Species composition, distribution, and summer emergence phenology of stoneflies (Insecta: Plecoptera) from Catamaran Brook, New Brunswick

1996 ◽  
Vol 74 (7) ◽  
pp. 1260-1267 ◽  
Author(s):  
Donna J. Giberson ◽  
Heather L. Garnett
Keyword(s):  
Atlantic Salmon ◽  
Species Composition ◽  
New Brunswick ◽  
Timber Harvest ◽  
Atlantic Canada ◽  
Base Line ◽  
Composition Distribution ◽  
Cone Type ◽  
Emergence Traps ◽  
Discharge Patterns

Stonefly (Plecoptera) emergence was investigated between May and September of 1993 and 1994 in Catamaran Brook, New Brunswick, as part of a base-line study to evaluate the effects of timber harvest on Atlantic salmon habitat in Atlantic Canada. Thirty-one stonefly species representing seven families were identified from Catamaran Brook, of which 8 were new provincial records. Eight species, all in the families Chloroperlidae and Leuctridae, were common in both years. The cone-type emergence traps used in this study appeared to adequately sample most stonefly species except the Perlidae. There was a pronounced seasonal progression of species emerging from the brook that was generally constant for both years. However, the abundance and timing of stonefly emergence were related to both temperature and discharge patterns. Generally earlier emergence in 1994 than 1993 was probably related to warmer water in 1994 than 1993, and lower abundance in 1994 was probably related to a reduction in habitat due to unusually low water in that year.

Relationship of upstream migrating adult Atlantic salmon (Salmo salar) and stream discharge within Catamaran Brook, New Brunswick

2007 ◽  
Vol 64 (3) ◽  
pp. 563-573 ◽  
Author(s):  
Sean C Mitchell ◽  
Richard A Cunjak
Keyword(s):  
Body Size ◽  
Atlantic Salmon ◽  
New Brunswick ◽  
Salmo Salar ◽  
Predictive Ability ◽  
River System ◽  
Low Flow ◽  
Stream Discharge ◽  
Atlantic Salmon Salmo Salar ◽  
Adult Abundance

Stream discharge has long been associated with abundance of returning adult spawning salmonids to streams and may also affect body size distribution of adult salmon as low flows interfere with returns of larger-bodied fish. We examined these relationships of abundance and body size within Catamaran Brook, a third-order tributary to the Miramichi River system of New Brunswick, Canada, to investigate the causes of a declining trend in annual returns of Atlantic salmon (Salmo salar) to this stream. Regression models of adult abundance, proportion of the run as grilse, and body size of returning adults as functions of maximum daily stream discharge during the period of upstream spawner migration were constructed. Adult abundance shows a logarithmic relationship with stream discharge and provides good predictive ability, while appearing to not be significantly related to adult abundance in the larger Miramichi system. The proportion as grilse in the run and female body size are also logarithmically related to stream discharge, with low flow years being very influential in the regressions. These relationships of Atlantic salmon population abundance and body size characteristics have implications with respect to stock integrity and production of the following generation.

scholarly journals Maternal transfer of carbon and nitrogen to progeny of sea-run and resident brook trout (Salvelinus fontinalis)

2008 ◽  
Vol 65 (10) ◽  
pp. 2201-2210 ◽  
Author(s):  
Timothy D. Jardine ◽  
Eric Chernoff ◽  
R. Allen Curry
Keyword(s):  
New Brunswick ◽  
Early Life ◽  
Brook Trout ◽  
Salvelinus Fontinalis ◽  
Early Life History ◽  
Maternal Transfer ◽  
Salmonid Fishes ◽  
Energy Reserves ◽  
Carbon And Nitrogen ◽  
Emergence Traps

Early-life history characteristics of sea-run and resident salmonid fishes that co-exist in sympatry are poorly understood. To assess differences in characteristics of offspring of these two strategies following their emergence to the stream, stable isotope ratios (δ13C and δ15N) were used to identify the progeny of resident and sea-run female brook trout ( Salvelinus fontinalis ) in a tributary of the Miramichi River, New Brunswick, Canada. Upon emergence, sea-run progeny captured in emergence traps were longer, heavier, and had higher carbon to nitrogen ratios (C/N, an indicator of lipid content) than resident progeny, but did not have a higher body condition. After some feeding and growth in the stream, sea-run progeny (still identifiable by their δ13C and δ15N) captured in dip-nets became longer, heavier, had higher C/N, and had higher condition than resident progeny. The proportion of fish caught in dip nets at sites where the two forms co-existed was dominated by offspring of sea-run females (sea-run = 56%, resident = 19%, unknown = 25%). These analyses suggest that offspring of sea-run, female trout benefit from maternally derived energy reserves gained at sea and thus have potential adaptive advantages over offspring of residents.

Seagrasses from the Nansei Islands, Southern Japanese Archipelago: species composition, distribution and biogeography

2006 ◽  
Vol 27 (4) ◽  
pp. 290-298 ◽  
Author(s):  
John Kuo ◽  
Ziyusei Kanamoto ◽  
Hitoshi Iizumi ◽  
Keiko Aioi ◽  
Hiroshi Mukai
Keyword(s):  
Species Composition ◽  
Composition Distribution ◽  
Japanese Archipelago ◽  
Nansei Islands

scholarly journals Species diversity and distribution of mud crab in Marudu Bay mangrove forest reserve, Sabah, Malaysia

2019 ◽  
Vol 3 (1) ◽  
pp. 18-24
Author(s):  
Nurul Ain Mohd Sharif ◽  
Noor Amalia Shaiful Kahar ◽  
Muhammad Ali Syed Hussein ◽  
Julian Ransangan ◽  
Annita Seok-Kian Yong
Keyword(s):  
Species Composition ◽  
Water Salinity ◽  
Suitable Habitat ◽  
River Channels ◽  
Mud Crab ◽  
Catch Per Unit Effort ◽  
Composition Distribution ◽  
Unit Effort ◽  
Average Water ◽  
Mud Crabs

Sabah has extensive mangrove forests surrounded by oceanic waters which provide suitable habitat for many species of animals including mud crabs (Scylla spp.). This study was conducted to obtain information on the species composition, distribution and catch per unit effort in Marudu Bay, Sabah. Samplings were done monthly in five mangrove areas along the river channels in Marudu Bay (06°33’N; 114°44’E) from October 2012 to September 2013 using collapsible baited crab traps. From a total of 1859 mud crab specimens caught in Marudu Bay, three species were identified. Scylla tranquebarica was the dominant species forming 78% of the total followed by S. paramamosain 13% and S. olivacea 8%. The number of males (n=1224) was higher compared to females (n=635) with an average sex ratio male : female of 1.0:0.5. The catch per unit effort (CPUE) showed an average value of 0.55 trap-1 day-1 and revealed a declining trend throughout the sampling. S. tranquebarica was widely distributed in all the rivers surveyed, however, it mostly occurred in near the lower reaches of the river near the areas open to the sea where average water salinity ranged from 12.98 to 14.28 ppt and the environment favoured the growth of Rhizophora sp. Other species, S. paramamosain and S. olivacea, were mostly found in upstream areas covered generally by Nypa sp. and where average water salinity varied from 6.93 to 7.50 ppt. The information on the species composition, distribution and CPUE of the mud crabs in Marudu Bay can be useful for mud crab fisheries resources management in Sabah.

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