Skip to main content Accessibility help
×
×
Home

Age, Growth and Sex Ratio of the Azorean Rock-Pool Blenny, Parablennius Sanguinolentus Parvicornis

  • Ricardo Serrão Santos (a1), Richard D. M. Nash (a2) and Stephen J. Hawkins (a2)

Extract

The age and population structure of Parablennius sanguinolentus parvicornis (Valenciennes) (Pisces: Blenniidae) from the Azores have been studied. Total length and weight relationships are given for each sex. Age study was based on otoliths readings. The von Bertalanffy growth function was applied to describe the growth in total length with age. At the end of the first year mean (±SD) total length was significantly different in males (7.1 ±1.5 cm) and females (6.1 ±1.2 cm). One-year-old males participate in reproduction as satellites, whereas females do not. The implications of this in early growth rate of the males is discussed. During the two most important months of the reproductive season (i.e. June and July), the sex ratio was significantly biased towards males, particularly in the larger size classes.

Copyright

References

Hide All
Almada, V.C. & Santos, R.S., 1995. Parental care in the rocky intertidal: a case study of adaptation and exaptation in Mediterranean and Atlantic blennies. Reviews of Fish Biology and Fisheries, 5, 2337.
Clutton-Brock, T.H. & Vincent, A.C.J., 1991. Sexual selection and the potential reproductive rates of males and females. Nature, London, 351, 5860.
Gibson, R.N., 1969. The biology and behaviour of littoral fish. Oceanography and Marine Biology. Annual Review. London, 7, 367410.
Jacoby, S.L.S., Kowalik, J.S. & Pizzo, J.T., 1972. Iterative methods for nonlinear optimization problems. Prentice Hall, Englewood: N.J. Cliffs.
Kotrschal, K. & Goldschmid, A., 1981. Population structure of Blennius incognitus Bath, 1968 (Pisces: Teleostei: Blenniidae) during the reproduction period with comments on age and growth of small benthic fishes. Marine Ecology, 2, 225240.
Miller, P.J., 1984. The tokology of gobioid fishes. In Fish reproduction: strategies and tactics (ed. G.W., Potts and R.J., Wootton), pp. 119153. London: Academic Press.
Ricker, W.E., 1975. Computation and interpretation of biological statistics of fish populations. Bulletin. Fisheries Research Board of Canada, no. 191, pp. 1382.
Santos, R.S., 1985. Parentais e satélites: tácticas alternativas de acasalamento nos machos de Blennius sanguinolentus Pallas (Pisces: Blenniidae). Arquipélago - Série Ciências da Natureza, 6, 119146.
Santos, R.S., 1986. Capacidade de retomo à área vital, padrão de dispersão e organização social em Blennius sanguinolentus Pallas (Pisces: Blenniidae) durante a época de reprodução. Psicologia, 5, 1, 121131.
Santos, R.S., 1992. Behavioural ecology, phenology and ethology of Parablennius sanguinolentus parvicornis (Valenciennes in Cuvier & Valenciennes 1836) (Pisces: Blenniidae) of the Azores. PhD thesis, DEEB, University of Liverpool.
Santos, R.S. & Almada, V.C., 1988. Intraspecific variations in reproductive tactics in males of the rocky intertidal fish Blennius sanguinolentus in the Azores. In Behavioral adaptation to intertidal life (ed. G., Chelazzi and M., Vannini), pp. 421–47. New York: Plenum Press.
Taborsky, M., 1994. Sneakers, satellites and helpers: parasitic and co-operative behavior in fish reproduction. Advances in the Study of Behavior, 23, 1100.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed