NEWSLETTER 11/2017 02.11.2017

Please acknowledge use of the database www.shark-references.com in your publications, and cite: 

Pollerspöck, J. & Straube, N. 2017, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2017

New images for our project "#Toothmorphology" (https://shark-references.com/post/523)!

Three new species and for two species new images!

Please support our project and send your images of teeth or jaws to juergen.pollerspoeck@shark-references.com!

Squalus acanthias LINNAEUS, 1758 new images!
Ginglymostoma cirratum (BONNATERRE, 1788) new images!
Carcharhinus acronotus (POEY, 1860) new!
Carcharhinus albimarginatus (RÜPPELL, 1837) new!
Carcharhinus amblyrhynchos (BLEEKE

Nico (nicolas.straube@shark-references.com) and Jürgen (juergen.pollerspoeck@shark-references.com)



Ana Lucia Furtado Soares

WebAdress: http://www.gulfelasmoproject.com/
Threatened elasmobranchs of Angola: Assessing impacts of artisanal fisheries" is a research project that aims to increase knowledge of sharks, rays and guitarfish, providing baseline information and long term scientific data to fill the gap on species-specific information and understand the biodiversity of elasmobranchs in Angola, South West Africa. This data will be an essential key for adequate monitoring of endangered populations and the development of effective management plans for Angola’s coast and West African’s waters.
Theresa Bella Silvestre dos Santos

UFRPE- Federal Rural University of Pernambuco - Brazil

I’m a shark researcher who is working with the carcharhinidae family and trying to understand their movements around the Atlantic Ocean.

Would you like to become a shark-reference partner? Please contanct us per E-mail!

Partner in Google-Maps




New images at shark-references:

Many thanks to the following persons for the permission to use their images:

Fahmi, Research Center for Oceanography, Jakarta, Indonesia & Dave Ebert for the images of Etmopterus bigelowi SHIRAI & TACHIKAWA, 1993 (NCIP 6567), female, 659 mm TL, fish landing at Tanjungluar, east Lombok, Indonesia

Thanks to Leandro Yokota and Sandra Raredon for the permission to use the images of the new described Gymnura species at shark-references: Gymnura lessae & Gymnura sereti

Rohan Rao, India for the mage of Glaucostegus obtusus MÜLLER & HENLE, 1841, from Marve, Malad, Mumbai, date of catch 22.10.2017, TL ca. 100 cm

Jason C. Seitz, ANAMAR Environmental Consulting, Inc. for the images of Beringraja rhina (JORDAN & GILBERT, 1880), off Coos Bay, Oregon, 785 mm TL, female, trawled in 96,6 m of water on 7 Oct 2017, released alive

Aaron C. Henderson, SFS · Center for Marine Resource Studies for the images of Chaenogaleus macrostoma (BLEEKER, 1852), captured by a fisherman off Dibba in the Musandam region of Oman (Gulf of Oman) in 2003; 90 cm TL, female

Swapnil Tandel, Senior Research Fellow, Central Marine Fisheries Research Institute, Mumbai RC for the image of Torpedo sinuspersici OLFERS, 1831, Bhau cha Dhakka Mumbai Maharashtra - India, caught by a Bottom set trawl netter as a Bycatch in the fishing operation, Length 35 cm

Pradip Patade, India for the image of Maculabatis gerrardi (GRAY, 1851), Mumbai, India (45 cm DW), 01.10.2017

Dr Guzmán Díez, Spain for the image of Neoharriotta pinnata (SCHNAKENBECK, 1931), adult female, TL: 123.1 cm, total weight of 7060 g

Missing papers:

Many thanks to all friends of shark-references, who sent us some missing papers last month!

Shark-References would kindly like to ask you for your contribution to this project.

Please support www.shark-references.com and send missing papers (not listed papers or papers without the info-symbol) to juergen.pollerspoeck@shark-references.com or nicolas.straube@shark-references.com



Upcoming Meetings:

14. Tagung der Gesellschaft für Ichthyologie (GfI)

(German fish society)


24. -26. November 2017



Zoologischen Forschungsmuseum Alexander Koenig in Bonn

museum koenig logo

Zoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160, 53113 Bonn

More at: http://www.ichthyologie.de/index.php/de/gfi-tagungen/gfi-tagung-2017

João Pessoa, 3-8 June, 2018
The Sharks International Conference is the first truly international event devoted to elasmobranchs, and its first two editions were held respectively in Cairns, Australia in 2010 and Durban, South Africa in 2014. The city of João Pessoa was chosen as the venue for this important event, which will also congregate members of the Brazilian Society for the Study of Elasmobranchs (SBEEL) and the American Elasmobranch Society (AES) in 2018.
João Pessoa, founded in August 5, 1585, is the capital of Paraíba state, northeastern Brazil. It is located in the easternmost portion of the Americas, where a cape named Ponta do Seixas enters the Atlantic Ocean. Its coastline extends for 24 kilometers, with nine beaches. The downtown area and neighbouring municipalities present many historical and tourist sites.
More information and an internet site of the event will soon be available. We hope to have many participants from all over the world.

