Fisheries Biology

Hortle 2008 Yield and value of the wild fishery of rice fields in Battambang Province, Cambodia

by Kent Hortle

Growth, Natural Mortality, Length–weight Relationship, Maximum Length and Length-at-first-maturity of the Coelacanth Latimeria chalumnae

by zairion zai

REPORT TO ASMFC COMMITTEE ON ECONOMICS AND SOCIAL SCIENCES: COMMERCIAL SECTOR REFERENCE DOCUMENT ON IDENTIFICATION AND PRIORITIZATION OF ECONOMIC AND SOCIOCULTURAL DATA ELEMENTS

by Patricia Clay

Compiled by sub-committee members: Theophilus Brainerd, Demet Haksever, Madeleine Hall-Arber, Chris Kellog, Andrew Kitts, David McCarron. Contributions to the Sociocultural portions made by Patricia Clay

Williams, J. P., J. T. Claisse, D. J. Pondella, L. Medeiros, C. F. Valle and M. A. Shane. 2012. Patterns of Life History and Habitat Use of an Important Recreational Fishery Species, Spotfin Croaker, and Their Potential Fishery Implications. Marine and Coastal Fisheries 4(1):71-84.

by Jeremy T. Claisse

Abstract Spotfin croakers Roncador stearnsii, a prized recreational catch, were collected throughout the Southern... more Abstract Spotfin croakers Roncador stearnsii, a prized recreational catch, were collected throughout the Southern California Bight, primarily as bycatch from a long-term, scientific gill-net collection effort. The maximum otolith-based age in the present study was 24 years?14 years greater than in a previous scale-based aging study. Multiple models were used to estimate mean length at age, including models that utilize larvae as well as juveniles and adults, and the model selection results suggest sexual dimorphism in growth patterns. The juvenile and adult catch per unit effort reflected a clear pattern of habitat selectivity, with fish strongly preferring soft-bottom habitats. Catches in rocky-reef areas were limited but tended to increase with water temperature. The data also suggest that spotfin croakers segregate themselves sexually during the spawning season, when recreational fishing from jetties will target males and fish caught in bays and estuaries are more likely to be spawning females. These results provide further evidence for the importance of protection and restoration efforts for estuaries and bays along this well-developed coastline. The growth of larvae captured in plankton tows in July and September 2004 was substantially faster than that of larvae sampled in May, which coincided with warmer sea surface temperatures, highlighting a potentially important relationship relating temperature (and therefore geography) and settlement success

Population studies of horse mackerel (Trachurus trachurus (L.)) and herring (Clupea harengus L.) using parasites as biological tags.

by Neil Campbell

Ph.D Thesis, University of Aberdeen, 2008.

The use of parasites as biological tags is a well used tool for fish stock identification. Recently, questions have... more The use of parasites as biological tags is a well used tool for fish stock identification. Recently, questions have been raised as to the appropriateness of stock boundaries in the Atlantic horse mackerel (Trachurus trachurus) and the herring (Clupea harengus) in European waters. Studies of the parasite fauna of these fishes could contribute useful information to resolve these issues.

To this end, nineteen hundred and nineteen horse mackerel were examined from samples taken from up to nineteen sites around Europe in 2000 and 2001. These fish were subject to a complete parasitological examination. This resulted in the discovery of 45 species of parasites. Of these, 11 appear to be new host records, and one may be a new species. A number of these parasites may be suitable for use as biological tags and their application is discussed.

Results showed a significant degree of separation was possible between fish from the North Sea and Western horse mackerel stocks, based on the relative abundance of the nematodes Anisakis spp. and Hysterothylacium sp.. differentiation between Western and Southern stocks and Southern and African stocks is less clear. Results from the Mediterranean Sea suggest three stocks, confined to the  western, central and eastern basins. These findings compare well with results from otolith and body shape morphometry, and a range of genetic markers, which were applied to the same fishes, confirming both the usefulness of investigating parasites as biological tags and the currently applied stock management system.

A neural network approach to classification based on parasitological data was evaluated, and found to be successful in over 90% of cases. This compares favourably with the results obtained by more traditional discriminant analysis  methods. This will be a useful tool for further parasitological studies.

