The life history of Diastylis quadrispinosa (Sars, 1871) (Crustacea: Cumacea) in Passamaquoddy Bay, New Brunswick

1983 ◽  
Vol 61 (1) ◽  
pp. 108-111 ◽  
Author(s):  
S. Corey
Keyword(s):  
Life History ◽  
New Brunswick ◽  
Life Span ◽  
Late Fall ◽  
Passamaquoddy Bay ◽  
History Of ◽  
Gravid Females

Diastylis quadrispinosa inhabiting depths of 5–60 m in Passamaquoddy Bay breeds during late fall. Gravid females overwinter and release young during April to about mid-May. The life span is 5–6 months for males and 12–13 months for females. Females produce one brood with a mean fecundity of 67.2 (range, 26–149).

The life history of Diastylis sculpta Sars, 1871 (Crustacea: Cumacea) in Passamaquoddy Bay, New Brunswick

1976 ◽  
Vol 54 (5) ◽  
pp. 615-619 ◽  
Author(s):  
Susan Corey
Keyword(s):  
Life History ◽  
New Brunswick ◽  
Life Span ◽  
Shallow Water ◽  
Maximum Life Span ◽  
Summer Generation ◽  
Passamaquoddy Bay ◽  
History Of ◽  
The Mean ◽  
Gravid Females

Diastylis sculpta was collected from shallow water (1–15 m) in Passamaquoddy Bay over a 26-month period. D. sculpta produces a rapidly growing and developing summer generation between two successive winter generations. The overwintering generation releases young in mid-July and late August. The summer generation releases young in November. The mean fecundity of the summer-gravid females (78.4) is much greater than the mean fecundity (20.0) of the fall-gravid females. The maximum life-span is 5 months and 12 months for members of the summer and winter generations respectively.

Life history of Mysis stenolepis Smith (Crustacea, Mysidacea)

1975 ◽  
Vol 53 (7) ◽  
pp. 942-952 ◽  
Author(s):  
T. Amaratunga ◽  
S. Corey
Keyword(s):  
Young Adults ◽  
Life History ◽  
New Brunswick ◽  
Shallow Water ◽  
Field Study ◽  
Sexual Maturity ◽  
Developmental Stages ◽  
Shallow Waters ◽  
Passamaquoddy Bay ◽  
History Of

A 17-month field study showed that Mysis stenolepis in Passamaquoddy Bay, New Brunswick lives for about 1 year. Young are released in shallow water early in spring and grow rapidly during the summer. In the fall, young adults migrate to deeper water where they reach sexual maturity. Transfer of sperm lakes place during winter in deeper regions of the Bay. soon after which the males die. Females survive and in spring migrate to shallow waters to release young after which they die. Females breed once and carry an average of 157 young per brood. Developmental stages of the postmarsupial young are described and discussed.

Aspects of the life history of Meganyctiphanes norvegica (M. Sars), Crustacea (Euphausiacea), in Passamaquoddy Bay

1974 ◽  
Vol 52 (4) ◽  
pp. 495-505 ◽  
Author(s):  
K. W. Hollingshead ◽  
S. Corey
Keyword(s):  
Life History ◽  
Life Span ◽  
Sexual Maturity ◽  
Gonadal Development ◽  
Age Group ◽  
Group I ◽  
Passamaquoddy Bay ◽  
History Of ◽  
Meganyctiphanes Norvegica ◽  
First Time

Monthly collections of Meganyctiphanes norvegica for a 19-monih period in Passamaquoddy Bay showed that these euphausiids were present in the bay in varying numbers from February to November but virtually disappeared in December and January. Sexual maturity is attained in 1 year with gonadal development taking 3 months, and spawning occurring in July and August. The resulting generation will breed and spawn for the first time the next July as age group I. Age group I grows from April until August; from September until March, very little growth occurs. After a second breeding and spawning, the animals die, having a life span of 2 years.

THE ECOLOGY AND LIFE HISTORY OF RETUSA OBTUSA (MONTAGU) (GASTROPODA, OPISTHOBRANCHIA)

1967 ◽  
Vol 45 (4) ◽  
pp. 397-405 ◽  
Author(s):  
S. Tyrell Smith
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Life Span ◽  
High Tide ◽  
Breeding Period ◽  
Protandrous Hermaphrodite ◽  
History Of ◽  
Natural Breeding ◽  
One Year ◽  
Short Time

The habitat, diet, life history, and reproductive cycle of Retusa obtusa were investigated over a period of [Formula: see text] years in a population found in the Inner Harbour at Barry, Glamorgan, U.K. A technique was devised for extracting Retusa from the mud of this area. R. obtusa occurs in the topmost 3.5 cm of fine mud covering Barry harbor, which is immersed by the sea for only a short time at each high tide. The principal prey was found to be Hydrobia ulvae.The life cycle was found to be annual, the adults dying in spring, following the natural breeding season. Occasionally, a short extra breeding period occurs in the fall. The life span in no case greatly exceeded one year. Retusa is a protandrous hermaphrodite, and copulates in the fall. The eggs mature through the late fall and the winter, a few at a time, until oviposition occurs in the spring. The average number of eggs produced per individual was 33, deposited in 1–4 egg batches. Development is direct.