Extinct Chondrichthyes:

BOGAN, S. & AGNOLIN, F.L. & OTERO, R.A. & EGLI, F.B. & SUÁREZ, M.E. & SOTO-ACUÑA, S. & NOVAS, F.E. (2017): A new species of the genus Echinorhinus(Chondrichthyes, Echinorhiniformes) from the upper cretaceous of southern South America (Argentina-Chile). Cretaceous Research, 78: 89-94
New species: Echinorhinus maremagnum
Abstract: We describe isolated shark teeth collected from levels of the Calafate Formation at the SE coast of the Argentino Lake, Calafate city, Santa Cruz province, Argentina (Atlantic Ocean), and from the Algarrobo coast at the Valparaíso Region in central Chile (Pacific Ocean). The teeth belong to a new species of the echinorhiniform genus EchinorhinusEchinorhinus maremagnum n. sp. was a taxon distributed in both the southwestern Atlantic and the southeastern Pacific. This new taxon constitutes the oldest record of echinorhiniforms from South America and one of the few Mesozoic records at a worldwide scale.

BHAT, M.S. & RAY, S. & DATTA, P.M. (2017): A new hybodont shark (Chondrichthyes, Elasmobranchii) from the Upper Triassic Tiki Formation of India with remarks on its dental histology and biostratigraphy. Journal of Paleontology, in press
New genus: Pristrisodus
Abstract: A new lonchidiid genus, Pristrisodus, from the Upper Triassic Tiki Formation of India is described based on multiple, well-preserved, isolated teeth. Comparative analysis resulted in synonymizing Parvodus tikiensis and Lissodus duffini, which are known from the same horizon and resulted in a new taxon, Pristrisodus tikiensis n. comb. These teeth are elongated with mesiodistal length greater than or equal to twice the labiolingual width and have a high principal cusp, lateral cusplets, a distinct ridge near the crown-root junction labially and higher up on the crown lingually, weak ornamentation, and linear depression along the crown-root junction. Five morphotypes based on overall shape, robustness and crown height are determined. The teeth show a gradual monognathic heterodonty. The anterolateral teeth (morphotypes I−II) have high, pyramidal principal cusp with two or three small but pointed cusplets, and triangular labial and lingual protuberance. The posterolateral teeth (morphotypes III−IV) have four incipient cusplets, relatively low principal cusp, bilobed/rounded, hanging labial and incipient lingual protuberances. Morphotype V comprises anterior teeth that are broad, triangular and robust, and have rounded/blunt principal cusp, one cusplet, and low, hanging labial peg. Multivariate analyses corroborate the qualitative assessment of the Indian hybodonts. Dental histology of Pristrisodus n. gen., shows that it is distinctly different from other lonchidiid genera. The assemblage of freshwater sharks, along with other vertebrate microfossils of the Tiki Formation, shows similarity with that of the lower Tecovas Formation of the Chinle Group, USA. The euryhaline nature resulted in the adaptation of the hybodonts to freshwater systems in India during the Carnian.

CHABAIN, J. & ANTOINE, P.-O. & ALTAMIRANO-SIERRA, A.J. & MARIVAUX, L. & PUJOS, F. & GISMONDIB, R.S. & ADNET, S. (2017): Cenozoic batoids from Contamana (Peruvian Amazonia) with focus on freshwater potamotrygonins and their paleoenvironmental significance. Geobios, in press
New species: Potamotrygon contamanensis, Potamotrygon rajachloeae, Potamotrygon canaanorum,
Abstract: Among the ichthyofaunal remains collected in the Tertiary deposits of Peruvian Amazonia, elasmobranchs show an unexpected richness of rays, consisting primarily of mostly potamotrygonins (river stingrays), but also pristids (sawfishes) and rhinopterids (cownose rays). Among the Potamotrygoninae subfamily and in addition to the middle Eocene Potamotrygon ucayalensis found in oldest levels, three new fossil species of Potamotrygon, namely P. contamanensis nov. sp., P. canaanorum nov. sp., and P. rajachloeae nov. sp. are described from late Oligocene-late Miocene deposits along the Quebrada Cachiyacu, near Contamana, Peru. These new fossils fill a substantial gap in the sporadic fossil record of this exclusive freshwater elasmobranch subfamily, native to South America, thereby highlighting their ancient biological and ecological diversity. In the absence of sharks, the occurrence of obligate freshwater potamotrygonins, along with additional marine to brackish batoids from nine successive fossiliferous levels, supports the predominance of fluvio-lacustrine environments in that region throughout the considered period, with a peak of marine influence around the middle-late Miocene transition, as recorded in other areas of Western Amazonia.

