Presence of Conchoderma auritum and C. virgatum (Maxillopoda, Lepadidae) and Gloiopotes huttoni (Copepoda, Caligidae) on the black marlin, from the Gulf of Tehuantepec, Mexico

This is the first report of coexistence of pedunculate barnacles, Conchoderma auritum and C. virgatum in the mouth, and with the copepod Gloiopotes huttoni in the precaudal zone, on the black marlin, Istiompax indica, a as host. This is also the first note of a new non-mammalian host for C. auritum. The host specimen was caught in sport fishing in the Gulf of Tehuantepec, eastern Pacific. A review of registered occurrences of the genus Conchoderma in species of the fish family Istiophoridae is provided.

Ethnoichthyological Study of Biological Characteristics and Ecology (Salminus brasiliensis: Teleostei/Characiform): Importance, Status and Conservation Challenges in the Region of Mato Grosso, Brazil

Introduction: Salminus is a genus of ichthyofauna currently constituted by five species of migratory neotropical fish, predators, which are important in commercial, ecological and sport fishing. Aims: The article reflects the conception of fishermen about the ecological interrelationships of ichthyofauna, the relationship with sport fishing, aspects of trophic interactions among fish, the use of habitats aimed at feeding or reproduction and relations with fishing activity. Methodology: Study carried out in the state of Mato Grosso, central region of Brazil. 122 fishing professionals and artisanal fishermen were interviewed. The testimonies were obtained through phonographic interviews, carried out during visits in temperate sport fishing from 2018 to 2020, verifying questions related to fishing and the study specimen S. brasiliensis. Results: Among the interviewees, 37 were sport fishermen (30.3%), 22 artisanal fishermen (18.1%) and 63 guide fishermen (51.6%). The interviewees reported several situations and approaches on the problems generated by sport fishing in the State. The results were consistent with the scientific literature and revealed detailed knowledge about the survival strategies of S. brasiliensis. The answers revealed the fishermen's observations on the decrease in fishing resources, the scarcity of species and the conflicts related to sport fishing, making it necessary to look for the best ways of recovering and conserving native species and monitoring in the surveyed places. Conclusion: S. brasiliensis is an example of the ichthyofauna that is much sought after by sport fishing. The interviewees demonstrated important perceptions of the changes that are occurring in the rivers of Mato Grosso and it was found that it is necessary to intensify studies looking for ways to recover and conserve the native ichthyofauna in the region. The results obtained aim to promote social contributions and partnerships with professional and artisanal fishermen, encouraged to achieve a better harmony between fishing and nature, creating actions that can be extended to indigenous, quilombola and riverside peoples.

DIVERSIDADE DE PEIXES NA ZONA COSTEIRA DO ESTADO DO MARANHÃO A PARTIR DE DADOS DA PESCA ESPORTIVA

The state of Maranhão has a vast coastline that promotes the development of coastal recreational fishery, an activity that has attracted more and more fans in recent years. In this context, the objective of this work was to demonstrate the importance of sport fishing as an auxiliary source in monitoring the diversity of fish on the beaches of the metropolitan region of São Luís, Maranhão, through the monitoring of sport fishing tournaments, held in December 2018 on the beach do Olho d‟água and in July 2019, at Araçagi beach. The captured fish were stored in isothermal boxes containing ice and transported to the laboratory for taxonomic identification. 252 specimens were captured, belonging to 19 species, and distributed in 10 families. The family Sciaenidae was the most representative with 3 species. The predominant species were Conodon nobilis and Genyatremus luteus from the Haemulidae family, which together represented 39% of the specimens captured on the Olho d‟água beach and 24% on the Araçagi beach. The individuals of C. nobilis had an average weight of 29.4 ± 12.7 g and an average length of 12.3 ± 2.0 cm, with a curve of weight x length ratio represented by the equation PT = 0.034 CT2.6637 and R2 = 0, 67, with b = 2.67. While in G. luteus, the individuals had an average weight of 96.5 ± 82.2 g and an average length of 15.8 ± 4.4 cm, with a curve of the weight x length ratio represented by the equation: PT = 0.0145CT3.0999 and R2 = 0.81, with b = 3.09. The diversity of fish in beach fisheries can contribute to studies of fishery biology to support the development of management strategies and conservation of fish stocks.

Length-weight relationships for the fifty littoral and coastal marine fish species from the Eastern Adriatic Sea

The length–weight relationship parameters are reported for the fifty littoral and coastal marine fish species from the Eastern Adriatic. Captures were made between the years 2004 and 2017 during sport fishing competitions. The parameters a and b of the equation W = aLb were estimated. The b values ranged from 2.1972 for Spicara smaris (Linnaeus, 1758) to 3.7044 for Salaria pavo (Risso, 1810). The L-W relation for Scyliorhinus stellaris (Linnaeus, 1758), Gobius bucchichi Steindachner 1870, Gobius geniporus Valenciennes 1837 and Lipophrys trigloides (Valenciennes, 1836) are not available in FishBase and presents new data for these species. For some other species, such as Labrus mixtus Linnaeus 1758, there are only two relationships, but none from the Mediterranean, for Gobius paganellus Linnaeus 1758 only four relationships and none from Central and Eastern Mediterranean, while for Labrus merula Linnaeus 1758, Symphodus mediterraneus (Linnaeus, 1758), Symphodus roissali (Risso, 1810), Gobius cobitis Pallas 1814, Gobius cruentatus Gmelin 1789, Gobius niger Linnaeus 1758, Parablennius gatorugine (Linnaeus, 1758), Parablennius sanguinolentus (Pallas, 1814), Salaria pavo (Risso, 1810), and Bothus podas (Delaroche, 1809) very low number of relationships are presented and none from the Adriatic Sea.

