A controlled laboratory experiment was undertaken to simulate varying swash zone characteristics and sensor-target geometry found in digital images collected by ARGUS coastal imaging systems. Using a hyperspectral sensor, reflectance data were integrated over the respective red, blue and green wavelengths corresponding to a standard ARGUS video imaging sensor. The dominant swash zone parameters affecting shoreline detection were found to be the presence or absence of surface foam, site-specific sediment characteristics (especially colour), and water depth. Winter versus summer solar elevation and the sensor zenith were also found to affect the cross-shore location of the detected waterline. With this new information, site- and time-specific corrections can be applied to coastal digital imagery, to improve the confidence of shoreline detection.

No description available.

A controlled laboratory experiment was undertaken to simulate varying swash zone characteristics and sensor-target geometry found in digital images collected by ARGUS coastal imaging systems. Using a hyperspectral sensor, reflectance data were integrated over the respective red, blue and green wavelengths corresponding to a standard ARGUS video imaging sensor. The dominant swash zone parameters affecting shoreline detection were found to be the presence or absence of surface foam, site-specific sediment characteristics (especially colour), and water depth. Winter versus summer solar elevation and the sensor zenith were also found to affect the cross-shore location of the detected waterline. With this new information, site- and time-specific corrections can be applied to coastal digital imagery, to improve the confidence of shoreline detection.

Rapporten tar upp en kartläggning av nätverksövervakningssystem (NMS) som används för att övervaka nätverkstjänster och noder på ett nätverk. De egenskaper för NMS som utvärderas är vilket stöd systemen har för att övervaka ett flertal tjänster, hur god prestandan är för varje system samt hur god användbarheten i gränssnittet är. Resultatet visar att Nagios, OpenNMS samt Argus hade stöd för samtliga tjänster medan Munin inte hade stöd för nätverksenheter och Cacti endast stöd att övervaka SNMP. Det visar även att Nagios och OpenNMS generellt hade möjlighet att larma vid fler händelser samt att dessa två system var markant snabbare än Cacti och Munin. Användbarheten visade relativt stor skillnad i olika system. OpenNMS hade högst totalpoäng, men Nagios presterade något bättre i vad Sundström (2005) kallar för interaktion. Munin och Argus fick samma resultat med låg funktionalitet och högre struktur medan Cacti hade god funktionalitet och interaktion men väldigt låg struktur.

<p>Rapporten tar upp en kartläggning av nätverksövervakningssystem (NMS) som används för att övervaka nätverkstjänster och noder på ett nätverk. De egenskaper för NMS som utvärderas är vilket stöd systemen har för att övervaka ett flertal tjänster, hur god prestandan är för varje system samt hur god användbarheten i gränssnittet är. Resultatet visar att Nagios, OpenNMS samt Argus hade stöd för samtliga tjänster medan Munin inte hade stöd för nätverksenheter och Cacti endast stöd att övervaka SNMP. Det visar även att Nagios och OpenNMS generellt hade möjlighet att larma vid fler händelser samt att dessa två system var markant snabbare än Cacti och Munin. Användbarheten visade relativt stor skillnad i olika system. OpenNMS hade högst totalpoäng, men Nagios presterade något bättre i vad Sundström (2005) kallar för interaktion. Munin och Argus fick samma resultat med låg funktionalitet och högre struktur medan Cacti hade god funktionalitet och interaktion men väldigt låg struktur.</p>

