[MARMAM] Multidimensional trace metals and nutritional niche differ between sexually immature and mature common dolphins (Delphinus delphis)

Karen Stockin K.A.Stockin at massey.ac.nz
Sat Jul 15 00:09:35 PDT 2023


Dear MARMAMers,

Our latest open access article is now available online

Stockin KA, Machovsky-Capuska GE, Palmer EI, Amiot C (2023). Multidimensional trace metals and nutritional niche differ between sexually immature and mature common dolphins (Delphinus delphis). Environmental Pollution 333: 121935.  https://doi.org/10.1016/j.envpol.2023.121935

[cid:image001.png at 01D9B74E.A2C7B770]

ABSTRACT:
There is a need to understand the links between metals and nutrition for apex marine predators, which may be subject to different ecotoxicological effects at different life stages. We combined stomach content analyses (SCA), prey composition analysis (PCA), the Multidimensional Niche Framework (MNNF) with Bayesian multivariate ellipses, trace metal analysis and nicheROVER to investigate nutrition and trace metals across sex, age, and sexual maturity status in common dolphins (Delphinus delphis) from New Zealand. A broader prey composition niche breadth (SEAc) was estimated for immature compared to mature conspecifics, showing a higher degree of prey and nutrient generalism driven by protein (P) intake. Cd and Zn niche similarities suggests these metals were incorporated through similar prey in both immature and mature dolphins, whereas Hg and Se niche divergence indicates uptake occurred via different prey. Our multidisciplinary assessment demonstrated how nutrients and metal interactions differ in common dolphins depending upon sexual maturity. This approach has relevance when considering how marine pollution, environmental fluctuations and climate change may affect nutritional and trace metal interactions during different reproductive stages within marine predators.

nāku noa, Karen

Karen A Stockin, PhD
Professor – Marine Biology
Rutherford Discovery Fellow – Royal Society Te Aparangi

Cetacean Ecology Research Group | School of Natural Sciences | Massey University
Private Bag 102 904, North Shore, Auckland 0745, New Zealand
Physical Address: Cetacean Research Unit, 5 University Avenue, Massey University, Albany, North Shore, Auckland

[cid:image002.png at 01D9B74E.A2C7B770] +64 (0)21 423997   •  k.a.stockin at massey.ac.nz<mailto:k.a.stockin at massey.ac.nz>   •  http://www.cetaceanecology.org<http://www.cetaceanecology.org/>

[cid:image003.png at 01D9B74E.A2C7B770]<https://www.researchgate.net/profile/Karen_Stockin>  [cid:image004.png at 01D9B74E.A2C7B770] <https://scholar.google.co.nz/citations?user=3veDZKUAAAAJ&hl=en>   [cid:image005.png at 01D9B74E.A2C7B770] <https://twitter.com/karen_stockin>   [cid:image006.png at 01D9B74E.A2C7B770] <https://www.facebook.com/CetaceanEcologyOrg/posts/3281214818613245>    [cid:image007.png at 01D9B74E.A2C7B770] <https://www.massey.ac.nz/massey/expertise/profile.cfm?stref=926050>   [cid:image008.png at 01D9B74E.A2C7B770] <https://www.massey.ac.nz/massey/explore/research/animal-veterinary/animal/marine/marine_home.cfm>
[cid:image009.png at 01D9B74E.A2C7B770]<https://www.cetaceanecology.org/>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 1576249 bytes
Desc: image001.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0009.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.png
Type: image/png
Size: 1098 bytes
Desc: image002.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0010.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image003.png
Type: image/png
Size: 3082 bytes
Desc: image003.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0011.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.png
Type: image/png
Size: 4035 bytes
Desc: image004.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0012.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image005.png
Type: image/png
Size: 2831 bytes
Desc: image005.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0013.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image006.png
Type: image/png
Size: 6695 bytes
Desc: image006.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0014.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image007.png
Type: image/png
Size: 7044 bytes
Desc: image007.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0015.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image008.png
Type: image/png
Size: 5760 bytes
Desc: image008.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0016.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image009.png
Type: image/png
Size: 18504 bytes
Desc: image009.png
URL: <http://lists.uvic.ca/pipermail/marmam/attachments/20230715/8b5917f7/attachment-0017.png>


More information about the MARMAM mailing list