DUFFIN, C.J. & WARD, D.J. (2017): A new janassid petalodont chondrichthyan from the Early Carboniferous of Derbyshire, UK. Proceedings of the Geologists' Association, 128 (5–6): 809-814
New genus: Cypripediodens
New species: Cypripediodens cristatus
Abstract: The very small teeth of a new petalodont chondrichthyan are described from the Lower Carboniferous Eyam Limestone Formation (Peak Limestone Group, Carboniferous Limestone Supergroup; Brigantian, Early Carboniferous) of Derbyshire. Cypripediodens cristatus gen. et sp. nov. belongs to the Family Janassidae on the basis of the angle formed between the base and the crown. Presumed lower symphyseal teeth are Fissodus-like, possessing two labial cusps, whilst the rest of the dentition is relatively homodont. Individual crowns measure up to 1.3 mm labiolingually and possess a single labial cusp with virtually circular cross-section, separated from a prominent lingual cusp with circumferential cristae from which it is separated by a central trough.


TREVISAN, B. & PRIMON, J.F. & MARQUES, F.P.L. (2017): Systematics and diversification of Anindobothrium Marques, Brooks & Lasso, 2001 (Eucestoda: Rhinebothriidea). PLoS ONE, 12 (9): e0184632
New family: Anindobothriidae
New species: Anindobothrium inexpectatum, Anindobothrium carrioni
Abstract: Tapeworms of the genus Anindobothrium Marques, Brooks & Lasso, 2001 are found in both marine and Neotropical freshwater stingrays of the family Potamotrygonidae. The patterns of host association within the genus support the most recent hypothesis about the history of diversification of potamotrygonids, which suggests that the ancestor of freshwater lineages of the Potamotrygonidae colonized South American river systems through marine incursion events. Despite the relevance of the genus Anindobothrium to understand the history of colonization and diversification of potamotrygonids, no additional efforts were done to better investigate the phylogenetic relationship of this taxon with other lineages of cestodes since its erection. This study is a result of recent collecting efforts to sample members of the genus in marine and freshwater potamotrygonids that enabled the most extensive documentation of the fauna of Anindobothrium parasitizing species of Styracura de Carvalho, Loboda & da Silva, Potamotrygon schroederi Fernández-Yépez, P. orbignyi (Castelnau) and P. yepezi Castex & Castello from six different countries, representing the eastern Pacific Ocean, Caribbean Sea, and river basins in South America (Rio Negro, Orinoco, and Maracaibo). The newly collected material provided additional specimens for morphological studies and molecular samples for subsequent phylogenetic analyses that allowed us to address the phylogenetic position of Anindobothrium and provide molecular and morphological evidence to recognize two additional species for the genus. The taxonomic actions that followed our analyses included the proposition of a new family, Anindobothriidae fam. n., to accommodate the genus Anindobothrium in the order Rhinebothriidea Healy, Caira, Jensen, Webster & Littlewood, 2009 and the description of two new species—one from the eastern Pacific Ocean, A. carrioni sp. n., and the other from the Caribbean Sea, A. inexpectatum sp. n. In addition, we also present a redescription of the type species of the genus, A. anacolum (Brooks, 1977) Marques, Brooks & Lasso, 2001, and of A. lisae Marques, Brooks & Lasso, 2001. Finally, we discuss the paleogeographical events mostly linked with the diversification of the genus and the protocols adopted to uncover cryptic diversity in Anindobothrium.
KRITSKY, D.C. & BULLARD, S.A. & RUIZ, C.F. & WARREN, M.B. (2017):Empruthotrema longipenis n. sp (Monogenoidea: Monocotylidae: Merizocotylinae) from the olfactory sacs of the smooth butterfly ray Gymnura micrura (Bloch & Schneider) (Myliobatiformes: Gymnuridae) in the Gulf of Mexico. Systematic Parasitology, 94 (7): 777-784
New species: Empruthotrema longipenis
Abstract: A new species of Empruthotrema Johnston & Tiegs, 1922 is described based on specimens collected from the olfactory sacs of smooth butterfly rays Gymnura micrura(Bloch & Schneider) captured in Mobile Bay (northcentral Gulf of Mexico), Alabama, USA. Empruthotrema longipenis n. sp. is most similar to the type-species Empruthotrema raiae(MacCallum, 1916) Johnston & Tiegs, 1922 by having 12 marginal and two interhamular loculi with members of haptoral hook pair 1 located midway along the periphery of each interhamular loculus and those of hook pair 2 located at the marginal termini of the bilateral septa flanking the interhamular loculi. Empruthotrema longipenis n. sp. differs from E. raiae by having a much longer male copulatory organ and from its remaining congeners by the sinistral and extracecal ejaculatory bulb flanking the pharynx, the number of interhamular and marginal septa, and the distribution of hook pairs 1 and 2 along the haptoral margin. This is the first report of a monocotylid from the smooth butterfly ray and from Mobile Bay. The diversity of haptoral morphotypes among the currently accepted species of Empruthotrema is detailed and discussed in the context of monophyly of the genus.