The endoparasitic fauna of four thousand and thirty-three herring at various life stages (juvenile, spawning and non-spawning) from sites to the west of the British Isles and outlier
samples from the North Sea, Baltic Sea and northern Norway, were examined to obtain information on stock identity, mixing and recruitment patterns in these areas. Results revealed that substantial stock mixing takes place to the west of the British Isles, with fish from the Irish Sea, west of Ireland and west of Scotland being found together in non-spawning aggregations to
the west of Scotland. This area is also home to two different spawning populations of fish which recruited from nursery grounds in the eastern North Sea as well as from the west of Scotland, at different times of year. The implications of these findings for fisheries management are discussed.

The ribosomal small sub-unit cytochrome oxidase (I) gene of the parasitic nematode worm, Anisakis simplex s.s., was sequenced from specimens taken from a number of herring
hosts at sites to the west of Scotland, the Irish Sea, south and northwest coasts of Ireland and the Baltic Sea, to investigate any link between parasite population genetics and host population structure. Results revealed the COI gene to be highly variable, with around 50% of worms sequenced having unique haplotypes. There were no population structures evident from principal component analysis of genetic distances. This lack of genetic difference, even between the isolated population from the Baltic Sea and the other sites suggests that genetic diversity of the parasite population is controlled to a much higher degree by the movements of the marine mammals which act as final hosts than by any degree of population structure present in herring.

Comparative Study of Antibacterial Activity Of Garlic And Cinnamon At Different Temperature And Its Application On Preservation Of Fish

by Shivendu Ranjan

Co-Authored with- Nandita Dasgupta, Proud Saha, Madhumita Rakshit, C.Ramalingam.

Journal Name- Advances in Applied Science Research

The antibacterial effect of aqueous garlic and cinnamon extract at five different temperatures (40° C, 60°C, 80° C,... more The antibacterial effect of aqueous garlic and cinnamon extract at five different temperatures (40° C, 60°C, 80° C, 100° C, 120° C) against five multidrug resistant bacterial isolates (2 gram negative and 3 gram positive), including Bacillus cereus, Staphylococcus aureus, Enterococcus faecalis, E. Coli and Proteus mirabilis were studied by well diffusion method. The maximum antibacterial effect of aqueous garlic and cinnamon extract of different temperature obtained in Enterococcus faecalis and E. Coli at 60° C (1.041) and in Enterococcus faecalis at 60° C (0.87) respectively. This antibacterial property was applied on preservation of fish. A time dependent antibacterial study was done using the gum acacia coating with garlic and cinnamon paste. It is observed that the microbial load present on the fish was totally reduced on second day. In short, the aqueous garlic and cinnamon extract and pastes show a wide range of antibacterial activity at 40° C to 60° C and satisfy all the criteria for antibacterial agent as compared to antibiotic Gentamicin. These results suggests that garlic and cinnamon can be used as food preservative and thus the use of other chemical preservatives can be minimized, which would be beneficial for environment and consumer health; or a plastic for food preservation can be invented using the antibacterial activity of garlic and cinnamon, the inner wall of the plastic coated with garlic and cinnamon paste.

Nineteen proposals and notes on fisheries development in India

by Philip Fearnside

Fearnside, P.M. 1970-1971.  Nineteen proposals and notes on fisheries development in India. American Peace Corps, New Delhi, India. (mimeographed).

Aspects of reproductive biology of big eye grunt Brachydeuterus auritus (Valenciennes, 1832)

by FATIMAT ADENIKE ADEBIYI

Adebiyi, F. A. (2012). Aspects of reproductive biology of big eye grunt Brachydeuterus auritus (Valenciennes, 1832). Nature and Science 10 (2): 19 - 24

