scholarly journals Problems with the terminology proposed by Lavalli & Lawton for certain life history phases of the American lobster Homarus americanus

2000 ◽  
Vol 197 ◽  
pp. 309-310 ◽  
Author(s):  
SL Waddy ◽  
DE Aiken
Keyword(s):  
Life History ◽  
Homarus Americanus ◽  
American Lobster

Relative growth, life-history phases, and sexual maturity of American lobster (Homarus americanus)

2010 ◽  
Vol 88 (4) ◽  
pp. 347-358 ◽  
Author(s):  
Kim Émond ◽  
Bernard Sainte-Marie ◽  
Louise Gendron
Keyword(s):  
Life History ◽  
Sexual Maturity ◽  
Body Part ◽  
Homarus Americanus ◽  
American Lobster ◽  
Body Parts ◽  
Growth Phases ◽  
Major Life ◽  
Relative Growth ◽  
Cephalothorax Length

Previous studies of relative growth in crustaceans have focused primarily on body parts representing sexual characters for the purpose of determining size at onset of sexual maturity. We have revisited the relative growth of abdomen and crusher claw in American lobster ( Homarus americanus H. Milne Edwards, 1837) in a general life-history perspective using a broad spectrum of lobster sizes (6–160 mm cephalothorax length (CL)). Growth phases were recognized by inflections in scatterplots of a body-part measurement against CL. The abdomen is characterized by three growth phases in the male and female, whereas the crusher claw has at least three growth phases in the male and at least two in the female. Additionally, we explored relative growth of gonopod and vas deferens for males of 35–150 mm CL. Both organs exhibit a synchronous change from strong to weak positive growth allometry. The growth phases can be associated with major life-history events including the transition from a cryptic to an overt lifestyle and the onset of physiological, functional, and morphometric maturity. The onset of morphometric maturation inferred from relative growth of abdomen and crusher claw precedes functional maturity in females and follows it in males.

Historical Review of Lobster Life History Terminology and Proposed Modifications To Current Schemes

Crustaceana ◽  
1996 ◽  
Vol 69 (5) ◽  
pp. 594-609 ◽  
Author(s):  
Peter Lawton ◽  
Kari L. Lavalli
Keyword(s):  
Life History ◽  
Size Range ◽  
Historical Review ◽  
Homarus Americanus ◽  
Behavioral Changes ◽  
American Lobster ◽  
Behavioral Attributes ◽  
Developmental Phases ◽  
The Impact ◽  
Current Terminology

AbstractTerms for the life history and developmental phases of the American lobster, Homarus americanus, vary substantially and have been frequently revised (Cobb et al., 1983; Hudon, 1987; Barshaw & Bryant-Rich, 1988; Wahle & Steneck, 1991; Cobb & Wahle, 1994). Their evolution shows several trends: (1) acknowledgement of pronounced morphological, physiological, and behavioral changes accompanying a metamorphic molt into the fourth pelagic stage; (2) recognition of behavioral changes (facilitated by decreasing mortality risk) leading to increased vagility over the size range ~ 5 to 40 mm carapace length (CL), and (3) consideration of the impact of reproductive maturation on lobster movement and social interaction. Before further modifying current terminological schemes (Wahle & Steneck, 1991; Cobb & Wahle, 1994), a historical perspective is provided and problems with existing schemes are presented. Our proposed scheme, which better integrates ecological ontogeny with developmental, biological, and individual behavioral attributes, partitions the life history into seven phases (exclusive of the attached egg and prelarval stages): pelagic larval, postlarval, shelter-restricted juvenile, emergent juvenile, vagile juvenile, adolescent, and adult. It should also provide a template from which to standardize life history schemes for spiny lobsters where there are similar problems with current terminology.

Midgut-Gland Development during Early Life-History Stages of the American Lobster Homarus americanus

1995 ◽  
Vol 15 (4) ◽  
pp. 679 ◽  
Author(s):  
Patricia M. Biesiot ◽  
Judith E. McDowell
Keyword(s):  
Life History ◽  
Early Life ◽  
Early Life History ◽  
Homarus Americanus ◽  
American Lobster ◽  
Midgut Gland ◽  
Life History Stages ◽  
Gland Development

Growth of juvenile American lobster Homarus americanus in a changing environment

2016 ◽  
Vol 557 ◽  
pp. 177-187 ◽  
Author(s):  
MD McMahan ◽  
DF Cowan ◽  
Y Chen ◽  
GD Sherwood ◽  
JH Grabowski
Keyword(s):  
Homarus Americanus ◽  
American Lobster ◽  
Changing Environment

Predicting bycatch hotspots based on suitable habitat derived from fishery-independent data

2020 ◽  
Vol 641 ◽  
pp. 159-175
Author(s):  
J Runnebaum ◽  
KR Tanaka ◽  
L Guan ◽  
J Cao ◽  
L O’Brien ◽  
...  
Keyword(s):  
Habitat Suitability ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Gulf Of Maine ◽  
Homarus Americanus ◽  
Management Tool ◽  
American Lobster ◽  
Suitable Habitat ◽  
Climate Conditions ◽  
Suitability Index

Bycatch remains a global problem in managing sustainable fisheries. A critical aspect of management is understanding the timing and spatial extent of bycatch. Fisheries management often relies on observed bycatch data, which are not always available due to a lack of reporting or observer coverage. Alternatively, analyzing the overlap in suitable habitat for the target and non-target species can provide a spatial management tool to understand where bycatch interactions are likely to occur. Potential bycatch hotspots based on suitable habitat were predicted for cusk Brosme brosme incidentally caught in the Gulf of Maine American lobster Homarus americanus fishery. Data from multiple fisheries-independent surveys were combined in a delta-generalized linear mixed model to generate spatially explicit density estimates for use in an independent habitat suitability index. The habitat suitability indices for American lobster and cusk were then compared to predict potential bycatch hotspot locations. Suitable habitat for American lobster has increased between 1980 and 2013 while suitable habitat for cusk decreased throughout most of the Gulf of Maine, except for Georges Basin and the Great South Channel. The proportion of overlap in suitable habitat varied interannually but decreased slightly in the spring and remained relatively stable in the fall over the time series. As Gulf of Maine temperatures continue to increase, the interactions between American lobster and cusk are predicted to decline as cusk habitat continues to constrict. This framework can contribute to fisheries managers’ understanding of changes in habitat overlap as climate conditions continue to change and alter where bycatch interactions could occur.

Valorization of American lobster ( Homarus americanus ) cooking waters: preparation and characterization of a food ingredient

2021 ◽  
Author(s):  
Ariane Tremblay ◽  
Ronan Corcuff ◽  
Charles Goulet ◽  
Samuel B. Godefroy ◽  
Alain Doyen ◽  
...  
Keyword(s):  
Homarus Americanus ◽  
American Lobster ◽  
Food Ingredient

Predicting the winning or losing of symmetrical contests in the American lobster Homarus americanus (Milne-Edwards)

1997 ◽  
Vol 217 (1) ◽  
pp. 19-29 ◽  
Author(s):  
C. Vye ◽  
J.S. Cobb ◽  
T. Bradley ◽  
J. Gabbay ◽  
A. Genizi ◽  
...  
Keyword(s):  
Homarus Americanus ◽  
American Lobster
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