| polychlorinated biphenyls and their hydroxylated metabolites (oh-pcbs) in the blood of toothed and baleen whales stranded along japanese coastal waters. | in this study, we determined the residue levels and patterns of polychlorinated biphenyls (pcbs) and hydroxylated pcbs (oh-pcbs) in the blood from eight species of toothed whales and three species of baleen whales stranded along the japanese coast during 1999-2007. penta- through hepta-chlorinated pcb congeners were the dominant homologue groups in all cetaceans. in contrast, specific differences in the distribution of dominant oh-pcb isomers and homologues were found among the cetacean species. ... | 2010 | 20426459 |
| balaenoptera omurai is a newly discovered baleen whale that represents an ancient evolutionary lineage. | balaenoptera omurai, formerly classified as a small form of bryde's whale, was recently reclassified as a new baleen whale species of the family balaenopteridae. although researchers have investigated the evolutionary history of balaenopteridae and their relatives using molecular phylogenetic methods, the taxonomy of the ordinary bryde's whale (balaenoptera brydei) and small-form bryde's whales (balaenoptera edeni and b. omurai) remains unclear. we have used complete mtdna sequences and short in ... | 2006 | 16843687 |
| proceedings of the smbe tri-national young investigators' workshop 2005. baleen whale phylogeny and a past extensive radiation event revealed by sine insertion analysis. | baleen whales (suborder mysticeti) comprise 11 extant species that are classified into four families. although several phylogenetic hypotheses about these taxa have been proposed, their phylogenetic relationships remain confused. we addressed this problem using short interspersed repetitive element (sine) insertion data, which now are regarded as almost ideal shared, derived characters at the molecular level. we reconstructed the phylogenetic relationships of baleen whales by characterizing 36 i ... | 2006 | 16330660 |
| calls of bryde's whale (balaenoptera edeni) recorded in the gulf of california (l). | a total of 109 recordings aiming to identify bryde's whale calls were collected from the gulf of california, mexico, during field trips performed from january 2010 to june 2014. vocalizations were recorded only when no calves were observed. four types of calls were identified. calls similar to the be4 call type previously reported for the eastern tropical pacific region and south of california were recorded. in addition, three calls, not reported in previous studies of the bryde's whale, have al ... | 2015 | 26627748 |
| melanin granules melanophages and a fully-melanized epidermis are common traits of odontocete and mysticete cetaceans. | the cellular mechanisms used to counteract or limit damage caused by exposure of marine vertebrates to solar ultraviolet (uv) radiation are poorly understood. cetaceans are vulnerable because they lack protective skin appendages and are obliged to surface continuously to breathe, thus being exposed repeatedly to uv light. although molecular mechanisms of photoprotection of cetaceans have been studied, there is limited knowledge about their epidermal structure and photoprotective effectors. | 2017 | 27943433 |
| swim track kinematics and calling behavior attributed to bryde's whales on the navy's pacific missile range facility. | time difference of arrival methods for acoustically localizing multiple marine mammals have been applied to recorded data from the navy's pacific missile range facility in order to localize and track calls attributed to bryde's whales. data were recorded during the months of august-october 2014, and 17 individual tracks were identified. call characteristics were compared to other bryde's whale vocalizations from the pacific ocean, and locations of the recorded signals were compared to published ... | 2016 | 28040028 |
| omura's whales (balaenoptera omurai) off northwest madagascar: ecology, behaviour and conservation needs. | the omura's whale (balaenoptera omurai) was described as a new species in 2003 and then soon after as an ancient lineage basal to a bryde's/sei whale clade. currently known only from whaling and stranding specimens primarily from the western pacific and eastern indian oceans, there exist no confirmed field observations or ecological/behavioural data. here we present, to our knowledge, the first genetically confirmed documentation of living omura's whales including descriptions of basic ecology a ... | 2015 | 26587244 |
| stable isotope ratios and mercury levels in red meat products from baleen whales sold in japanese markets. | we analyzed the δ(13)c, δ(15)n and δ(18)o values and hg concentration in red meat products originating from the predominant types sold in japan for human consumption: two populations of common minke (j- and o-types), bryde's and sei whales in the western north pacific ocean, and fin and antarctic minke whales in the southern ocean. the order of the trophic positions, evaluated by δ(15)n values and hg concentrations, coincided with their known feeding habits: common minke (j-type)=common minke (o ... | 2012 | 22364843 |
