Research on Bluegills, Lepomis macrochirus R., is abundant but typically focuses water bodies with similar environmental conditions. We assessed Bluegill density, relative abundance (catch per unit effort [CPUE] by electrofishing), growth, and size structure in 60 lakes wide-ranging surface areas (2–12,412 ha), trophic states (oligotrophic–hypereutrophic), macrophyte abundances (0.3–100 percent...

In this paper we examine the accuracy and precision of three indices of catch-per-unit-effort (CPUE). We carried out simulations, generating catch data according to six probability distributions (normal, Poisson, lognormal, gamma, delta and negative binomial), three variance structures (constant, proportional to effort and proportional to the squared effort) and their magnitudes (tail weight). ...

Bu çal??man?n amac? Gökçeada (Kuzey Ege Denizi) çevresinde gerçekle?tirilen ticari trol bal?kç?l???ndaki ?skarta, hedef d??? ve av için birim çaba ba??na dü?en miktar?n?n (CPUE) belirlenmesidir. Mart 2015 – Nisan 2017 tarihleri aras?nda k?y?lar?nda teknesi ile toplamda 99.8 saat süreyle 19 çekimi gerçekle?tirilmi?tir. Çal??ma süresince toplam 46 familyaya ait 58 tür 7938 birey yakalanm??t?r. Tü...

The western waters of Sumatera are one the that have potential coastal and ocean resources. Oceanographic factors can be related to high productivity in SST (Sea Surface Temperature) distribution chlorophyll concentration. Sibolga geographically quite strategic, because they located Indian Ocean, most catch is landed at Nusantara Fisheries Port. This Study aims understand trend fluctuations fis...

  Artificial reefs are used to compensate the destruction of marine ecosystems. In the present study, the effects of artificial reefs were compared to natural sites. For this purpose, five treatments including four different forms (Reef ball (R), Laneh Mahi (L), used materials (U) and R+L+U) of artificial reefs and one control were established. The reefs were deployed at Bandar Lengeh, the Pers...

  Artificial reefs are used to compensate the destruction of marine ecosystems. In the present study, the effects of artificial reefs were compared to natural sites. For this purpose, five treatments including four different forms (Reef ball (R), Laneh Mahi (L), used materials (U) and R+L+U) of artificial reefs and one control were established. The reefs were deployed at Bandar Lengeh, the Pers...

How fish communities change with eutrophication in temperate lakes is well documented, while only a few studies are available from subtropical lakes. We investigate the community structure 36 located Yangtze River basin, covering wide nutrient gradient. found that species richness and total catch per unit effort (CPUE) increased significantly chlorophyll (Chla). Among different feeding types, p...

Informasi tentang kondisi perikanan tuna skala kecil di beberapa lokasi Maluku, termasuk Buru Utara adalah sangat terbatas sehingga perlu untuk dieksplorasi. Penelitian ini bertujuan menganalisis armada penangkapan, komposisi ukuran hasil tangkapan, CPUE, dan musim penangkapan. Pengumpulan data dilakukan pada bulan Juli sampai September 2019. Data yang dikumpulkan meliputi jumlah posisi daerah ...

The abundance and species richness of the cartilaginous fish community of the continental shelf and slope off central Chile is described, based on fishery-independent trawl tows made in 2006 and 2007. A total of 194,705 specimens comprising 20 species (9 sharks, 10 skates, 1 chimaera) were caught at depths of 100-500 m along a 1,000 km transect between 29.5°S and 39°S. Sample site locations wer...