 Extant Chondrichthyes:

YOKOTA, L. & DE CARVALHO, M.R. (2017): Taxonomic and morphological revision of butterfly rays of the Gymnura micrura (Bloch & Schneider 1801) species complex, with the description of two new species (Myliobatiformes: Gymnuridae). Zootaxa, 4332 (1): 1-74
New species: Gymnura lessae, Gymnura sereti
Abstract: An extensive taxonomic revision of Gymnura micrura based on external and internal morphology, and considering specimens from its entire geographical distribution in the Atlantic Ocean, is presented. Gymnura micrura is redescribed and a neotype is designated; its distributional range is limited to the Southwestern Atlantic. Two new species of butterfly rays are described: Gymnura lessae, sp. nov., occurring in the North and Central Western Atlantic, and Gymnura sereti, sp. nov., found in the Eastern Central Atlantic. The three species are morphologically very similar (with G. micruramost similar to G. lessae, sp. nov.) and cannot be distinguished based on the primary diagnostic characters typically utilized for butterfly rays. The dorsal color, smaller size and eventual presence of a dorsal fin in some males may be helpful to distinguish G. micrura, whereas the size and morphology of the clasper are the main external characters separating G. sereti, sp. nov., from the other two species, although the shape of disc (especially among adult males) and contour of the lower lip are also helpful. Despite the skeleton being conservative among the species, we found consistent variations that support the validity of the new species described. Due to similarity in external morphology these internal characters were fundamental to discriminate the new species. The scapulocoracoid was an important diagnostic skeletal structure, exhibiting a series of variations that separated the three species. Variations in the synarcual, outline of the dorsal cranial fontanelle, number and shape of mesopterygia, and small differences in the mandibular arches and pelvic girdle were useful to diagnose G. sereti, sp. nov. The contour of the hyomandibula was an important diagnostic character distinguishing G. lessae, sp. nov., from the other two species. Meristic data were also useful, with G. sereti, sp. nov.,presenting a lower number of radials in the second element of the mesopterygium and a higher number of diplospondylous vertebrae. In contrast, G. lessae, sp. nov., presented a higher number of pectoral-fin radials. Subtle, but consistent differences, were also found in the design of the ventral lateral-line system. A Canonical Discriminant Analysis provides strong statistical support for the validity of the new species, significantly distinguishing the three species groupings (p < 0.00001). External morphology, ventral lateral-line system and skeleton are described and illustrated for all three valid species.

PLEASE send your new papers tojuergen.pollerspoeck@shark-references.comor nicolas.straube@shark-references.com   

