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Memorial University - Electronic Theses and Dissertations 3
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Document Description
TitleA field study of territorial and reproductive behaviour of the cunner, Tautogolabrus adspersus, in Conception Bay, Newfoundland
AuthorPottle, Robert Arthur, 1952-
DescriptionThesis (M. Sc.)-- Memorial University of Newfoundland, 1979. Biology
Pagination104 leaves
SubjectBluefish; Cunner;
DegreeM. Sc.
Degree GrantorMemorial University of Newfoundland. Dept. of Biology
NotesBibliography: leaves 92-95.
AbstractTerritorial and reproductive behavior in the cunner, Tautoglabrus adspersus ( Walbaum ), were observed in Conception Bay, Newfoundland. Cunners are active from May until November and spend the winter months in a state of torpor in the substrate. Males more than 6 years old establish territories in early June. Territories are defended outside the mid-summer spawning season. Both territorial arid nonterritorial males of 150 mm TL acquire nuptial colouration between emergence from overwintering torpor and the start of the spawning season. Nonterritorial males are vigorously excluded from territories by the resident males and appear to contribute little to the reproductive effort of the population. Territorial females are found in the peripheral areas of some males' territories and-exhibit aggressive behavior toward other's females. Both territorial and nonterritorial females pair spawn with territorial, males. Fish of both sexes are capable of multiple spawns. Group spawning by nonterritorial cunners was not observed. The function of territory defense in T. adspersus is discussed.
Resource TypeElectronic thesis or dissertation
FormatImage/jpg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier75009199
RightsThe author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(22.70 MB) --
CONTENTdm file name143654.cpd