Apesar da abundância de Paralonchurus brasiliensis (Steindachner, 1875) na ictiofauna acompanhante do camarão sete-barbas, apresenta baixo valor comercial sendo freqüentemente descartada. Esse trabalho tem como objetivo apresentar informações básicas sobre a biologia e pesca de P. brasiliensis na Armação do Itapocoroy, Penha, Santa Catarina. As coletas foram realizadas mensalmente durante o período de agosto 1996 a julho 2003, em três áreas tradicionais de atuação da pesca artesanal. A espécie apresentou crescimento alométrico positivo, com uma razão sexual de 1:2,1 entre machos e fêmeas, e tamanho de primeira maturação em 14,8 cm e 15,0 cm. P. brasiliensis apresentou amplo espectro trófico composto por 27 itens, sendo que, a partir da primavera ocorreu um incremento gradual na ingestão de alimento até o verão, seguido de queda abrupta no outono e de pequena recuperação no inverno. Apesar das flutuações sazonais ao longo dos sete anos, essa espécie ocupou a segunda posição em número e biomassa entre as integrantes da ictiofauna acompanhante.

Due to abundance of P. brasiliensis (Steindachner, 1875) in ictiofauna of the sea-bob-shrimp's bycatch, it presents low commercial value and frequently being discarded. This work aims to present basic information on biology and fisheries of P. brasiliensis in the Armação do Itapocoroy, Penha, Santa Catarina. The collections were carried out monthly during the period of August 1996 to July 2003, in three traditional areas of performance of artisan fisheries. The species presented positive alometric growth, with a sexual ratio of 1:2,1 between males and females, and the size of first maturation in 14,8 cm and 15,0 cm. P. brasiliensis presented a great trophy specter composed by 27 items, being that, from the spring a gradual increment in the food ingestion occurred until the summer, followed of abrupt fall in the autumn and small recovery in the winter. Despite of the seasonal fluctuations during the seven years, this species occupied the second position in number and biomass among the integrant of ictiofauna bycatch.

The feeding of E. crossotus was analyzed during the period from January to December 1995 using the frequency of occurrence, frequency of points and feeding index methods. The species presents a broad trophic specter and diversified, composed by 32 itens. The trophic analyses indicated the species show that the categories Crustacea, Polychaeta and Osteichthyes were the most exploited resources.

The feeding of P. spinunanus Latreille, 1819 was analyzed from January to December 1995 using the frequency of occurrence, frequency of points and feeding index methods. The species presents a broad trophic specter and diversified, composed by 24 items. The trophic analyses indicated the species show that the categories Crustacea, Osteichthyes, Echinodennata and Mollusca were the rnostexploited resources.

Portunus spinimanus Latreille, 1819 is one abundant Portunidae speeies whieh are eaught by sea-bob-shrimps artisanal fishery in Armaçãodo Itapoeoroy,Penha, Santa Catarina, Brazil. Aiming to analyze its population strueture, a total of 995 males and 1925 fernaleswere eollected by means of overtrawl frorn January to Decernber 1995, between the depthsof 610 10meters,in lhe periodsof morning,afternoonand evening. The width variation of lhe carapaee ranged írom 3.0 to 14.0 em in the males and 3.0 to 11.0emin females. The species presents growth isometric and the males reach width and weight assintoticand bigger that lhe females.The estirnatedfirst maturation width was between 6.8 and 7.6 em, reached with lhe approxirnated age of 15 months. The artisanal fishery in Armação do lrapocoroy is acting with a higher intensity over the juveniles stock.

Alimentação natural de Callinectes ornatus Ordway, 1863 (Decapoda, Portunidae) na Armação do Itapocoroy, Penha, SC - Brasil. No período de janeiro a dezembro de 1995, foram coletados 332 indivíduos de Callinectes ornatus, procedentes da Armação do Itapocoroy (Penha, SC). Foi estudada a alimentação natural da espécie e as variações sazonais da dieta. Os resultados mostram um espectro trófico diversificado, com estratégia alimentar generalista, sendo Algas, Macrófitas, Foraminiferida, Mollusca, Polychaeta, Crustacea, Echinodermata, Osteichthyes e matéria orgânica não identificada, os grupos que compõem sua dieta.

From January to December 1995, 332 individuals of the Callinectes ornatus species were collected from the Itapocoroy inlet in Penha, Sta. Catarina, Brazil to study its natural diet and the seasonal variations of diet. Results showed a diversified trophic spectrum with a generalized dietary strategy comprising the algae, macrophyta, foraminiferida, mollusca, polychaeta, crustacea, echinodermata, Osteichthyes and NIOM (Nonidentified Organic Matter) groups.

Xiphopenaeus kroyeri is the most exploited shrimp specie along Center-South coast of Santa Catarina State, Brazil, by artisanal fishery. In the period from March/1996 to February/1997, 3965 shrimps were collected (1843 males and 2122 females) sampled by over-trawl, with the depth oscillating between 5 and 15 meters. Xiphopenaeus kroyeri shows seasonal fluctuations in its abundance with higher rates in autumn. The population's average total-length varied between 7.5cm and 9.1cm, and the presence of juveniles was common along the year. The males and females get to the first gonadal maturation with 7.4 cm and 9.0 cm length, respectively; these lengths were reached within 6 and 8 months of age.

In the period of January and December, 1995, there were collected by means of overtrawl, 12977 samples of macroinvertebrates and demersal fishes, in the Armação do Itapocoroy, Penha (SC), between the depths of 6 to 10 meters, in the periods of morning, afternoon, and evening. There were registered the incidence of 57 families, 80 kinds and 92 species distributed between the macroinvertebrates and demersal fishes. The families of greater incidence were: Portunidae (30.7%), Strombidae (11.4%), Sciaenidae (11.1%) and Bothidae (10.3%) which all together, contributed with 63.5% of the total samples. The grouping analysis presented greater diversity in the Winter (2.77) and smaller one in the Springtime (1,34); the amplitude of variation H' reflects the great number of species of both occasional and seasonal in the Armação do Itapocoroy.

The C. danae females were collected monthly, within the period of April/91 to March/92. The monthly average variation of the condition factor (Ø1), is associated, among other causes, to both the weight of the gonads (Ø3) and the stomach (Ø2). The difference between Ø1 and Ø3 (ΔØ) estimates the "gonadal condition" showing highest values on the reproductive cycle (May, November, January and March). These months coincide with the highest values of the gonadossomatic index. So can be used as an indicative of the period of spawning of Callinectes danae in Lagoa da Conceição, Santa Catarina, Brazil.