Search for dissertations about: "sexual maturation"
Showing result 1 - 5 of 27 swedish dissertations containing the words sexual maturation.
-
1. Regulation of Leptin by Sexual Maturation and Energy Status in Male Atlantic Salmon (Salmo salar L.) Parr
Abstract : Leptin is a peripheral adiposity signal and a key hormone in energy balance regulation in mammals, acting as a link between nutritional status and the endocrine reproductive axis. If this is also the role of leptin in fish is not fully understood. READ MORE
-
2. Role of leptin in energy balance and sexual maturation in male Atlantic salmo (Salmo salar L.) parr
Abstract : .... READ MORE
-
3. Growth hormone and somatolactin function during sexual maturation of female Atlantic salmon
Abstract : Background and aims: The growth hormone-insulin-like growth factor I (GH-IGF-I) system is known to act during sexual maturation of female salmonids, but the specific roles are not known. Somatolactin (SL) is a pituitary hormone closely related to GH and is only found in fish. In some species, including salmonids, there are two forms, SLa and SLß. READ MORE
-
4. Stress Coping Strategies in Brown Trout (Salmo Trutta): Ecological Significance and Effects of Sea-Ranching
Abstract : Two distinct stress coping strategies, proactive and reactive, have been stated in various animal studies, each associated with a set of behavioural and physiological characteristics. In a given challenging situation, proactive animals show more aggression, a higher general activity and a predominant sympathetic reaction. READ MORE
-
5. Speciation - What Can be Learned from a Flycatcher Hybrid Zone?
Abstract : Studies of hybrid zones offer important insights into the process of speciation. Much of the knowledge to be gained is dependent on an accurate estimation of the strength of pre- and post-zygotic isolation between hybridizing taxa. My results demonstrate that hybridization can variously affect different components of fitness. READ MORE