Effects of exogenous ecdysones on the molt cycles of fourth and fifth stage american lobsters, Homarus americanus

EFFECTS OF EYESTALK ABLATION ON LARVAL MOLTING RATES AND MORPHOLOGICAL DEVELOPMENT OF THE AMERICAN LOBSTER,HOMARUS AMERICANUS

“…This includes juvenile (Mauviot and Castell, 1976;Trider et ai, 1979;Chang and Bruce, 1980) and adult Homarus americanus (Mauviot and Castell, 1976). Our results support the observations of others of molt and growth rate enhancement by destalking lobster larvae (Rao et al, 1973;Charmantier et ai, 1985). Removal of eyestalks early in the 2nd stage resulted in a slightly accelerated molt to 3rd stage.…”

EFFECTS OF EYESTALK ABLATION ON LARVAL MOLTING RATES AND MORPHOLOGICAL DEVELOPMENT OF THE AMERICAN LOBSTER,HOMARUS AMERICANUS

“…This includes juvenile (Mauviot and Castell, 1976;Trider et ai, 1979;Chang and Bruce, 1980) and adult Homarus americanus (Mauviot and Castell, 1976). Our results support the observations of others of molt and growth rate enhancement by destalking lobster larvae (Rao et al, 1973;Charmantier et ai, 1985). Removal of eyestalks early in the 2nd stage resulted in a slightly accelerated molt to 3rd stage.…”

Biochemical changes associated with embryonic and larval development in the American lobster Homarus americanus Milne Edwards

“…The present technique uses the tissue characteristics and spines and setae of both the telson and uropods to molt stage the animal. This is similar to the technique used by Rao et al (1973) to molt stage fourth and fifth stage~americanus and to Aiken's (1973Aiken's ( ,1980 technique, using the pleopod setae, to molt stage adult H. americanus. In the method of Rao et al (1973) stage E was further subdivided.…”

“…This is similar to the technique used by Rao et al (1973) to molt stage fourth and fifth stage~americanus and to Aiken's (1973Aiken's ( ,1980 technique, using the pleopod setae, to molt stage adult H. americanus. In the method of Rao et al (1973) stage E was further subdivided. In Aiken's (1973Aiken's ( ,1980 technique, stages C, Do and D2 were further subdivided and D2 was distinguished from D 3 • These subdivisions were not used in the present work.…”

RESPIRATORY METABOLISM OFMACROBRACHIUM OLFERSII(WIEGMANN) ZOEAE DURING THE MOULTING CYCLE FROM ECLOSION TO FIRST ECDYSIS

“…Broad and Hubschman (1963), observing the larval development of Palaemonetes kadiakensis, noted gross morphological details associated with post-moult stages and suggested that the proecdysial stages may be of relatively long duration. Rao et al (1973) briefly characterized Stages C and Do-Dl"' of fourth and fifth stage Homarus americanus larvae. Like the first zoea of M. olfersii, Stage Do in these larvae was characterized by retraction of the epidermis, and Stages D1'-D '' by formation of new setae.…”

EFFECTS OF EYESTALK ABLATION ON LARVAL MOLTING RATES AND MORPHOLOGICAL DEVELOPMENT OF THE AMERICAN LOBSTER,HOMARUS AMERICANUS

“…This includes juvenile (Mauviot and Castell, 1976;Trider et ai, 1979;Chang and Bruce, 1980) and adult Homarus americanus (Mauviot and Castell, 1976). Our results support the observations of others of molt and growth rate enhancement by destalking lobster larvae (Rao et al, 1973;Charmantier et ai, 1985). Removal of eyestalks early in the 2nd stage resulted in a slightly accelerated molt to 3rd stage.…”

Biochemical changes associated with embryonic and larval development in the American lobster Homarus americanus Milne Edwards

“…The present technique uses the tissue characteristics and spines and setae of both the telson and uropods to molt stage the animal. This is similar to the technique used by Rao et al (1973) to molt stage fourth and fifth stage~americanus and to Aiken's (1973Aiken's ( ,1980 technique, using the pleopod setae, to molt stage adult H. americanus. In the method of Rao et al (1973) stage E was further subdivided.…”

“…This is similar to the technique used by Rao et al (1973) to molt stage fourth and fifth stage~americanus and to Aiken's (1973Aiken's ( ,1980 technique, using the pleopod setae, to molt stage adult H. americanus. In the method of Rao et al (1973) stage E was further subdivided. In Aiken's (1973Aiken's ( ,1980 technique, stages C, Do and D2 were further subdivided and D2 was distinguished from D 3 • These subdivisions were not used in the present work.…”

RESPIRATORY METABOLISM OFMACROBRACHIUM OLFERSII(WIEGMANN) ZOEAE DURING THE MOULTING CYCLE FROM ECLOSION TO FIRST ECDYSIS

“…Broad and Hubschman (1963), observing the larval development of Palaemonetes kadiakensis, noted gross morphological details associated with post-moult stages and suggested that the proecdysial stages may be of relatively long duration. Rao et al (1973) briefly characterized Stages C and Do-Dl"' of fourth and fifth stage Homarus americanus larvae. Like the first zoea of M. olfersii, Stage Do in these larvae was characterized by retraction of the epidermis, and Stages D1'-D '' by formation of new setae.…”

EFFECTS OF EYESTALK ABLATION ON LARVAL MOLTING RATES AND MORPHOLOGICAL DEVELOPMENT OF THE AMERICAN LOBSTER,HOMARUS AMERICANUS

“…This includes juvenile (Mauviot and Castell, 1976;Trider et ai, 1979;Chang and Bruce, 1980) and adult Homarus americanus (Mauviot and Castell, 1976). Our results support the observations of others of molt and growth rate enhancement by destalking lobster larvae (Rao et al, 1973;Charmantier et ai, 1985). Removal of eyestalks early in the 2nd stage resulted in a slightly accelerated molt to 3rd stage.…”

Biochemical changes associated with embryonic and larval development in the American lobster Homarus americanus Milne Edwards

“…The present technique uses the tissue characteristics and spines and setae of both the telson and uropods to molt stage the animal. This is similar to the technique used by Rao et al (1973) to molt stage fourth and fifth stage~americanus and to Aiken's (1973Aiken's ( ,1980 technique, using the pleopod setae, to molt stage adult H. americanus. In the method of Rao et al (1973) stage E was further subdivided.…”

“…This is similar to the technique used by Rao et al (1973) to molt stage fourth and fifth stage~americanus and to Aiken's (1973Aiken's ( ,1980 technique, using the pleopod setae, to molt stage adult H. americanus. In the method of Rao et al (1973) stage E was further subdivided. In Aiken's (1973Aiken's ( ,1980 technique, stages C, Do and D2 were further subdivided and D2 was distinguished from D 3 • These subdivisions were not used in the present work.…”

RESPIRATORY METABOLISM OFMACROBRACHIUM OLFERSII(WIEGMANN) ZOEAE DURING THE MOULTING CYCLE FROM ECLOSION TO FIRST ECDYSIS

“…Broad and Hubschman (1963), observing the larval development of Palaemonetes kadiakensis, noted gross morphological details associated with post-moult stages and suggested that the proecdysial stages may be of relatively long duration. Rao et al (1973) briefly characterized Stages C and Do-Dl"' of fourth and fifth stage Homarus americanus larvae. Like the first zoea of M. olfersii, Stage Do in these larvae was characterized by retraction of the epidermis, and Stages D1'-D '' by formation of new setae.…”