Allometrical studies in the brain of cyclostomes

The brain weight - body weight relation was studied in 91 specimens of the order Cyclostomata (69 Petromyzonoidea, 22 Myxinoidea) and compared to data from other vertebrates. The interspecific slope of cyclostomes differs from that of other vertebrates (a = 0.23 in petromyzonts, a = 0.41 in myxonoid...

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Bibliographic Details
Published inJournal fur Hirnforschung Vol. 24; no. 5; p. 545
Main Authors Ebinger, P, Wächtler, K, Stähler, S
Format Journal Article
LanguageEnglish
Published Germany 1983
Subjects
Animals
Body Weight
Brain - anatomy & histology
Diencephalon - anatomy & histology
Fishes - anatomy & histology
Medulla Oblongata - anatomy & histology
Mesencephalon - anatomy & histology
Organ Size
Species Specificity
Telencephalon - anatomy & histology
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Summary:The brain weight - body weight relation was studied in 91 specimens of the order Cyclostomata (69 Petromyzonoidea, 22 Myxinoidea) and compared to data from other vertebrates. The interspecific slope of cyclostomes differs from that of other vertebrates (a = 0.23 in petromyzonts, a = 0.41 in myxonoids). Differences observed in the relationship of brain parts to body weight in the two suborders were interpreted as due to sense organ bound specializations. In a comparative diagram of the brain weight - body weight relation in vertebrates the cyclostomes take the lowest position.
ISSN:0021-8359