Scientific Papers

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Distribution, site affinity and regional movements of the manta ray, Manta alfredi (Krefft, 1868), along the east coast of Australia

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

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

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

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

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

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

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

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

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

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

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

Reef-use and residency patterns of a baited population of silky sharks, Carcharhinus falciformis, in the Red Sea

Reef-use and residency patterns of a baited population of silky sharks, Carcharhinus falciformis, in the Red Sea

Published on 24 June 2011. C. Clarke, J. S. E. Lea, R. F. G. Ormond. ABSTRACT: Many shark populations are experiencing critical declines from overfishing, triggering potentially detrimental cascade effects on marine ecosystems. Silky sharks, Carcharhinus falciformis, have experienced some of the most severe declines, yet little information exists on their behavioural ecology to inform

Rediscovery and redescription of the smoothtooth blacktip shark, Carcharhinus leiodon (Carcharhinidae), from Kuwait, with notes on its possible conservation status

Rediscovery and redescription of the smoothtooth blacktip shark, Carcharhinus leiodon (Carcharhinidae), from Kuwait, with notes on its possible conservation status

Published on 24 June 2011 Alec B. M. Moore, William T. White, Robert D. Ward, Gavin J. P. Naylor, Richard Peirce. ABSTRACT: The smoothtooth blacktip shark, Carcharhinus leiodon, is one of the rarest whaler shark species of the genus Carcharhinus, previously known only from the holotype collected over 100 years ago from the Arabian Sea

Business partner or simple catch? The economic value of the sicklefin lemon shark in French Polynesia

Business partner or simple catch? The economic value of the sicklefin lemon shark in French Polynesia

Published on 24 June 2011. E. Clua, N. Buray, P. Legendr, J. Mourier, S. Planes. ABSTRACT: Most arguments invoked so far by the scientific community in favour of shark conservation rely on the ecological importance of sharks, and have little impact on management policies. During a 57-month study, we were able to individually recognise 39

Killing for conservation the need for alternatives to lethal sampling of apex predatory sharks

Killing for conservation the need for alternatives to lethal sampling of apex predatory sharks

Published on 22. June 2011 Neil Hammerschlag, James Sulikowski. ABSTRACT: Top oceanic predators, especially large predatory sharks (TOPS), appear to be experiencing varying degrees of population declines. Life history data (e.g. diet, reproductive status, age and growth, mortality) are critical for developing effective conservation strategies for TOPS. Presently, lethal sampling remains the most effective and

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