Hi all, My co-authors and I are pleased to share our new publication in Behavioral Ecology:
Indeck, K.L., Noad, M.J. & Dunlop, R.A. (2021) The conspecific avoidance strategies of adult female-calf humpback whales. Behavioral Ecology. DOI: 10.1093/beheco/arab031<https://doi.org/10.1093/beheco/arab031> ABSTRACT During migration, humpback whale (Megaptera novaeangliae) adult females and their calves use acoustic calling to help maintain contact. The signals produced by these pairs, however, may unintentionally attract nearby breeding males, which can result in interactions that have negative physical and physiological effects on the calf. Therefore, maternal females must choose the vocal and/or behavioral strategy that most effectively balances intra-pair communication with male avoidance. Here, we analyzed differences in adult female-calf vocal activity and movement behavior according to the presence of, and distance to, singing whales and other groups likely to contain males. The results of this study found that these pairs make only minimal changes to their vocal behavior in response to nearby males, suggesting that they have instead evolved calls that are naturally difficult to detect (i.e., produced at significantly lower rates and acoustic levels than other whale groups, resulting in a restricted active space). In addition, they maintain spatial separation from nearby groups by moving to shallower, inshore waters, increasing their proportion of time spent near the surface, and favoring a direct migratory course. This combination of cryptic strategies balances avoidance of unwanted conspecific interaction with the necessity of continued contact between maternal female humpback whales and their calves. You can access the abstract using this link: https://academic.oup.com/beheco/advance-article-abstract/doi/10.1093/beheco/arab031/6285873<http://track.smtpsendmail.com/9032119/c?p=fCmxEUOlDeBEJep4LvMOXiT0r9beGgQe6UGsYFQXLuN3YOOVhZASf68Bo9r43Mjy04WFBRkU0LzuttnkO56Mbc7BbYobtldlmoLIHDnzcSOnR_JvlNVzJNYjhLQsBISx38TN6WEPdc0s-XEetcXZ0bT83pRi_LwhLfveeOTPp-xXi9jFcBQdCVpfN01_TRaxmhOAMl4Va38skEuVcnwBbkPxZMcl9eAlfV_cMucwDqs=> If you are not a subscriber to the journal, I am happy to share a PDF copy with those who request it. Cheers, Kate Dr Katherine Indeck Cetacean Ecology and Acoustics Laboratories Moreton Bay Research Station The University of Queensland North Stradbroke Island, QLD 4183, Australia M +61 0413 933 922 E [email protected]<mailto:[email protected]> W ceal.lab.uq.edu.au<http://www.uq.edu.au/>
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