SANTIAGO, André Prata. Lagosta: aquicultura como ferramenta para sustentabilidade e preservação do recurso. 2016. 307 f. Tese (Doutorado em Desenvolvimento e Meio Ambiente)-Universidade Federal do Ceará, Fortaleza, 2016. / Submitted by Jairo Viana (jairo@ufc.br) on 2016-12-28T19:04:08Z No. of bitstreams: 1 2016_tese_apsantiago.pdf: 21938262 bytes, checksum: 98feb3885f00c3c52641d1b0e284afcc (MD5) / Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2016-12-28T19:05:38Z (GMT) No. of bitstreams: 1 2016_tese_apsantiago.pdf: 21938262 bytes, checksum: 98feb3885f00c3c52641d1b0e284afcc (MD5) / Made available in DSpace on 2016-12-28T19:05:38Z (GMT). No. of bitstreams: 1 2016_tese_apsantiago.pdf: 21938262 bytes, checksum: 98feb3885f00c3c52641d1b0e284afcc (MD5) Previous issue date: 2016 / The causes of drop and fluctuations in the production of spiny lobster producing countries are mainly the over-exploitation of stocks due to the fact that the management of these is being done unsustainably. Brazil is going through management problems in the lobster fishery, which results in difficulties, especially in artisanal fisheries. The aim of this work is to propose aquaculture as a tool for sustainability and preservation of lobster in Brazil. Lobster cultivation research of the Panulirus argus species was conducted in BioAqua (Parnaíba/ UFPI). Initially, a study was developed to determine the layout of a laboratory for research in biotechnology and marine aquaculture. Afterwards, an experiment with transport of lobster juveniles was performed using four replications for each treatment (T-I: control, T-II: ascorbic acid+macroalgae; T-III: macroalgae, and T-IV: ascorbic acid) and two different densities (20 and 25 ind./ container), in a completely randomized block design. Tests with water management were performed with three different treatments (TA: without exchange water; TB: 100% weekly exchange water, and TC: without exchange of water with added probiotic) and tests with different food with four treatments (T-1: Artemia; T-2: shrimp; T-3: mussel, and T-4: Artemia+shrimp+mussels). In the growth experiment in recirculation system, physical and chemical variables of the water were controlled, being analyzed the growth performance of lobsters, cultivated with initial density of 20 ind. m-3. Cultivation was also carried out using different types of shelters (Treatment I: bricks, and treatment II: PVC fittings), also in recirculation system. The layout was determined and implemented with two recirculating systems, each with six cultivation tanks and filtration system, a system for cultivation in a bioassay which can be cultivated simultaneously 288 juveniles, a room for biosafe culture and a system for receiving animals and water storage. The transportation of juvenile P. Argus proved viable, requiring the use of equipment for aeration and a plastic container with a capacity of 15 L with 50% of the volume being seawater, for transporting between 200 and 300 g of lobster, in treatments with density of 20 ind./ container there was no mortality. However, the treatments with 25 ind./ container, the average mortality was 0.5 ind./ treatment, but there was no statistical difference between them. Regarding the comparison of treatments with different managements of water, the highest survival and biomass growth rate were obtained in T-B treatment with 97.92 and 21.77%, respectively. Yet the highest growth rate was obtained in T-A treatment. In the experiment with food testing, T-3 treatment animals showed the highest survival rate of 95.83%, with greater rate of increase of biomass and growth achieved by treatment with T-4 23.84 and 4.66%, respectively. There were no statistical differences among the treatments with different management of water and food. In the growth experiment survival was 65.83%, the increase in biomass was 302.44% with an increase in the total length of 58,04% in 126 days of cultivation. In cultivation using different shelters, treatment I, had a survival rate of 81.67%, biomass gain of 316% or 30.87 g, and an increase in the total length of 34.48 mm or 54.98% throughout the cultivation. In treatment II, the survival rate was 70.00%, the biomass gain was 329.82% and 33.18 g, and the increase in the total length was 37.95 mm or 60.61% throughout the cultivation, with no statistical difference between treatments for all variables. Despite the difficulties due to their biology, what makes difficult the cultivation of all phases of the life cycle in captivity, the advancement of aquaculture is promising in some countries that produce lobster through fishery, since they are