Opportunity Information: Apply for R15SS00014

  • The Bureau of Reclamation in the natural resources sector is offering a public funding opportunity titled "Razorback and Flannelmouth Sucker Hybirdization" and is now available to receive applicants.
  • Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 15.517 Fish and Wildlife Coordination Act.
  • This funding opportunity was created on Jul 6, 2015 and posted on Jul 6, 2015.
  • Applicants must submit their applications by Jul 21, 2015. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
  • The funding agency has allocated a total of $204,523.00 to eligible and selected applicants.
  • Each selected applicant is eligible to receive up to $204,523.00 in funding.
  • The number of recipients for this funding is limited to 1 candidate(s).
  • Eligible applicants include: State governments.
Apply for R15SS00014

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Opportunity Summary:

The grant opportunity titled "Razorback and Flannelmouth Sucker Hybirdization" (Funding Opportunity Number R15SS00014) is a Bureau of Reclamation discretionary grant focused on natural resources work in the Colorado River Basin. It targets two closely linked problems affecting the endangered razorback sucker: (1) increasing hybridization with flannelmouth sucker due to compressed and overlapping spawning ranges, and (2) low survival of juvenile razorback suckers, potentially worsened by competition with invasive common carp. The overall intent is to generate practical, decision-ready biological information that can be used in recovery planning, field monitoring, and management actions.

A major emphasis of the project is understanding hybridization between razorback suckers and flannelmouth suckers. Because both species have had their historical ranges greatly reduced, they are now restricted to relatively small stretches of the Colorado River. This confinement has created more overlap in where and when adults spawn, which in turn has increased opportunities for interbreeding. The opportunity frames hybridization as a direct conservation concern because it can change population genetics and complicate how biologists define and track the endangered species. It also explicitly notes that hybridization can have serious implications for species definitions, listing status under conservation law, and long-term recovery strategies for razorback suckers.

To address these concerns, the proposed work would examine how hybrids perform at early life stages and whether they are likely to persist and spread within the system. Specifically, the grant calls for research on egg viability and juvenile survival of hybrid individuals, along with assessment of swimming ability. These measurements are important because they help determine whether hybrids are less fit than pure razorback suckers (potentially limiting the impact), similarly fit (meaning hybrids could become common), or more fit in certain contexts (which could accelerate genetic swamping). By focusing on eggs and juveniles, the project aims to clarify impacts at the life stages most likely to drive future population composition.

Another key deliverable is the development of reliable tools to differentiate hybrids from pure individuals in the field, particularly at young ages. Juvenile fish can be difficult to identify based on appearance alone, and misidentification can undermine monitoring data, population estimates, and the evaluation of restoration actions. The opportunity signals a need for practical field identification methods for young flannelmouth/razorback hybrids, suggesting outcomes that would improve day-to-day management, not just academic understanding.

In parallel, the grant addresses low juvenile survival as an additional threat to razorback sucker recovery. Juvenile razorback suckers are commonly found in shallow backwater habitats of the Colorado River, and these areas are described as being dominated by common carp. Because razorback suckers and carp occupy similar trophic positions and often share the same habitats, the opportunity highlights competition as a plausible mechanism reducing razorback sucker growth and survival. The proposed approach is laboratory-based, using replicated artificial stream systems to test how competition with carp affects juvenile razorback suckers. This kind of controlled setup is meant to isolate competitive effects on growth and survival, producing clearer evidence than field observations alone, where multiple stressors occur at once.

From an administrative standpoint, this was a single-award grant with an estimated total funding amount of $204,523 (also listed as the award ceiling), with no cost sharing or matching requirement. Eligible applicants were state governments. The opportunity was posted July 6, 2015, and closed July 21, 2015, with an archive date of August 20, 2015. The CFDA program number referenced is 15.517 under the Fish and Wildlife Coordination Act. For official assistance with the announcement, the listed contact was Deborah Chorlton, Grants Management Specialist, at 801-524-3734.

In practical terms, the opportunity is centered on producing management-relevant science: determining whether hybrid offspring can survive and function well enough to influence populations, enabling field crews to identify hybrids accurately, and testing whether carp competition is suppressing juvenile razorback sucker performance. Together, these outputs are intended to reduce uncertainty in recovery decisions and improve the effectiveness of conservation actions aimed at sustaining and rebuilding endangered razorback sucker populations in the Colorado River system.

Frequently Asked Questions (FAQs): Razorback and Flannelmouth Sucker Hybirdization (R15SS00014)

What is the name and funding opportunity number for this grant?

The opportunity is titled "Razorback and Flannelmouth Sucker Hybirdization" and the Funding Opportunity Number is R15SS00014.

