. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CUMACEAN DIMORPHISM AND BEHAVIOR 375. FIGURE 3. Scanning electron micrograph of the uropods of mature Almyracuma proximoculi: A) dorsal view of preparatory female; B) same view of copulatory male; C) dorsal view of two most distal spines on left peduncle in (B); D) dorsal view of middle spines on left endopod in (B). 1981), , they are precociously sexually mature at a morphologically immature state. I suggest that the typical distribution of this species in disjunct, dense, intertidal aggregations has eliminated the need
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CUMACEAN DIMORPHISM AND BEHAVIOR 375. FIGURE 3. Scanning electron micrograph of the uropods of mature Almyracuma proximoculi: A) dorsal view of preparatory female; B) same view of copulatory male; C) dorsal view of two most distal spines on left peduncle in (B); D) dorsal view of middle spines on left endopod in (B). 1981), , they are precociously sexually mature at a morphologically immature state. I suggest that the typical distribution of this species in disjunct, dense, intertidal aggregations has eliminated the need for a pheromone-sensitive, highly motile, copu- latory male. This distribution has apparently permitted this species to eliminate a morphologically complex instar that would normally be the final male stage and possibly reduces intraspecific competition for food resources that would otherwise be needed for the elaboration of body parts seen in the males of other species. In Pseudocuma longicornis, another cumacean species, "young males" clasp females, and "fully adult" males, although present, have never been observed in mating pairs (Foxon, 1936; Corey, 1969). This species is most common in low intertidal and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