| molecular markers in keratins from mysticeti whales for species identification of baleen in museum and archaeological collections. | baleen has been harvested by indigenous people for thousands of years, as well as collected by whalers as an additional product of commercial whaling in modern times. baleen refers to the food-filtering system of mysticeti whales; a full baleen rack consists of dozens of plates of a tough and flexible keratinous material that terminate in bristles. due to its properties, baleen was a valuable raw material used in a wide range of artefacts, from implements to clothing. baleen is not widely used t ... | 2017 | 28854252 |
| cdna-derived amino acid sequences of myoglobins from nine species of whales and dolphins. | we determined the myoglobin (mb) cdna sequences of nine cetaceans, of which six are the first reports of mb sequences: sei whale (balaenoptera borealis), bryde's whale (balaenoptera edeni), pygmy sperm whale (kogia breviceps), stejneger's beaked whale (mesoplodon stejnegeri), longman's beaked whale (indopacetus pacificus), and melon-headed whale (peponocephala electra), and three confirm the previously determined chemical amino acid sequences: sperm whale (physeter macrocephalus), common minke w ... | 2006 | 16962803 |
| long-term and large-scale epidemiology of brucella infection in baleen whales and sperm whales in the western north pacific and antarctic oceans. | in a long-term, large-scale serologic study in the western north pacific ocean, anti-brucella antibodies were detected in common minke whales (balaenoptera acutorostrata) in the 1994-2010 offshore surveys (21%, 285/1353) and in the 2006-2010 japanese coastal surveys (20%, 86/436), in bryde's whales (b. edeni brydei) in the 2000-2010 offshore surveys (9%, 49/542), in sei whales (b. borealis) in the 2002-2010 offshore surveys (5%, 40/788) and in sperm whales (physeter macrocephalus) in the 2000-20 ... | 2016 | 27320816 |
| effects of semen extenders and storage temperatures on characteristics of frozen-thawed bryde's (balaenoptera edeni) whale spermatozoa. | the present study investigated effects of three semen extenders and storage temperatures on post-thaw characteristics of bryde's whale spermatozoa. spermatozoa were collected from the vasa deferens of three mature bryde's whales captured during the japanese whale research in the north-west pacific (may to august 2007) after death. the three semen extenders used for freezing were 1) a commercialized synthetic extender (andromed: am), 2) tris-based + 10% bovine serum albumin (bsa) and 3) tris-base ... | 2009 | 19672041 |
| attempts at in vitro fertilization and culture of in vitro matured oocytes in sei ( balaenoptera borealis) and bryde's ( b. edeni) whales. | the cumulus-oocyte-complexes (cocs) recovery rates with respect to reproductive status per sei (balaenoptera borealis) and bryde's (b. edeni) whales were determined in experiment 1. the number of cocs recovered ranged from 16.0 to 30.6 and from 6.7 to 26.8 per sei and bryde's whales, respectively. the effects of cocs grades and protein supplementation in embryo culture medium on development of in vitro fertilized (ivf) embryos were evaluated in sei and bryde's whales in experiment 2. the cocs we ... | 2009 | 18925980 |
| cetacean diversity on the parnaiba delta, maranhão state, northeastern brazil. | the increase in the research of cetacean surveys on the brazilian coast has brought new data on the distribution of species never reported before. the present work reviews the current knowledge on cetaceans species and extends this knowledge with an analysis of cetaceans stranded in the parnaiba delta, on the coast of maranhão state, brazil. the studies on cetacean diversity on the coast of the parnaíba delta were made from august 2004 to august 2006. fourteen strandings were reported, represent ... | 2008 | 18833476 |
| fertilizability and chromosomal integrity of frozen-thawed bryde's whale (balaenoptera edeni) spermatozoa intracytoplasmically injected into mouse oocytes. | prior to attempting the in vitro production of embryos in the bryde's whale (balaenoputera edeni), we investigated whether spermatozoa can retain the capacity for oocyte activation and pronucleus formation as well as chromosomal integrity under cryopreservation by using intracytoplasmic sperm injection (icsi) into mouse oocytes. regardless of motility and viability, whale spermatozoa efficiently led to the activation of mouse oocytes (90.3-97.4%), and sperm nuclei successfully transformed into m ... | 2007 | 17391541 |
