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VOLUME TWENTY EIGHT JANUARY 2015 NUMBER ONE UPDATES & ANNOUNCEMENTS On lobsters, coral reefs, and mariachis: An overview of the 10th ICWL From: Patricia Briones-Fourzán & Enrique Lozano-Álvarez Te 10th International Conference and Workshop on Lobster Biology and Management (ICWL) was held in Cancún, Mexico, 18–23 May 2014. Tis was the first ICWL ever held in Mexico. Te Iberostar Cancún Hotel proved to be a great choice of venue, featuring a very nice conference center with a stunning view and several restaurants and bars that provided many opportunities for social interactions. In total, there were 182 registered participants from 24 countries of origin. A special mention is due to Bruce Phillips, who convened the first ICWL in Perth, Australia, in 1976 and has since atended all other ICWLs, and to Ray George, who at 85 made the long trip from Albany (Western Australia) to Cancún so as not to miss the 10th ICWL! Te Meet & Greet was held Sunday evening and provided an opportunity to, well, greet old friends and meet new people in a relaxed atmosphere. Te conference was officially opened on Monday morning by Dr. Elva Escobar, Director of the Institute of Marine Sciences and Limnology of Universidad Nacional Autónoma de México, and the atendees were welcomed by Dr. Anastazia Banaszak, Head of the Reef Systems Unit at Puerto Morelos. Mark Butler presented the Paul Kanciruk Student Travel Award to the two winners, David Ernst (University of North Carolina, USA) and Gudjon Mar Sigurdsson (University of New Brunswick, Canada). Afer the opening ceremony, Bruce Phillips and Mónica Pérez-Ramírez delivered a plenary talk on the main conference topic, “Lobsters in a Changing Climate”. Troughout the week, four additional plenary talks were given by Rick Wahle (“Te American Lobster – Poster child of a changing ecosystem”), Ehud Spanier and Kari Lavalli (“History of utilization of lobsters by humans”), Jim Penn (“Research for management of lobster fisheries, its history, recent developments and future challenges”), and Juan Carlos Seijo (“Individual fishing grounds in the community co-managed spiny lobster fishery of Punta Allen, México: Lessons learned”). All five plenary talks atracted lots of atendants and set the stage for five days full of interesting lobster presentations. Te Lobster Newsleter Volume 28, Number 1: January 2015 &1 VOLUME TWENTY EIGHT JANUARY 2015 NUMBER ONE Tere were 200 presentations (133 oral and 67 posters) in 14 sessions divided into two concurrent streams. [Summarized in later sections of this issue. -ed.] It was mainly thanks to the work and e'ort of the session chairs that the conference ran without a glitch! Te poster session was held on Tuesday evening, with 67 posters and a full atendance. Te atmosphere was lively and friendly, with tasty hors d’oeuvres and lots of wine, margaritas, and mojitos. On Wednesday, afer the morning session and group photos (taken under an overcast sky), about 100 participants got on several buses to the nearby Puerto Morelos Coral Reefs Natural Protected Area for the free afernoon activity. Luckily, the rain stopped just in time and afer a short boat trip they all donned their masks and snorkels and jumped into the water to skin dive in the coral reefs in order to observe the local marine fauna, including a few spiny lobsters. Upon returning to the coast, we all enjoyed a lovely afernoon with plenty of beer and tequila and a wonderful lobster meal in a peaceful, beautiful beach seting. Tis was certainly one of the highlights of the conference. Another highlight was the o$cial conference dinner on Tursday evening, which, of course, featured lobster tails. Before dinner was served, and with David Díaz acting as o$cial ra(e aide, items donated by participants were ra(ed to help replenish the Paul Kanciruk Student Travel Award. A beautifully handcrafed botle of Tequila, probably the most coveted prize, went to Kathy Castro. During dinner, a folkloric ballet company performed several colorful and lively dances from di'erent regions of Mexico, accompanied by a Mariachi group unusually led by a lady. To wrap up their performance, the dancers invited some atendees to dance “La Raspa”, a prety energetic dance with much hopping, spinning, and clapping. To keep the evening’s energy going, the Mexican students asked the audio technician to plug in one of their mp3 devices —turning him into an improvised DJ— and performed an impromptu group dance. Just about everybody jumped to the )oor to dance salsas and other tropical rhythms until it was time to go. Tat was fun! Te closing ceremony was on Friday afernoon. Tere was a tribute to Ehud Spanier organized by his long-time collaborators and friends Kari Lavalli and Jason Goldstein, which included a hilarious video and PowerPoint presentation on Ehud’s accomplishments (which, seriously, are prety extensive). Aferwards, a summary of the conference was delivered, showing that 36 species of lobsters were featured in the presentations, and con"rming that the proceedings of the 10th ICWL would appear in 2015 as a supplementary issue of the ICES Journal of Marine Science with selected papers from the conference. Ten the awards for Best Student’s Oral and Poster Presentation were given, respectively, to Tonje Knutsen Sørdalen (University of Agder, Norway) and Miriam Palestina Martínez (Universidad Nacional Autónoma de México). Each Award consisted of the 2013 lobster book edited by Bruce Phillips, donated by Wiley-Blackwell, and a cash prize donated by the Latin-American Association of Carcinology (ALCARCINUS) and the Mexican Academy of Sciences. We hope that these awards, together with the Paul Kanciruk Travel Award, will continue to be presented in future ICWLs so as to encourage many students from all over the world to atend these conferences. Finally, it was time to hand over the