Aspects of reproductive biology of big eye grunt Brachydeuterus auritus off Lagos coast, Nigeria were investigated and... more Aspects of reproductive biology of big eye grunt Brachydeuterus auritus off Lagos coast, Nigeria were investigated and focussed on sex ratio, gonadosomatic index, stages of gonadal development and fecundity. A total of 450 fish with body length of 11.7 – 19.3 cm (total length) and body weight of 12.4 – 110.5g were used for this study. The sex ratio of B. auritus was 1: 1.11 (male to female). The females were more than the males. However, there was no significant difference (p > 0.05) in sex ratio from the expected 1:1 distribution. Gonadosomatic index ranged from 0.18 – 12.73%. The mean gonadosomatic index was 3.96 ± 0.19%. High gonadosomatic indices were observed in July, August and September which indicated the spawning period and falls within the wet season. Quiescent, maturing and mature ovarian and testicular stages of gonadal development were observed in all samples of B. auritus collected for this study. Fecundity ranged from 12,503 – 74, 045 eggs with a mean of 32, 344 ± 1,889 eggs. This suggested that B. auritus is a low fecund fish. Fecundity–length and fecundity-weight relationships showed positive correlations. The Fecundity-length and fecundity–weight relationships were determined by regression analysis with the regression equation Log F = 1.8985 + 2.2706 Log L (r = 0.5083) for fecundity–length relationship and Log F = 4.0292 + 0.2657 Log W (r = 0.3090) for fecundity-weight relationship. Fecundity was more related to length than to weight. This information is relevant for fisheries recruitment and population dynamics as well as breeding programmes in aquaculture of B. auritus.
[Fatimat Adenike Adebiyi. Aspects of reproductive biology of big eye grunt Brachydeuterus auritus Valenciennes, 1832) . Nature and Science 2012;10(2):19-24]. (ISSN: 1545-0740). http://www.sciencepub.net. 3

Effects of age, size, and density on natural survival for an important coral reef fishery species, yellow tang, Zebrasoma flavescens

by Jeremy T. Claisse

Claisse JT, McTee SA, Parrish JD (2009) Effects of age, size, and density on natural survival for an important coral reef fishery species, yellow tang, Zebrasoma flavescens. Coral Reefs 28:95-105

Lunar and seasonal patterns in fecundity of an indeterminate, multiple-spawning surgeonfish, the yellow tang Zebrasoma flavescens

by Jeremy T. Claisse

BUSHNELL, M. E., CLAISSE, J. T. and LAIDLEY, C. W. 2010. Lunar and seasonal patterns in fecundity of an indeterminate, multiple-spawning surgeonfish, the yellow tang Zebrasoma flavescens. Journal of Fish Biology, 76: 1343-1361

Online supplement to: Habitat- and sex-specific life history patterns of yellow tang Zebrasoma flavescens in Hawaii, USA

by Jeremy T. Claisse

Supplement 1. Validation of annual periodicity of increment formations; Supplement 2. Model selection; Supplement 3. Length–weight sexual dimorphic relationship

Movement of smallmouth bass within the Beaver Island Archipelago, northern Lake Michigan

by Mark Kaemingk

Kaemingk, M.A., T.L. Galarowicz, J. Clevenger, and D.F. Clapp. 2011. Movement of smallmouth bass within the Beaver Island Archipelago, Northern Lake Michigan. Journal of Great Lakes Research 37:625-631.

Fish movement may vary across a wide array of aquatic ecosystems and may be related to the overall size of the system... more Fish movement may vary across a wide array of aquatic ecosystems and may be related to the overall size of the system inhabited. We investigated movement of smallmouth bass in Lake Michigan because this information is lacking for larger systems. A total of 16 smallmouth bass were surgically implanted with ultrasonic transmitters within the Beaver Archipelago, northern Lake Michigan. During 2007–2008, a maximum of one location per individual was recorded daily during three specific tracking periods – pre-spawn, spawning, and post-spawn – to determine diurnal movement patterns. Movement was evaluated as site fidelity, minimum displacement rate, maximum excursion rate, and distance from shore. Smallmouth bass exhibited greater maximum excursion rates during the spawn period compared to pre-spawn. Movement rates did not differ between tracking periods; however, movement rates were greater during the spawn period in 2007 than 2008. Both sexes moved further offshore to deeper water during post-spawn, but females were located further offshore than males during this period. Annual site fidelity was more evident during post-spawn than during spawning for both sexes. Two smallmouth bass emigrated outside of the Archipelago, suggesting this population may be more “open” in terms of individuals moving throughout northern Lake Michigan than previously thought. These results indicate smallmouth bass may move greater distances in larger aquatic systems and therefore larger management units (in terms of total area) should be established in Lake Michigan to account for these greater excursion distances.

