Reproductive investment in Atlantic cod populations off Newfoundland: Contrasting trends between males and females

Loïc Baulier; M. Joanne Morgan; George R. Lilly; Ulf Dieckmann; Mikko Heino

doi:10.1139/facets-2017-0005

journal article Jan 01, 2017

Reproductive investment in Atlantic cod populations off Newfoundland: Contrasting trends between males and females

Loïc Baulier M. Joanne Morgan George R. Lilly Ulf Dieckmann

Mikko Heino

FACETS Vol. 2 pp. 660-681 · Canadian Science Publishing

View at Publisher Save 10.1139/facets-2017-0005

Abstract

Life history theory predicts selection for higher reproductive investment in response to increased mortality among mature individuals. We tested this prediction over the period from 1978 to 2013 for three populations of Atlantic cod ( Gadus morhua) off Newfoundland. These populations were heavily fished for a long period. We considered changes in standardized gonad weight as a proxy for changes in gonadal investment. We accounted for the allometry between gonad and body weight, individual body condition, water temperature, and potential spatial and density-dependent effects. Males display significant temporal trends in gonadal investment in all populations; in agreement with theoretical predictions, these trends show increased gonadal investments during the earlier part of the time series when mortality was high, with the trends leveling off or reversing after the later imposition of fishing moratoria. In contrast, females display patterns that are less consistent and expected; significant trends are detected only when accounting for density-dependent effects, with females in two populations unexpectedly showing a long-term decline in gonadal investment. Our results support the hypothesis that fisheries-induced evolution has occurred in gonadal investment in males, but not in females, and suggest that gonadal investment is more important for male reproductive success than expected in this lekking species.

Topics

No keywords indexed for this article. Browse by subject →

References

80

[1]

10.1095/biolreprod.107.063669

[2]

10.1073/pnas.0901690106

[3]

10.1111/eva.12044

[4]

10.1046/j.0962-1083.2001.01424.x

[5]

10.1086/283611

[6]

Bishop CA, Murphy EF, Davis MB, Baird JW, and Rose GA. 1993. An assessment of the cod stock in NAFO divisions 2J+3KL. NAFO Scientific Council Research Document 93/86. Northwest Atlantic Fisheries Organization, Dartmouth, Nova Scotia. 51 p.

[7]

Brattey J, Cadigan NG, Healey BP, Lilly GR, Murphy EF, Shelton PA, Stansbury DE, Morgan MJ, and Mahé J-C. 2001. An assessment of the cod stock in NAFO Subdiv. 3Ps in October 2001. DFO Canadian Science Advisory Secretariat Research Document 2001/099, DFO, Ottawa, Ontario. 77 p.

[8]

10.1139/f96-167

[9]

Canadian Council on Animal Care. 2005. Guidelines on: the care and use of fish in research, teaching and testing [online]: Available from ccac.ca/Documents/Standards/Guidelines/Fish.pdf.

[10]

10.1016/s1095-6433(03)00215-0

[11]

10.1139/f2012-047

[12]

DFO. 2008. 2007 State of the ocean: physical oceanographic conditions in the Newfoundland and Labrador region. DFO Canadian Science Advisory Secretariat Science Advisory Report 2008/017, DFO, Ottawa, Ontario. 11 p.

[13]

DFO. 2014. Northern (2J3KL) cod stock update. DFO Canadian Science Advisory Secretariat Science Response 2014/030, DFO, Ottawa, Ontario. 11p.

[14]

DFO. 2015. Stock Assessment of NAFO subdivision 3Ps cod. DFO Canadian Science Advisory Secretariat Science Advisory Report 2015/001, DFO, Ottawa, Ontario. 18 p.

[15]

10.1890/08-1404.1

[16]

10.1111/j.1095-8649.1982.tb03981.x

[17]

10.1111/j.1752-4571.2009.00077.x

[18]

Festa-Bianchet M (2003)

[19]

10.1139/f97-019

[20]

10.1139/f78-155

[21]

10.1046/j.1420-9101.1999.00044.x

[22]

10.1093/icesjms/fst077

[23]

10.1146/annurev-ecolsys-112414-054339

[24]

10.1073/pnas.72.6.2227

[25]

10.1139/f93-271

[26]

10.3354/meps108021

[27]

10.1139/f98-216

[28]

10.1890/07-1469.1

[29]

10.1111/j.1095-8649.1969.tb03855.x

[30]

10.1080/00364827.1991.10413458

[31]

10.1139/f90-138

[32]

10.1139/f91-274

[33]

10.1016/s1385-1101(98)00029-x

[34]

10.1111/j.1095-8649.1995.tb06030.x

[35]

Kunz TH (2004) 10.1016/b0-12-176480-x/00061-9

[36]

10.1139/f96-149

[37]

10.1006/jmsc.2000.0731

[38]

10.1007/bf02285264

[39]

10.1139/f00-026

[40]

10.4027/rgsfcc.2008.03

[41]

10.1016/j.pocean.2013.05.008

[42]

10.1139/f03-090

[43]

10.1139/f97-216

[44]

10.1006/jmsc.1996.0103

[45]

10.1016/j.fishres.2012.02.019

[46]

10.1046/j.1467-2979.2000.00005.x

[47]

10.1038/nature02430

[48]

10.1139/f05-065

[49]

10.1080/07055900.1991.9649390

[50]

10.2960/j.v5.a20

Showing 50 of 80 references

Metrics

5

Citations

80

References

Details

Published: Jan 01, 2017
Vol/Issue: 2
Pages: 660-681

Authors

L

Loïc Baulier

Institute of Marine Research, Nordnes, N-5817 Bergen, Norway; Department of Biology, University of Bergen, N-5020 Bergen, Norway

M

M. Joanne Morgan

Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John’s, NL AIC 5X1, Canada

G

George R. Lilly

Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John’s, NL AIC 5X1, Canada

U

Ulf Dieckmann

Evolution and Ecology Program, International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria

M

Mikko Heino

Institute of Marine Research, Nordnes, N-5817 Bergen, Norway; Department of Biology, University of Bergen, N-5020 Bergen, Norway; Evolution and Ecology Program, International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria; Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan

Cite This Article

Loïc Baulier, M. Joanne Morgan, George R. Lilly, et al. (2017). Reproductive investment in Atlantic cod populations off Newfoundland: Contrasting trends between males and females. FACETS, 2, 660-681. https://doi.org/10.1139/facets-2017-0005

Reproductive investment in Atlantic cod populations off Newfoundland: Contrasting trends between males and females

You May Also Like