Does electric fishing influence movements of fishes in streams? Experiments with brook trout, Salvelinus fontinalis
[No abstract available]
Fisheries Management and Ecology↗
Geology topics
J.R. Moring
Publications and source records attributed to J.R. Moring.
Freshwater fishes of Acadia National Park, Mount Desert Island, Maine
A list of freshwater fishes is presented for Acadia National Park, Mount Desert Island, Maine, based on past survey records, published and unpublished reports, and recent comprehensive surveys within or bordering Park boundaries conducted in 1998 and 1999. Overall, 31 species of fishes have been recorded in freshwaters of the Park or those bordering Park boundaries; 28 of these are still present. Of those, 15 species are likely native to Mount Desert Island, and the indigenous status of one fish species is unknown. The most widely distributed species in lakes and ponds is the golden shiner, Notemigonus crysoleucas Mitchill (83% of ponds), while the most widely-distributed species in brooks is the brook trout, Salvelinus fontinalis Mitchill (56%).
Northeastern Naturalist↗
Intertidal growth of larval and juvenile lumpfish in maine: A 20-year assessment
Larval and juvenile lumpfish, Cyclopterus lumpus L., were collected and measured over a 20-year period, 1979-1999, from tidepools along the coast of Maine. Using this extensive data base reduces the effects of annual variations in hatching times, early growth patterns, and locale for analyzing monthly size using length measurements. This can provide an effective field measurement of intertidal growth. Most fish were encountered during the months of July and August, and even when adjusted for number of sampling trips, 78% of the juveniles were encountered in tidepools during these months. Based on average lengths, size increased by 23% between June and July, 43% between July and August, and 34% between August and September.
Northeastern Naturalist↗
Homing and movement of yellow-phase American eels in freshwater ponds
Ten yellow-phase American eels, Anguilla rostrata, were captured from Hammond Pond, a small freshwater pond located in central Maine, U.S.A. The eels were implanted with radio transmitters and released into nearby Hermon Pond. At the same time, 10 eels were captured from Hermon Pond, implanted with radio transmitters and returned to Hermon Pond to serve as a control group. The two ponds are connected by a 1.6km section of Souadabscook Stream. We tracked the 20 eels over the 90-day duration of the experiment. Four of the ten displaced eels returned to their home pond. None of the control fish were located outside of their home pond during the study. Three of the four eels that successfully returned to their home pond did so under the darkness of the new moon and the fourth made the journey during the first quarter moon phase. Location data showed that translocated and native eels tended to occupy different areas of Hermon Pond. This study provides evidence of homing behavior in American eels living in small freshwater ponds and indications that homing activity may be linked to lunar cycle.
Environmental Biology of Fishes↗
Potential error with in situ surveys of smallmouth bass, Micropterus dolomieu Lacepede, as determined by radio-telemetry
In situ surveys using scuba are important tools in the management of smallmouth bass (Micropterus dolomieu) in boreal, clear lakes of North America. Population estimates that are derived from such surveys may be erroneous if the size composition of the fish observed by divers differs from that of the entire population. Forty-four adult smallmouth bass of three size classes were radio-tagged and tracked during the summer of 1993 (mid June to early September) in Green Lake, Maine, USA, to investigate possible size-related error from observations by divers being towed along the lake shore. Our results indicate that scuba divers may fail to count a significant portion of large smallmouth bass during late summer (mid July to early September), compared to small- or medium-sized fish. The results suggest that scuba surveys should be conducted during early summer (mid June to mid July) to derive more accurate population estimates.
Fisheries Research↗
Relation of adult size to movements and distribution of smallmouth bass in a central Maine Lake
Forty‐four smallmouth bass Micropterus dolomieu of three size‐classes were radio‐tracked in Green Lake, Maine, during summer 1993 (10 June–1 September) to determine whether adult size influenced distribution and movement. Large smallmouth bass (>406 mm) used deep water (>8 m) more often than did small (248–279 mm) or medium‐sized (305–356 mm) smallmouth bass during the late summer (15 July–1 September). Large smallmouth bass also were found at middepths (4–8 m) significantly more often than were small individuals during late summer. Small fish used cover more frequently than large ones during early summer (10 June–13 July). Both small and medium‐sized individuals were associated with cover more frequently than large smallmouth bass were during the late summer. Small smallmouth bass exhibited significantly smaller summer total ranges than did large individuals, and mean active displacement differed among all three size‐classes.
Maine↗