| plasma and urine levels of electrolytes, urea and steroid hormones involved in osmoregulation of cetaceans. | cetaceans are well adapted to their hyperosmotic environment by properly developed osmoregulatory ability. a question here is how they regulate water and mineral balances in marine habitats. in the present study, we determined blood and urine levels of various chemicals involved in osmoregulation, compared them with those in artiodactyls, and characterized the values in the whales. blood and urine samples obtained from baleen whales of common minke (balaenoptera acutorostrata), sei (b. borealis) ... | 2005 | 16357473 |
| pathological and serological evidence of brucella-infection in baleen whales (mysticeti) in the western north pacific. | abnormal testes and uterus were observed in 13 males (33%) and one female (3%) out of 40 common minke whales (balaenoptera acutorostrata) in the western north pacific. similar lesions were found in testis and ovary, respectively, in one male (2%) and female (2%) out of 43 bryde's whales (balaenoptera edeni) in the western north pacific. grossly, granular lesions with caseation and calcification were main pathological signs, and they were restricted to reproductive organs of mature whales. chroni ... | 2003 | 12493493 |
| cetacean relaxin. isolation and sequence of relaxins from balaenoptera acutorostrata and balaenoptera edeni. | the tendency toward extremely high variability among relaxins derived from purportedly closely related species has come to an abrupt end with the discovery of quasi-porcine relaxin in the minke whale (balaenoptera acutorostrata) and the bryde's whale (balaenoptera edeni). an aqueous abstract of the corpora lutea of the two baleen whales contained significant amounts of relaxin-like activity as determined by a mouse bioassay and by cross-reactivity with anti-pig relaxin antibodies. the activity c ... | 1989 | 2910872 |
| analysis of the c4 genes in baleen whales using a human cdna probe. | we have used a human c4 cdna probe to investigate the complement component c4 gene in four members of the family balaenopteridae: fin whale (balaenoptera physalus), sei whale (b. borealis), minke whale (b. acutorostrata), and bryde's whale (b. edeni). restriction mapping of genomic dna from the first three species suggests the presence of only one locus in these species, and also shows that the c4 genes in the three species are very similar. we have used 14 restriction endonucleases to investiga ... | 1990 | 1975799 |
| types, distribution, and seasonal occurrence of sounds attributed to bryde's whales (balaenoptera edeni) recorded in the eastern tropical pacific, 1999-2001. | vocalizations resembling known bryde's whale sounds were recorded on autonomous hydrophones at seven sites in the eastern tropical pacific. five short (<3 s) low-frequency (<80 hz) "phrase" types were observed. "swept alternating tonal" phrases included a 37-hz tone and often a 25-16-hz downswept tone, while "nonswept alternating tonal" phrases had a predominant tone at 29 hz and often additional tones at 16 and 47 hz. alternating tonal phrases were found in 79% of the total hours in which phras ... | 2005 | 16240841 |
| population differentiation of 2 forms of bryde's whales in the indian and pacific oceans. | accurate identification of units for conservation is particularly challenging for marine species as obvious barriers to gene flow are generally lacking. bryde's whales (balaenoptera spp.) are subject to multiple human-mediated stressors, including fisheries bycatch, ship strikes, and scientific whaling by japan. for effective management, a clear understanding of how populations of each bryde's whale species/subspecies are genetically structured across their range is required. we conducted a popu ... | 2013 | 24081988 |
| could feeding habit and migratory behaviour be the causes of different toxicological hazard to cetaceans of gulf of california (mexico)? | in this work, a suite of diagnostic biomarkers was applied to seven cetacean species to evaluate the role of the feeding habits and migratory behavior in the toxicological status of these species from the gulf of california, mexico. we investigate the interspecific differences in cytochrome p450 1a1 and 2b (cyp1a1 and cyp2b, respectively), aryl hydrocarbon receptor and e2f transcription factor 1 and the contaminants levels [organochlorine compounds, polybrominated diphenyl ethers (pbdes) and pol ... | 2014 | 24510600 |
| potential bryde's whale (balaenoptera edeni) calls recorded in the northern gulf of mexico. | several marine autonomous recording units (marus) were deployed in northeastern gulf of mexico from 2010–2012 to study the acoustic ecology of bryde's whales (balaenoptera edeni) following the deepwater horizon oil spill. however, the acoustic repertoire of this sub-population is poorly documented, presently limiting the efficacy of acoustic monitoring applications. numerous stereotyped, low-frequency signals from a putative biological sound source were found throughout the recordings. sounds fe ... | 2014 | 24926502 |