able to benefit from their own fishing, through restocking, as well as through their own aquaculture production, to meet part of the market demand. / As causas das quedas e oscilações na produção de lagostas espinhosas dos países produtores são, principalmente, a superexploração dos estoques devido ao manejo destes ser feito de forma não sustentável. O Brasil está passando por problemas de gestão na pesca da lagosta, o que resulta em dificuldades, principalmente na pesca artesanal. O objetivo deste trabalho é propor a aquicultura como ferramenta para sustentabilidade e preservação da lagosta no Brasil. As pesquisas de cultivo de lagostas da espécie Panulirus argus foram realizadas no BioAqua (Parnaíba/ UFPI). Inicialmente, foi desenvolvido um estudo para determinação do layout de um laboratório para pesquisas na área de biotecnologia e aquicultura marinha. Posteriormente, foi realizado um experimento de transporte de juvenis de lagosta com quatro repetições para cada tratamento (T-I: controle; T-II: ácido ascórbico+macroalgas; T-III: macroalgas; e T-IV: ácido ascórbico), com duas diferentes densidades (20 e 25 ind./ recipiente), em blocos inteiramente casualizados. Foram realizados testes com manejo de água com três diferentes tratamentos (T-A: sem troca d’água; T-B: com 100% de troca d’água semanal; e T-C: sem troca d’água, com adição de probiótico) e testes com diferentes alimentos com quatro tratamentos (T-1: Artemia; T-2: camarão; T-3: mexilhão; e T-4: Artemia+camarão+mexilhão). No experimento de engorda em sistema de recirculação foram controladas as variáveis físicas e químicas da água, sendo analisado o desempenho zootécnico das lagostas, cultivadas com densidade inicial de 20 ind. m-3. Também foi realizado o cultivo utilizando diferentes tipos de abrigos (trat. I: tijolos; e trat. II: conexões de PVC) também em sistema de recirculação. O layout foi determinado e executado com dois sistemas de recirculação, cada um com seis tanques de cultivo e sistema de filtragem, um sistema para cultivo em bioensaio onde é possível cultivar, simultaneamente, 288 juvenis, uma sala para cultivo biosseguro e um sistema para recepção de animais e armazenamento de água. O transporte de juvenis de P. argus mostrou-se viável, sendo necessário uso de equipamento para aeração e um recipiente plástico com capacidade de 15 L, com 50% do volume com água marinha, para transportar entre 200 e 300 g de lagosta, nos tratamentos com densidade de 20 ind./ recipiente não houve mortalidade, já nos tratamentos com 25 ind./ recipiente, a mortalidade média foi de 0,5 ind./ tratam., mas não houve diferença estatística entre eles. Na comparação dos tratamentos com diferentes manejos de água a maior sobrevivência e taxa de aumento de biomassa foram obtidas no tratamento T-B com 97,92 e 21,77%, respectivamente, já a maior taxa de crescimento foi obtida no tratamento T-A. No experimento com testes de alimento os animais do tratamento T-3 apresentaram a maior sobrevivência com 95,83%, com maior taxa de aumento de biomassa e crescimento obtida pelo tratamento T-4 com 23,84 e 4,66%, respectivamente. Não houve diferença estatística na comparação dos tratamentos com diferentes manejos de água e alimentação. No experimento de engorda a sobrevivência foi de 65,83%, o aumento de biomassa foi de 302,44%, com aumento do comprimento total de 58,04%, em 126 dias de cultivo. No cultivo utilizando diferentes abrigos, o trat. I, teve sobrevivência de 81,67%, ganho de biomassa de 316% ou 30,87 g e aumento do comprimento total de 34,48 mm ou 54,98%, ao longo do cultivo. Já no trat. II, a sobrevivência foi de 70,00%, ganho de biomassa de 329,82% ou 33,18 g e o aumento do comprimento total foi de 37,95 mm ou 60,61%, não havendo diferença estatística entre os tratamentos em todas as variáveis. Apesar das dificuldades devido a sua biologia, o que dificulta o cultivo de todas as fases do ciclo de vida em cativeiro, é promissor o avanço da aquicultura em alguns países que produzem lagosta através da pesca, por poder beneficiar a própria pesca através de trabalhos de repovoamento, como também através da própria produção aquícola, para atender parte da demanda do mercado.

