[MARMAM] recent publications: cetacean paleontology, life history and diet

Pavel Gol'din pavelgoldin412 at gmail.com
Thu Mar 6 11:30:27 PST 2014

Dear colleagues,

We are pleased to announce the publication of a few recent papers
in cetacean paleontology, life history and diet:

Gol'din, P., Startsev, D. 2014. *Brandtocetus*, a new genus of baleen
whales (Cetacea, Cetotheriidae) from the late Miocene of Crimea,
Ukraine. *Journal
of Vertebrate Paleontology* 34(2):419-433. DOI: 10.1080/02724634.2013.799482


A new cetotheriid baleen whale, Brandtocetus chongulek, gen. et sp. nov.,
is described from the late Miocene of Crimea, Ukraine. The type series is
represented by three partial skulls with periotic bones and tympanic
bullae, one of the three belonging to a juvenile. Brandtocetus chongulek
has transversely expanded squamosals, 'S'-shaped nuchal crests,

an anterior margin of the occipital shield extending anterior to the center
of the temporal fossa, and an elongated posterior process of the
tympanoperiotic. The tympanoperiotic and postglenoid process of the
squamosal are typical of cetotheriines (as opposed to herpetocetines).
Comparison of the juvenile specimen with adults shows no differences in
tympanoperiotic anatomy, moderate squamosal growth, and significant growth
of the neurocranium after the age of at least 1 year. The phylogenetic analysis
including 13 cetotheriids supports the monophyly of Cetotheriidae sensu
stricto and suggests the monophyly of whales from the Eastern Paratethys
(Brandtocetus, Cetotherium, Kurdalagonus, and possibly Eucetotherium).
Brandtocetus and other cetotheriids from the Black Sea region possess
cranial features hypothesized to be adaptations to a generalized filter feeding
strategy combining different modes of suction feeding.

Gladilina E. V., Gol'din P. E. 2014. New Prey Fishes in Diet of Black Sea
Bottlenose Dolphins *Tursiops truncatus *(Mammalia, Cetacea). *Vestnik
zoologii*. 48(1): 83-92.

DOI: 10.2478/vzoo-2014-0009

We report 7 new prey fishes in diet of the Black Sea bottlenose dolphins
Tursiops truncatus (Montagu, 1821) and the fi rst records of 9 prey items
from their stomach contents: herring (Alosa sp.), sand smelt (Atherina
sp.), horse mackerel (Trachurus mediterraneus), picarel (Spicara flexuosa),
Mediterranean sand eel (Gymnammodytes cicerellus), Atlantic stargazer
(Uranoscopus scaber), garfi sh (Belone belone), gobies (Gobiidae indet.)
and blennies (Blenniidae indet.). The Atlantic stargazer was recorded as a
prey species for the common bottlenose dolphin for the fi rst time. The
horse mackerel and the picarel, formerly recorded in the diet of
Mediterranean bottlenose dolphins, now were frequently found in the
examined Black Sea dolphins. The list of prey fi shes for Black Sea
bottlenose dolphins now includes 23 items, with many small pelagic and
demersal fishes, and it is similar to that of Mediterranean dolphins.
Whiting (Merlangius merlangus) is still an important prey species, as 50-70
years ago, whereas turbot (Psetta maeotica), not recorded by us, could lose
its importance due to population decline. As before, red mullet (Mullus
barbatus) is recorded in winter feeding. Feeding on mullets (Mugilidae) is
not a universal trait, and it is possibly restricted to local geographical

Kerem, D., Kent, R., Roditi-Elasar, M., Goffman, O., Scheinin, A., Gol'din,
P. 2014. Early physical maturation of female common bottlenose dolphin
Tursiops truncatus in the eastern Levantine Basin. *Israel Journal of
Ecology & Evolution*, DOI: 10.1080/15659801.2013.892297


Regional resource limitation in the eastern Levantine Basin was predicted
to protract the growth of members of the Israeli sub-population of the
common bottlenose dolphin (CBD), compared to CBD sub-populations of similar
adult size. Growth curves were fitted to length-at-age data available for
24 male and 26 female CBD stranded or incidentally caught along the Israeli
coastline between 2000 and 2009. The obtained model growth constants were
compared to those of other CBD subpopulations from the southeastern coast
of the United States and a correlation to regional seawater primary
productivity was sought. As in other sub-populations, local CBD females
initially grow faster than males for approximately 3-4 years and remain
longer until around eight years old, after which males surpass them in
length. Yet the steep early growth of females as well as its high rate of
decay was found to be extreme compared to other CBD sub-populations, with
99% of the asymptotic length being reached at the age of six years. A
positive correlation between seawater primary productivity and early growth
rate as well as growth decay constants could be demonstrated for CBD males
from Texas, Florida and Israeli coasts. Females of the same sub-population
presented a non-monotonic relationship to primary productivity. Early female

attainment of physical maturity in an ultra-oligotrophic region was
unpredicted and is not readily explained. It may accompany early
reproductive maturation, selected for as partial compensation for lower
lifelong reproductive success.

Gol'din, P., Zvonok, E., Rekovets, L., Kovalchuk, A., Krakhmalnaya, T.
2014. Basilotritus (Cetacea: Pelagiceti) from the Eocene of Nagornoye
(Ukraine): New data on anatomy, ontogeny and feeding of early
basilosaurids. *Comptes Rendus Palevol*


A new specimen of early basilosaurid, now identified as Basilotritus sp.,
comes from thelate Middle Eocene of Ukraine. It has basilosaurid-type cheek
teeth with cinguli, similar tothose of Zygorhiza, and roots resembling
those of Georgiacetus vogtlensis and early Neoceti;an unusual feature of
these teeth is the presence of accessory denticles of the second
orderlocated on the crown denticles. The postcranial anatomy shows a
mixture of primitive andadvanced basilosaurid traits. The phylogenetic
position of the genus Basilotritus is confirmedto be near the base of
Basilosauridae, between Supayacetus and Zygorhiza. The ontogeny ofthe
specimen from Nagornoye is characterized by large body size, slow skeletal
matura-tion and intensive pachyosteosclerosis that are interpreted as
neotenic development. Rapidtooth wear with strong apical abrasion is the
result of specialized diet, possibly feeding on sharks

For details, please contact me at: pavelgoldin412 at gmail.com

Kind regards,

Pavel Gol'din
Taurida National University
Simferopol, Crimea, Ukraine
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