermophily in reptiles
STUCHLOVÁ, Klára
Many ectothermic vertebrates, including some species of reptiles, raise their preferred body temperature after feeding, termed postprandial thermophily. Postprandial thermophily enable the animal to digest its meal at higher rate. However, most studies documenting this phenomenon have relied upon laboratory thermal gradients, with grossly oversimplify an animal's environment and the thermal gradient data may sometimes be misleading. On the other hand, in field or field enclosure, thermoregulation is just one concern among many (such as reproduction, predator avoidance, foraging) and the current biotic and abiotic factors may influence actual thermoregulation behaviour of the specimen. So there is the need for caution in interpreting results. Future research into the thermal ecology of ectotherms should take special care in the design of experiments and methodology. Study animals should be given microhabitats that approximate those they prefer in the wild.
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Influence of selected factors on reproduction of fish Ancistrus multispinnis
BARDOUNOVÁ, Alena
The white-girdled bristlenose catfish (Ancistrus multispinnis) is found in South America in the Amazon Basin, especially along the bed of flowing bodies of water. The male can be recognised from the long, thick, bristling tentacles and odontodes on the head and cheek. Females either have no tentacles or short, thin ones. Ancistrus multispinnis is omnivorous but primarily consumes plant matter. It is a much sought-after fish and it is therefore important to determine the best form of breeding and rearing. The monitoring required for compilation of the research project was performed in the aquarium room at the Department of Biological Sciences from March 2011 to March 2012. Normal and albino variants of Ancistrus multispinnis were used for reproduction. The tested fish were placed in 50 litre tanks where they then reproduced. A WTW meter, column (cation exchanger) and demineralisation filter were used for measurement of the values and for water treatment. The aim of the research project was to determine the influence of a selected form of feeding and water temperature on successful spawning of Ancistrus multispinnis. The findings reveal that, for successful spawning and breeding of these fish, the best form of feeding is to administer pellets specially designed for Ancistri, boiled nettles or lettuce leaves, finely shredded beef heart and even the occasional addition of pond plankton. The ideal water-temperature was revealed to be from 24-26 °C, pH 7-8, conductivity approx. 230 ?S/cm and oxygen content approx. 8.00 mg.l-1.
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Noise in the vicinity of farms for rearing calves.
ŠÁMAL, Jiří
The work deals with noise in the vicinity of farms for rearing calves. In this work addresses the size of the noise that affects animals and humans around them. Data collection were two sound level meter, which we recorded the noise. Values are summarized in graphs. From graphs is clear, that there is overturned hygiene standards. This is reason, why there is no need to propose changes.
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Utilization of cereals on suplementary carp feeding on Ponds Fishery Lomnice nad Lužnicí
EISERT, Zdeněk
Theme of my Diploma work refers about possibility of feeding up the common carp with the cereal food in the ponds. Research was monitor on 4 ponds in Naděje ponds system. The ponds have 2,4 ha together. Three of them were used for research and fourth pond was for control. This control pound had only a natural food. During the research was every year plant into the ponds 363 carps type (K 3) for 1 ha and after fish out was this sort K 4. For the research were very pilot fish outs. Fish out carp were for weight, length of the body and perimeter of the body monitoring. This data was use for a statistics evaluation. Feeding run 3 days in a week (Monday, Wednesday, Friday) in a day ration 2 % of the fish weight in a pound.
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