NASCIMENTO, Carine Belarmino do. Variações de temperatura e salinidade do meio e seus efeitos no processo de osmorregulação da lagosta Panulirus argus (Latreille, 1804). 2015. 82 f. Dissertação (Mestrado em Engenharia Agrícola)-Universidade Federal do Ceará, Fortaleza, 2015. / Submitted by Anderson Silva Pereira (anderson.pereiraaa@gmail.com) on 2017-01-19T19:05:54Z No. of bitstreams: 1 2015_dis_cbnascimento.pdf: 1815598 bytes, checksum: ed67ab3c622d0f089ca438dcff73d0b5 (MD5) / Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2017-01-23T20:22:49Z (GMT) No. of bitstreams: 1 2015_dis_cbnascimento.pdf: 1815598 bytes, checksum: ed67ab3c622d0f089ca438dcff73d0b5 (MD5) / Made available in DSpace on 2017-01-23T20:22:49Z (GMT). No. of bitstreams: 1 2015_dis_cbnascimento.pdf: 1815598 bytes, checksum: ed67ab3c622d0f089ca438dcff73d0b5 (MD5) Previous issue date: 2015 / The lobster Panulirus Argus, for decades, is the most important fishing resource in the Northeast. However, due to the sharp fishing effort, the stocks are currently over-exploited.One solution would be the development of technological packages which make easy the growth of this species in captivity. The place where the lobsters live appears to be the definition of comfort based on the environmental context, when we analyze the environmental characteristics due to the comfort zone of cultivated species. The objective of this work was to evaluate the mixed effect of differents temperature and salinity in controlled laboratory environments by determining and interpreting the osmolality of the hemolymph of Panulirus argus lobster. The study was developed at the Center for Studies in Aquaculture Coast Sea Institute of Sciences of the Federal University in Ceará between April 2014 to January 2015. Lobsters were evaluated (both sexes) when they were abruptly submited to varying conditions of temperature and salinity for a continuous period about three hours. The experiment was achieved in two steps, based on each of the set temperatures, respectively 22°C and 28°C.Combined effects of temperature with different salinities (15‰, 20‰, 25‰, 30‰, 35‰,40‰) were checked with a total of four repetitions for each tested salinity. The temperature were monitored, dissolved oxygen, pH, salinity and animal behavior as mobility and acceptance of food. It was observed there were significant differences (p <0.05) in Osmoregulatory behavior of Argus Panulirus lobsters that live in environments in terms of different salinities and the animals submited seawater around osmolality 1127 mOsm (40 %) to 22 ° C and 1081 mOsm (40 %) to 28 ° C were possibly in comfort situation. Despite the significant absence (p> 0.05) of the variation of osmolality of the hemolymph following the two temperatures tested in selected animals to the same salinity, it is clear that individuals kept at a temperature of 22 ° C results showed 100% survival when exposed to salinity of 20 ‰ considered lethal for lobsters. When these animals are submited bruptly to salinity of 15 % in these two temperatures tested showed 100 % mortality in the first three hours of exposure.The physical and chemical parameters , oxygen and pH of the water remained normal standards regarding lobster Panulirus Argus maintained in the laboratory. / A lagosta Panulirus argus, há décadas, é o recurso pesqueiro mais importante da região Nordeste. No entanto, devido ao acentuado esforço de pesca, os estoques atualmente se encontram sobre-explorados. Uma solução seria o desenvolvimento de pacotes tecnológicos que viabilizassem o crescimento dessa espécie em cativeiro. A ambiência surge como sendo a definição de conforto baseada no contexto ambiental, quando se analisa as características de meio ambiente em função da zona de conforto das espécies cultivadas. Objetivou-se nesse trabalho avaliar o efeito combinado de diferentes temperaturas e salinidades em ambientes controlados de laboratório através da determinação e interpretação da osmolalidade da hemolinfa da lagosta Panulirus argus. O estudo foi realizado no Centro de Estudos emAquicultura Costeira do Instituto de Ciências do Mar da Universidade Federal do Ceará entre os períodos de abril de 2014 a janeiro de 2015. Foram avaliadas lagostas de