Fróðskaparrit - 01.01.1957, Page 43

Fróðskaparrit - 01.01.1957, Page 43
Løgin fyribrigdi hjá hvali 49 øðrumegin, hinumegin bert til táknahvalin. Nú vóru lík* indi til at fáa blóð úr fostrinum hjá grindahvali, sum er tannhvalur, og í tí vóru vit førir at finna bæði fruktsuk* ur og vínberjasukur. Síðan eru frá Azorunum fingnir sýnislutir av blóði úr augustafostri (eisini tentur hvalur), og vit vita nú, at eisini í tí er fruktsukur. So statt er komið í ljósmála, at í blóði úr fostri hjá øllum hvali (bæði tannhvali og táknahvali), sum higartil er kannaður, er fruktsukur. Hvat ið fruktsukurið í blóðinum er til, vita vit í løtuni einki um. Vónandi er henda frágreiðing um nakrar av atvoldunum til, at vit á sumri 1957 vitjaðu Føroyar áhugaverd. Her er kanska vert at nevna, at umframt at gera vísindaliga roynd, sum vit fingu gagn úr, høvdu vit eitt frálíkt upp* livilsi; og so stórtøkið var samarbeiðið, og hjálpin frá nógvum góðum Føroyingum, frá landsstýri og ríkisum* boði so dygg, at ilt er at nevna nøvn her. SUMMARY Prenatal growth rates show species differences. Blue whales grow fastest and other whales slower. All Primates grow at the same rate. The Grind whale which is our slowest growing Mammal growes only little faster than Primates. The growth rates are genetically determined. The pituitary growth hormone is important for the prenatal growth, which also needs carbohydrate. All mammalian foetuses have a spare carbohydrate unavailable to the mother. Whales like Ungulates have fructose. LETTERPRESS TO FIGURES Fig. 1. Growth in weight of the foetal sheep. Fig. 2. Growth in length of the foetal sheep, length being the mean of two measurements from the frontal boss (B) to the rump (R), one direct by the shortest line and the other cirkumferential along the back of the head and trunk. 4
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