Latest Research Articles

Extant Chondrichthyes:
ALFARO-CORDOVA, E. & DEL SOLAR, A. & ALFARO-SHIGUETO, J. & MANGEL, J.C. & DIAZ, B. & CARRILLO, O. & SARMIENTO, D. (2017) Captures of manta and devil rays by small-scale gillnet fisheries in northern Peru. Fisheries Research, 195: 28-36 http://dx.doi.org/10.1016/j.fishres.2017.06.012
AMARAL, C.R.L. & PEREIRA, F. & SILVA, D.A. & AMORIM, A. & DE CARVALHO, E.F. (2017) The mitogenomic phylogeny of the Elasmobranchii (Chondrichthyes). Mitochondrial DNA, A DNA Mapping, Sequencing, and Analysis, 20: 1-12 http://dx.doi.org/10.1080/24701394.2017.1376052
BARNETT, A. & BRACCINI, M. & DUDGEON, C.L. & PAYNE, N.L. & ABRANTES, K.G. & SHEAVES, M. & SNELLING, E.P.  (2017) The utility of bioenergetics modelling in quantifying predation rates of marine apex predators: Ecological and fisheries implications. Scientific Reports, 7: 12982 http://dx.doi.org/10.1038/s41598-017-13388-y
BRIONES, A. & AGUILAR, C.M. & GONZALEZ-SANSON, G. (2017) Shrimp trawling bycatch of ray Hypanus americanus (Elasmobranchii) in the southeastern region of Cuba. Latin American Journal of Aquatic Research, 45 (4): 840-845 http://dx.doi.org/10.3856/vol45-issue4-fulltext-22
BURGESS, M.H.J.C. & CRAWFORD, S.S. (2017) When our fascination with sharks was new. Environmental Biology of Fishes, 100 (9): 1145-1153 http://dx.doi.org/10.1007/s10641-017-0627-9
CARDEÑOSA, D. & FIELDS, A. & ABERCROMBIE, D. & FELDHEIM, K. & SHEA, S.K.H. & CHAPMAN, D.D.  (2017) A multiplex PCR mini-barcode assay to identify processed shark products in the global trade. PLoS ONE, 12 (10): e0185368 http://dx.doi.org/10.1371/journal.pone.0185368
CHENG, D. & CHEN, Y. & LU, C. & QIAN, Y. & LV, Z. (2017) Preliminary profiling of microRNA in the normal and regenerating liver of Chiloscyllium plagiosum. Comparative Biochemistry and Physiology Part D Genomics and Proteomics, 24: 60-67 http://dx.doi.org/10.1016/j.cbd.2017.06.003
CONWAY, J.N. & MCFEE, W.E. (2017) Ingestion of Stingrays (Dasyatis spp.) by a Common Bottlenose Dolphin (Tursiops truncatus). Aquatic Mammals, 43 (3): 229-232 http://dx.doi.org/10.1578/am.43.3.2017.229
CRESSEY, D. (2017) Sharks can live a lot longer than researchers realized. Nature, 549 (7672): 316-317 
CRUZ-RAMIREZ, A. & LINAN-CABELLO, M.A. & TAVARES, R. & SANTANA-HERNANDEZ, H. & PEREZ-MORALES, A. (2017) Oxidative stress and RNA/DNA ratio following longline capture in the silky shark Carcharhinus falciformis (Müller & Henle, 1839). Latin American Journal of Aquatic Research, 45 (4): 846-851 http://dx.doi.org/10.3856/vol45-issue4-fulltext-23
CULP, B.E. & HAULENA, M. & BRITT, K. & EVANS, H. & RAVERTY, S. (2017) Squamous cell carcinoma of the rostral maxilla in an adult captive Whitespotted Bamboo Shark (Chiloscyllium plagiosum). Journal of Zoo and Wildlife Medicine, 48 (3): 902-905 http://dx.doi.org/10.1638/2016-0154.1
DE WYSIECKI, A.M. & BRACCINI, J.M. (2017) Shark length–length relationships: Studying morphology allows the detection of bias in routine fisheries sampling. Regional Studies in Marine Science, 16: 290–293 http://dx.doi.org/10.1016/j.rsma.2017.10.005
DÍAZ-JAIMES, P. & BONFIL, R. & PALACIOS-BARRETO, P. & BOLAÑO-MARTINEZ, N. & BAYONA-VÁSQUEZ, N.J. (2017) Mitochondrial genome of the critically endangered smalltooth sawfish Pristis pectinata from Veracruz, Mexico. Conservation Genetics Resources, in press http://dx.doi.org/10.1007/s12686-017-0896-9
DÍEZ, G. & MUGERZA, E. (2017) The first record of the sicklefin chimaera Neoharriotta pinnata (Chimaeriformes: Rhinochimaeridae) in the southern Bay of Biscay (North-East Atlantic). Journal of Ichthyology, 57 (5): 776–779 http://dx.doi.org/10.1134/S0032945217050046
ENGELBRECHT, T. & KOCK, A. & WARIES, S. & O‘RIAIN, M.J. (2017) Shark Spotters: Successfully reducing spatial overlap between white sharks (Carcharodon carcharias) and recreational water users in False Bay, South Africa. PLoS ONE, 12 (9): e0185335 http://dx.doi.org/10.1371/journal.pone.0185335
FAHMIA & EBERT, D.A. (2017) First Record of Blurred Smooth Lanternshark, Etmopterus bigelowi from Indonesia. Journal of Ichthyology, 57 (5): 780–786 http://dx.doi.org/10.1134/S0032945217050058
FUJINAMI, Y. & SEMBA, Y. & OKAMOTO, H. & OHSHIMO, S. & TANAKA, S. (2017) Reproductive biology of the blue shark (Prionace glauca) in the western North Pacific Ocean. Marine and Freshwater Research, 68 (11): 2018-2027 http://dx.doi.org/10.1071/MF16101
GALLAGHER, A.J. & SKUBEL, R.A. & PETHYBRIDGE, H.R. & HAMMERSCHLAG, N. (2017) Energy metabolism in mobile, wild-sampled sharks inferred by plasma lipids. Conservation Physiology, 5(1): cox002 http://dx.doi.org/10.1093/conphys/cox002
GIACOMIN, M. & SCHULTE, P.M. & WOOD, C.M. (2017) Differential Effects of Temperature on Oxygen Consumption and Branchial Fluxes of Urea, Ammonia, and Water in the Dogfish Shark (Squalus acanthias suckleyi). Physiological and Biochemical Zoology, 90 (6): 627-637 http://dx.doi.org/10.1086/694296
GRIGOROV, I.V. & BAITALYUK, A.A. & ORLOV, A.M. (2017) Spatial distribution, size composition, and dynamics of catches of the Okhotsk skate Bathyraja violacea in the North Pacific Ocean. Journal of Ichthyology, 57 (5): 706–720 http://dx.doi.org/10.1134/S0032945217050071
HAMMERSCHLAG, N. & GUTOWSKY, L.F.G. & GALLAGHER, A.J. & MATICH, P. & COOKE, S.J. (2017) Diel habitat use patterns of a marine apex predator (tiger shark, Galeocerdo cuvier) at a high use area exposed to dive tourism. Journal of Experimental Marine Biology and Ecology, 495: 24-34 http://dx.doi.org/10.1016/j.jembe.2017.05.010
HYLTON, S. & WHITE, W.T. & CHIN, A. (2017) The sharks and rays of the Solomon Islands: a synthesis of their biological diversity, values and conservation status. Pacific Conservation Biology, in press http://dx.doi.org/10.1071/PC17012
JAWAD, L.A. (2017) Dangerous Fishes of the Eastern and Southern Arabian Peninsula. Springer International Publishing AG 2018, ISBN 978-3-319-57924-5 http://dx.doi.org/10.1007/978-3-319-57926-9
JUHEL, J.-B. & VIGLIOLA, L. & MOUILLOT, D. & KULBICKI, M. & LETESSIER, T.B. & MEEUWIG, J.J. & WANTIEZ, L. (2017) Reef accessibility impairs the protection of sharks. Journal of Applied Ecology, in press http://dx.doi.org/10.1111/1365-2664.13007
JURADO, C.D. & MABRAGANA, E. & DE ASTARLOA, J.M.D. (2017) Morphological variation in a conservative structure: the scapulocoracoids in Sympterygia acuta Garman, 1837 and Sympterygia bonapartii Muller & Henle, 1841 (Chondrichthyes: Rajidae). Zootaxa, 4318 (1): 157-166 http://dx.doi.org/10.11646/zootaxa.4318.1.8