WISATA EDUKASI IKAN SEBAGAI TEMPAT RUANG KETIGA

AbstrakKehidupan pada daerah Jakarta utara penuh dengan aktivitas dan rutinitas keseharian dengan laut, karena sebagian besar masyarakat disana bekerja sebagai nelayan dan juga menjual hasil tangkapan dari laut. Jenis aktifitas wisata yang dapat dilakukan di Jakarta, lebih tepatnya di Jakarta utara yaitu wisata perairan antara lain yaitu renang, pemancingan, dayung perahu, olahraga air, dan perikanan wisata. Perikanan wisata adalah suatu pemanfaatan usaha perikanan sebagai obyek kunjungan wisata. Kegiatan perikanan wisata dapat berupa penangkapan ikan sebagai hobi (game fishing), pemancingan ikan sebagai hobi (sport fishing), berkunjung ke lokasi budidaya ikan hias yang dilengkapi dengan objek wisata berupa “display” ikan hias (ornamental fish). Tujuan proyek ini untuk mengedukasi masyarakat mengenai ikan dan meningkatkan kualitas sosial masyarakat. Program utama yang ditawarkan pada proyek ini terdapat area display aquarium sebagai edukasi ikan, dan juga penangkaran ikan untuk memberi perkembangbiakkan mengenai ikan, terdapat ruang santap terbuka untuk ruang makan yang disertai suasana ikan, serta dapat juga memancing ikan, dan area penunjang yaitu ruang auditorium sebagai edukasi dan juga tempat sosial bagi masyarakat untuk mengadakan acara maupun aktivitas sosial.Kata Kunci : arsitektur ; edukasi ; ikan ; sosial ; wisataAbstract Life in the North Jakarta area is full of activities and daily routines with the sea, because most of the people there work as fishermen and also sell their catch from the sea. Types of tourism activities that can be carried out in Jakarta, more precisely in North Jakarta, are water tourism, including swimming, fishing, rowing boats, water sports, and fishing tourism. Tourism fisheries are utilization of fishery business as an object of tourist visit. Tourism fishing activities can be in the form of fishing as a hobby (game fishing), fishing as a hobby (sport fishing), visit to an ornamental fish culture location that is equipped with an attraction in the form of "display" (ornamental fish). The aim of this project is to educate the public about fish and improve the social quality of the community. The main program offered in this project is the aquarium display area for fish education, and also fish breeding to provide reproduction about fish, there is an open dining room accompanied by the atmosphere of the fish, and can also fish fishing, and other supporting areas, is the auditorium as education and also a social place for the community to hold events and social activities. Keywords : architecture ; education ; fish ; social ; tourism

Length-based indicators for the management of sport fishery in Yucatan, Mexico

Sportfishing is an activity of increasing popularity that involves a large number of users and high levels of fishing effort. In Yucatan, most of the target species in sport fishing are the same as those of commercial fisheries. However, there is no record of fishing effort or catch volumes. Thus the impact of sport fishing on these populations is unknown. This study analyzes the catches made by users of sport fisheries of nine species (Epinephelus morio, Haemulon plumieri, Seriola dumerili, Lutjanus synagris, Ocyurus chrysurus, Calamus bajonado, Sphyraena barracuda, S. guachancho and Mycteroperca bonaci) through length-based indicators. Samples of species’ sizes were obtained from the catches made during 10 fishing tournaments held in Yucatan's three-port towns (Sisal, Yucalpeten, and Telchac) between 2015 and 2016. The catch variables that were evaluated included: the number of mature individuals Pmat, optimal length Popt, and the number of mega-spawners Pmega. Length measures were derived from 1,252 individuals. Only H. plumieri, L. synagris, and S. guachancho exhibited sustainable indicator values, while E. morio and C. bajonado demonstrated extremely low values. In most species, sport fishing affects a high proportion of juveniles. The results suggest that sportfishing contributes to the fishing pressure of a species and commercial fishing, due to the capture of juveniles of economically important fish. It is essential to establish a systematic monitoring method of such activities and increase the priority level of the evaluation and management of this fishery.

Ecophysiological interactions in species of peacock bass Cichla spp. from the Amazon

The peacock bass species Cichla spp. are economically important in the Amazon region, being used in food, sport fishing and the ornamental fish market. The aims of present study was investigate the ecophysiological interactions and the relationship to the physical parameters of the water. In order to compare and ecologically correlate the species of peacock bass (Cichla monoculus, Cichla temensis and Cichla vazzoleri) in Lake Balbina, Presidente Figueiredo. The total of 45 animals, 15 individuals of each species, was captured with rod and reel, hand line with natural and artificial bait. The animals blood was removed by means of caudal puncture and the hematological data were determined according to methodology previously described in the literature. The analysis of water physical properties was determined during the collections. The Principal Component Analysis (PCA) was used for observations of interactions (60.00%). The PCA of the erythrogram showed an interaction of 86.26%, the thrombogram and leukogram of the peacock bass species showed no interaction. The PCA of the plasma metabolites showed no interaction with a rate of 51.55%, however, there is a tendency in the x axis, where the species C. monoculos presents distinct ecophysiological patterns of C. temensis and C. vazzoleri. In the analysis of the physical properties of the water, was observed interaction 96.59%, where in the X axis the species C. monoculos and C. vazzoleri inhabit exclusive localities. It is possible to infer that C. monoculos presents a different pattern compared to other species.