Memorial University DAI: A field study of territorial and reproductive behaviour of the cunner, Tautogolabrus adspersus, in Conception Bay, Newfoundland

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Title	A field study of territorial and reproductive behaviour of the cunner, Tautogolabrus adspersus, in Conception Bay, Newfoundland
Author	Pottle, Robert Arthur, 1952-
Description	Thesis (M. Sc.)-- Memorial University of Newfoundland, 1979. Biology
Date	1978.
Pagination	104 leaves
Subject	Bluefish; Cunner;
Degree	M. Sc.
Degree Grantor	Memorial University of Newfoundland. Dept. of Biology
Discipline	Biology
Language	eng
Notes	Bibliography: leaves 92-95.
Abstract	Territorial 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.
Type	Text
Resource Type	Electronic thesis or dissertation
Format	Image/jpg; Application/pdf
Source	Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier	75009199
Rights	The 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.
Collection	Electronic Theses and Dissertations
Scanning Status	Completed
PDF File	(22.70 MB) -- http://collections.mun.ca/PDFs/theses/Pottle_RobertArthur.pdf
CONTENTdm file name	143654.cpd