2020
DOI: 10.1007/s12237-020-00759-4
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American Lobster, Homarus americanus, Reproduction and Recruitment in a New England Estuary

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citations
Cited by 6 publications
(4 citation statements)
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“…In contrast, further south in the Gulf of Maine, coastal waters are not as cold in the winter and the shallow slope of the continental shelf makes it more difficult for lobsters in nearshore waters to access deep water that would markedly increase their thermal regime in the winter (Mountain and Holzwarth, 1989). These conditions may explain why studies in the southern Gulf of Maine have found little evidence that seasonal migrations significantly increase thermal conditions experienced by lobsters (Cowan et al, 2007;Goldstein and Watson, 2015b;Moore et al, 2020), in contrast to what we (and others) have found in the Bay of Fundy. Further north, in the Gulf of St. Lawrence, ovigerous lobsters are confronted with a three-layer stratification of the water column, in which an intermediate layer of extremely cold water (approximately -1 to 2.5 °C) exists year-round (moves from the surface in winter to 40 m in the summer) and blocks movements to deeper, warmer waters (Gilbert and Pettigrew, 1996).…”
Section: Discussioncontrasting
confidence: 99%
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“…In contrast, further south in the Gulf of Maine, coastal waters are not as cold in the winter and the shallow slope of the continental shelf makes it more difficult for lobsters in nearshore waters to access deep water that would markedly increase their thermal regime in the winter (Mountain and Holzwarth, 1989). These conditions may explain why studies in the southern Gulf of Maine have found little evidence that seasonal migrations significantly increase thermal conditions experienced by lobsters (Cowan et al, 2007;Goldstein and Watson, 2015b;Moore et al, 2020), in contrast to what we (and others) have found in the Bay of Fundy. Further north, in the Gulf of St. Lawrence, ovigerous lobsters are confronted with a three-layer stratification of the water column, in which an intermediate layer of extremely cold water (approximately -1 to 2.5 °C) exists year-round (moves from the surface in winter to 40 m in the summer) and blocks movements to deeper, warmer waters (Gilbert and Pettigrew, 1996).…”
Section: Discussioncontrasting
confidence: 99%
“…6). This observation is consistent with the intriguing hypothesis that ovigerous lobsters might adjust their springtime shoreward migrations to "control" their embryos' later development and hatch time (Cowan et al, 2007;Goldstein and Watson, 2015b;Goldstein and Watson, 2019;Moore et al, 2020), potentially to synchronize the release of their larvae with the presence of their plankton prey (Carlberg et al, 1976;Cushing, 1990;Carloni and Watson, 2018), or to position their larvae in optimal currents for survival (Goldstein and Watson, 2015a). The timing and location of hatch will subject larvae to particular sets of environment factors (e.g., currents and temperature) that will affect their dispersal, the time they spend in the plankton, and their trophic interactions during their planktonic phase (Incze et al, 2006;Xue et al, 2008;Carloni and Watson, 2018).…”
Section: Discussionsupporting
confidence: 88%
“…However, populations will have individuals that may not undertake this seasonal movement [ 3 ], and the Bras d’Or Lake lobsters we tagged clearly did not leave the Lake for the Atlantic Ocean to overwinter. Consistent with this finding, all acoustically tracked berried female lobsters tagged in a New Hampshire estuary in autumn were within 1 km of their fall positions the following May–June [ 39 ]. In contrast, other researchers have found that ovigerous females may move from shallow to deeper water seeking more suitable areas for their eggs to hatch [ 7 ].…”
Section: Discussionmentioning
confidence: 62%
“…The developmental staging of embryos to predict hatching via the inspection of eggs under a microscope is used in current research, e.g., [31][32][33], but the visual clutch staging scheme is also still commonly used as it provides a less invasive and more rapid assessment that can readily be made during fishing activities. Although this classification scheme has been in use for over 40 years in Canada, there are no quantitative estimates of the characteristics of each stage, such as their duration and relative rates of embryonic development.…”
Section: Introductionmentioning
confidence: 99%