KESSEL, S.T. & FRASER, J. & VAN BONN, W.G. & BROOKS, J.L. & GUTTRIDGE, T.L. & HUSSEY, N.E. & GRUBER, S.H. (2017) Transcoelomic expulsion of an ingested foreign object by a carcharhinid shark. Marine and Freshwater Research, 68 (11): 2173-2177 http://dx.doi.org/10.1071/MF17022
LOVEJOY, D.A. & MICHALEC, O.M. & HOGG, D.W. & WOSNICK, D.I. (2017) Role of elasmobranchs and holocephalans in understanding peptide evolution in the vertebrates: lessons learned from gonadotropin releasing hormone (GnRH) and corticotropin releasing factor (CRF) phylogenies. General and Comparative Endocrinology, in press http://dx.doi.org/10.1016/j.ygcen.2017.09.013
LTEIF, M. & MOUAWAD, R. & KHALAF, G. & LENFANT, P. & SERÉT, B. & VERDOIT-JARRAYA, M. (2017) Population biology of the little gulper shark Centrophorus uyato in Lebanese waters. Journal of Fish Biology, in press http://dx.doi.org/10.1111/jfb.13484
MACDONALD, C. & GALLAGHER, A.J. & BARNETT, A. & BRUNNSCHWEILER, J. & SHIFFMAN, D.S. & HAMMERSCHLAG, N. (2017) Conservation potential of apex predator tourism. Biological Conservation, 215: 132-141 http://dx.doi.org/10.1016/j.biocon.2017.07.013
MOHAN, J.A. & TINHAN, T.C. & MILLER, N.R. & WELLS, R.J.D. (2017) Effects of sample cleaning and storage on the elemental composition of shark vertebrae. Rapid Communications in Mass Spectrometry, in press http://dx.doi.org/10.1002/rcm.7998
MORGAN, D.L. & EBNER, B.C. & ALLEN, M.G. & GLEISS, A.C. & BEATTY, S.J. & WHITTY, J.M. (2017) Habitat use and site fidelity of neonate and juvenile green sawfish Pristis zijsron in a nursery area in Western Australia. Endangered Species Research, 34: 235-249 http://dx.doi.org/10.3354/esr00847
MOYA, A.C. & WEHITT, A. & DÍAZ ANDRADE, M.C. & DI GIACOMO, E.E. & GALÍNDEZ, E.J. (2017) Female reproductive traits of a commercially exploited skate: Atlantoraja platina (Günther, 1880) (Chondrichthyes, Rajidae). Ovarian morphology, gametogenesis and microscopic verification of maturity criteria. Micron, 101: 232-240 http://dx.doi.org/10.1016/j.micron.2017.08.001
NEVATTE, R.J. & WUERINGER, B.E. & JACOB, D.E.  & PARK, J.M. & WILLIA, J.E. (2017) First insights into the function of the sawshark rostrum through examination of rostral tooth microwear. Journal of Fish Biology, in press http://dx.doi.org/10.1111/jfb.13467
NIELLA, Y.V. & AFONSO, A.S. & HAZIN, F.H.V. (2017) Bioecology and movements of bull sharks, Carcharhinus leucas , caught in a long-term longline survey off northeastern Brazil. Neotropical Ichthyology, 15 (3): e170106 http://dx.doi.org/10.1590/1982-0224-20170106
ONG, M.C. & GAN, S.L. (2017) Assessment of metallic trace elements in the muscles and fins of four landed elasmobranchs from Kuala Terengganu Waters, Malaysia. Marine Pollution Bulletin, in press http://dx.doi.org/10.1016/j.marpolbul.2017.08.019
RAMSAY, J.B. & WILGA, C.D. (2017) Function of the hypobranchial muscles and hyoidiomandibular ligament during suction capture and bite processing in white-spotted bamboo sharks, Chiloscyllium plagiosum. Journal of Experimental Biology, in press http://dx.doi.org/10.1242/jeb.165290
REINERO, F.R. & MICARELLI, P. & BARCA, D. & MILAZZO, C. & GIGLIO, G. & BECERRIL GARCIA, E.E. & MARCHIO, C. & MINERVINO, M. & TORALDO SERRA, M.L. & TRIPEPI, S. & SPERONE, E. (2017) A Pilot project for reconstructing life history traits of a population of Scyliorhinus canicula (Linnaeus, 1758). Abstract. EEA 2017, Amsterdam 
RODRÍGUEZ, C. & LORENZALE, M. & LÓPEZ-UNZU, M.A. & FERNÁNDEZ, B. & SALMERÓN, F. & SANS-COMA, V. & DURÁN, A.C. (2017) The bulbus arteriosus of the holocephalan heart: gross anatomy, histomorphology, pigmentation, and evolutionary significance. Zoology, in press http://dx.doi.org/10.1016/j.zool.2017.05.008
ROGERS, T.D. & CAMBIÈ, G. & KAISER, M.J. (2017) Determination of size, sex and maturity stage of free swimming catsharks using laser photogrammetry. Marine Biology, 164: 213 http://dx.doi.org/10.1007/s00227-017-3241-7
SALDANA-RUIZ, L.E. & SOSA-NISHIZAKI, O. & CARTAMIL, D. (2017) Historical reconstruction of Gulf of California shark fishery landings and species composition, 1939-2014, in a data-poor fishery context. Fisheries Research, 195: 116-129 http://dx.doi.org/10.1016/j.fishres.2017.07.011
SIGSGAARD, E.E. & NIELSEN, I.B. & BACH, S.S. & LORENZEN, E.D. & ROBINSON, D.P. & KNUDSEN, S.W. & PEDERSEN, M.W. & JAIDAH, M.A. & ORLANDO, L. & WILLERSLEV, E. & MØLLER, P.R. & THOMSEN, P.F. (2017) Population characteristics of a large whale shark aggregation inferred from seawater environmental DNA. Nature Ecology & Evolution, 1: 0004 http://dx.doi.org/10.1038/s41559-016-0004
TOMITA, T. & NOZU, R. & NAKAMURA, M. & MATSUZAKI, S. & MIYAMOTO, K. & SATO, K. (2017) Live-bearing without placenta: Physical estimation indicates the high oxygen-supplying ability of white shark uterus to the embryo. Scientific Report, 7 (1): 11744 http://dx.doi.org/10.1038/s41598-017-11973-9
TRAVE, C. & BRUNNSCHWEILER, J. & SHEAVES, M. & DIEDRICH, A. & BARNETT, A. (2017) Are we killing them with kindness? Evaluation of sustainable marine wildlife tourism. Biological Conservation, 209: 211-222 http://dx.doi.org/10.1016/j.biocon.2017.02.020
TUXBURY, K.A. & YOUNG, S.A. & BRADWAY, D.S. & MAROLA, J.L. & SALFINGER, M. & GARNER, M.M. (2017) Acute disseminated mycobacteriosis in captive Atlantic guitarfish ( Rhinobatos lentiginosus). Journal of veterinary diagnostic investigation, in press http://dx.doi.org/10.1177/1040638717721731
VELLA, A. & VELLA, N. & SCHEMBRI, S. (2017) A molecular approach towards taxonomic identification of elasmobranch species from Maltese fisheries landings. Marine Genomics, in press http://dx.doi.org/10.1016/j.margen.2017.08.008
YOKOTA, L. & DE CARVALHO, M.R. (2017) Taxonomic and morphological revision of butterfly rays of the Gymnura micrura (Bloch & Schneider 1801) species complex, with the description of two new species (Myliobatiformes: Gymnuridae). Zootaxa, 4332 (1): 1-74 http://dx.doi.org/10.11646/zootaxa.4332.1.1
ZACCARONI, A. & PEREZ-LOPEZ, M. & DE LA CASA RESINO, I. & MEDRI, G. & CENERI, F. & BERTINI, S. & MORDENTI, O. & CORTINOVIS, L. & SIRRI, R. & MANDRIOLI, L. (2017) Alteration in blood parameters by enrofloxacin in juvenile lesser spotted dogfish (Scyliorhinus canicula, Linnaeus, 1758) after intramuscular injection. Research in Veterinary Science, 113: 1-4 http://dx.doi.org/10.1016/j.rvsc.2017.08.005

