Van Lieshout 1
Selectivity for barramundi ( Lates calcarifer ) in the Fly River, Papua New
Guinea: implications for managing gill-net fisheries on protandrous fishes Biotic
1.
Overfishing and possible solutions to increase the population of barramundi fish.
2.
Fishing for barramundi removed a lot of adults, and then people started fishing for juvenile which also would lead to a decreased number of adults. The parliament passed laws making it illegal to catch juvenile fish during the migrating period to spawning grounds. The results show that more sexually mature female barramundi survive, thus producing more eggs, when fishing is restricted to 8.9 cm mesh nets. For males, the net size just determines the age of males harvested, but for females the size of the net determines how many fish will be around to spawn. Egg production would be reduced with using larger mesh sizes and should be discouraged. They encouraged a mazimum limit for mesh size and moderate levels of fishing effort.
3.
They gave a better visual especially when discussing the normal curves and other statistical data.
Response of barramundi Lates calcarifer , populations in the Fly River, Papua New
Guinea to mining, fishing and climate-related perturbation. Abiotic
1.
Temperature, fishing, and they thought possibly the output from the mine in the water/environment.
2.
Mining was found not to be a negative factor. Fishing like previous paper I talked about was, but temperature/rainfall was negatively correlated. Habitat loss has played a larger affect on the barramundi than the actual runoffs from the mine.
They showed an increase in catching rate which shows that TSS and Cu probably

Van Lieshout 2 do not affect the barramundi. Migration intensity might be related to dropping water levels in the middle Fly River during the late dry season, forcing fish into the main river. Effect of ENSO drought and flood events suggest that recruitment and subsequent adult catch was better during years of below average monsoonal rainfall. Breeding season starts before monsoon season, if barramundi didn’t breed then other fish would prey on larvae and they would be at a size disadvantage.
3.
Figure 1 was a map which is helpful because most Americans don’t know all the rivers in Australia. Then they gave tables of the data collected such as presence of copper, temperature and such to allow the person to compare the data for his or herself. Figure 2 showed the catch rate for the different data spots per year showing how they varied individually.
Growth and survival of age-0 walleye……. Biotic
1.
Prey availability, predation, and abiotic factors
2.
Prey abundance was important in determining growth and survival of all sizes of walleye. Temperature affected the growth and survival of both larval and larger walleye. Predation effected larval walleye survival. Zooplankton abundance did not correlate to either growth or survival of the fish. Competition with other fish and/or differing habitat preferences of gape limitations could have been reasons for the lack of correlation between forage fish occupancy and walleye growth/survival. Latitude influenced growth/survival as did cooler water temperatures. They believe that their models can be used to estimate walleye recruitment and would help people maximize the success of restocking programs.

Van Lieshout 3
3.
Semi-helpful, when you were getting tangled up in scientific garble it helped to have a picture to go along with it to second way to input the knowledge.
Environmental Influences on Walleye Fingerling Production in …… Abiotic
1.
Environmental Influences such as levels of phosphorus, chlorophyll a , nitrogen,
Secchi disk depth, other fish, and water conductivity.
2.
Their data revealed relationships, but lacked strength. They attributed this to the complexity of factors in determining walleye fingerling rearing success. The levels of phosphorus, chlorophyll a , and nitrogen were positively related to how well walleye fingerlings survived. Ther was a negative association with high conductivity and high Secchi disk transparencies. Walleye also rely on primary production to succeed. Macro invertebrates’ abundance is not related to walleye production. Other fish being present does decrease walleye chances for production.
3.
For someone who is not familiar with lakes/ponds in Minnesota the map figure was easy to read. Table 1 is just showing where the percentages in the text came from which is needed for proof in the paper, but not needed for further understanding. Figures 2 and 3 give a visual representation of the level of correlation, breaks the result data down to picture.
Citations: Papers in order of review
Milton, D., Die, D., Tenakanai, C., and Swales, S. 1998. Selectivity for barramundi
( Lates calcarifer) in the Fly River, Papua New Guinea: implications for managing gill-net fisheries on protandrous fishes. Marine and Freshwater Research 49:499-506.

Van Lieshout 4
Milton, D., Yarrao, M., Fry, G., and Tenakanai, C. 2005. Response of barramundi, Lates calcarifer, populations in the Fly Friver, Papua New Guinea to mining, fishing and climate-related perturbation. Marine and Freshwater Research , 56, 969-981.
Hoxmeier, J., Wahl, D., Brooks, C., and Heidinger, R., 2006. Growth and survival of age-
0 walleye (Sander vitreus): interactions among walleye size, prey availability, predation, and abiotic factors. Canadian Journal of Fisheries and Aquatic Sciences 63: 2173-2182.
Ward, M., Fisher, S., Willis, D., 2007. Environmental Influences on Walleye Fingerling
Production in Southwestern Minnesota Shallow Lakes. North American Journal of
Aquaculture 69: 297-304.

Van Lieshout 5