| low frequency baleen whale calls detected on ocean-bottom seismometers in the lau basin, southwest pacific ocean. | ten months of broadband seismic data, recorded on six ocean-bottom seismographs located in the lau basin, were examined to identify baleen whale species. as the first systematic survey of baleen whales in this part of the southwest pacific ocean, this study reveals the variety of species present and their temporal occurrence in and near the basin. baleen whales produce species-specific low frequency calls that can be identified by distinct patterns in data spectrograms. by matching spectrograms ... | 2015 | 25618038 |
| mitochondrial phylogenetics and evolution of mysticete whales. | the phylogenetic relationships among baleen whales (order: cetacea) remain uncertain despite extensive research in cetacean molecular phylogenetics and a potential morphological sample size of over 2 million animals harvested. questions remain regarding the number of species and the monophyly of genera, as well as higher order relationships. here, we approach mysticete phylogeny with complete mitochondrial genome sequence analysis. we determined complete mtdna sequences of 10 extant mysticeti sp ... | 2005 | 15805012 |
| relationship between serum sex hormone concentrations and histology of seminiferous tubules of captured baleen whales in the western north pacific during the feeding season. | the present study was conducted to obtain new information on relationships among serum testosterone (t), estradiol-17 beta (e(2)), follicle-stimulating hormone (fsh), and luteinizing hormone (lh) concentrations and histology of seminiferous tubules in captured common minke and bryde's whales during the feeding season. blood samples and testes were collected from common minke (n=39 for blood samples, n=15 for testes) and bryde's (n=14 for blood samples, n=7 for testes) whales captured from may 20 ... | 2004 | 15329473 |
| chemical characterization of the oligosaccharides in bryde's whale (balaenoptera edeni) and sei whale (balaenoptera borealis lesson) milk. | samples of milk from a bryde's whale and a sei whale contained 2.7 g/100 ml and 1.7 g/100 ml of hexose, respectively. both contained lactose as the dominant saccharide along with small amounts of neu5ac(alpha2-3)gal(beta1-4)glc (3'-n-acetylneuraminyllactose), neu5ac(alpha2-6)gal(beta1-4)glc (6'-n-acetylneuraminyllactose) and neu5ac(alpha2-6)gal(beta1-4)glcnac(beta1-3)gal(beta1-4)glc (lst c). the dominance of lactose in the carbohydrate of these milks is similar to that of minke whale milk and bo ... | 2007 | 17113803 |
| annotated checklist and fisheries interactions of cetaceans in togo, with evidence of antarctic minke whale in the gulf of guinea. | based on strandings and captures, 9 cetacean species, including 6 odontocetes and 3 mysticetes, are documented (photos and specimens) in togo's coastal waters (newly-recorded species marked with an asterisk): antarctic minke whale (balaenoptera bonaerensis*), bryde's whale (balaenoptera brydei or b. edeni), humpback whale (megaptera novaeangliae), sperm whale (physeter macrocephalus), pygmy sperm whale (kogia breviceps*), short-finned pilot whale (globicephala macrorhynchus*), pantropical spotte ... | 2014 | 24447657 |
| identifying the "demon whale-biter": patterns of scarring on large whales attributed to a cookie-cutter shark isistius sp. | the presence of crater-like wounds on cetaceans and other large marine vertebrates and invertebrates has been attributed to various organisms. we review the evidence for the identity of the biting agent responsible for crater wounds on large whales, using data collected from sei (balaenoptera borealis), fin (b. physalus), inshore and offshore bryde's (b. brydeii sp) and sperm whales (physeter macrocephalus) examined at the donkergat whaling station, saldanha bay, south africa between march and o ... | 2016 | 27055057 |
| a newly discovered species of living baleen whale. | in the late 1970s eight balaenoptera specimens of unknown identity were caught in the lower latitudinal indo-pacific waters by japanese research whaling vessels. the combination of the allozyme patterns and physical maturity of the eight specimens separated them from all acknowledged balaenoptera species. in september 1998 we collected a medium-sized baleen whale carcass on a coastal island in the sea of japan. this specimen and the previously collected eight specimens resembled balaenoptera phy ... | 2003 | 14628049 |
| characterization of ganglioside gm4 lactones isolated from the whale brain. | two novel ganglioside lactones were isolated from the brain of bryde's whale (balaenoptera edeni) and characterized. these gangliosides migrated above gm4 and were designated m4-1 and m4-2 in the order of location from the bottom of the tlc plate. these gangliosides were converted to gm4 by mild alkali treatment. although m4-1 and m4-2 contained 1 mol each of n-acetylneuraminic acid and galactose, they behaved as neutral lipids on ion-exchange chromatography. inner ester linkages were found in t ... | 1990 | 2391348 |
| spondylitis deformans in a bryde's whale (balaenoptera edeni anderson) stranded on the southern coast of queensland. | | 1984 | 6492333 |