ambos os sexos quando as mesmas foram submetidas abruptamente a condições variadas de temperatura e salinidade por um período contínuo de três horas. O experimento foi realizado em duas etapas, tendo como base cada uma das temperaturas estabelecidas, respectivamente 22°C e 28°C. Efeitos combinados das temperaturas com diferentes salinidades (15‰, 20‰, 25‰, 30‰, 35‰, 40‰) foram testados, com um total de quatro repetições para cada salinidade testada. Foram monitorados oxigênio dissolvido, temperatura, pH, e salinidade. Observou-se que existiram diferenças significativas (p<0,05), no comportamento osmorregulatório das lagostas Panulirus argus que habitam ambientes distintos em termos de salinidades e que os animais submetidos à osmolalidade de água do mar em torno de 1127 mOsm (40‰) para a temperatura de 22°C e 1081 mOsm (40‰) para a temperatura de 28°C estavam possivelmente em situação de maior conforto. Apesar da ausência significativa (p>0,05) da variação da osmolalidade da hemolinfa em função das duas temperaturas testadas em animais selecionados a uma mesma salinidade, percebe-se que indivíduos mantidos na temperatura de 22°C apresentaram resultados de 100% de sobrevivência quando expostos a salinidades de 20‰ consideradas letais para as lagostas. Animais submetidos abruptamente à salinidade de 15‰ nas duas temperaturas testadas apresentaram 100% de mortalidade nas três primeiras horas de exposição. Os parâmetros físico-químicos, oxigênio e pH da água mantiveram-se dentro dos padrões da normalidade em relação à lagosta P. argus mantida em laboratório.

<p>Den tekniska tjänsten är idag av stor betydelse för att Försvarsmakten skall fungera. Uppgifter inomden tekniska tjänsten är bland annat att hantera driftstörningar som inträffar på materiel och hantera uppföljningar av dessa inträffade fel. Syftet med den här uppsatsen är att undersöka två olika uppföljningssystem för driftstörningar, ett system från armén och ett system från flygvapnet. Utifråndetta diskuteras systemen ur olika synvinklar med fokus på bland annat fördelar och nackdelar. Under bakgrundsbeskrivningen av de olika systemen visade det sig att ARGUS och DA-flyg följer upp i två olika riktningar vid driftstörningar. ARGUS fokuserar på den materiella feluppföljning och DA-Flyg fokuserar på att göra en uppföljning på individnivå. Vidare under bakgrunden framgick det även att generellt sett så använder man samma typ av rapporteringsprocedur, en fyrastegsprocess. Bakgrunden följdes upp av en analys av två olika typfall med utgångspunkt i de båda uppföljningssystemen och därefter diskuterades resultatet. Utifrån diskussionen drogs det slutsatser kring de olika systemen. Några av dessa var bland annat att inledningsvis var ARGUS ett krångligt system att använda då man var tvungen att rapportera i två olika system. Sedermera korrigerades detta och i dagsläget är det en förenklad version av ARGUS som används i ett system. DA-Flygbygger på att man är lojal mot systemet då rapporten som skrivs är helt anonym, sånär som på en otydlig signatur i de flesta fall. Författarens avslutande ord är att en sammanslagning alternativt ett nytt system där både materiel och individuppföljning ingår eventuellt skulle effektivisera hela processen med feluppföljning.</p> / <p><p>The Technical Service is one of the cornerstones that make the Swedish armed force operational. Handle and manage failure within technical materials are, among other tasks, something that technical service needs to deal with. The aim with this paper is to examine two different systems that handle the follow-up of different failures, one system from the army and one system from the airforce. Based on the aim, the systems will be compared and discussed through different points of view, focusing on the advantage and disadvantage. Looking at the background description of the systems, it shows that ARGUS and DA go two different tracks when they do a follow up. ARGUS focus on the follow up of the material, while DA focuses on the follow up in an individual aspect. Further in the background, it shows that, the same procedure isused in the report process, a four-step-model. The background is followed up by an analysis of two different cases where the follow up