Conference Plaque to the conveners of the 11th ICWL, Rick Wahle, Jason Goldstein, and Kari Lavalli! We could not have held this conference without sponsors, so we sincerely thank our major sponsors UNAM and CONACYT, platinum sponsors INAPESCA and ChakTunChe Arts & Crafs, gold sponsors OLRAC SPS (South Africa) and Colectividad RAZONATURA, silver sponsors Clearwater Seafood (Canada) and CONANP, and custom sponsors ECOSUR, Universidad Marista de Mérida, ALCARCINUS, Wiley-Blackwell (USA), Mayan Star Fisheries, Snorkeling Adventure, Integradora de Pescadores de QR, and Academia Mexicana de Ciencias. We continue to receive many compliments on the colorful logo and t-shirts of the 10th ICWL designed and produced by Mexican artist Jorge *iñones-Alvarado. On behalf of our colleagues and sta' we thank all atendees, whose excellent presentations and discussions, as well as their joie de vivre, turned the 10th ICWL into such a memorable scienti"c and social event. ¡Muchas gracias y hasta luego! Patricia Briones-Fourzán & Enrique Lozano-Álvarez Conveners of the 10th ICWL Universidad Nacional Autónoma de México Instituto de Ciencias del Mar y Limnología Te Lobster Newsleter Volume 28, Number 1: January 2015 &2 VOLUME TWENTY EIGHT JANUARY 2015 NUMBER ONE !Themes&for&2015 !The!Individual!Lobster! !!Population!Dynamics! !!Ecosystems!and!Food!Webs! !!The!Business!of!Lobstering Symposium$Convener:$$ The$Rodd$Charlottetown$Hotel$ The$Prince$Edward$Island$Fishermen’s$Association Charlottetown,$Prince$Edward$Island$$Canada www.peifa.org/lobsterC2015$ Symposium$Coordinators:$ Andrea$Battison,$CrustiPath,[email protected]$ Ian$MacPherson,$Prince$Edward$Island$Fishermen’s$Association$ Carl$Wilson$,$Maine$Department$of$Marine$Resources Announcing the 11th International Conference and Workshop on Lobters June 5-9, 2017 Portland, Maine USA Steering Committee Chairs: Rick Wahle & Kari Lavalli For inquiries, please contact [email protected] or [email protected] Additional information will be sent to Lobter Newsletter subcribers… stay tuned! Te Lobster Newsleter Volume 28, Number 1: January 2015 &3 VOLUME TWENTY EIGHT JANUARY 2015 NUMBER ONE th • Laboratory experiments of ocean acidification on 10 ICWL larvae and juvenile European lobster (Homarus SESSION SUMMARIES gammarus) resulted in deformities in larvae and juveniles when pH<7.9. Climate change ………………………………………………..….. 4 • Te effect of physiological investigations into the Aquaculture ………………………………………………..………. 4 impact of climate change drivers on the early Behavior ………………………………………………..…………… 5 development of Nephrops norvegicus. Disease .………………………………………………..…………..… 6 • Behavioural disturbances affecting food recognition, Fisheries Technology .……………………………………………..7 food search and CO2 avoidance were also outlined Marine Protected Areas ………………………………………… 8 for N. norvegicus. Habitat & Ecosystems .………………………………………….. 8 • Climate change was also implicated in dramatic Population & Community Ecology …………………………10 decline of American lobster (Homarus americanus) Lobsters in Antiquity ……………………………………………12 fisheries in southern New England over the past two Stock Assessment …………………………………………………14 decades that are related to excessive summer Reproduction & Development ………………………………. 15 warmth and shell disease. Larval Connectivity ……………………………………………. 17 • In Maine the effects of climate change have resulted Management .……………….……………………………………. 18 in much higher abundance of American lobster Genetics ……………………….……………………………………. 20 stocks which has resulted in changes in the spatial distribution of the stock. Tis has resulted in an evolution in the fishermen’s territorial behavior. Session 1: Climate Change • A biological monitoring program over 40 years on Chair: Nick Caputi
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  • Growth Models and Analysis of Crustacean Growth Data

    Growth Models and Analysis of Crustacean Growth Data

    Growth Models and Analysis of Crustacean Growth Data Chuan Hui Foo B.Sc Edu (Hon), M.Sc (Hon) A thesis submitted for the degree of Doctor of Philosophy at The University of Queensland in 2017 School of Mathematics and Physics Abstract Crustaceans represent one of the most important fishery species in the world, both ecologically and economically. Understanding the growth pattern of these species is fundamental to their stock assessment and sustainability management. Unlike most other fishery species, crustaceans must shed their exoskeleton periodically in order to grow, a process known as `moulting'. As a result, their growth trajectories do not follow a linear pattern. Traditional growth models, how- ever, are based on continuous growth trajectories and thus are not appropriate for modellling stepwise growth in crustaceans. This thesis develops novel methodology for modelling discrete growth pattern in crustacean species. We introduce new stochastic growth models that incorporate discontinuous jumps, taking into account individual heterogeneity and environmental variability. There are two different settings, data from an artificial condition (tank data) and data from the natural environment (tag-recapture data). We propose new approaches for modelling the growth of crustaceans from each data type, respectively. A likelihood approach is constructed to estimate the parameters of our growth models. Our methodology addresses four major challenges in modelling crustacean growth. Firstly, as previously mentioned, crustacean growth is a discrete stepwise process and hence traditional models, which assumes continuous growth over time, is not appropriate for use. Secondly, growth patterns are significantly affected by individual variability. The process of moulting involves interaction between two major stochastic processes of growth, namely the intermoult period (the time interval between two successive moults) and the moult increment (the increase in size between moults).