The purpose of this study was to determine whether female American lobsters (Homarus americanus) inhabiting different offshore areas reached sexual maturity at different sizes. We determined the sexual maturity of 734 lobsters captured in three different offshore locations (North: Georges Bank and offshore Gulf of Maine; Middle: southern New England shelf and slope and; South: offshore Rhode Island to New Jersey) using a combination of methods including abdominal width : carapace length ratios, cement gland examination, and ovarian staging. Lobsters that experienced the most degree-days > 8°C (dd) reached sexual maturity at smaller sizes. The size at which 50 percent of the lobsters were mature was 79 mm CL for the South (annual dd = 808), 82 mm CL for the Middle (999 dd), and 92 mm CL for the North (234 dd). This regional difference in size at maturity was also manifested in the average size, and range of sizes, of berried females captured in each location. These data will likely be of use when developing appropriate regulations for managing the offshore fishery.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 25 • No. 4