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Distribution, site affinity and regional movements of the manta ray, Manta alfredi (Krefft, 1868), along the east coast of Australia
Published on 24 June 2011. Lydie I. E. Couturier, Fabrice R. A. Jaine , Kathy A. Townsend, Scarla J. Weeks, Anthony J. Richardson and Michael B. Bennett. ABSTRACT: Despite the increasing tourism interest worldwide for the manta ray, Manta alfredi, very little is known about its biology and ecology. Knowledge of its distribution and movement
Long-term membership of whale sharks (Rhincodon typus) in coastal aggregations in Seychelles and Djibouti
Published on 24 June 2011. David Rowat, Katie Brooks, Abi March, Ciara McCarten, Daniel Jouannet, Luke Riley, Gareth Jeffreys, Morgan Perri, Michel Vely and Bruno Pardigon. ABSTRACT: In coastal waters of several locations globally, whale sharks (Rhincodon typus) form seasonal aggregations, most of which largely comprise juvenile males of 4–8 m length. Evaluation of the period
Pop-up archival satellite tagging of Carcharias taurus: movements and depth/temperature-related use of south-eastern Australian waters
Published on 24 June 2011. N. M. Otway and M. T. Ellis. ABSTRACT: Knowledge of migratory movements and depth/temperature-related use of coastal waters by sharks can lead to more sustainable fisheries and assist in managing the long-term conservation of those species now considered threatened. Pop-up archival satellite tags (PATs) provide an alternative to conventional tagging
Sex- and maturity-based differences in movement and migration patterns of grey nurse shark, Carcharias taurus, along the eastern coast of Australia
Published on 24 June 2011. C. S. Bansemer and M. B. Bennett. ABSTRACT: Photo-identification techniques were used to investigate temporal and spatial distributions of Carcharias taurus (Rafinesque, 1810) in relation to maturity, sex and pregnancy status at 19 sites along Australia’s eastern coastline. Of 931 individual sharks identified between 2004 and 2008, 479 were female
Distribution, reproduction and population structure of three gulper sharks (Centrophorus, Centrophoridae) in south-east Australian waters
Published on 24 June 2011 K. J. Graham and R. K. Daley. ABSTRACT: Gulper sharks (Centrophorus spp.) are commercially fished in all oceans but the taxonomy and biology of many species are not clearly defined, and stocks are extremely vulnerable to over-exploitation. We present distributional, size-frequency and reproductive data for three species (Centrophorus harrissoni, C.
Uterine fluid composition of the dwarf ornate wobbegong shark (Orectolobus ornatus) during gestation
Published on 24 June 2011 Megan T. Ellis and Nicholas M. Otway . ABSTRACT: Low fecundity in chondrichthyans makes them extremely susceptible to fishing, so understanding the various reproductive strategies in this group is vital for management. Knowledge of the uterine fluid (UF) composition throughout gestation is fundamental to this understanding, yet is restricted to
Does more maternal investment mean a larger brain? Evolutionary relationships between reproductive mode and brain size in chondrichthyans
Published on 24 June 2011 Christopher G. Mull, Kara E. Yopak and Nicholas K. Dulvy. ABSTRACT: Chondrichthyans have the most diverse array of reproductive strategies of any vertebrate group, ranging from egg-laying to live-bearing with placental matrotrophy. Matrotrophy is defined as additional maternal provisioning beyond the yolk to the developing neonate; in chondrichthyans, this occurs
A comparison of reproductive parameters of the Bering skate, Bathyraja interrupta, from two Alaskan large marine ecosystems
Published on 24 June 2011. Shaara M. Ainsley, David A. Ebert and Gregor M. Cailliet. ABSTRACT: Estimates of size at maturity are crucial to fisheries stock assessments and may change spatially and temporally. This study directly compares life-history characteristics of a skate species in two large marine ecosystems in a region where there is both
Age, growth and genetic status of the white shark (Carcharodon carcharias) from Kashima-nada, Japan
Published on 24 June 2011. S. Tanaka , T. Kitamura , T. Mochizuki and K. Kofuji. ABSTRACT: The white shark, a top predator inhabiting the world’s oceans, is an endangered species. However, knowledge of its life-history traits and population structure is still limited. We hypothesised that life-history traits would vary among populations because the species’
Distribution, habitat and biology of a rare and threatened eastern Australian endemic shark: Colclough’s shark, Brachaelurus colcloughi Ogilby, 1908
Published on 24 June 2011. Peter M. Kyne , Leonard J. V. Compagno, Joanna Stead , Micha V. Jackson and Michael B. Bennett. ABSTRACT: Despite increasing research effort and conservation focus on sharks, small species of little commercial value are often overlooked, although they make a considerable contribution to global diversity. The poorly known Colclough’s
The importance of research and public opinion to conservation management of sharks and rays: a synthesis
Published in June 2011 C. A. Simpfendorfer, M. R. Heupel, W. T. White and N. K. Dulvy ABSTRACT: Growing concern for the world’s shark and ray populations is driving the need for greater research to inform conservation management. A change in public perception, from one that we need to protect humans from sharks to one
Deep-Sea Shark Species for Consideration of a Cites Listing
Published on 22 Jul, 2011 at 19:02 in Conservation & Fishery, Documents / PDF, Front Page, Publications | Viewed times | No Comments
Twenty-fifth meeting of the Animals Committee Geneva, (Switzerland), 18-22 July 2011 DEEP-SEA SHARK SPECIES FOR CONSIDERATION OF A CITES LISTING This information document (link to pdf below) has been submitted by the CITES Secretariat at the request of the Pew Environment Group. Deep-sea shark species are extremely vulnerable to overexploitation, deep-sea fisheries are largely unregulated,
Discussion paper for Grey Nurse Shark Protection in NSW Australia
Published on 20 Jul, 2011 at 18:43 in Documents / PDF, Front Page, Publications | Viewed times | No Comments
Published in May 2011 by NSW Government – Department of Primary Industries. This discussion paper has been prepared to form the basis for community consultation on the future of grey nurse shark protection arrangements in NSW. The paper reviews the conservation history and status of grey nurse sharks and sets out some of the current
CITES Sharks on the Agenda of the 25th Meeting of the Animals Committee
Published on 18 Jul, 2011 at 19:27 in Documents / PDF, Front Page, Publications | Viewed times | No Comments
19 July 2011 Twenty-fifth meeting of the Animals Committee Geneva (Switzerland), 18-22 July 2011 Links to PDF-Downloads : Conservation and management of sharks Report on the implementation of NPOA-Sharks and regional plans, and on relevant information from the range States. Annex 2 (in the language in which the documents were submitted): Annex 2 –
CMS: Proposal for Inclusion of Giant Manta Ray in Appendix I and II
Published on 16 Jul, 2011 at 19:44 in Documents / PDF, Front Page, Publications | Viewed times | No Comments
Conference of the Parties to CMS November 2011, Bergen, Norway. the Government of Ecuador has submitted the following proposal for amendment