Fisheries Bioecology at the Khone Falls (Mekong river, Southern Laos)

by Ian Baird

Eric Baran, Ian G. Baird and Gregory Cans
WorldFish Center (2005)

Aquatic Biodiversity in the Siphandone Wetlands

by Ian Baird

Ian G. Baird
In Daconto, G. (ed.), Siphanone Wetlands, CESVI, Bergamo, Italy (2001)

Bureau of Fisheries: Approved Applications for permits

by Historically Digitized

The Bureau of Fisheries and Aquatic Resources (BFAR) is the government agency responsible for the development, improvement, management and conservation of the country's fisheries and aquatic resources. It was reconstituted as a line bureau by virtue of Republic Act No. 8550 (Philippine Fisheries Code of 1998). The bureau is under the Department of Agriculture.

Sofia Ner Gonzales Tirol No. 4431

Dietary Items and Feeding Habits of Sompat Grunt Pomadasys jubelini (Cuvier, 1830)

by FATIMAT ADENIKE ADEBIYI

Adebiyi, F. A. (2011). Dietary items and feeding habits of sompat grunt Pomadasys jubelni (Cuvier, 1830). Nature and Science 9 (12): 69-75.

Investigation on dietary items and feeding habits of the sompat grunt Pomadasys jubelini off Lagos coast, Nigeria was... more Investigation on dietary items and feeding habits of the sompat grunt Pomadasys jubelini off Lagos coast, Nigeria was carried out in order to identify the dietary items of P. jubelini and determine its feeding habits. The analysis of stomach content was done by numeric, occurrence and volumetric methods. The results showed that the dietary items of P. jubelini were molluscs, crustaceans, fish, annelids and algae. P. jubelini had molluscs and crustaceans as the main dietary items which accounted for 44.0% and 41.1% by number, 53.2% and 72.7% by occurrence and 32.0% and 48.6% by volume respectively. P. jubelini is a non-piscivorous predatory fish which feeds mainly on other macroscopic animals other than fish. This information will contribute to existing knowledge of the fish biology of P. jubelini with particular reference to feeding and will be useful for aquaculture and fishery management of P. jubelini.

Morphology and pathology of the ectoparasitic copepod, Nicothoë astaci (‘lobster louse’) in the European lobster,Homarus gammarus.

by Ed Pope

Age and growth of Mediterranean marine fishes

by Athanassios Tsikliras

Stergiou KI, Tsikliras AC, Apostolidis CA (2006) Age and growth of Mediterranean marine fishes. In: MLD Palomares, KI Stergiou, D Pauly (eds) Fishes in databases and ecosystems. Fisheries Centre Research Reports 14 (4): 18-21

Distinguishing Wild from Hatchery-Produced Juvenile Red Snapper with Otolith Chemical Signatures

by William Patterson

Abstract.—Otolith chemical signatures were evaluated as natural tags to distinguish wild from hatchery producedmore Abstract.—Otolith chemical signatures were evaluated as natural tags to distinguish wild from hatchery produced
juvenile red snapper Lutjanus campechanus. Otoliths were sampled from 59 hatchery-reared fish and 146 wild fish collected over the continental shelf from northwest Florida to Texas. One sagitta from each fish was cleaned, dissolved in ultrapure nitric acid, and analyzed with sector field inductively coupled plasma mass spectrometry to test for differences in otolith element:Ca ratios (Ba:Ca, Li:Ca, Mg:Ca, Mn:Ca, and
Sr:Ca) between wild and hatchery fish. The second sagitta was cleaned, ground to a fine powder, and analyzed with stable isotope ratio mass spectrometry to test for differences in delta (d) values of the stable isotopes 13C and 18O. Significant differences existed in otolith chemical signatures between hatchery and wild juveniles (multivariate analysis of variance, Pillai’s trace: P , 0.001). Jackknifed classification accuracies from linear discriminant function analysis indicated that hatchery fish could be distinguished from wild fish with 100%
accuracy based on otolith chemical signatures. The most important otolith chemistry feature in distinguishing hatchery from wild fish was d13C, with the mean difference in d13C between hatchery and wild fish (!2.6%) being similar to the mean difference in d13C between hatchery feeds and the predominant food of wild juveniles (!2.8%). Overall, results suggest that otolith chemical signatures may be employed as effective natural tags for mass marking of future stockings of red snapper or other marine fishes to estimate the hatchery contribution to wild populations.

The real maccoyii: identifying tuna sushi with DNA barcodes – contrasting characteristic attributes and genetic distances.

by Sergios-Orestis Kolokotronis

PLoS ONE