[MARMAM] New Pub: Gallagher et al 2018
carag16 at gmail.com
Wed Mar 14 06:12:16 PDT 2018
Dear members of MarMam,
My co-authors and I are pleased to announce our new publication:
Gallagher, C. A., Stern, S. J. and Hines, E. (2018). The metabolic cost of
swimming and reproduction in harbor porpoises (Phocoena phocoena) as
predicted by a bioenergetic model. Mar Mam Sci. doi:10.1111/mms.12487
While harbor porpoises currently enter San Francisco Bay year-round,
evidence suggests a disappearance that spanned approximately 65 yr. The
range of energetic costs of basal metabolism, locomotion, thermoregulation,
and reproduction was estimated for porpoises, using a velocity-dependent
bioenergetic model to estimate the potential food requirements of this
returning predator. The costs of thermoregulation and locomotion varied
with velocity while basal metabolism and reproduction did not. The total
metabolic rate in W was analyzed for all possible adult reproductive
states. Estimated biomass uptake in kg day-1 for a 68.5 ± 26.5 km daily
swimming distance was assessed using a mixed diet of northern anchovy and
rockfish for all possible reproductive states and was found to be highest
for simultaneously pregnant and lactating females (4.1 ± 1.6 kg/d) and
lowest for male porpoises (1.7 ± 0.6 kg/d). Total energetic requirements
found for harbor porpoises ranged from 79.3 (± 29.0) to 186.0 (± 58.5) W.
The daily energetic intake for lactating porpoises was estimated to be 105%
greater than for a nonreproductive female porpoise. Harbor porpoises in SF
Bay were found to require approximately 30.4 ± 22.0 metric tons of fish per
year from Bay waters.
The paper can be accessed here: http://onlinelibrary.
If you would like a copy, please email Cara directly at
cgallagher at bios.au.dk.
Department of Bioscience
+45 50 30 91 98 <+45%2050%2030%2091%2098> tel.
cgallagher at bios.au.dk
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