systems is the main point and after that, a discussion around the result was made. During the discussion, the writer of this paper made up some conclusions, and those are as follows. In the beginning, the ARGUS system was complicated to use. The fact that you needed to type in the report twice in two different kinds of systems made it complicated to use. However, this problem, were fixed due the integration of the system within another system. In the DA system, everyone that uses this system needs to be loyal against the system, due the lack of connection between report and report writer. As a summary of the whole paper, the writer recommends a system that has both of these parts, in other words, both individual follow up and materials follow up, might make the system more effective.</p></p>

Den tekniska tjänsten är idag av stor betydelse för att Försvarsmakten skall fungera. Uppgifter inomden tekniska tjänsten är bland annat att hantera driftstörningar som inträffar på materiel och hantera uppföljningar av dessa inträffade fel. Syftet med den här uppsatsen är att undersöka två olika uppföljningssystem för driftstörningar, ett system från armén och ett system från flygvapnet. Utifråndetta diskuteras systemen ur olika synvinklar med fokus på bland annat fördelar och nackdelar. Under bakgrundsbeskrivningen av de olika systemen visade det sig att ARGUS och DA-flyg följer upp i två olika riktningar vid driftstörningar. ARGUS fokuserar på den materiella feluppföljning och DA-Flyg fokuserar på att göra en uppföljning på individnivå. Vidare under bakgrunden framgick det även att generellt sett så använder man samma typ av rapporteringsprocedur, en fyrastegsprocess. Bakgrunden följdes upp av en analys av två olika typfall med utgångspunkt i de båda uppföljningssystemen och därefter diskuterades resultatet. Utifrån diskussionen drogs det slutsatser kring de olika systemen. Några av dessa var bland annat att inledningsvis var ARGUS ett krångligt system att använda då man var tvungen att rapportera i två olika system. Sedermera korrigerades detta och i dagsläget är det en förenklad version av ARGUS som används i ett system. DA-Flygbygger på att man är lojal mot systemet då rapporten som skrivs är helt anonym, sånär som på en otydlig signatur i de flesta fall. Författarens avslutande ord är att en sammanslagning alternativt ett nytt system där både materiel och individuppföljning ingår eventuellt skulle effektivisera hela processen med feluppföljning. / The Technical Service is one of the cornerstones that make the Swedish armed force operational. Handle and manage failure within technical materials are, among other tasks, something that technical service needs to deal with. The aim with this paper is to examine two different systems that handle the follow-up of different failures, one system from the army and one system from the airforce. Based on the aim, the systems will be compared and discussed through different points of view, focusing on the advantage and disadvantage. Looking at the background description of the systems, it shows that ARGUS and DA go two different tracks when they do a follow up. ARGUS focus on the follow up of the material, while DA focuses on the follow up in an individual aspect. Further in the background, it shows that, the same procedure isused in the report process, a four-step-model. The background is followed up by an analysis of two different cases where the follow up systems is the main point and after that, a discussion around the result was made. During the discussion, the writer of this paper made up some conclusions, and those are as follows. In the beginning, the ARGUS system was complicated to use. The fact that you needed to type in the report twice in two different kinds of systems made it complicated to use. However, this problem, were fixed due the integration of the system within another system. In the DA system, everyone that uses this system needs to be loyal against the system, due the lack of connection between report and report writer. As a summary of the whole paper, the writer recommends a system that has both of these parts, in other words, both individual follow up and materials follow up, might make the system more effective.