Which agency is offering this grant?

This is a Bureau of Reclamation discretionary grant.

What geographic area does the project focus on?

The work is focused on natural resources issues in the Colorado River Basin, particularly within stretches of the Colorado River where razorback suckers and flannelmouth suckers currently overlap.

What conservation species is at the center of this opportunity?

The primary focus is the endangered razorback sucker, especially threats that affect its recovery in the Colorado River system.

What are the two main problems this grant is trying to address?

The opportunity targets two closely linked issues: (1) increasing hybridization between razorback suckers and flannelmouth suckers due to compressed and overlapping spawning ranges, and (2) low survival of juvenile razorback suckers, potentially worsened by competition with invasive common carp.

Why is hybridization between razorback suckers and flannelmouth suckers considered a concern?

Hybridization is framed as a direct conservation concern because it can alter population genetics and complicate how biologists define and track the endangered razorback sucker. The opportunity also notes that hybridization can have serious implications for species definitions, listing status under conservation law, and long-term recovery strategies.

What is driving the increase in hybridization according to the opportunity?

Both species have had their historical ranges greatly reduced and are now confined to relatively small stretches of the Colorado River. That confinement increases overlap in where and when adults spawn, creating more opportunities for interbreeding.

What kinds of research on hybrids does the grant call for?

The opportunity calls for examining how hybrids perform at early life stages and whether they are likely to persist and spread within the system. Specifically mentioned areas include egg viability, juvenile survival, and assessment of swimming ability.

Why does the opportunity emphasize egg viability, juvenile survival, and swimming ability?

These measures help determine whether hybrid individuals are less fit than pure razorback suckers, similarly fit, or potentially more fit in certain contexts. The results inform how likely hybrids are to persist and influence future population composition, especially at early life stages that can drive long-term changes.

What kinds of practical outputs are expected related to identifying hybrids?

A key deliverable is the development of reliable tools to differentiate hybrids from pure individuals in the field, particularly at young ages, when visual identification can be difficult.

Why is field identification of juvenile hybrids important?

Misidentification can undermine monitoring data, population estimates, and evaluation of restoration or recovery actions. Practical identification methods are intended to improve day-to-day management and field monitoring, not just scientific understanding.

What additional threat to razorback sucker recovery is addressed besides hybridization?

The opportunity addresses low juvenile survival of razorback suckers as an additional threat, with competition from invasive common carp highlighted as a plausible contributing mechanism.

Where are juvenile razorback suckers commonly found, according to the opportunity?

They are commonly found in shallow backwater habitats of the Colorado River.

How are common carp described in relation to these juvenile habitats?

The shallow backwater habitats where juvenile razorback suckers are found are described as being dominated by common carp.

Why does the opportunity suspect competition with carp could reduce juvenile razorback sucker survival?

The opportunity notes that razorback suckers and common carp occupy similar trophic positions and often share the same habitats, making competition a plausible mechanism reducing growth and survival.

What approach does the opportunity describe for testing carp competition effects?

The proposed approach is laboratory-based, using replicated artificial stream systems to test how competition with carp affects juvenile razorback sucker growth and survival.

Why use replicated artificial stream systems instead of only field observations?

The controlled laboratory setup is intended to isolate competitive effects on growth and survival and provide clearer evidence than field observations alone, where multiple stressors can occur at the same time.

What is the overall intent of the project, in plain terms?

The overall intent is to generate practical, decision-ready biological information that can be used in recovery planning, field monitoring, and management actions for razorback sucker conservation in the Colorado River system.

How much funding was available under this opportunity?

The estimated total funding amount was $204,523, which was also listed as the award ceiling.

Was this opportunity designed to make multiple awards?

No. It was described as a single-award grant.

Was cost sharing or matching required?

No cost sharing or matching requirement was stated for this opportunity.

Who was eligible to apply?

Eligible applicants were state governments.

When was the opportunity posted and when did it close?

It was posted on July 6, 2015 and closed on July 21, 2015.

When was the opportunity archived?

The archive date listed was August 20, 2015.

What CFDA program number is referenced for this opportunity?

The referenced CFDA program number is 15.517 under the Fish and Wildlife Coordination Act.

Who was the listed contact for official assistance?

The listed contact was Deborah Chorlton, Grants Management Specialist, at 801-524-3734.

What types of decisions or management actions could this project support?

Based on the opportunity description, the outputs are meant to reduce uncertainty in recovery decisions by clarifying whether hybrids can survive and perform well enough to influence populations, improving field identification of hybrids for monitoring, and testing whether carp competition is suppressing juvenile razorback sucker growth and survival.

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