Reducing small shrimps in the Gulf of Maine pink shrimp fishery with a new size-sorting grid system Pingguo He, Institute for the Study of Earth, Oceans and Space and NH Sea Grant University of New Hampshire, Durham, NH. (603) 862-3154, [email protected] Vincent Balzano, F/V “North Star”, Saco, Maine, USA INTRODUCTION Since the implementation of the Nordmore Grid in the Gulf of Maine pink shri...

The present study aimed to establish spatiotemporal food and feeding habits of the crab Pachygrapsus marmoratus inhabiting rocky shores southern Mediterranean Sea coast, exemplified by Al-Haniyah, Al-Hamamah, Susah sites in eastern Libya, relate them morphometric traits, abundance organisms habitat. A total 425 crabs collected during 2019 were used study. minimum maxim carapace length (CL), wei...

The turtle shell is an evolutionary novelty in which the developmental pattern of the ribs is radically modified. In contrast to those of other amniotes, turtle ribs grow laterally into the dorsal dermis to form a carapace. The lateral margin of carapacial primordium is called the carapacial ridge (CR), and is thought to play an essential role in carapace patterning. To reveal the developmental...

Boxfishes (Teleostei: Ostraciidae) are rigid-body, multi-propulsor swimmers that exhibit unusually small amplitude recoil movements during rectilinear locomotion. Mechanisms producing the smooth swimming trajectories of these fishes are unknown, however. Therefore, we have studied the roles the bony carapaces of these fishes play in generating this dynamic stability. Features of the carapaces o...

One of the major remaining gaps in the vertebrate fossil record concerns the origin of turtles. The enigmatic little reptile Eunotosaurus could represent an important transitional form, as it has a rudimentary shell that resembles the turtle carapace.

—Two new species of freshwater crabs of the genus Ptychophallus Smalley, from Panama, P. uncinatus and P. kuna, are described and illustrated. The addition of these two species means the genus now includes 13 species, all of which are distributed in Panamd and Costa Rica. The species are distinguished primarily by differences in characters of the male first gonopod. A sunmiary of the geographic...

The aim of this study is to determine the effect mesh size on catches small crab (Portunus sp.) both in number, carapace length (CL), and catchability between modified control collapsible pot. This used wrapping net (PE) from 2.5 cm (± 1 inch) 7.0 inches) with 20 units repetitions (trips). results showed that different has a significant catch However, 2.5-inch size- larger = 42 individuals (85....