The life history of Thysanoessa inermis (Krøyer) in the Bay of Fundy

1978 ◽  
Vol 56 (3) ◽  
pp. 492-506 ◽  
Author(s):  
David W. Kulka ◽  
S. Corey
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Growth Pattern ◽  
Gonadal Development ◽  
Class I ◽  
Bay Of Fundy ◽  
Eye Morphology ◽  
Passamaquoddy Bay ◽  
History Of

A 4-year study of the life history of Thysanoessa inermis was conducted in Passamaquoddy Bay. A comparison of the growth pattern and eye morphology showed that Th. inermis in Passamaquoddy Bay is part of a Bay of Fundy population centered in the Grand Manan Basin. Spawning occurs in the spring and the young stages are found near the surface during the summer. Thysanoessa inermis lives for 2 years in the Bay of Fundy and spawns at the end of the 1st and 2nd years. Gonadal development is described in detail. Growth in both years is rapid during the summer months with little or no increase in size during the winter. The growth rate of the female surpasses that of the males in the 2nd year. The neglecta form of Th. inermis (year class 0 animals) lives in the middle to upper layers and is morphologically different from the inermis form (year class I animals) which lives in the deepest layers.

Life history of Neoplasta parahebes (Diptera: Empididae: Hemerodromiinae)

2011 ◽  
Vol 143 (4) ◽  
pp. 392-398
Author(s):  
J. Robert Harkrider
Keyword(s):  
Life History ◽  
Wood Surface ◽  
Room Temperature ◽  
Mountain Stream ◽  
Dead Tree ◽  
History Of ◽  
Ovipositor Morphology ◽  
Decaying Wood ◽  
Gravid Females ◽  
Wood Boring

AbstractThe life history of Neoplasta parahebes MacDonald and Turner in a mountain stream in Southern California is reported. Female N. parahebes were separated from sympatric female Neoplasta hebes Melander by ovipositor morphology. Adults readily fed on adult midges (Diptera: Chironomidae) smaller than themselves. Ovarioles of gravid females contained an average of 74.8 eggs. Mating occurred in a unidirectional position. Females oviposited under the bark of submerged decaying wood. Eggs averaged 459 μm × 115 μm in size; most were laid within a 24 h period and, at room temperature, hatched in 10–11 days. There are three larval instars. Densities of larval N. parahebes were as high as 9.2 per 100 cm2 of wood surface in submerged dead tree branches. Branches also contained larvae of Orthocladius lignicola Kieffer, a wood-boring chironomid; larval N. parahebes readily fed on the midge larvae in their tunnels. Pupation occurred in the decaying wood.

STUDIES OF WESTERN TREE RUSTS: III. MILESIA LAEVIUSCULA, A NEEDLE RUST OF GRAND FIR

1957 ◽  
Vol 35 (6) ◽  
pp. 885-894
Author(s):  
G. Ziller
Keyword(s):  
Life History ◽  
Primary Infection ◽  
Early Winter ◽  
Alternate Host ◽  
Alternate Hosts ◽  
Abies Grandis ◽  
Long Period ◽  
Late Fall ◽  
History Of ◽  
First Time

From observations in the field and the results of inoculation experiments it has been discovered that Milesia laeviuscula (Diet. & Holw.) Faull causes a needle rust on the current year's needles of grand fir (Abies grandis (Dougl.) Lindl.). The rust has been induced repeatedly to fruit on both alternate hosts, licorice fern (Polypodium vulgare L. var. occidentale Hook.) and grand fir, by inoculation, and its pycnial and aecial states are described for the first time. The life history of Milesia laeviuscula is presented. It is noteworthy because of the long period (4 to 5 months) required for maturation of the aecia, because primary infection of the fern takes place largely during late fall and early winter, and because the rust can survive on its fern host independent of its alternate host, grand fir.

HOWARDULA APTINI (SHARGA 1932) PARASITIC IN BLUEBERRY THRIPS IN NEW BRUNSWICK

1964 ◽  
Vol 42 (5) ◽  
pp. 843-846 ◽  
Author(s):  
W. R. Nickle ◽  
G. W. Wood
Keyword(s):  
Life History ◽  
North America ◽  
New Brunswick ◽  
Parasitic Nematode ◽  
Sample Introduction ◽  
History Of ◽  
First Time

A parasitic nematode, Howardula aptini (Sharga 1932) Wachek, 1955, is reported for the first time in North America, and is a parasite of two serious blueberry thrips. Parasitized thrips probably do not produce eggs as the ovarial tissue is greatly reduced by the nematode and dissections failed to reveal eggs in infected individuals. Parasitism varied and was 71% in one sample. Introduction of the nematode into unparasitized populations is feasible. Previously unknown details of the morphology and life history of the nematode are described and illustrated.

NOTES ON THE OCCURRENCE OF THE WHARF BORER, NACERDES MELANURA (COLEOPTERA: OEDEMERIDAE), IN NEWFOUNDLAND

1980 ◽  
Vol 112 (2) ◽  
pp. 217-218 ◽  
Author(s):  
Ray F. Morris
Keyword(s):  
United States ◽  
South Africa ◽  
British Columbia ◽  
Life History ◽  
New Mexico ◽  
New Zealand ◽  
New Brunswick ◽  
The United States ◽  
The World ◽  
History Of

The wharf borer, Nacerdes melanura (L.) (Fig. I), is widely distributed throughout the world. It has been recorded in England, New Zealand, Denmark, Germany. Siberia, Japan, and the Bahama Islands (Balch 1937). Walker (1936) reported N. melanura from Syria, Shanghai, Korea, Japan, South Africa, Brazil, Argentina, Costa Rica, and the United States. In the United States, it has been found in most coastal states, and also in Michigan, Indiana, Missouri, Kansas, and New Mexico. In Canada, it is known to occur in Newfoundland, Nova Scotia, New Brunswick, Quebec, Ontario, Manitoba, and British Columbia. The life history of the wharf borer in Canada has been outlined in detail by Balch (1937) and Spencer (1957).

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