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The response of the development and ...

Bouma, Robert Warner.

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The response of the development and reproduction of the Pecos pupfish (Cyprinodon pecosensis) to natural differences among habitats at Bitter Lake National Wildlife Refuge, New Mexico.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The response of the development and reproduction of the Pecos pupfish (Cyprinodon pecosensis) to natural differences among habitats at Bitter Lake National Wildlife Refuge, New Mexico./
作者:	Bouma, Robert Warner.
面頁冊數:	385 p.
附註:	Source: Dissertation Abstracts International, Volume: 50-07, Section: B, page: 2741.
Contained By:	Dissertation Abstracts International50-07B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8924603

The response of the development and reproduction of the Pecos pupfish (Cyprinodon pecosensis) to natural differences among habitats at Bitter Lake National Wildlife Refuge, New Mexico.
Bouma, Robert Warner.

The response of the development and reproduction of the Pecos pupfish (Cyprinodon pecosensis) to natural differences among habitats at Bitter Lake National Wildlife Refuge, New Mexico. - 385 p.

Source: Dissertation Abstracts International, Volume: 50-07, Section: B, page: 2741.

Thesis (Ph.D.)--Cornell University, 1989.

At Bitter Lake National Wildlife Refuge (BLNWR) in 1977 through 1983 Cyprinodon pecosensis, the Pecos pupfish, occurred primarily in three types of habitat: springs, management units, and sinkhole lakes. The sinkhole lakes contained the largest pupfish populations. The extremely variable water temperatures, dissolved oxygen concentrations, pH values, alkalinities, water colors, and patterns of chemical stratification and monomixis in each sinkhole lake were largely a function of salinity and sinkhole morphometry, which in turn were related to lake age.Subjects--Topical Terms:

1017726
Biology, Ecology.

The response of the development and reproduction of the Pecos pupfish (Cyprinodon pecosensis) to natural differences among habitats at Bitter Lake National Wildlife Refuge, New Mexico.
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245 1 4 $a The response of the development and reproduction of the Pecos pupfish (Cyprinodon pecosensis) to natural differences among habitats at Bitter Lake National Wildlife Refuge, New Mexico.
300 $a 385 p.
500 $a Source: Dissertation Abstracts International, Volume: 50-07, Section: B, page: 2741.
502 $a Thesis (Ph.D.)--Cornell University, 1989.
520 $a At Bitter Lake National Wildlife Refuge (BLNWR) in 1977 through 1983 Cyprinodon pecosensis, the Pecos pupfish, occurred primarily in three types of habitat: springs, management units, and sinkhole lakes. The sinkhole lakes contained the largest pupfish populations. The extremely variable water temperatures, dissolved oxygen concentrations, pH values, alkalinities, water colors, and patterns of chemical stratification and monomixis in each sinkhole lake were largely a function of salinity and sinkhole morphometry, which in turn were related to lake age.
520 $a Of the thirteen fish species at BLNWR, the five cyprinodonts were the most common and widespread. The distribution of each cyprinodont was unique, and the abundances of each were all negatively correlated. The distribution and abundance of the cyprinodonts was partly a function of differential tolerances for physical factors. Predation and competition among the cyprinodonts appeared to be less important.
520 $a Growth rate in C. pecosensis decreased with salinity while rates of development increased with temperature. Consequently, the smallest pupfish were found at high temperatures in all salinities, while the largest were found in sites of low temperature and low salinity.
520 $a Warm winter conditions promoted early, intense reproduction in the spring. During the reproductive season, spawning occurred each day whenever temperatures were near 28 $\ sp\circ $\ sp\circ
520 $a When reproductively active, male C. pecosensis at BLNWR almost always exhibited territoriality. Consort pairing and satellite males were important in one site with a sparse population of small pupfish. Spawning rates per male were greatest for intermediate-sized males on intermediate-sized territories 2 to 3 meters from shore over Chara and Ruppia. Of territorial male behaviors, only fighting with and displaying to other males related significantly to reproductive success.
520 $a Female pupfish produced on average 4.3 eggs per day, with higher rates associated with larger body sizes. Early maturation, seasonally early reproduction, and temporally concentrated reproduction were positively associated. Also, within the constraint of body size variation, egg size and number were inversely related. These patterns were regulated primarily by temperature and salinity. Pupfish life histories did not relate to mortality schedules or population density regimes.
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