Eavesdropping on the brain at sea: development of a surface-mounted system to detect weak electrophysiological signals from wild animals

Kendall-Bar, Jessica M.; Mukherji, Ritika; Nichols, Jordan; Lopez, Catherine; Lozano, Daniel A.; Pitman, Julie K.; Holser, Rachel R.; Beltran, Roxanne S.; Schalles, Matt; Field, Cara L.; Johnson, Shawn P.; Vyssotski, Alexei L.; Costa, Daniel P.; Williams, Terrie M.

doi:10.1186/s40317-022-00287-x

Animal Biotelemetry

Table 1 Description of animals involved in this study, denoting animal ID, recording location

From: Eavesdropping on the brain at sea: development of a surface-mounted system to detect weak electrophysiological signals from wild animals

#	Location	Age class and estimate (yrs)	Sex	Length (cm)	Girth (cm)	Mass (kg)	Phase	Recording type	Recording duration (hrs)
1	TMMC	Weanling (0,1]	M	161	–	43.0	1	Euthanasia; deemed unreleasable	< 1 h
2	TMMC	Weanling (0,1]	F	115	–	26.5	1	Euthanasia; deemed unreleasable	< 1 h
3	TMMC	Weanling (0,1]	F	138	–	57.0	1	Release Exam	< 1 h
4	TMMC	Weanling (0,1]	M	128	–	61.0	1	Release Exam	< 1 h
5	TMMC	Weanling (0,1]	F	147	–	63.5	1	Release Exam	< 1 h
6	TMMC	Weanling (0,1]	F	139	–	52.5	1	Release Exam	< 1 h
7	TMMC	Weanling (0,1]	F	137	–	50.5	1	Release Exam	< 1 h
8	TMMC	Weanling (0,1]	F	138	–	55.5	1	Release Exam	< 1 h
9	TMMC	Weanling (0,1]	M	146	–	57.0	1	Release Exam	< 1 h
10	TMMC	Weanling (0,1]	M	141	–	74.5	1	Release Exam	< 1 h
11	TMMC	Weanling (0,1]	F	130	–	54.5	1	Release Exam	< 1 h
12	LML	Yearling (0,1]	F	152	132	118	2a / V1	Captive Deployment	81.86 h
13	LML	Yearling (0,1]	F	165	139	148	2a / V2	Captive Deployment	79.71 h
14	LML	Juvenile (1,2]	F	188	124	141	2a / V2	Captive Deployment	116.85 h
15	LML	Juvenile (1,2]	F	206	147	196	2a / V2	Captive Deployment	115.86 h
16	LML	Juvenile (1,2]	F	206	129	177	2a / V2	Captive Deployment	69.62 h
17	ANO	Weanling (0,1]	F	165	143	200	2b / V2	Wild Deployment	73.81 h
18	ANO	Weanling (0,1]	F	157	130	116	2b / V3	Wild Deployment	120.90 h
19	ANO	Weanling (0,1]	F	151	129	118	2b / V3	Wild Deployment	120.04 h
20	ANO	Juvenile (1,2]	F	170	140	157	2b / V3	Wild Deployment	119.19 h
21	ANO	Juvenile (2,3]	F	187	102	~ 120	2b / V2	Wild Deployment	75.16 h
22	ANO	Juvenile (2,3]	F	177	134	154	2b / V3	Wild Deployment	98.81 h
Phase 1 total (N = 11)							1	Stationary Recordings (TMMC)	< 12 h
Phase 2A total (N = 5)							2a	Captive Deployments (LML)	464 h (19.3 d)
Phase 2B total (N = 6)							2b	Wild Deployments (ANO)	608 h (25.3 d)

TMMC: The Marine Mammal Center, LML: Long Marine Lab, and ANO: Año Nuevo State Park), age class and age estimate in years (weanling (post-nursing): 1–6 months, yearling: 6–12 months, juvenile: 1–3 years old), sex (determined visually as male [M] or female [F]), standard length (cm), axillary girth (cm), mass (in kilograms), study phase and tag design iteration (V1/V2/V3), type of recording (during euthanasia or release exam procedure (at TMMC) or deployment in captivity or the wild), and the total recording duration in hours (h) and days (d)

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ISSN: 2050-3385

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