Extinct Chondrichthyes:
BHAT, M.S. & RAY, S. & DATTA, P.M. (2017) A new hybodont shark (Chondrichthyes, Elasmobranchii) from the Upper Triassic Tiki Formation of India with remarks on its dental histology and biostratigraphy. Journal of Paleontology, in press http://dx.doi.org/10.1017/jpa.2017.63
CHABAIN, J. & ANTOINE, P.-O. & ALTAMIRANO-SIERRA, A.J. & MARIVAUX, L. & PUJOS, F. & GISMONDIB, R.S. & ADNET, S. (2017) Cenozoic batoids from Contamana (Peruvian Amazonia) with focus on freshwater potamotrygonins and their paleoenvironmental significance. Geobios, in press http://dx.doi.org/10.1016/j.geobios.2017.10.003
COOPER, J. (2017) The palaeontology of the London Clay (Lower Eocene) of the Herne Bay coastal section, Kent, England. Proceedings of the Geological Association, 88 (3): 163–178 http://dx.doi.org/10.1016/S0016-7878(77)80025-4
DUFFIN, C.J. & WARD, D.J. (2017) A new janassid petalodont chondrichthyan from the Early Carboniferous of Derbyshire, UK. Proceedings of the Geologists’ Association, 128 (5–6): 809-814 http://dx.doi.org/10.1016/j.pgeola.2017.06.008
GINTER, M. & GOUWY, S. & GOOLAERTS, S. (2017) A classic Late Frasnian chondrichthyan assemblage from southern Belgium. Acta Geologica Polonica, 67 (3): 381-392 http://dx.doi.org/10.1515/agp-2017-0017
GUINOT, G. & CARRILLO-BRICEÑO, J. (2017) Lamniform sharks from the Cenomanian (Upper Cretaceous) of Venezuela. Cretaceous Research, in press http://dx.doi.org/10.1016/j.cretres.2017.09.021
LADWIG, J. (2017) Zähne des Hais Anomotodon plicatus ARAMBOURG, 1952 aus den Schreibkreidegruben von Lägerdorf und Kronsmoor (Schleswig-Holstein). Arbeitskreis Paläontologie Hannover, 45: 112–117
PEREZ, V.J. & MARKS, K.W. (2017) The first documented fossil records of Isistius and Squatina (Chondrichthyes) from Florida, with an overview of the associated vertebrate fauna. Bulletin of the Florida Museum of Natural History, 55 (7): 139–155