A pesca da lagosta espinhosa Panulirus argus, encontrada no litoral do estado do CearÃ, tem apresentado declÃnio nos Ãltimos anos. Estudos sobre os aspectos reprodutivos de lagostas sÃo ainda escassos, principalmente para os machos, necessitando de esclarecimentos na Ãrea de biologia reprodutiva. O presente trabalho propÃe-se a descrever morfologicamente o sistema reprodutor masculino de P. argus caracterizando histologica e histoquimicamente os componentes somÃticos e germinativos, buscando oferecer subsÃdios à regulamentaÃÃo da pesca fundamentando-se na relaÃÃo entre os dados biomÃtricos e maturaÃÃo sexual fisiolÃgica dos animais coletados. Os animais foram adquiridos junto aos pescadores dos municÃpios de Cascavel, Beberibe, Caucaia e Trairà do litoral cearense. Os indivÃduos foram medidos morfometricamente e o trato reprodutor retirado e submetidos aos procedimentos histolÃgicos de rotina (fixaÃÃo, desidrataÃÃo, diafanizaÃÃo, impregnaÃÃo e emblocamento em parafina, microtomia e coloraÃÃo). Foram utilizados 59 exemplares machos, com a mÃdia de comprimento total de 127,49 mm. A organizaÃÃo do sistema reprodutor segue o modelo bÃsico descrito para os Decapoda, sendo formado por estruturas pares, testÃculos, vasos deferentes e glÃndulas androgÃnicas. As gÃnadas apresentaram-se brancas ou transparentes e os dois lobos testiculares nÃo apresentaram conexÃo ou comissura interligando um ao outro, diferenciando-se de alguns decÃpodes. A partir do exemplar de 155 mm de comprimento total, observou-se espermatÃforo no vaso deferente, considerado neste trabalho como fisiologicamente maduro. Os testÃculos de P. argus sÃo revestidos por uma delgada camada de material fibroso e mais internamente encontra-se um extenso tÃbulo seminÃfero altamente enovelado, e entre os espaÃos externos ao tÃbulo encontram-se vasos e seios hemais. Nas secÃÃes dos tÃbulos seminÃferos foi possÃvel diferenciar cinco diferentes estÃgios das cÃlulas germinativas: espermatogÃnia, espermatÃcitos I e II, espermÃtide e espermatozÃides, considerando o tamanho e principalmente a distribuiÃÃo da cromatina no nÃcleo. A glÃndula androgÃnica nÃo foi visualizada macroscopicamente e encontrava-se pouco desenvolvida nos animais analisados. Os exemplares a partir de 155mm de comprimento total apresentavam-se fisiologicamente maduros, apresentando espermatÃforo no vaso deferente. / The fishery of the spiny lobster Panulirus argus, found in the coast of the state of CearÃ, has been declining in the last years. Studies about the reproductive aspects of lobsters are still scarce, mainly for the males, needing investigations in the area of reproductive biology. The present study describes the morphology of the male reproductive system of P. argus characterizing histologically and histochemically the somatic and germinative components, aiming to subsidy the regulation of the fishery based in the relationship between the biometric data and physiological maturation of the collected animals. The animals were acquired from fishermen of the Cascavel, Beberibe, Caucaia and Trairà municipalities, in the Cearà coast. The individuals were measured morfometrically and the reproductive organs were submitted to the routine histological procedures (fixation, dehydration, impregnation and embedded in paraffin, sectioned and coloration). It was used 59 males, with the average of total length of 127,49mm. The organization of the reproductive system follows the basic model described for Decapoda, being formed by equal structures, testis, vas deferens and androgenic gland. The gonads were white or transparent and the two testisâs lobes are not connected to each other, differing in this aspect, to some decapods. Animals larger than 155 mm of total length, presented spermatophores in the vas deferens, and were considered in this study, as mature physiologically. The testis of P. argus were covered by a thin layer of fibrous material and presented more internally, an extensive coiled seminiferous tubules, and between the external spaces to the tubules are vessel and hemal sinuses. In the sections of the seminiferous tubules it was possible to differentiate five different stages of the germinative cells: spermatogonia, spermatocytes I and II, spermatids and spermatozoa, considering the size and mainly the distribution of the chromatin in the nucleus. The androgenic gland was not visualized macroscopically and was poorly developed in the analyzed animals. The animals larger than 155mm of total length were physiologically mature, presenting spermatophore in the vas deferens.