BOWATER, R.O. & DENNIS, M.M. & BLYDE, D. & STONE, B. & BARNES, A.C. & DELAMARE-DEBOUTTEVILLE, J. & HORTON, M.A. & WHITE, M. & CONDON, K. & JONES, R. (2017) Epizootics of Streptococcus agalactiae infection in captive rays from Queensland, Australia. Journal of Fish Diseases, in press http://dx.doi.org/10.1111/jfd.12701
CRIBB, T.H. & CHICK, R.C. & O'CONNOR, W. & O'CONNOR, S. & JOHNSON, D. & SEWELL, K.B. & CUTMORE, S.C. (2017) Evidence that blood flukes (Trematoda: Aporocotylidae) of chondrichthyans infect bivalves as intermediate hosts: indications of an ancient diversification of the Schistosomatoidea. International Journal for Parasitology, in press http://dx.doi.org/10.1016/j.ijpara.2017.05.008
IRIGOITIA, M.M. & INCORVAIA, I.S. & TIMI, J.T. (2017) Evaluating the usefulness of natural tags for host population structure in chondrichthyans: Parasite assemblages of Sympterygia bonapartii (Rajiformes: Arhynchobatidae) in the Southwestern Atlantic. Fisheries Research, 195: 80-90 http://dx.doi.org/10.1016/j.fishres.2017.07.006
PODDUBNAYA, L.G. & HEMMINGSEN, W. & GIBSON, D.I. (2017) The unique uterine structure of the basal monogenean Chimaericola leptogaster (Monogenea: Polyopisthocotylea), an ectoparasite of the relictual holocephalan fish Chimaera monstrosa. Parasitology Research, 116 (10): 2695-2705 http://dx.doi.org/10.1007/s00436-017-5578-8
SHAMSI, S. & BRIAND, M.J. & JUSTINE, J.L. (2017) Occurrence of Anisakis (Nematoda: Anisakidae) larvae in unusual hosts in Southern hemisphere. Parasitology International, in press http://dx.doi.org/10.1016/j.parint.2017.08.002
TREVISAN, B. & PRIMON, J.F. & MARQUES, F.P.L. (2017) Systematics and diversification of Anindobothrium Marques, Brooks & Lasso, 2001 (Eucestoda: Rhinebothriidea). PLoS ONE, 12 (9): e0184632 http://dx.doi.org/10.1371/journal.pone.0184632



Bite on this: Alligators caught eating sharks

Jaws, beware! Alligators may be coming for you. A new study documents American alligators on the Atlantic and Gulf coasts are eating small sharks and stingrays. This is the first scientific documentation of a widespread interaction between the two predators.